Metal matrix composite and process for producing the same

Details Metal matrix composite and process for producing the same Metal matrix composite and process for producing the same

1996-02-27

1998-06-09

Chin, Peter

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428469, 419 19, B32B 1516, C22C 3200

Patent

active

057631093

ABSTRACT:
A metal matrix composite comprising 2 to 80 volume % of .alpha.-alumina powder as a reinforcement, said .alpha.-alumina powder comprises polyhedral primary particles substantially having no fracture surface, D50 of .alpha.-alumina powder is 0.1 .mu.m to 50 .mu.m and a ratio of D50 to D10 is not more than 2, wherein D10 and D50 are particle sizes at 10% and 50% cumulation from the smallest particle side of a weight cumulative particle size distribution, respectively, and a process for producing the metal matrix composite which comprises infiltrating a molten metal into the .alpha.-alumina powder under pressure or non-pressure.

REFERENCES:
patent: 4935055 (1990-06-01), Aghajanian et al.
patent: 5523074 (1996-06-01), Takahashi et al.
patent: 5612267 (1997-03-01), Bachelard et al.
"The Effect of Particulate Loading on the Mechanical Behaviour of Al.sub.2 O.sub.3 /Al Metal-Matrix Composites," M.K. Aghajanian, et al., Journal of Materials Science, 28, 1993, pp. 6683-6690 No month available.
Keikinzoku-gakkai, 8th Spring Meeting (1993.5) Abstract (with complete translation).
"Aluminium Alloy-Al.sub.2 O.sub.3 Platelets Composite Processing and Mechanical Properties," V. Massardier et al., Riso International Symposium of Materials Science (12th) Roskilde, pp. 503-508.

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