Fabrication,property characterization and toughening mechanism of HA-ZrO_2(CaO)/316L fibre composite biomaterials

作     者：ZOU JianPeng1, HE ZeQiang2, ZHOU ZhongCheng1, HUANG BaiYun1, CHEN QiYuan3 & RUAN JianMing1 1 State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China 2 Institute of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China 3 Institute of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China 

作者机构：State Key Laboratory for Powder Metallurgy Central South University Changsha China Institute of Chemistry and Chemical Engineering Jishou University Jishou China Institute of Chemistry and Chemical Engineering Central South University Changsha China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2008年第51卷第7期

页      面：957-967页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China (Grant No. 50604017) the Postdoctoral Science Foundation of Central South University 

主　　题：vacuum sintering fabrication property characterization toughening mechanism biomaterials 

摘      要：HA-ZrO2(CaO)/316L fibre composites were successfully fabricated with vacuum sintering method and their properties and toughening mechanism were studied. The results showed that HA-ZrO2(CaO)/316L fibre biocomposite having 20 vol% fibres had optimal comprehensive properties with bending strength, Young s modulus, fracture toughness and relative density equal to 140.1 MPa, 117.8 GPa, 5.81 MPa·m1/2 and 87.1%, respectively. The research also addressed that different volume ratios of the composites led to different metallographic microstructures, and that metallographic morphologies change regularly with volume ratios of the composites. 316L fibres were distributed randomly and evenly in the composites and the integration circumstance of the two phases was very well since there were no obvious flaws or pores in the composites. Two toughening mechanisms including ZrO2 phase transformation toughening mechanism and fibre pulling-out toughening mechanism existed in the compsites with the latter being the main toughening mechanism.