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在硅酸盐碱性电解液中加入稀土元素Ce的络合物,采用恒压微弧氧化技术在Zr-4合金表面制备陶瓷膜。分析了稀土元素Ce在陶瓷膜中的存在形式,以及对陶瓷膜的厚度、相组成、耐磨损性能和耐腐蚀性能的影响。稀土元素Ce能够进入陶瓷膜并在陶瓷膜中以固溶形式存在,影响陶瓷膜中t-ZrO2和m-ZrO2的相对比例,使孔洞及粒状物明显减少,陶瓷膜表面光滑致密,陶瓷膜厚度增加,耐磨、耐腐蚀性能提高。电解液中Ce的络合物加入量在0.001～0.003mol/L时效果最为明显。
The rare earth element Ce complex was added to the silicate alkaline electrolyte and the ceramic membrane was prepared on the surface of Zr-4 alloy by the constant pressure micro-arc oxidation technique. The existence of rare earth element Ce in the ceramic membrane and the influence on the thickness, phase composition, wear resistance and corrosion resistance of the ceramic membrane were analyzed. The rare earth element Ce can enter the ceramic membrane and exists in the form of solid solution in the ceramic membrane, affecting the relative proportions of t-ZrO2 and m-ZrO2 in the ceramic membrane, significantly reducing the pores and granular matters, the surface of the ceramic membrane is smooth and dense, the thickness of the ceramic membrane Increase, wear, corrosion resistance increased. Electrolyte Ce complexes added in the amount of 0.001 ~ 0.003mol / L when the effect is most obvious.