碱性介质中304不锈钢交流调制电位着色工艺研究  

Coloring of 304 Stainless Steel in NaOH by Modularized Potential

作　　者：魏军胜[1] 唐子龙[1] 宋诗哲[1] 

机构地区：[1]天津大学材料学院,天津300072

出　　处：《表面技术》2007年第5期43-45,87,共4页Surface Technology

基　　金：国家自然科学基金项目资助(50671072)

摘　　要：为了改善不锈钢着色过程中高温和重离子的环保和耗能问题,室温下,在无Cr的NaOH溶液中304不锈钢交流调制电位法着色处理工艺,该工艺具有经济环保的特点。获得了稳定的金黄色、黄紫色、紫色、蓝紫色和蓝色膜,着色膜具有良好的耐蚀性,耐磨性、机械加工性和抗污性。探讨了工艺参数对着色膜耐蚀性和稳定性的影响。结果表明：着色电压幅值为7.0～8.0V、着色时间为4～7m in时,着色膜稳定性和耐蚀性能最好。An environmentally friendly approach was proposed to color 304 stainless steel in NaOH solution without Cr^3＋ or Cr^6＋ using alternative potentials with the modularized amplitudes and period at room temperature. The coloring technique produces a profile of golden, purple yellow, purple, purple blue and blue. Corrosion resistance of color film was evaluated by multi electrochemical techniques. The result shows that the color film obtained with a potential amplitude of 7.0 ～ 8.0V and an electrolysis time of 4 ～ 7 minutes has best stability and corrosion resistance in 0.5mol/L H2SO4 solution.

关 键 词：电化学着色 不锈钢 电位扫描 化学稳定性 

分 类 号：TG177[金属学及工艺—金属表面处理]