摘要
采用IPG YLS-6000型大功率光纤激光器在42CrMo合金表面制备Ni包WC涂层,研究激光功率对涂层组织及性能的影响。研究表明:随着激光功率的增大,涂层组织呈粗化趋势;且在激光功率的增大过程中,涂层中WC颗粒逐渐分解为Fe-C化合物,硬度逐渐减小;当激光功率为1 800W时,显微硬度达到最大值1 050HV;Ni包WC涂层显著提高了基材的耐磨性,在同等磨损条件下,涂层的磨损量仅为基体试件的1/5,但激光功率对涂层磨损量的影响不大。
Ni coated WC is cladded on 42 CrMo alloy surface by using IPG YLS-6000 high power fiber laser,and the effects of laser power on microstructure and properties of Ni coated WC coating are studied.It is found that with the increase of laser power,the microstructure shows a trend of roughening,and the coating hardness decreases because of WC particles gradually decompostion into Fe-C compounds.Also,when the laser power is 1 800 W,micro hardness is 1 050 HV.Furthermore,the wear resistance of specimens is significantly improved by laser cladding.Under the same wear condition,the abrasion loss of coating is only about 1/5of the substrate.And the influence of laser power on the coating wear is not obvious.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2016年第6期890-894,共5页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家自然科学基金(51475238)资助项目
关键词
激光功率
Ni包WC
组织
显微硬度
耐磨性
laser power
Ni coated WC
structure
micro hardness
wear resistance
