US2604394A - Magnesium base alloys - Google Patents
Magnesium base alloys Download PDFInfo
- Publication number
- US2604394A US2604394A US120422A US12042249A US2604394A US 2604394 A US2604394 A US 2604394A US 120422 A US120422 A US 120422A US 12042249 A US12042249 A US 12042249A US 2604394 A US2604394 A US 2604394A
- Authority
- US
- United States
- Prior art keywords
- rare earth
- chloride
- magnesium
- fluoride
- per cent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 20
- 229910052749 magnesium Inorganic materials 0.000 title claims description 20
- 239000011777 magnesium Substances 0.000 title claims description 20
- 229910045601 alloy Inorganic materials 0.000 title claims description 18
- 239000000956 alloy Substances 0.000 title claims description 18
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 36
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 25
- 150000002910 rare earth metals Chemical class 0.000 claims description 20
- 235000003270 potassium fluoride Nutrition 0.000 claims description 16
- 239000011698 potassium fluoride Substances 0.000 claims description 16
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims description 12
- 239000002585 base Substances 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 4
- 229940091250 magnesium supplement Drugs 0.000 description 18
- 238000005275 alloying Methods 0.000 description 17
- -1 rare earth metal fluorides Chemical class 0.000 description 16
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 14
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000001103 potassium chloride Substances 0.000 description 7
- 235000011164 potassium chloride Nutrition 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 6
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 6
- 229910052726 zirconium Inorganic materials 0.000 description 6
- 235000011147 magnesium chloride Nutrition 0.000 description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 description 5
- 229960002337 magnesium chloride Drugs 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000002222 fluorine compounds Chemical class 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 229960002668 sodium chloride Drugs 0.000 description 3
- 235000013024 sodium fluoride Nutrition 0.000 description 3
- 239000011775 sodium fluoride Substances 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 229960002713 calcium chloride Drugs 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001631 strontium chloride Inorganic materials 0.000 description 2
- 229940013553 strontium chloride Drugs 0.000 description 2
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 2
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical group [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Chemical group 0.000 description 1
- 229940045511 barium chloride Drugs 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Inorganic materials [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Definitions
- an alloying composition' for introducing rare earth metals into magnesium consists of the fluoride of the rare earth metaLsufiicient potassium fluoride to dissolve the rare earth metal fluoride at the alloyingtemperature (e. g. 700 C. to 850 C.) and at least asufficient quantity of an alkali metal chloride to prevent violent reaction, other of the aforementioned chlorides, if any, not exceeding 5 per cent.
- the alloyingtemperature e. g. 700 C. to 850 C.
- magnesium chloride should be absent.
- the quantity of potassium fluoride is preferably at least an equimolecular proportion in relation to the rare earth metal fluoride.
- the proportion of alkali metal chloride should be at least one chemical equivalent of the potassium fluoride.
- the quantity of alkali metal chloride is preferably from 5 to per cent of the total weight of I flux more than the quantity of potassium fluoride and from to per cent less than the quantity of rare earth metal fluoride.
- the alkali metal chloride and potassium fluoride together are preferably from 5 to 15 per cent less than the quantity of rare earth metal fluoride.
- the ingredients of the-composition should fall 7 within the following limits:
- composition viz:
- One or more rare earth metal chlorides or oxides preferably not exceeding 10 per cent each andnot exceeding 15 per cent in total. These should however preferably not exceed 4 per cent.
- lithium chloride and/or bromide e. g. up to 10 per cent (preferably less than 5%)
- the total proportion in the alloying composition of rare earth metal fluorides, potassium fluoride and alkali metal chlorides, should be at least,80 :per cent and preferably at least 95 per cent;
- magnesium base alloys containing for example about 3 per cent. rare earth metals the following procedure may be adopted.
- the magnesium or magnesium alloy to be melted is charged to the'crucible and a quantity of the composition equal to about 12 percent of the weight of metal also added.
- the temperature of the metal is raisedto about 830 C., and the metalis'puddled for 10 to 15 minutes using an alloying tool consisting of a perforated plate with a handle attached at right angles.
- a flux which does not contain magnesium chloride e. g. the flux described in the specification of British Patent No. 652,235.
- the composition may be contacted with the magnesium or magnesium alloy in other ways, e. g., the composition may be added in the form of lumps or powder to the melt when the metal is molten, or the metal may be poured on to the composition, the latter being either in the solid or molten state.
- Mechanical stirring' may be substituted for puddling by hand.
- the addition of i the zirconium can be'made before or after the introduction of the rare earth metal or may be simultaneous therewith.
- the alloying composition of U. S. Patent 2,452,914 may conveniently be used, and this can be chargedto the crucible with the metal to be melted or may be contacted with the molten alloyv in other ways, e. g., by stirring the alloying composition either in the form of lump or powder into the molten metal, or the metal may be poured on to the composition, the latter being in either the solid or liquid state. Mechanical stirring may be used.
- the alloying composition In remelting ingot or scrap alloy containing rare earth metals it is desirable to introduce a further quantity of the alloying composition into the crucible and conveniently this'isadded to the crucible before or at the same time as the scrap. It can however be added at a later stage.
- the Weight of alloying composition required in remelting alloy containing 3 per cent of rare earth metals will for example be from one to two per cent of that of the alloy, and its use will enable the rare earth metal content of the final alloy to be closely controlled.
- the zirconiurn alloying substance may be introduced into the molten magnesium at the same time as or after introducing the rare earth metal alloying composition.
- a composition of the character described, for use in producing magnesium base alloys consisting of 45 to of at least one rare earth metal fluoride, 12 to 25% of potassium fluoride and 20 to 40% of at least one alkali metal chloride.
- a composition for use in producing magnesium base alloys consisting of from 80 to 98% of a main component and from. 20 to 2% of a subsidiary component, the main component consisting of: rare earth metal fluorides 45 to 65% by weight of the component, potassium fluoride 12 to 25% by weight of the component and alkali metal chloride 20 to 40% by weight of the com- .ponent, the subsidiary component consisting of at least one of the following: 0 to 5% of sodium chloride, 0 to 5% of an alkaline earth metal chloride, 0 to 10% of a chloride of a rare earth metal, 0 to 10% of an oxide of a rare earth metal, 0 to 5% of an oxide inert to magnesiumyO to 5% of anoxide inert to rare earth metals, 0 to 5% of a 'fluoride of an alkaline earth metal, 0 to 10% of a bromide of an alkali metal, 0 to 10% ofa' bromide of an alkaline earth metal, EDWARD F.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Patented July 22, 1952 chester, England, assignor to Magnesium Elektron Limited, Manchester, England, a British omp any No Drawing. Application October 8, 1949, Serial N 0. 120,422. In Great Britain July 4, 1949 1 J .This invention relates to the production of magnesium-base alloys, and in particular to the introduction of one or more of the'rare earth metals into the alloy in quantities not exceeding 15 per cent and usually from 1 to 8 per cent.v For thispurpose, it is possible to obtainrare earth metals in metallic form which, however, are
usually contaminated with appreciable quantities of iron and silicon. These impurities are, however, deleterious when introduced into magnesium alloys, especially magnesiumalloys containing zirconium. It is found that even comparatively smallproportions of iron and silicon will militate to a considerable extent against the introduction of zirconium into the magnesium. I have, therefore, considered the possibility of introducing rare earth metals by means of reducible salts of these metals.
It has. been suggested in British Patent No. 342,586 to incorporate cerium chloride in-fluxes to be used with alloys containing rare earth metals, these fluxes containing magnesium chloride, and the object of the cerium chloride being to give rise to sufiicient cerium on reaction with the magnesium to offset the cerium loss which would otherwise be caused by reaction with the magnesium chloride. I have performed a number of alloying experiments with cerium chloride but this substance is deliquescent, volatile, readily hydrolysed and expensive, and is, therefore, not well adapted to serve as a commercial source for the introduction of cerium. Moreover, reduction of the cerium chloride by magnesium is far from complete. These remarks are also applicable to the chlorides of other rare earth metals.
I have, therefore, carried out experiments with a view to using the fluorides of the rare earth metals for alloying purposes. These fluorides are however highmelting pointsolids, and it therefore appeared to me desirable to search for some suitable solvent to assist in the reduction at temperatures suitable for treatment of magnesium. Experiments showed thatthe rare earth metal fluorides were insoluble in alkali metal chlorides and also in alkaline earth metal chlorides with which they did not react. I
therefore tried various low melting mixtures of It was found that various fluoride mix- 2 Claims. (01. 75-67) Considering the possible use of potassium fluoride, I discovered that potassium fluoride formed a low melting point mixture with rare earth fluorides if the proportions of the substances were kept within certain limits, and if sufiicient potassium chloride was added to prevent the mixture from reacting violently with magnesium, the resulting composition could be used for introducing rare, earth metals into magnesium. Itwas also found that the rare earth metal alloying efliciencies using such compositions were superior to those that obtained with rare earth chlorides.
I have considered the possibility of using sodium fluoride in place of potassium fluoride, and of using sodium chloride, calciumchloride, strontium chloride or magnesiumchloride in place of potassium chloride with a view to effecting further improvements in alloying efliciency. The use of'sodium fluoride results however in the incorporation into the final alloy of undesirably large amounts of sodium, which in all cases produces a marked increasein the tendency of the alloys to burn during casting, and inthe case of alloys containing zirconium exercises a deleterious effect on tensile properties, particularly in the sand cast state. The alloying composition should not contain more than 5 per cent sodium fluoride if any. Substitution of sodium chloride for the potassium chloride also gives rise to somewhat increased sodium contents in the final alloys. On substituting calcium chloride, strontium chloride and barium chloride for the potassium chloride, it is found that a reaction occurs in which the potassium fluoride is converted to potassium chloride 'With subsequent precipitation from solution of the rare earth fluoride, and deterioration in the alloying efliciency. It appears therefore that the most satisfactory chloride to use in order to prevent the mixture of rare earth fluoride and potassium fluoride from reacting violently with the magnesium during alloying is'potassium chloride.
According to the present invention therefore, an alloying composition' for introducing rare earth metals into magnesium consists of the fluoride of the rare earth metaLsufiicient potassium fluoride to dissolve the rare earth metal fluoride at the alloyingtemperature (e. g. 700 C. to 850 C.) and at least asufficient quantity of an alkali metal chloride to prevent violent reaction, other of the aforementioned chlorides, if any, not exceeding 5 per cent. In particular, magnesium chloride should be absent. a I
Whilst the minimum quantity of potassium fluoride is that required to dissolve the rare earth metal fluoride, a somewhatgreater proportion may be used in order to produce greater fluidityat the alloying temperature, and a corresponding 3 increase in the proportion of the alkali metal chloride is then used. The quantity of potassium fluoride is preferably at least an equimolecular proportion in relation to the rare earth metal fluoride. The proportion of alkali metal chloride should be at least one chemical equivalent of the potassium fluoride. 1
The quantity of alkali metal chloride is preferably from 5 to per cent of the total weight of I flux more than the quantity of potassium fluoride and from to per cent less than the quantity of rare earth metal fluoride. The alkali metal chloride and potassium fluoride together are preferably from 5 to 15 per cent less than the quantity of rare earth metal fluoride.
. The ingredients of the-composition should fall 7 within the following limits:
For example, a mixture consisting of 55% rare earth metal fluoride, 17% potassium fluoride and 28% alkali metal chloride gives satisfactory results. 1 In practice, I prefer to use potassium chloride as the alkali metal chloride.
Certain ingredients otherthan those hereinbefore mentioned may be incorporated into the composition viz:
1. One or more rare earth metal chlorides or oxides preferably not exceeding 10 per cent each andnot exceeding 15 per cent in total. These should however preferably not exceed 4 per cent.
2. Up to 5 per cent of one or more oxides inert to magnesium and'which do'not react with rare earth metal chlorides e. g. MgO (preferably not more than 2 per cent).
3. Up to 5 per cent of one or more fluorides of alkaline earth metals including magnesium. The total of these fluorides and the oxides mentioned under 2 should not exceed 5 per cent (preferably however not exceeding 2 per cent).
4. Up to 10 per cent (preferably not more than 5 per cent) of bromides of alkali metal and alkaline earth metals.
5; Some lithium chloride and/or bromide, e. g. up to 10 per cent (preferably less than 5%) The total proportion in the alloying composition of rare earth metal fluorides, potassium fluoride and alkali metal chlorides, should be at least,80 :per cent and preferably at least 95 per cent;
In the production of magnesium base alloys containing for example about 3 per cent. rare earth metals, the following procedure may be adopted. The magnesium or magnesium alloy to be melted is charged to the'crucible and a quantity of the composition equal to about 12 percent of the weight of metal also added. When melting is complete, the temperature of the metal is raisedto about 830 C., and the metalis'puddled for 10 to 15 minutes using an alloying tool consisting of a perforated plate with a handle attached at right angles. During the puddling process, it is desirable to use a flux which does not contain magnesium chloride, e. g. the flux described in the specification of British Patent No. 652,235.
In addition to the method described, the composition may be contacted with the magnesium or magnesium alloy in other ways, e. g., the composition may be added in the form of lumps or powder to the melt when the metal is molten, or the metal may be poured on to the composition, the latter being either in the solid or molten state. Mechanical stirring'may be substituted for puddling by hand.
When preparing alloys containing both ziricomum and rare earth metals, the addition of i the zirconium can be'made before or after the introduction of the rare earth metal or may be simultaneous therewith. For introduction of the zirconium, the alloying composition of U. S. Patent 2,452,914 may conveniently be used, and this can be chargedto the crucible with the metal to be melted or may be contacted with the molten alloyv in other ways, e. g., by stirring the alloying composition either in the form of lump or powder into the molten metal, or the metal may be poured on to the composition, the latter being in either the solid or liquid state. Mechanical stirring may be used. j
In remelting ingot or scrap alloy containing rare earth metals it is desirable to introduce a further quantity of the alloying composition into the crucible and conveniently this'isadded to the crucible before or at the same time as the scrap. It can however be added at a later stage. The Weight of alloying composition required in remelting alloy containing 3 per cent of rare earth metals will for example be from one to two per cent of that of the alloy, and its use will enable the rare earth metal content of the final alloy to be closely controlled.
In the production'of magnesium base alloys containing zirconium as well as rare earth metals, the zirconiurn alloying substance may be introduced into the molten magnesium at the same time as or after introducing the rare earth metal alloying composition.
I claim.
1. A composition of the character described, for use in producing magnesium base alloys, consisting of 45 to of at least one rare earth metal fluoride, 12 to 25% of potassium fluoride and 20 to 40% of at least one alkali metal chloride.
'2. A composition for use in producing magnesium base alloys consisting of from 80 to 98% of a main component and from. 20 to 2% of a subsidiary component, the main component consisting of: rare earth metal fluorides 45 to 65% by weight of the component, potassium fluoride 12 to 25% by weight of the component and alkali metal chloride 20 to 40% by weight of the com- .ponent, the subsidiary component consisting of at least one of the following: 0 to 5% of sodium chloride, 0 to 5% of an alkaline earth metal chloride, 0 to 10% of a chloride of a rare earth metal, 0 to 10% of an oxide of a rare earth metal, 0 to 5% of an oxide inert to magnesiumyO to 5% of anoxide inert to rare earth metals, 0 to 5% of a 'fluoride of an alkaline earth metal, 0 to 10% of a bromide of an alkali metal, 0 to 10% ofa' bromide of an alkaline earth metal, EDWARD F. EMLEY.
REFERENCES orrnn The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name 1 Date 2,250,687 Von Zeppelin July 29, 1941 2,251,088 Von Zeppelin July 29, 1941' 2,452,914 Emley i Nov. 2, 1948
Claims (1)
1. A COMPOSITION OF THE CHARACTER DESCRIBED FOR USE IN PRODUCING MAGNESIUM BASE ALLOYS, CONSISTING OF: 45 TO 65% OF AT LEAST ONE RARE EARTH METAL FLUORIDE, 12 TO 25% OF POTASSIUM FLUORIDE AND 20 TO 40% OF AT LEAST ONE ALKALI METAL CHLORIDE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2604394X | 1949-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2604394A true US2604394A (en) | 1952-07-22 |
Family
ID=10911390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US120422A Expired - Lifetime US2604394A (en) | 1949-07-04 | 1949-10-08 | Magnesium base alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2604394A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678267A (en) * | 1952-02-27 | 1954-05-11 | Dow Chemical Co | Method of making an alloy comprising magnesium and thorium |
| US2745741A (en) * | 1952-10-07 | 1956-05-15 | Magnesium Elektron Ltd | Method of producing magnesium base alloys |
| US2771359A (en) * | 1955-03-24 | 1956-11-20 | Beryllium Corp | Rare earth master alloys |
| US2778723A (en) * | 1953-01-30 | 1957-01-22 | Toshio Yoshida | Method for eliminating the explosive reaction in a thermit process |
| US2809887A (en) * | 1954-10-18 | 1957-10-15 | Oliver J C Runnalls | Method of alloying reactive metals with aluminum or beryllium |
| US2882593A (en) * | 1957-06-10 | 1959-04-21 | Curtiss Wright Corp | Brazing flux |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2250687A (en) * | 1938-03-02 | 1941-07-29 | Walther H Duisberg | Manufacture of alloys |
| US2251088A (en) * | 1937-08-26 | 1941-07-29 | Walther H Duisberg | Process for the production of alloys containing beryllium |
| US2452914A (en) * | 1945-08-14 | 1948-11-02 | Magnesium Elektron Ltd | Process and composition for producing magnesium-zirconium alloys |
-
1949
- 1949-10-08 US US120422A patent/US2604394A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2251088A (en) * | 1937-08-26 | 1941-07-29 | Walther H Duisberg | Process for the production of alloys containing beryllium |
| US2250687A (en) * | 1938-03-02 | 1941-07-29 | Walther H Duisberg | Manufacture of alloys |
| US2452914A (en) * | 1945-08-14 | 1948-11-02 | Magnesium Elektron Ltd | Process and composition for producing magnesium-zirconium alloys |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678267A (en) * | 1952-02-27 | 1954-05-11 | Dow Chemical Co | Method of making an alloy comprising magnesium and thorium |
| US2745741A (en) * | 1952-10-07 | 1956-05-15 | Magnesium Elektron Ltd | Method of producing magnesium base alloys |
| US2778723A (en) * | 1953-01-30 | 1957-01-22 | Toshio Yoshida | Method for eliminating the explosive reaction in a thermit process |
| US2809887A (en) * | 1954-10-18 | 1957-10-15 | Oliver J C Runnalls | Method of alloying reactive metals with aluminum or beryllium |
| US2771359A (en) * | 1955-03-24 | 1956-11-20 | Beryllium Corp | Rare earth master alloys |
| US2882593A (en) * | 1957-06-10 | 1959-04-21 | Curtiss Wright Corp | Brazing flux |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2848321A (en) | Drossing fluxes | |
| US2789896A (en) | Process for reducing metal oxides | |
| US2750284A (en) | Process for producing nodular graphite iron | |
| US2604394A (en) | Magnesium base alloys | |
| JP2571561B2 (en) | Processing method for refining metals and alloys | |
| US2154613A (en) | Method for producing alloys | |
| US2578098A (en) | Aluminum base alloy | |
| US3748121A (en) | Treatment of molten ferrous metals | |
| US2497530A (en) | Master alloy for introducing zirconium into magnesium | |
| CA1175661A (en) | Process for aluminothermic production of chromium and chromium alloys low in nitrogen | |
| US2678267A (en) | Method of making an alloy comprising magnesium and thorium | |
| US2049291A (en) | Method of making copper-titanium alloys | |
| US2452894A (en) | Process for producing magnesiumzirconium alloys | |
| US3355281A (en) | Method for modifying the physical properties of aluminum casting alloys | |
| US1981798A (en) | Composition of matter for treating aluminum alloys | |
| US3801311A (en) | Method of introducing rare earth metals into addition alloys | |
| US2686946A (en) | Refining beryllium in the presence of a flux | |
| US2452914A (en) | Process and composition for producing magnesium-zirconium alloys | |
| US2955935A (en) | Manufacture of aluminum titanium alloys | |
| US3951764A (en) | Aluminum-manganese alloy | |
| US2472025A (en) | Method of treatment of magnesiumbase alloys | |
| US2932564A (en) | Mica treated metals | |
| US1500954A (en) | Manufacture of lead alloys | |
| US2497529A (en) | Process for production of magnesium base alloys containing zirconium | |
| US3440040A (en) | Process of making rare earth metals and silicon alloys |