金刚石与磨料磨具工程2011，Vol.31Issue(1)：39-42,4.DOI:10.3969/j.issn.1006-852X.2011.01.010
石墨自润滑钎焊cBN 砂轮节块界面微观结构
Interfacial microstructure of graphite self-lubrication brazed cBN wheel segments
摘要
Abstract
Brazed cBN wheel segments were fabricated based on graphite self-lubricating effect. Bending strength of the wheel segments were measured by three-point bending experiments. Bonding interface and fracture morphology of the wheel segments were detected using scanning electron microscope (SEM) and energy dispersion spectrometer (EDS). The results show that the bending strength of the wheel segments with mass fraction 5 ％ graphite reaches 116 MPa. The metallurgical bonding at the interfacial zone between cBN and Cu-Sn-Ti filler increases the holding strength of filler to the grains. The graphite shows the original lamellar structure, which can potentially form a lubricating film during grinding. Some irregularly holes are formed in the segments, which ensures sufficient storage space for chips during grinding.关键词
石墨/Cu-Sn-Ti合金/cBN磨粒/抗弯强度/界面微结构Key words
graphite/ Cu-Sn-Ti alloy/ cBN grain/ bending strength/ interfacial microstructure分类
矿业与冶金引用本文复制引用
黄加林,傅玉灿,丁文锋,陈珍珍,徐九华,苏宏华..石墨自润滑钎焊cBN 砂轮节块界面微观结构[J].金刚石与磨料磨具工程,2011,31(1):39-42,4.基金项目
国家重点摹础研究发展计划课题(2009CB724403),教育部长江学者与创新团队发展计划项目(IRT0837),国家数控机床重大专项(2009ZX04014-046),教育部新世纪优秀人才资助计划(NCET-07-0435) （2009CB724403）
