摘要
采用渗Ti法制备出相对密度较高的TiB 2-TiC复合材料,并讨论了熔渗温度对TiB 2-TiC复合材料物相、显微组织、致密度和维氏硬度的影响.结果表明:TiB 2-TiC复合材料的相组成为TiB 2、TiC、Ti 3B 4、TiB、Ti 3AlC和TiO相.随着熔渗温度的增加,复合材料中TiB 2含量降低,反应生成Ti 3B 4和TiB相区域的尺寸和数量有所增加;复合材料的维氏硬度整体呈降低趋势.当熔渗温度为 1 650 ℃时,TiB 2-TiC复合材料性能最佳,对应复合材料的维氏硬度、开口气孔率、体积密度和相对密度分别为21 GPa、0.34%、 4.46 g/cm^3 和96.2%.
Dense TiB 2-TiC composite was fabricated by titanium infiltration. The effect of infiltration temperature on the phase composition, microstructure, density and Vickers-hardness was discussed. The results show that the composite consists of TiB 2, TiC, Ti 3B 4, TiB, Ti 3AlC and TiO phases. With the increase of infiltration temperature, the content of TiB 2 phases decreased, while the amount and zone size of the produced Ti 3B 4 and TiB phases increased. The Vickers hardness of the TiB 2-TiC composites decreased with the increase of infiltration temperatures, with optimum temperature of 1 650 ℃. The optimum Vickers hardness, open porosity, bulk density and relative density of the TiB 2-TiC composite are 21 GPa, 0.34%, 4.46 g/cm^3 and 96.2%, respectively.
作者
张禹
陈铭延
陈宇凡
张翠萍
Zhang Yu;Chen Mingyan;Chen Yufan;Zhang Cuiping(Key Laboratory for Anisotropy and Texture of Materials Ministry of Education, Northeastern University,Shenyang, 110819, China;School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China)
出处
《材料与冶金学报》
CAS
北大核心
2019年第3期196-201,共6页
Journal of Materials and Metallurgy
基金
国家级大学生创新创业训练计划资助项目(201710145126)
国家自然科学基金资助(51602041,51772048)
中央高校基本科研业务费基金资助(N170204014)
国家重点研发计划项目资助(2017YFB0310300)
装备预先研究项目(41422010903,41422010905)
辽宁省博士科研启动基金资助(201601021)
