Process of forming HA/ZrO2 complex coating on Co—Cr—Mo alloy
AssigneeChinese Petroleum Corporation
InventorShiow-Kang Yen
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Abstract
In a process of forming a HA/ZrO2 complex coating on a Co—Cr—Mo alloy substrate, the substrate is subjected to electrolytic deposition respectively in a ZrO(NO3)2 bath and a mixed solution of Ca(NO3)2.4H2O and NH4H2PO4 to respectively form Zr(OH)4 colloidal layer and Ca10(PO4)6(OH)2 layer. Then, the substrate is subjected to a low-temperature sintering process to convert the two layers into a HA/ZrO2 complex coating.
Claims39
A process of forming a HA/ZrO2 complex coating on a Co—Cr—Mo alloy substrate, the Co—Cr—Mo substrate being subject to an electrolytic deposition sequentially in a ZrO(NO3)2 bath and a mixed solution of Ca(NO3)2.4H2O and NH4H2PO4, and then the substrate being sintered to form the HA/ZrO2 complex coating on the Co—Cr—Mo substrate.
A process of forming a HA/ZrO2 complex coating on a Co—Cr—Mo alloy substrate, the Co—Cr—Mo substrate being subjected to an electrolytic deposition sequentially in a ZrO(NO3)2 bath and a mixed solution of Ca(NO3)2.4H2O and NH4H2PO4, then the substrate being slowly dried, and the substrate being sintered at a temperature not higher than 500° C. to form the HA/ZrO2 complex coating on the Co—Cr—Mo substrate, wherein the sintering temperature is raised at several temperature stages.
Dependencies are inferred from the claim text.