Microstructure and Properties of Interpenetrating (HA plus β-TCP)/Mg-3Zn Composites Fabricated by Suction Casting

作者：Wang Xiang^*; Nie Qidong; Li Jingtao; Ma Xuliang; Li Xinlin

来源：Rare Metal Materials and Engineering, 2018, 47(10): 3080-3087.

• HA plus beta-TCP)/Mg-3Zn composites
• suction casting
• microstructure
• corrosion behavior

The interpenetrating (HA+beta-TCP)/Mg-3Zn composites were fabricated by infiltrating Mg-3Zn alloy into porous HA+beta-TCP with different HA contents using suction casting technique, and the microstructure, mechanical properties and corrosion behavior of the composites were evaluated. Results show that the molten Mg-3Zn alloy not only infiltrates into the pores but also infiltrates into the struts of the porous HA+beta-TCP scaffold to form a compact composite. The Mg-3Zn alloy is in close contact with the HA+beta-TCP scaffold, and no reaction layer can be found. The compressive strength of the (HA+beta-TCP)/Mg-3Zn composites with different HA content is 115-196 MPa, which is about 350-fold higher than that of the original porous HA+beta-TCP scaffold and accounts for 44%-75% of the strength of the Mg-3Zn bulk alloy. The corrosion resistance of the composites is better than that of the Mg-3Zn bulk alloy, and the mechanical properties and corrosion behavior of the composites can be controlled by the HA/beta-TCP ratio.

• 出版日期2018-10
• 单位哈尔滨学院; 哈尔滨工程大学