摘要
采用等离子喷涂方法，在Ｔｉ－６Ａｌ－４Ｖ基体上成功地制备了ＨＡ／Ｔｉ复合涂层，并对复合涂层的微观结构、相组成和力学性能进行了研究．结果表明，ＨＡ和Ｔｉ两相均匀地分布于复合涂层中．ＨＡ／Ｔｉ复合涂层的结合强度明显高于纯 ＨＡ涂层，这主要是由于 ＨＡ／Ｔｉ的复合缓和了涂层与基体之间的热膨胀系数失配．ＨＡ／Ｔｉ复合涂层在模拟体液中浸泡一段时间后，结合强度没有明显降低．ＨＡ／Ｔｉ复合涂层的断裂韧性和硬度均高于 ＨＡ涂层．
HA/Ti composite coatings on Ti-6Al-4V substrate were successfully deposited via plasma spraying, and then the microstructure, phase composition and mechanical properties were investigated. The results obtained indicate that the phases of HA and Ti are well-distributed in the composite coatings. The bonding strengthes of HA/Ti composite coatings are much higher than that of HA coating, that is explained in terms of the reduction of the mismatch of thermal expansion coefficients between coating and substrate. The value of bonding strength of HA/Ti composite coating does not obviously vary with the immersion time in simulated body fluid. Fracture toughness and hardness of HA/Ti composite coatings are higher than that of HA coating.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第5期897-902,共6页
Journal of Inorganic Materials
基金
国家重点基础研究发展规划项目!(G1999064706)
上海市新材料中心基金!(97JC14010)
关键词
HA涂层
Ti复合涂层
等离子喷涂
生物陶瓷
hydroxyapatite coating
HA/Ti composite coating
plasma spray
bonding strength
