纳米SiC/SiO_2复合体系的高温减摩抗磨性能研究

稀有金属材料与工程, 2009, 38(z2): 1018-1021.

纳米SiC/SiO_2复合体系的高温减摩抗磨性能研究

乔玉林 ^1, , 孟令东 ^2, , 孙晓峰 ^3, , 臧艳 ^4,

1.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

2.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

3.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

4.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

基金项目: 国家自然科学基金(50775221) 北京市自然科学基金(3083028)

关键词：纳米SiO_2 , 添加剂 , 摩擦性能 , 高温

Tribological Behaviors of Nano-SiC/SiO_2 Composites at Elevated Temperatures

Qiao Yulin ^1, , Meng Lingdong ^2, , Sun Xiaofeng ^3, , Zang Yan ^4,

1.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

2.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

3.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

4.装甲兵工程学院,装备再制造国防科技重点实验室,北京,100072

Keywords： nanoscale SiO_2 , lubrication additives , high temperature , tribological properties

用SRV摩擦磨损试验机考察了纳米SiC/SiO_2复合体系的高温抗磨减摩性能.结果表明,在连续加载高温试验中,SiC/SiO_2复合体系在较低负荷下摩擦系数改善不明显,但当SiC/SiO_2之比为0.5时能明显改善基础油在高温高负荷条件下的减摩性能.在50 N恒定载荷,温度为200和400 ℃时,SiC/SiO_2复合体系对基础油的高温减摩抗磨性能都有不同程度的提高,其中当SiC/SiO_2之比为0.1时最为明显,其抗磨性能分别提高了90%和76%.

Tribological behaviors of nano-SiC/SiO_2 composites at elevated temperature were examined using the SRV multifunctional test system. Results show that during the continuous loading test at high temperature, the nano-SiC/SiO_2 composites present a slight melioration of the friction coefficient compared with the base oil at relatively low loads. However, the composite with SiC/SiO_2 component ratio of 0.5 presents excellent friction-reducing properties at high temperature and high load. The nano-SiC/SiO_2 composites present the excellent antiwear properties when the load is 50 N and the temperatures are 200 ℃ and 400 ℃. When the composite with nano-SiC/SiO_2 component ratio of 0.1, the antiwear properties were respectively increased by 90% and 76% at 200 ℃ and 400 ℃, respectively.

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