Zhang Rui, Zhang Huiming, Liu Fuyan
School of Mechanical Engineering, Chengdu University, Chengdu 610106, China.
Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu University, Chengdu 610106, China.
Materials (Basel). 2022 Feb 15;15(4):1437. doi: 10.3390/ma15041437.
TiSiC-PbO-Ag composites (TSC-PA) were successfully prepared using the spark plasma sintering (SPS) technique. The ingredient and morphology of the as-synthesized composites were elaborately investigated. The tribological properties of the TSC-PA pin sliding against Inconel 718 alloys disk at room temperature (RT) to 800 °C were examined in air. The wear mechanisms were argued elaborately. The results showed that the TSC-PA was mainly composed of TiSiC, Pb, and Ag. The average friction coefficient of TSC-PA gradually decreased from 0.72 (RT) to 0.3 (800 °C), with the temperature increasing from RT to 800 °C. The wear rate of TSC-PA showed a decreasing trend, with the temperature rising from RT to 800 °C. The wear rate of Inconel 718 exhibited positive wear at RT and negative wear at elevated temperatures. The tribological property of TSC-PA was related to the tribo-chemistry, and the abrasive and adhesive wear.
采用放电等离子烧结（SPS）技术成功制备了TiSiC-PbO-Ag复合材料（TSC-PA）。对合成后的复合材料的成分和形貌进行了详细研究。在空气中考察了TSC-PA销在室温（RT）至800℃下与因科镍合金718圆盘滑动时的摩擦学性能。对磨损机制进行了详细讨论。结果表明，TSC-PA主要由TiSiC、Pb和Ag组成。随着温度从室温升高到800℃，TSC-PA的平均摩擦系数从0.72（室温）逐渐降低到0.3（800℃）。随着温度从室温升高到800℃，TSC-PA的磨损率呈下降趋势。因科镍合金718在室温下表现出正磨损，在高温下表现出负磨损。TSC-PA的摩擦学性能与摩擦化学、磨粒磨损和粘着磨损有关。
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