摘要
用原子力/摩擦力显微镜对碳化硼样品进行了表面形貌的微观分析。在载荷为1～6μN下,研究了Si_3N_4探针扫描碳化硼表面时摩擦力的分布。结果表明,摩擦力的变化与扫描处的试样表面形貌有关,表面形貌变化斜率越大处,摩擦力增加得越多。由于试样较平整,摩擦力的分布也是比较均匀的。碳化硼材料纳米摩擦因数随载荷的增加而显著增加。
The topographical characteristics of the boron carbide sample surfaces were investigated with atomic force microscope/friction force microscope (AFM/FFM). The samples used are of good consolidation and the surfaces of the polished samples are even. The friction force distributions of Si_3N_4 tip scanning over the boron carbide surfaces were investigated at load 1 μN to 6 μN, 1 μN a step. The results show that friction force change with the surge of surface topography. The steeper slope of surface topography links with the higher friction force. Friction forces are almost uniform at cartain normal load since the surface are even. The nano tribological friction coefficient of boron carbide increases with the normal load rising.
出处
《粉末冶金材料科学与工程》
EI
2002年第4期259-264,共6页
Materials Science and Engineering of Powder Metallurgy
基金
国家"九五"科技攻关项目
