GB821336A - Improvements in and relating to alloys - Google Patents
Improvements in and relating to alloysInfo
- Publication number
- GB821336A GB821336A GB26648/56A GB2664856A GB821336A GB 821336 A GB821336 A GB 821336A GB 26648/56 A GB26648/56 A GB 26648/56A GB 2664856 A GB2664856 A GB 2664856A GB 821336 A GB821336 A GB 821336A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- particles
- coated
- refractory material
- refractory
- 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
- 229910045601 alloy Inorganic materials 0.000 title abstract 3
- 239000000956 alloy Substances 0.000 title abstract 3
- 239000002184 metal Substances 0.000 abstract 7
- 229910052751 metal Inorganic materials 0.000 abstract 7
- 239000011819 refractory material Substances 0.000 abstract 5
- 229910052759 nickel Inorganic materials 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 4
- 239000000203 mixture Substances 0.000 abstract 3
- 229910052719 titanium Inorganic materials 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000011246 composite particle Substances 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 229910052758 niobium Inorganic materials 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 229910052715 tantalum Inorganic materials 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 abstract 2
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract 1
- 238000005234 chemical deposition Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000005242 forging Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 229910052735 hafnium Inorganic materials 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 125000005843 halogen group Chemical group 0.000 abstract 1
- 238000007731 hot pressing Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000002923 metal particle Substances 0.000 abstract 1
- 150000004767 nitrides Chemical class 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 229910021332 silicide Inorganic materials 0.000 abstract 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 abstract 1
- 238000005979 thermal decomposition reaction Methods 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
Abstract
A composition of matter suitable for the powder metallurgical production of wrought reinforced products comprises composite particles not over 40 microns in size, the particles containing high melting point hard refractory material and a ductile metal, the particles of one constituent being coated by the other and the hard refractory material forming 0.5-25% by volume of the total composition. For a composite powder up to 5 microns in size the refractory material preferably forms 2-15% by volume of the total composition, the metal when coated on refractory particles has a thickness 0.05-1 micron and the refractory material when coated on metal has a thickness ranging up to 0.3 micron. The refractory material may be an oxide of Ca, Be, Mg, Al, Ti, Zr, Si, Cr, Th or Ce or a silicide, boride, carbide or nitride of W, Mo, Cr, Ti, Zr, Ta, Nb or Hf. The metal may be Fe, Ni or Co or an alloy thereof with Cr. Such an alloy may contain Cr 5-30%, Fe up to 25%, Ni up to 90%, Co up to 70%, the total content of Ni and Co being at least 40%, with or without one or more of W, Mo, Nb, Ta, Ti, Al, Mn, Si, B, C and N. Refractory particles may be coated with Ni or Co by chemical deposition from solution, thermal decomposition of the carbonyls or halides or by thermal vaporization of the metal in vacuo. Metal particles may be coated with refractory oxide by first depositing the metal of the oxide by vapour deposition, or decomposition of halides and then oxidizing the metal coating. The composite particles are formed into shaped bodies by cold pressing under a pressure of 30-150 tons per square inch or hot pressing under a pressure below 30 tons per square inch and then sintering at a temperature from 1100 DEG C up to less than 5 DEG C below the incipient fusion point. Sintering may be performed in two stages of increasing temperature. The sintered body may be hot worked by extrusion, forging or swaging to reduce it in cross-section by not less than 50%, preferably 90-95%. Specification 807,093 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US821336XA | 1955-09-15 | 1955-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB821336A true GB821336A (en) | 1959-10-07 |
Family
ID=22169276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26648/56A Expired GB821336A (en) | 1955-09-15 | 1956-08-31 | Improvements in and relating to alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB821336A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139334A (en) * | 1961-09-29 | 1964-06-30 | Lead Ind Ass Inc | Atomized lead-aluminum alloy powder article |
| US4156053A (en) * | 1976-09-07 | 1979-05-22 | Special Metals Corporation | Method of making oxide dispersion strengthened powder |
| DE3115725A1 (en) * | 1980-04-24 | 1982-05-06 | Commonwealth Scientific and Industrial Research Organization, 2033 Kensington, N.S.W. | DEVICE AND METHOD FOR COATING PARTICLES |
| RU2455377C2 (en) * | 2010-06-24 | 2012-07-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" | Method to produce metal-boride composite powders of molybdene and tungsten |
| RU2468890C2 (en) * | 2008-04-24 | 2012-12-10 | БОДИКОУТ АйЭмТи, ИНК. | Composite billet with porosity fraction controlled in, at least, one layer, methods of its production and use |
-
1956
- 1956-08-31 GB GB26648/56A patent/GB821336A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139334A (en) * | 1961-09-29 | 1964-06-30 | Lead Ind Ass Inc | Atomized lead-aluminum alloy powder article |
| US4156053A (en) * | 1976-09-07 | 1979-05-22 | Special Metals Corporation | Method of making oxide dispersion strengthened powder |
| DE3115725A1 (en) * | 1980-04-24 | 1982-05-06 | Commonwealth Scientific and Industrial Research Organization, 2033 Kensington, N.S.W. | DEVICE AND METHOD FOR COATING PARTICLES |
| RU2468890C2 (en) * | 2008-04-24 | 2012-12-10 | БОДИКОУТ АйЭмТи, ИНК. | Composite billet with porosity fraction controlled in, at least, one layer, methods of its production and use |
| RU2455377C2 (en) * | 2010-06-24 | 2012-07-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" | Method to produce metal-boride composite powders of molybdene and tungsten |
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