US2815281A - Pyrophoric alloys - Google Patents
Pyrophoric alloys Download PDFInfo
- Publication number
- US2815281A US2815281A US410028A US41002854A US2815281A US 2815281 A US2815281 A US 2815281A US 410028 A US410028 A US 410028A US 41002854 A US41002854 A US 41002854A US 2815281 A US2815281 A US 2815281A
- Authority
- US
- United States
- Prior art keywords
- alloys
- pyrophoric
- titanium
- lead
- grams
- 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
- 229910045601 alloy Inorganic materials 0.000 title description 8
- 239000000956 alloy Substances 0.000 title description 8
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910000978 Pb alloy Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- VJPLIHZPOJDHLB-UHFFFAOYSA-N lead titanium Chemical compound [Ti].[Pb] VJPLIHZPOJDHLB-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C15/00—Pyrophoric compositions; Flints
Definitions
- Titanium-lead alloys which are suitable for use in lighters and other applications. These alloys, which form the subject of the present invention, are alloys of titanium with tin or lead or with both, antimony being present up to a maximum of 25%, if desired. Titanium-lead alloys containing substantially more than 52% Pb are inhomogenous; they show segregation. Titanium-lead alloys containing less than 40% lead are too hard for industrial purposes. The lead may be replaced in part or entirely by tin, but those alloys are inferior in ignition quality to titanium-lead alloys.
- the alloys may be produced in any desired way.
- the following example illustrates such procedure of production: 540 grams titanium powder containing 99% titanium are mixed with 240 grams lead powder (99.9% pure) and 700 grams coarse antimony powder and without addition of a binder are pressed in a hydraulic press to form buttons 30 mm. in diameter and 30 mm. high.
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
United States Patent M PYROPHORIC ALLOYS Otto Smetana, Hans Nowotny, and Kurt Komarek, Vienna, Austria No Drawing. Application February 12, 1954, Serial No. 410,028
Claims priority, application Austria February 26, 1953 1 Claim. (Cl. 75-134) There are metals and alloys which exhibit pyrophoric eifects in response to impact and friction, giving sparks when being struck, rubbed, filed and the like. In technically useful alloys these mechanically separated sparks must be hot enough and their combustion temperature must prevail long enough to ignite suitable substances such as combustible gases and liquid or solid fuels. The pyrophoric effect must be producible readily and at any time, whereas the consumption of pyrophoric metal for the formation of sparks should be small. The pyrophoric metal must resist for sufiiciently long periods the corrosive influences to which it is subjected in normal use.
We have now found new, highly pyrophoric alloys, which are suitable for use in lighters and other applications. These alloys, which form the subject of the present invention, are alloys of titanium with tin or lead or with both, antimony being present up to a maximum of 25%, if desired. Titanium-lead alloys containing substantially more than 52% Pb are inhomogenous; they show segregation. Titanium-lead alloys containing less than 40% lead are too hard for industrial purposes. The lead may be replaced in part or entirely by tin, but those alloys are inferior in ignition quality to titanium-lead alloys.
The alloys may be produced in any desired way. The following example illustrates such procedure of production: 540 grams titanium powder containing 99% titanium are mixed with 240 grams lead powder (99.9% pure) and 700 grams coarse antimony powder and without addition of a binder are pressed in a hydraulic press to form buttons 30 mm. in diameter and 30 mm. high.
2,815,281 Patented Dec. 3, 1957 500 grams of said buttons in a cylindrical crucible of dense graphite having the dimensions: 48 mm. internal diameter, mm. external diameter, length 300 mm., are inserted into a tiltable, entirely closed carbon-tube short-circuit furnace. The furnace space is evacuated down to 0.05 mm. Hg, pure argon is admitted to a pressure of 700 mm. Hg, and the electric power is connected. The current is initially 200 amp. and during 10 minutes is gradually increased to the final value of 500 amp. The final voltage is 27 volts. After 12 minutes the mass has been melted. The pressure in the furnace rises to 1400 mm. Hg. Melting the remainder of the buttons, which are gradually added to the melt by a suitable device, takes 25 additional minutes. After the melting has been completed the furnace is tilted whereafter the metal flows into the chill mould preheated to 500 deg. C.
Example Percent byweight Ti Sn Zr Ce Fe Al References Cited in the file of this patent UNITED STATES PATENTS Hoffman Oct. 24, 1911 Anicetti Dec. 6, 1949 OTHER REFERENCES Explosive Characteristics of Titanium, Zirconium, Thorium, Uranium and Their Hydrides, Bureau of Mines Report of Investigations 4835, U. S. Dept. of Interior, December 1951, pages 1, 2 and 16.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2815281X | 1953-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2815281A true US2815281A (en) | 1957-12-03 |
Family
ID=3690443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US410028A Expired - Lifetime US2815281A (en) | 1953-02-26 | 1954-02-12 | Pyrophoric alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2815281A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3036961A (en) * | 1958-02-24 | 1962-05-29 | Herasymenko Anna | Electrolytic refinement of metals |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1006849A (en) * | 1910-12-29 | 1911-10-24 | Georg Friedrich Hofmann | Pyrophoric metal alloy. |
| US2490571A (en) * | 1948-12-29 | 1949-12-06 | Metal Hydrides Inc | Pyrophoric alloy of zirconium, lead, and titanium, and sparking device containing the same |
-
1954
- 1954-02-12 US US410028A patent/US2815281A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1006849A (en) * | 1910-12-29 | 1911-10-24 | Georg Friedrich Hofmann | Pyrophoric metal alloy. |
| US2490571A (en) * | 1948-12-29 | 1949-12-06 | Metal Hydrides Inc | Pyrophoric alloy of zirconium, lead, and titanium, and sparking device containing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3036961A (en) * | 1958-02-24 | 1962-05-29 | Herasymenko Anna | Electrolytic refinement of metals |
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