不锈钢表面阴极等离子体液相沉积氧化铝层  

Preparation of alumina coating on stainless steel surface by cathodic plasma liquid deposition

作　　者：王云龙[1] 姜兆华[1] 姚忠平[1] 

机构地区：[1]哈尔滨工业大学应用化学系,哈尔滨150001

出　　处：《材料研究学报》2007年第4期395-398,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金50171026资助项目.~~

摘　　要：使用阴极等离子体液相沉积技术在不锈钢表面生成了厚度达40μm的氧化铝膜层,研究了电流密度对膜层的组成和结构影响,以及膜层的生长规律和形成过程.膜层由α-Al_2O_3和γ-Al_2O_3组成,随着电流密度的增大,α-Al_2O_3的含量逐渐增大,电流密度为8A/dm^2时达到86%.膜层的表面粗糙、多孔,随着电流密度的增大,表面颗粒状明显增多,微孔数减少;基体中的Fe没有进入膜层,从膜层内向外Al和O的含量逐渐下降.Al2O3 coating with a thickness of 40 μm was produced on a stainless steel substrate by cathodic plasma liquid deposition （CPLD）. The influence of current density on the phase compositions and microstructures of the coating was investigated, and the growth mechanism of the coating was analyzed. The coating was composed of α-Al2O3 and γ-Al2O3. The content ofα-Al2O3 increased with increasing current density, which amounts to 86% for current density 8 A/dm^2. The coating surface was coarse and porous, and more big grains and fewer pores present on the surface with increasing current density. Fe in the substrate do not come into coatings, and Al and O decrease from the substrate to the coating surface.

关 键 词：材料表面与界面 不锈钢 阴极等离子体液相沉积 氧化铝层 

分 类 号：TB321[一般工业技术—材料科学与工程]