Cold process for hydroxyapatite coatings

Details Cold process for hydroxyapatite coatings Cold process for hydroxyapatite coatings

1994-11-25

1995-10-17

Niebling, John

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423308, 205220, 205318, 204100, C25D 908

Patent

active

054588634

ABSTRACT:
The invention is a method, involving temperatures between room temperature and 100.degree. C., for coating a metal substrate with hydroxyapatite. The intended application is coating porous metal coats of orthopedic and endosseous implants such that the underlying metal is not sintered and the hydroxyapatite coating has chemical and physical properties that are close to biological apatite. The method involves: (i) cleaning the metal substrate, (ii) coating the metal substrate with brushite by electrodeposition at room temperature, (iii) dislodging bubbles periodically during brushite electrodeposition, and (iv) converting the brushite coating to hydroxyapatite at a temperature between room temperature and 100.degree. C.

REFERENCES:
patent: 4335086 (1982-06-01), Spencer
patent: 5310464 (1994-05-01), Redepenning

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