Bioglass coated A1203 ceramics

Details Bioglass coated A1203 ceramics Bioglass coated A1203 ceramics

1977-02-08

1978-07-25

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

427190, 427257, 427269, 427279, 427398R, 428426, 428428, 428432, B32B 1706, B32B 3124, B32B 3126

Patent

active

041030028

ABSTRACT:
A method of coating a Al.sub.2 O.sub.3 ceramic surface with a biologically active glass comprising contacting a glass and ceramic having different thermal coefficients of expansion at a temperature sufficient to bond the glass to the ceramic surface by ion diffusion, cooling the coated substrate to a temperature sufficient to produce thermo-mechanical stress induced interconnected micro-cracks in the glass coating and overcoating said micro-cracked glass coating with at least one additional coating of biologically active glass. The invention includes a product of manufacture comprising a compacted Al.sub.2 O.sub.3 ceramic surface coated with at least two layers of biologically active glass characterized in that the first layer of glass has interconnected thermo-mechanical stress induced micro-cracks therein.

REFERENCES:
patent: 2866720 (1958-12-01), Martin et al.
patent: 3900630 (1975-08-01), Makishima et al.
patent: 3934961 (1976-01-01), Itch et al.

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