Microstructures and bond strengths of plasma-sprayed hydroxyapatite coatings on porous titanium substrates

被引：0
作者：
Ik-Hyun Oh
N. Nomura
A. Chiba
Y. Murayama
N. Masahashi
Byong-Taek Lee
S. Hanada
机构：
[1] Korea Institute of Industrial Technology (KITECH),Department of Welfare Engineering
[2] Iwate University,Institute for Materials Research (IMR)
[3] Tohoku University,School of Advanced Materials Engineering
[4] Kongju National University,undefined
来源：
Journal of Materials Science: Materials in Medicine | 2005年 / 16卷
关键词：
Microstructure; Titanium; Surface Roughness; Apatite; Hydroxyapatite;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Hydroxyapatite (HA) coating was carried out by plasma spraying on bulk Ti substrates and porous Ti substrates having a Young’s modulus similar to that of human bone. The microstructures and bond strengths of HA coatings were investigated in this study. The HA coatings with thickness of 200–250 μ m were free from cracks at interfaces between the coating and Ti substrates. XRD analysis revealed that the HA powder used for plasma spraying had a highly crystallized apatite structure, while the HA coating contained several phases other than HA. The bond strength between the HA coating and the Ti substrates evaluated by standard bonding test (ASTM C633-01) were strongly affected by the failure behavior of the HA coating. A mechanism to explain the failure is discussed in terms of surface roughness of the plasma-sprayed HA coatings on the bulk and porous Ti substrates.
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页码：635 / 640
页数：5
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