Plasma Spray Deposition of HA-TiO2 on β-phase Ti-35Nb-7Ta-5Zr Alloy for Hip Stem: Characterization of Bio-mechanical Properties, Wettability, and Wear Resistance
作者机构：School of Mechanical EngineeringLovely Professional UniversityPhagwaraPunjab-144411India Mechanical EngineeringNational University of SingaporePincode-119244Singapore
出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)
年 卷 期：2020年第17卷第5期
页 面：1029-1044页
核心收录：
学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0836[工学-生物工程] 0702[理学-物理学]
主 题：β-phase Ti-35Nb-7Ta-5Zr alloy plasma spray porosities bio-ceramic coating nano-indentation hardness bond strength wettability
摘 要：In this work,a biomimetic coating of hydroxyapatite(HA)-and titania(TiO2)was deposited on low elastic β-phase Ti-35Nb-7Ta-5Zr(β-TNTZ)alloy by plasma spray deposition technique for orthopedic *** effect of TiO2 reinforcement on microstructure,mechanical properties,and bioactivity was *** morphology,coating thickness,elemental composition,and phase composition of the developed coatings were *** biomechanical behavior of the deposited coatings was investigated in terms of surface hardness,elastic modulus,and adhesion *** was found from the morphological investigation that the TiO2 reinforcement improves the microstructure and prevents the formation of defects in the *** biomimetic HA-TiO2 coated surface possessed pores,size ranging from 200 nm-600 nm that benefits the apatite growth and *** EDS spectrum,mapping,and XRD analysis show that the deposited layerβ-TCP,CaO,TTCP,TiO2 *** HA-TiO2 coating exhibits a very dense and thick layer of 100μm-125am that exhibits excellent adhesion strength to offer mechanical interlocking to prevent *** alloying of TiO2 improves the hardness from 1.67 GPa to 2.95 GPa that enhances the wear *** was found that HA-TiO2 coating exhibits better hydrophilic and biocompatible surface as compared to HA-coating.
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