| MoS_2和石墨对Ni-Cr基复合材料摩擦学性能的影响 |
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| 引用本文： | 王爱芳,张定军,吴有智,王文珍,贾均红.MoS_2和石墨对Ni-Cr基复合材料摩擦学性能的影响[J].材料研究学报,2010(5). |
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| 作者姓名： | 王爱芳 张定军 吴有智 王文珍 贾均红 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室;中国科学院兰州化学物理研究所固体润滑国家重点实验室; |
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| 基金项目： | 国家自然科学基金50972148; 中国科学院百人计划项目KGCX2-YW-804资助~~ |
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| 摘 要： | 用粉末冶金方法制备Ni-Cr基自润滑复合材料,研究了固体润滑剂MoS_2和石墨对复合材料的机械性能和摩擦学性能的影响。结果表明,随着MoS_2含量的增加,复合材料的显微硬度明显降低;MoS_2添加量从10%(质量分数,下同)增加到15%,复合材料摩擦系数和磨损率的变化并不明显。随着石墨含量的增加,复合材料的显微硬度呈逐渐降低的趋势,在400℃和800℃的摩擦系数呈升高趋势,石墨添加量为10%时室温摩擦系数最小。同时添加5%MoS_2和10%石墨时,复合材料的摩擦系数保持在0.48-0.65,石墨与MoS_2之间存在着协同效应,但是磨损率比添加单一润滑剂时高一个数量级。
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| 关 键 词： | 复合材料 粉末冶金 固体润滑剂 摩擦学性能 |
Effects of Adding MoS_2 and Graphite on Tribological Properties of Ni-Cr Based Self-lubricating Composites |
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| WANG Aifang ZHANG Dingjun WU Youzhi WANG Wenzhen JIA Junhong .State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou .State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou.Effects of Adding MoS_2 and Graphite on Tribological Properties of Ni-Cr Based Self-lubricating Composites[J].Chinese Journal of Materials Research,2010(5). |
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| Authors: | WANG Aifang ZHANG Dingjun WU Youzhi WANG Wenzhen JIA Junhong State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Lanzhou University of Technology Lanzhou State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou |
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| Affiliation: | WANG Aifang~(1,2) ZHANG Dingjun~1 WU Youzhi~1 WANG Wenzhen~2 JIA Junhong~(2**) 1.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050 2.State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000 |
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| Abstract: | The influences of MoS_2 and graphite on the tribological properties of Ni-Cr based self-lubricating composites prepared by powder metallurgy were investigated.The results show that the micro-hardness of composites decreases obviously with the increase of content of MoS_2.While the friction coefficient and wear rate of the composites don't change evidently with increasing the content of MoS_2 from 10%to 15%(mass fraction).The micro-hardness of composites reduces gradually with the rise of graphite amount,the... |
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| Keywords: | composites powder metallurgy solid lubricant tribological properties |
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