GB820649A - Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloys - Google Patents
Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloysInfo
- Publication number
- GB820649A GB820649A GB3584556A GB3584556A GB820649A GB 820649 A GB820649 A GB 820649A GB 3584556 A GB3584556 A GB 3584556A GB 3584556 A GB3584556 A GB 3584556A GB 820649 A GB820649 A GB 820649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molybdenum
- chromium
- temperature
- base alloys
- vapour
- 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
Links
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052750 molybdenum Inorganic materials 0.000 title abstract 4
- 239000011733 molybdenum Substances 0.000 title abstract 4
- 239000000956 alloy Substances 0.000 title abstract 3
- 229910045601 alloy Inorganic materials 0.000 title abstract 3
- 238000000576 coating method Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000011651 chromium Substances 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 abstract 1
- 229910000599 Cr alloy Inorganic materials 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 239000000788 chromium alloy Substances 0.000 abstract 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005254 chromizing Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000005049 silicon tetrachloride Substances 0.000 abstract 1
- 238000005475 siliconizing Methods 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/58—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in more than one step
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
- C23C10/16—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases more than one element being diffused in more than one step
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
A binary refractory coating consisting mainly of disilicides is formed on molybdenum and molybdenum-base alloys by first diffusing chromium into the surface thereof at a temperature of not more than 1300 DEG C. to produce a molybdenum-chromium alloy surface layer not more than 0.001 in. thick and containing not less than 40% chromium, and then diffusing silicon through the alloy layer and into the molybdenum at a temperature of not more than 1300 DEG C. The chromizing and siliconizing may be performed by vapour-diffusion or vapour-pack-diffusion processes. In the preferred sequence of operations the molybdenum is (1) degreased and washed in aqueous sodium hydroxide, (2) etched in nitric acid, (3) annealed at 1300 DEG C., raising the temperature over four hours and then cooling for two hours in hydrogen, (4) chromized by the iodide pack method, and (5) siliconized in a silicon tetrachloride/hydrogen gas mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3584556A GB820649A (en) | 1956-11-23 | 1956-11-23 | Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3584556A GB820649A (en) | 1956-11-23 | 1956-11-23 | Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820649A true GB820649A (en) | 1959-09-23 |
Family
ID=10382146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3584556A Expired GB820649A (en) | 1956-11-23 | 1956-11-23 | Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB820649A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117846A (en) * | 1960-01-28 | 1964-01-14 | Pfaudler Permutit Inc | Multi layer difusion coatings and method of applying the same |
| EP0007675A1 (en) * | 1978-07-21 | 1980-02-06 | Elbar B.V. | Process for applying a protective coating containing silicon to articles made from a superalloy |
| US4687684A (en) * | 1984-11-29 | 1987-08-18 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Process for diffusion coating metals |
| CN103643201A (en) * | 2014-01-13 | 2014-03-19 | 沈阳建筑大学 | Mo-based Mo+Si+Cr+Fe coating layer composite material and preparation method thereof |
| CN115558831A (en) * | 2022-10-25 | 2023-01-03 | 北京酷捷科技有限公司 | Chromium-molybdenum composite material and preparation method and application thereof |
-
1956
- 1956-11-23 GB GB3584556A patent/GB820649A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117846A (en) * | 1960-01-28 | 1964-01-14 | Pfaudler Permutit Inc | Multi layer difusion coatings and method of applying the same |
| EP0007675A1 (en) * | 1978-07-21 | 1980-02-06 | Elbar B.V. | Process for applying a protective coating containing silicon to articles made from a superalloy |
| US4687684A (en) * | 1984-11-29 | 1987-08-18 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Process for diffusion coating metals |
| CN103643201A (en) * | 2014-01-13 | 2014-03-19 | 沈阳建筑大学 | Mo-based Mo+Si+Cr+Fe coating layer composite material and preparation method thereof |
| CN115558831A (en) * | 2022-10-25 | 2023-01-03 | 北京酷捷科技有限公司 | Chromium-molybdenum composite material and preparation method and application thereof |
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