摘要
采用激光熔覆技术在QA l9-4铝青铜基体上制备N i基合金熔覆层。通过对激光熔覆层微观组织的分析和显微硬度、滑动摩擦磨损等性能的研究结果表明:熔覆层组织均匀致密;平均硬度为HV571.4,大约是QA l9-4铝青铜基体硬度的3倍;在干摩擦条件下,经过激光熔覆技术改性后的试样磨损体积仅为QA l9-4铝青铜的1/3,表现出比QA l9-4铝青铜更好的耐磨性能。
Ni alloy coatings were fabricated on aluminum bronze substrate by laser cladding.The microstructure,micro-hardness,and wear resistance of the coatings are tested and analyzed.The results show that the structure of laser coatings is uniform and compact;and the average hardness of the laser coatings is about HV570,which is about three times higher than that of QAl9-4 aluminum bronze(about HV85).Under dry condition,the cladding of QAl9-4 material has superior wear resistance property,which the wear volume is o...
出处
《润滑与密封》
CAS
CSCD
北大核心
2008年第5期19-21,76,共4页
Lubrication Engineering
基金
兰州理工大学博士基金项目(SB01200608)
关键词
激光熔覆
Ni65合金
摩擦磨损
铝青铜
laser cladding
Ni65 alloy
tribological property
aluminum bronze
