Effect of crystallization on the bonding strength and failures of plasma-sprayed hydroxyapatite

Chung Wei Yang, Truan Sheng Lui

研究成果: Article同行評審

21 引文 斯高帕斯(Scopus)

摘要

Hydroxyapatite coatings were synthesized on T1-6Al-4V substrates using the plasma spraying process followed by vacuum and atmospheric post-heat treatments at various elevated temperatures. This study provides an evaluation of the bonding strength and crystallization rate of HACs resulting from the variations in crystallinity and thermal induced cracking. Experimental results provide evidence that the atmospheric heat-treated HACs possessed higher crystallization rate than the vacuum-heated specimens. It implies that the presence of an atmosphere with moisture plays an important role in improving the crystallization of HACs. The bonding strength of all samples was improved with increasing HA crystallization, and the optimal heating condition was found to be about 600°C. However, the crystallization-induced defects result in a serious microstructure and bonding strength degradation when the heating temperatures were higher than 600°C for both post-heat methods. On the basis of the fracture morphologies observation and the bonding strength data fluctuation of both heating conditions, the Weibull distribution function provides a powerful statistical analysis for assessing the failure mechanism and the reliability of plasma-sprayed and post heat-treated HACs.

原文English
頁(從 - 到)211-218
頁數8
期刊Materials Transactions
48
發行號2
DOIs
出版狀態Published - 2007 2月

All Science Journal Classification (ASJC) codes

  • 一般材料科學
  • 凝聚態物理學
  • 材料力學
  • 機械工業

指紋

深入研究「Effect of crystallization on the bonding strength and failures of plasma-sprayed hydroxyapatite」主題。共同形成了獨特的指紋。

引用此