表面技术2011，Vol.40Issue(2)：8-11,4.
铝合金表面无铬磷酸盐稀土转化膜的成膜机理及耐蚀性研究
Study on the Film Forming Mechanism and Corrosion Resistance of Non-chromium Phosphate Rare Earth Conversion Coating on Al Alloy
摘要
Abstract
The electrochemical behavior of film process and the effect of rare earth on a phosphating film's growth process were studied. The phosphating film was formed on 6061 aluminium alloy surface, it was non-chromium phosphate rare earth conv ersion coating. At the same time it's corrosion resistance was explored preliminarily by making use of the polarization curve. The results show that this bonderizing process has mainly four stages: this bonderizing process has mainly the basement corroding scheduled time, crystal first formation scheduled time, basement dissolve again and crystal formation scheduled time, basement dissolve and crystal growth equilibration scheduled time. With the help of rare earth, the corrosion-resistance of the bonderizing film is raised, and phosphating time is shortened, at the same time the reaction ion being in metal outside adsorption is boosted and many active point was formed. This is beneficial to the new crystal's incresament homogeneously. Therefore the bonderizing film surface mass is improved greatly.关键词
铝合金/稀土转化膜/电化学/成膜机理/极化曲线/耐蚀性Key words
aluminium alloy/ rare earth conversion coating/ electrochemistry/ forming film mechanism/ polarization curve/ corrosion resistance分类
矿业与冶金引用本文复制引用
李红玲,付小宁..铝合金表面无铬磷酸盐稀土转化膜的成膜机理及耐蚀性研究[J].表面技术,2011,40(2):8-11,4.基金项目
河南省自然科学研究项目(200510476009) （200510476009）
