Compositions: ceramic – Ceramic compositions – Refractory
Patent
1990-10-04
1992-01-21
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Refractory
501 1, 106 35, C04B 3502, C04B 3510, C04B 3556, C04B 3558
Patent
active
050828088
ABSTRACT:
A ceramic material for use as artificial bone and dental root is provided which takes the form of a composite sintered body comprising crystalline calcium phosphate grains as a matrix and inorganic whiskers dispersed therein. An intermediate layer containing elements in either one or both of the whiskers and the grains intervenes between the whiskers and the grains. The material has physical toughness and strength as well as biomedical affinity. The material is prepared by mixing calcium phosphate and a whisker-forming material or whiskers and sintering the mixture at a temperature of 800.degree. to 1600.degree. C., followed by slow cooling to allow formation of the intermediate layer.
REFERENCES:
patent: 4230455 (1980-10-01), Hidata et al.
patent: 4503157 (1985-03-01), Hatahira
patent: 4772573 (1988-09-01), Toriyama et al.
WPIL File Supplier Accession No. 88-327454 [46] JP 63242263 Abstract.
Nonami Tohru
Yasui Nobuo
Bell Mark L.
Jones Deborah
TDK Corporation
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