摘要
采用高速电弧喷涂工艺在20钢样品表面制备了Ni9Al涂层,以其作为超音速火焰喷涂WC-Co涂层的中间层。采用光学显微镜分析、场发射扫描电镜分析以及性能测试方法,研究Ni9Al中间层对涂WC-Co涂层组织结构及性能的影响。结果表明:Ni9Al中间层能提高WC-Co涂层与基体的结合强度;Ni9Al/WC-Co复合涂层试样的热震试验结果表明,Ni9Al中间层显著改善了涂层抗热震性能。
Ni9A1 coating was deposited on AISI 1020 steel substrates by high velocity arc spraying. Ni9A1 coating was used as interlayer between WC-Co coatings deposited by high-velocity oxygen fuel （HVOF） spraying process and AISI 1020 steel substrates. The effects of arc-sprayed Ni9A1 interlayer on the microstructure and properties of the coating were studied by OM, field emission scanning electron microscopy （FE-SEM） and performance testing methods. The results show that the bond strength to the substrate and cohesive strength of the coating with Ni9AI interlayer are significantly improved, compared with those of WC-Co coating. The thermal shock resistance of Ni9AI/WC-Co coating is improved,
出处
《热加工工艺》
CSCD
北大核心
2013年第6期128-130,共3页
Hot Working Technology
基金
浙江省科技厅一般工业基金资助项目(2009C31129)
