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AssigneePermelec Electrode Ltd.
Inventorstakayuki Shimamune, Masashi Hosonuma, Yukiei Matsumoto
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A titanium composite material is disclosed which comprises a titanium or titanium alloy substrate, a base layer formed thereon of a calcium phosphate compound resulting from calcination of a hydrochloric or nitric acid aqueous solution of the calcium phosphate compound, and a covering layer thereon of a calcium phosphate compound formed by sintering a suspension of the calcium phosphate compound applied to the base layer. The composite material is useful as a biological implant. It is produced by activating the surface of the substrate, forming the base layer by calcining the solution coated on the substrate and then forming the covering layer by sintering the suspension coated on the base layer. The covering layer may be hydrothermally treated to increase its crystallinity.
A process for producing a titanium composite material, which comprises activating the surface of a titanium or titanium alloy substrate, coating a hydrochloric or nitric acid aqueous solution of a calcium phosphate compound, said solution containing at least one substance selected from titanium, titanium compounds, tin, and tin comopunds, on the activated surface of the substrate, calcining the coating to form a base layer of the calcium phosphate compound on the substrate, thereafter coating a suspension of a calcium phosphate compound on the base layer, and sintering the coating to form a covering layer of the calcium phosphate compound.
A process for producing a titanium composite material, which comprises activating the surface of a titanium or titanium alloy substrate, coating a hydrochloric or nitric acid aqueous solution of a calcium phosphate compound, said solution containing at least one substance selected from titanium, titanium compounds, tin, and tin compounds on the activated surface of the substrate, calcining the coating to form a base layer of the calcium phosphate compound on the substrate, thereafter coating a suspension of a calcium phosphate compound on the base layer, sintering the coating to form a covering layer of the calcium phosphate compound, and gydrothermally treating the covering layer.
Dependencies are inferred from the claim text.