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Author(s): |
Min-fang Chen, School of Minerals Science& Engineering, Tianjin University of Technology, Tianjin, 300384，China
Zi-biao Li, School of Minerals Science& Engineering, Tianjin University of Technology, Tianjin, 300384，China
Jing-wei Zhang, School of Minerals Science& Engineering, Tianjin University of Technology, Tianjin, 300384，China
Sheng-ying He, School of Minerals Science& Engineering, Tianjin University of Technology, Tianjin, 300384，China
Geng-hua Cao, School of Minerals Science& Engineering, Tianjin University of Technology, Tianjin, 300384，China |
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Abstract: |
In this work, the Mg-3Zn-Ca alloy and Mg-3Zn-Ca /xwt%HA (x =0,1,3,5）composites were melted under stirring. The phases, microstructure and grain size, distribution and component of HA particles, hardness and electrochemical properties of alloy and composites were investigated by XRD, The optical microscopy， SEM, EDX and electrochemical Analytical System. The effect of nano particles HA on the mechanical properties and corrosion behavior of Mg-3Zn-Ca alloys and Mg-3Zn-Ca /xHA composites were analysed. The results show: the addition of nano particles HA could significantly refine the grains of Mg-Zn-Ca alloy and improve its mechanical properties and corrosion resistance markedly, but the enhancement of the hardness is not sensitive to the content of the HA. Taking mechanical, electrochemical and other factors into account, (1~3) %HA nano particles were surgested to be the best composition.
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