Gao Yali1, Xiong Dangsheng1, Wang Cunshan2, et al. Laser Cladding Hydroxypatite Coating on Magnesium Alloy for Biomaterials Application. [J]. Special Casting & Nonferrous Alloys 29(4):305-307(2009)
Gao Yali1, Xiong Dangsheng1, Wang Cunshan2, et al. Laser Cladding Hydroxypatite Coating on Magnesium Alloy for Biomaterials Application. [J]. Special Casting & Nonferrous Alloys 29(4):305-307(2009)DOI:
Laser Cladding Hydroxypatite Coating on Magnesium Alloy for Biomaterials Application
摘要
为改善医用镁合金表面耐蚀性和生物相容性
采用激光熔覆技术在AZ91D镁合金表面制备具有生物活性的羟基磷灰石涂层。结果表明
所制备的涂层和镁合金基体达到了良好的冶金结合
涂层显微结构为致密的胞状晶
主要由Mg、HA、CaH2P2O7和CaH4(PO3)2.H2O组成
其中Ca和P的摩尔比为1.73
接近理论值1.67
从而大大提高了涂层的生物活性。另外
控制Mg对涂层的稀释对涂层制备起关键作用。
Abstract
In order to improve the corrosion resistance and biocompatibility of the magnesium alloy for biomaterials application
hydroxypatite coating with the biology activity on AZ91D Mg alloy was prepared by laser cladding method. The results show that prepared coating exhibits desirable bonding with magnesium alloy substrate
and microstructure of the exhibits is the compact cellar grain
and it is composed of Mg
HA
CaH2P2O7 and CaH4(PO3)2H2O
in which atomic ratio of Ca via P is 1.73
closing to theoretical value of 1.67
so the biological activity of the coating exhibits improved significantly. In addition
controlling dilution of magnesium plays a key role in the preparation of the coating.