GB892575A - Improvements in or relating to the production of aluminium sinter compacts - Google Patents
Improvements in or relating to the production of aluminium sinter compactsInfo
- Publication number
- GB892575A GB892575A GB4241/60A GB424160A GB892575A GB 892575 A GB892575 A GB 892575A GB 4241/60 A GB4241/60 A GB 4241/60A GB 424160 A GB424160 A GB 424160A GB 892575 A GB892575 A GB 892575A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- aluminium
- ratio
- recrystallisation
- micron
- 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
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Powder Metallurgy (AREA)
Abstract
Sintered aluminium compacts are formed by cold or hot pressing and then hot deforming flaky aluminium powder with a mean grain size of 10 micron to 200 micron, an oxide content of 2% to 13%, a surface area of 2 to 12 sq. metres per gram, and a recrystallisation ratio of between 1,1 and 1,7 to 1. The recrystallisation ratio is the ratio between the size of the exposed areas of the crystals of the powder at 400 DEG C. and that of the exposed areas of the crystals prior to heating. The powder may also contain up to 35% of silicon, oxides, aluminides, carbides and silicides and up to 60% of atomised aluminium powder. The ratio of the total oxide content of the aluminium powder to the surface area of the powder should not exceed 5. The flake aluminium powder is produced by shredding aluminium foil and then dry grinding. In the examples aluminium flake is mixed with silicon powder in the ratio of 3 to 1 and 6 to 1, cold pressed at 2,2 ton per sq. cm., heated to 440 DEG C. and finally extruded into rods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE892575X | 1959-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB892575A true GB892575A (en) | 1962-03-28 |
Family
ID=6846349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4241/60A Expired GB892575A (en) | 1959-02-06 | 1960-02-05 | Improvements in or relating to the production of aluminium sinter compacts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB892575A (en) |
-
1960
- 1960-02-05 GB GB4241/60A patent/GB892575A/en not_active Expired
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