摘要
利用电子探针、MM200磨损试验机和齿环单体磨耗试验机等研究了微量硼对特殊黄铜的组织和耐磨性能的影响。结果表明：微量硼的加入可以提高α相的数量,促使耐磨质点Mn_5Si_3的形成,调整α相及Mn_5Si_3质点的形态、分布和大小。在摩擦磨损过程中这些变化有利于释放裂纹形核和扩展的应力；同时硼的加入可以在磨损区的表层形成致密的氧化物或硼的化合物,减轻粘着磨损,从而提高了材料的耐磨性能。
Effect of small amount of B on the microstructure and wear resistance of special brass was investigated by means of SEM, abrasion machine etc. The addition of small amount of B increased the amount of phase, caused the formation of Mn6Si3 particles, and changed the shape, distribution and size of the α-phase and Mn6Si3 particles. When special brass modified with small amount of B was rubbed, these changes were beneficial to releasing the stress for crack initiation and propagation. Small amount of B caused the formation of dense oxide or compound of B on the surface of abrasion area to abate adherence abrasion, resulting in a significant increase of the wear resistance of the special brass.
出处
《机械工程材料》
CAS
CSCD
北大核心
2006年第6期63-65,共3页
Materials For Mechanical Engineering
关键词
硼
特殊黄铜
耐磨性能
boron
special brass
wear resistance
