Characterization of Vacuum Plasma Sprayed Reinforced Hydroxyapatite Coatings on Ti–6Al–4V alloy

被引：0
作者：
Amardeep Singh
Gurbhinder Singh
Vikas Chawla
机构：
[1] I. K. Gujral Punjab Technical University,
[2] Guru Kashi University,undefined
[3] Ferozepur College of Engineering and Technology,undefined
来源：
Transactions of the Indian Institute of Metals | 2017年 / 70卷
关键词：
Vacuum plasma spray; Characterization; Hydroxyapatite; Bond coat; Reinforcement; Mechanical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Two reinforced hydroxyapatite (HA) coatings with an intermediate layer of zirconia were deposited on Ti–6Al–4V by vacuum plasma spray (VPS) technique. In first coating, HA was reinforced with 10 wt % Al2O3 whereas in second coating, HA was reinforced with 10 wt % ZrO2. The objective of this study was to investigate the microstructure, phase formation and mechanical properties like hardness and bond strength of as-sprayed coatings and the coatings after post coating heat treatment at 700 °C for 1 h. The characterization of the coatings was performed by using SEM/EDAX, XRD, porosity, crystallinity and roughness measurement. The coatings were also evaluated for mechanical properties like hardness and tensile bond strength. It was observed that after post coating heat treatment, crystallinity increased and porosity decreased which indicated recrystallization of amorphous phases of as-sprayed coatings. Heat treatment resulted into improvement in cross-sectional hardness, however sharp decrease in bond strength was observed.
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页码：2609 / 2628
页数：19
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