GB1412415A - Metal powder compacts - Google Patents
Metal powder compactsInfo
- Publication number
- GB1412415A GB1412415A GB5632171A GB5632171A GB1412415A GB 1412415 A GB1412415 A GB 1412415A GB 5632171 A GB5632171 A GB 5632171A GB 5632171 A GB5632171 A GB 5632171A GB 1412415 A GB1412415 A GB 1412415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- powder
- mesh
- mixture
- halide
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
- B22F3/101—Changing atmosphere
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
1412415 Sintering metals in a halide atmosphere UNITED KINGDOM ATOMIC ENERGY AUTHORITY 13 Feb 1973 [3 Dec 1971] 56321/71 Heading C7D A mixture of a metal powder and a minor proportion of another metal powder which forms a solid solution with the first is compacted, heated in a halide vapour above the melting temperature of the formed metal halide and finally sintered and cooled in a reducing atmosphere. The main metal is preferably Fe or an Fe base alloy such as stainless steel and the added metal having an atomic size no more than 15% larger than the main metal may be Sb, Ti, Mo, Sn, Ta, Zn, W. The mesh size of the minor metal additive is preferably smaller than the mesh size of the main metal e.g. mixture of - 200 mesh Fe powder and <0.7 wt per cent - 100 mesh Sn powder. The Fe-Sn compacted mixture was heated in a furnace containing NHuCl or NHuF crystals to within 100‹C of the sintering temperatures, 900- 1200‹C, and then sintered for about 10 minutes at 900-1200‹C in hydrogen. The sintered bodies have improved tensile strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5632171A GB1412415A (en) | 1971-12-03 | 1971-12-03 | Metal powder compacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5632171A GB1412415A (en) | 1971-12-03 | 1971-12-03 | Metal powder compacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1412415A true GB1412415A (en) | 1975-11-05 |
Family
ID=10476334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5632171A Expired GB1412415A (en) | 1971-12-03 | 1971-12-03 | Metal powder compacts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1412415A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2930217A1 (en) * | 1978-07-25 | 1980-02-07 | Snecma | METHOD FOR PRODUCING MOLDED PIECES |
| FR2435534A1 (en) * | 1978-07-25 | 1980-04-04 | Snecma | NOVEL METAL POROUS BODIES AND THEIR PREPARATION PROCESS |
| CN108838389A (en) * | 2018-07-13 | 2018-11-20 | 山东大学 | A kind of powder metallurgy ferrite stainless steel and preparation method thereof |
| CN108838388A (en) * | 2018-07-13 | 2018-11-20 | 山东大学 | A kind of powder metallurgy austenitic stainless steel and preparation method thereof |
-
1971
- 1971-12-03 GB GB5632171A patent/GB1412415A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2930217A1 (en) * | 1978-07-25 | 1980-02-07 | Snecma | METHOD FOR PRODUCING MOLDED PIECES |
| FR2435534A1 (en) * | 1978-07-25 | 1980-04-04 | Snecma | NOVEL METAL POROUS BODIES AND THEIR PREPARATION PROCESS |
| CN108838389A (en) * | 2018-07-13 | 2018-11-20 | 山东大学 | A kind of powder metallurgy ferrite stainless steel and preparation method thereof |
| CN108838388A (en) * | 2018-07-13 | 2018-11-20 | 山东大学 | A kind of powder metallurgy austenitic stainless steel and preparation method thereof |
| CN108838389B (en) * | 2018-07-13 | 2020-07-28 | 山东大学 | Powder metallurgy ferritic stainless steel and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |