球形石墨增强银-石墨复合材料的摩擦学行为（英文）
发布时间：2021-01-18 02:27
采用粉末冶金技术分别制备球形石墨（SG）和鳞片石墨（FG）增强的银-石墨复合材料。并用销-盘式摩擦磨损仪在大气环境和3.0N的载荷下研究石墨形貌对银-石墨复合材料（Ag-SG和Ag-FG）摩擦学行为的影响。结果显示,Ag-FG的最低磨损率为3.5×10-5mm3/（N·m）,而Ag-SG的最低磨损率比Ag-FG低一个数量级,为1.6×10-6mm3/（N·m）。Ag-SG和Ag-FG显著不同的摩擦学行为与亚表面裂纹的形成有关。在摩擦过程中,片状石墨的边缘容易发生应力集中,导致Ag-FG亚表面产生裂纹和严重的剥层磨损。然而,在Ag-SG中,球形石墨能有效抑制裂纹的萌生和扩展,从而使银-石墨复合材料具有优异的耐磨性能。
【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)
【文章页数】：11 页
【文章目录】：
1 Introduction
2 Experimental
2.1 Preparation of Ag-graphite composite
2.2 Tribological tests and characterization
3 Results and discussion
3.1 Characterization of Ag-FG and Ag-SG composites
3.2 Friction and wear properties
3.3 Microstructure of worn surface and wear debris
3.4 Microstructure evolution of sub-surface
3.5 Effect of graphite morphology on wear behavior of Ag-graphite composites
4 Conclusions
本文编号：2984084
【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)
【文章页数】：11 页
【文章目录】：
1 Introduction
2 Experimental
2.1 Preparation of Ag-graphite composite
2.2 Tribological tests and characterization
3 Results and discussion
3.1 Characterization of Ag-FG and Ag-SG composites
3.2 Friction and wear properties
3.3 Microstructure of worn surface and wear debris
3.4 Microstructure evolution of sub-surface
3.5 Effect of graphite morphology on wear behavior of Ag-graphite composites
4 Conclusions
本文编号：2984084
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