C19400合金半蚀刻后表面粗糙度的影响因素

Influence Factors on Surface Roughness of C19400 Alloy after Semi-Etching

C19400合金半蚀刻后表面粗糙度严重影响后续的成品率及使用。在工厂条件下对四种C19400合金开展半蚀刻试验,分析了第二相尺寸与数量、材料局部取向差(KAM)等因素对材料半蚀刻后表面粗糙度的影响。结果表明:当第二相粒子尺寸大于1μm时,材料半蚀刻后表面粗糙度会受到显著影响,将C19400合金中大尺寸第二相粒子数量密度控制在一定范围内,保证C19400合金材料KAM值大于2,将更有利于得到半蚀刻后相对平滑的材料表面。

The surface roughness of C19400 alloy after semi-etching seriously affects the yield and subsequent use of related products.The semi-etching experiments of four kinds of C19400 alloys were carried out under factory conditions.The effects of the size and quantity of the second phase and the kernel average misorientation(KAM)of the material on the surface roughness of the material after semi-etching were analyzed.The results show that when the size of the second phase particles was greater than 1μm,it significantly affected the surface roughness of the material after semi-etching.The number density of large-sized second phase particles in C19400 alloy was controlled within a certain range to ensure that the KAM value of C19400 alloy material was greater than 2,which was more conducive to obtaining a relatively smooth material surface after semietching.