摘要
以碳酸氢铵作为造孔剂,采用粉末冶金法在真空条件下制备多孔Ti-Mo合金,研究不同的钼含量和烧结温度对其相结构、孔隙形貌、孔隙率、抗压强度及耐腐蚀性能的影响。结果表明:多孔Ti-Mo合金具有α+β双相组织,孔径在25~380μm之间,平均孔径为66μm;随着钼含量的增加,合金的孔隙率和耐腐蚀性增大,径向收缩率和抗压强度减小;在钼含量10%,烧结温度为1200℃时,多孔Ti-Mo合金的综合性能最好,此时合金的孔隙大小和分布相对较均匀,孔隙率为53%,径向收缩率为9. 8%,抗压强度为111 MPa,耐腐蚀性最强。
Porous Ti-Mo alloy was prepared by powder metallurgy with ammonium bicarbonate as pore-forming agent,and the effects of different Mo content and sintering temperature on phase structure,pore morphology,porosity,compressive strength and corrosion resistance of the alloy were studied. The results show that the porous Ti-Mo alloy has α+β dual-phase structure,the pore size is between 25 μm and 380 μm,and the average pore size is 66 μm. With the increase of Mo content,the porosity and corrosion resistance of the alloy increase,and the radial shrinkage and compressive strength decrease. When the content of Mo is 10% and the sintering temperature is 1200 ℃,the comprehensive properties of the porous Ti-Mo alloy are the best,the pore size and distribution of the alloy are relatively uniform,the porosity is 53%,the radial shrinkage is 9. 8%,the compressive strength is 111 MPa,and the corrosion resistance is the strongest.
作者
张美丽
潘旗
杨涛
乔成芳
刘彦峰
李春
ZHANG Mei-li;PAN Qi;YANG Tao;QIAO Cheng-fang;LIU Yan-feng;LI Chun(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo University, Shangluo 726000,China;School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China;School of Materials and Chemical Engineering, Xi’an Technological University,Xi’an 710021,China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2019年第10期58-64,共7页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金项目(21703135)
国家大学生创新创业训练计划项目(201811396008)
商洛学院科研项目(18SKY010)
关键词
多孔Ti-Mo合金
相结构
孔隙形貌
抗压强度
耐腐蚀性
porous Ti-Mo alloy
phase structure
pore morphology
compressive strength
corrosion resistance
