(山东科技大学 机电学院， 泰安 271019)
摘 要: 用压缩氩弧等离子束快速扫描化学镀Ni-P合金镀层。组织、成分、结构和性能研究结果表明， Ni-P合金重熔层大部分为胞状枝晶组织，由Ni基固溶体、α相(铁素体)和Ni3P相组成；次层为淬火马氏体组织；基体与熔凝层之间存在梯度扩散层。
关键字: 化学镀； 压缩氩弧； 等离子束； NiP合金
beam scanning on microstructure
and composition of electroless Ni-P alloy layer
（Electromechanical College, University of Science and Technology Shandong,
Tai′an 271019, P.R.China）
Abstract:Electroless Ni-P alloy layer is scanned rapidly by compression argon arc plasma beam. The microstructructure, composition and microhardness of Ni-P alloy layer show that Ni-P alloy layer becomes cellular dendrite which is mainly composed of γ-(Ni, Fe), α-Fe and Ni3P phase. The sublevel is marstenite quenching structure. A gradient diffusion layer exists between the layer and the matrix.
Key words: electroless plating； compression argon arc； plasma beam； Ni-P alloy
