Synthesis and Tribological Behaviors of Ti3SiC2 Material Prepared by Vacuum Sintering Technique
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第3期
论文作者：史晓亮 ZHAI Wenzheng PENG Meichao ZHU Zhiwei WANG Mang XU Zengshi YAO Jie SONG Siyuan Abid Qamar ud Din
文章页码：417 - 424
摘 要：The bulk Ti3SiC2 specimens with less than 1 wt% TiC impurity were prepared by vacuum sintering technique, and the average grain size was about 5-6 μm in the elongated direction. When the sintering temperature, soaking time and heating rate were 1 400 ℃, 1 h and 10 ℃·min-1 , respectively, the highest relative density of Ti3SiC2 specimens could reach 97.8%. Meanwhile, the lowest coefficient of friction （COF） and wear rate （WR） of the Ti3SiC2 samples were 0.55 and 1.37×10-3mm3（Nm）-1 at a sliding speed of 0.35 m/s, load pressure of 10 N and ambient condition, respectively. The COF of the Ti3SiC2 sample reduced with the increasing of the load pressure, while the WRs fluctuated little. The WR increased with the increasing of the sliding speed, and weakly influenced the COF. These changing behaviors could be attributed to the presence and coverage of the amorphous mixture oxide film of Ti, Si, Al, and Fe on the Ti3SiC2 friction surface. The selfantifriction mechanism led to reducing of the COF. The increasing of the WR was attributed to the wearing consumption.
史晓亮1,2，ZHAI Wenzheng1,2，PENG Meichao2，ZHU Zhiwei1，WANG Mang1，XU Zengshi1，YAO Jie1，SONG Siyuan1，Abid Qamar ud Din1
1. School of Mechanical and Electronic Engineering, Wuhan University of Technology2. School of Materials Science and Engineering, Wuhan University of Technology
摘 要：The bulk Ti3SiC2 specimens with less than 1 wt% TiC impurity were prepared by vacuum sintering technique, and the average grain size was about 5-6 μm in the elongated direction. When the sintering temperature, soaking time and heating rate were 1 400 ℃, 1 h and 10 ℃·min-1 , respectively, the highest relative density of Ti3SiC2 specimens could reach 97.8%. Meanwhile, the lowest coefficient of friction （COF） and wear rate （WR） of the Ti3SiC2 samples were 0.55 and 1.37×10-3mm3（Nm）-1 at a sliding speed of 0.35 m/s, load pressure of 10 N and ambient condition, respectively. The COF of the Ti3SiC2 sample reduced with the increasing of the load pressure, while the WRs fluctuated little. The WR increased with the increasing of the sliding speed, and weakly influenced the COF. These changing behaviors could be attributed to the presence and coverage of the amorphous mixture oxide film of Ti, Si, Al, and Fe on the Ti3SiC2 friction surface. The selfantifriction mechanism led to reducing of the COF. The increasing of the WR was attributed to the wearing consumption.
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