Active HA coating prepared by compounding laser cladding and cold spraying and preparation method of active HA coating

A laser cladding and cold spraying technology, applied in the field of medical materials, can solve the problems of weak bonding strength and poor biocompatibility of HA coating, and achieve poor bonding ability, good biocompatibility, and improved service life. Effect

Inactive Publication Date: 2022-02-11
JIANGSU UNIV OF TECH
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Problems solved by technology

[0011] In order to solve the problems of weak bonding strength between the HA coating and the Ti-6Al-4V titanium alloy substrate and poor biocompatibility of the HA coating existing in the prior art, the present invention provides a laser cladding and cold spray coating Composite prepared active HA coating and preparation method thereof

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  • Active HA coating prepared by compounding laser cladding and cold spraying and preparation method of active HA coating

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[0039] Such as figure 1 As shown, a preparation method of laser cladding and cold spraying combined to prepare active HA coating, mixing Cu metal powder and Ti-6Al-4V alloy powder into the first mixed powder, wherein the content of Cu metal powder is in the range of 10.0wt %~15.0wt%, the content range of Ti-6Al-4V alloy powder is 85.0wt%~90.0wt%, the main elements and mass percentage range of Ti-6Al-4V alloy powder are as follows: 5.50%~6.80%Al, 3.40% ~4.50% V, 0.25%~0.30% Fe, 0.05%~0.10% C, the balance is Ti, the first mixed powder is used as the laser cladding material of fusion layer 2; Cu metal powder and Ca(HPO 4 ) 2 ·H 2 O powder is mixed into the second mixed powder, wherein, Cu metal powder content ranges from 5.0wt% to 10.0wt%, Ca (HPO 4 ) 2 ·H 2 O powder content ranges from 90.0wt% to 95.0wt%, Ca(HPO 4 ) 2 ·H 2 The main elements and mass percentage ranges of O powder are as follows: 88wt% ~ 94wt% Ca (HPO 4 ) 2 ·H 2 O, 6.8wt% ~ 7.2wt% H 3 ·PO 4 , 0.03wt% ...

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Abstract

The invention belongs to the technical field of medical materials, and particularly relates to a preparation method of an active HA coating prepared by compounding laser cladding and cold spraying, and the preparation method comprises the following steps: 1, removing corrosion on the surface of a titanium alloy base material; 2, drying a first mixed powder and a second mixed powder; 3, clamping the titanium alloy base material; 4, setting inert gas protection, achieving the sealing of the inert gas protection box, injecting argon into the inert gas protection box, and detecting the oxygen content in the inert gas protection box, wherein the oxygen content in the inert gas protection box is kept to be not higher than 100 ppm; 5, preparing a fusion layer through a laser cladding technology, wherein argon serves as powder feeding carrier gas and molten pool shielding gas, remanufacturing forming is conducted in a four-way coaxial powder feeding mode, and the height of the fusion layer is not larger than 1 mm; and 6, preparing a covering layer through a cold spraying technology, and through an electric arc cold spraying technology, allowing a spray gun to conduct movable spraying on the fusion layer.

Description

technical field [0001] The invention belongs to the technical field of medical materials, in particular to an active HA coating prepared by laser cladding and cold spraying and a preparation method thereof. Background technique [0002] Due to its good biocompatibility, corrosion resistance and excellent mechanical properties, medical Ti-6Al-4V titanium alloy has a large number of applications in medical fields such as human bone implant substitutes, artificial joint replacements and artificial tooth inlays. However, due to the lack of biological activity, mechanical differences, non-osseointegration, and release of toxic ions, this type of alloy medical device is likely to cause human sensitization, inflammation, blood acid, and mechanical damage under the action of external force and long-term erosion of body fluids. Adverse reactions such as shielding. [0003] Hydroxyapatite (referred to as HA) (chemical formula is Ca 5 (PO 4 ) 3 (OH)) has good biocompatibility, is c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C23C4/131C23C4/04
CPCC23C24/10C23C4/131C23C4/04
Inventor 任维彬吴鹏周士清周云立王瑞博马子涵
Owner JIANGSU UNIV OF TECH
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