载波处理对纯镁耐蚀性能的影响  

EFFECT OF ALTERNATING CURRENT PASSIVATION ON CORROSION RESISTANCE OF PURE MAGNESIUM

作　　者：刘晓兰[1] 徐雅欣 张涛 邵亚薇 孟国哲 王福会[1,2] 

机构地区：[1]哈尔滨工程大学,材料科学与化学工程学院腐蚀与防护实验室,哈尔滨150001 [2]中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳110016

出　　处：《腐蚀科学与防护技术》2009年第2期188-190,共3页Corrosion Science and Protection Technology

基　　金：国家自然科学基金项目(No.50601007)

摘　　要：采用载波处理方法,用0.25mol/LNa2SO4+0.1mol/LNaOH作为载波处理溶液,对纯镁试样进行载波处理,通过正交试验确定载波处理的最佳工艺参数;用扫描电子显微镜(SEM)观察载波处理后试样的表面形貌;用First Ten Angstroms(FTA)仪器测量蒸馏水纯镁的接触角并计算出表面能;用电化学方法研究了在0.05mol/LNaCl+0.01mol/LNaOH溶液中载波处理对纯镁耐蚀性能的影响.结果表明:载波处理后,纯镁表面生成了一层非常致密而细小的氧化膜,使表面更稳定,提高了纯镁的耐蚀性能.Pure magnesium was treated by A. C. treatment technique in 0. 25 mol/L Na2SO4 ＋0. 1 mol/L NaOH solution. The surface morphology was observed by scanning electron microscopy（SEM）. The con- tact angle of the treated surface of pure Mg was measured by the First Ten Angstroms （FTA） instrument and then its surface free energy can be calculated. The effect of alternating current （ A. C. ） treatment on the corrosion resistance of the pure magnesium was studied through electrochemical methods in 0.05 mol/ L NaCl ＋ 0. 01 mol/L NaOH solution. The experimental results showed that a uniform and perfect oxide film was formed after A. C. treatment, which improved the stability of the surface. The corrosion resistance of the pure magnesium was improved greatly after A. C. treatment.

关 键 词：纯镁 载波钝化 耐蚀性能 

分 类 号：TG172.6[金属学及工艺—金属表面处理]