Coatings, coated articles and methods of manufacture thereof
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United States of America Patent
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Jan 22, 2008
Grant Date -
Sep 14, 2006
app pub date -
May 5, 2006
filing date -
Oct 12, 2001
priority date (Note) -
Expired
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Abstract
A multi-layer coating is particularly useful for the coating of implants such as orthopedic and dental implants, particularly metallic implants. The multi-layer coating has both high bond strength to implants and excellent bioactivity with the surrounding body tissue. A method of making a coated implant includes depositing a first layer on a metallic substrate, wherein the first layer comprises a material selected from the group consisting of nitride compounds, boride compounds, carbide compounds, and mixtures of two or more of the foregoing materials; forming at least one slurry comprising an apatite and a binder, wherein the apatite has greater than about 90% crystallinity, and wherein the binder is inert in body fluids; depositing the slurry on the first layer to form a green coating; and sintering the green coating to form a second layer.
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