Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics
Patent
1994-04-29
1995-03-14
Group, Karl
Compositions: ceramic
Ceramic compositions
Devitrified glass-ceramics
501 32, 501 70, 501 73, C03C 1006, C03C 1400
Patent
active
053977505
ABSTRACT:
An aluminum article having a mirror-like surface and an improved working tool and method for fabricating the article from an aluminum blank, the tool comprising a mechanically strong, abrasion-resistant body against which the aluminum blank is forced under pressure, the tool body comprising a whisker-reinforced, crystalline body consisting essentially of about 5-35 weight % of SiC whiskers and 65-95 weight % of a crystalline matrix. The predominant crystal phase in the crystalline matrix may be a CaO--Al.sub.2 O.sub.3 --SiO.sub.2 crystal phase.
REFERENCES:
patent: 4615987 (1986-10-01), Chyung et al.
patent: 4626515 (1986-12-01), Chyung et al.
patent: 4755489 (1988-07-01), Chyung et al.
patent: 4769346 (1988-09-01), Gadkaree et al.
patent: 4846866 (1989-07-01), Chyung et al.
Corning Incorporated
Group Karl
Janes Jr. Clinton S.
Peterson Milton M.
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