放热体系对镁合金反应热喷涂陶瓷涂层耐蚀性能影响  

Influence of Exothermic Chemical System on Corrosion Resistance of Thermal Spraying Ceramic Coating on Mg Alloy

作　　者：马壮[1] 周鹏[1] 田琳[1] 董世知[1] 

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《热加工工艺》2012年第14期164-167,共4页Hot Working Technology

摘　　要：采用相同的陶瓷骨料和热喷涂工艺,放热体系分别为Al-CuO和Al-TiO2-B2O3,制备热喷涂陶瓷涂层。通过对涂层表面形貌观察、物相分析、孔隙率、耐酸性（5%醋酸）、耐盐性（3.5%NaCl）测试,比较放热体系对陶瓷涂层性能的影响。实验结果显示院采用Al-CuO为放热体系的陶瓷涂层耐酸性提高23.37倍,耐盐性提高16.33倍,Al-TiO2-B2O3放热体系陶瓷涂层耐酸性提高12.91倍,耐盐性提高7.46倍,Al-CuO放热体系陶瓷涂层耐蚀性优于Al-TiO2-B2O3放热体系陶瓷涂层。The effects of exothermic chemical system on corrosion resistance of ceramic coating prepared by thermal-spraying method with the same aggregates were studied. By comparing morphology, XRD, porosity, acid-resistance （5% acetic acid）, salt-resistance （3.5%NaCl） respectively, the results show that the corrosion-resistance of ceramic coating with A1-CuO exothermic chemical system is improved by 23.37 and 16.33 times, whereas A1-TiO2-B203 exothermic chemical system just 12.91 and 7.46 times. Conclusion can be drawn that ceramic coating with A1-CuO exothemaic chemical system exhibits excellent corrosion-resistance than AI-TiO2-B2O3 with Al-TiO2-B2O3 exothermic chemical system.

关 键 词：放热体系 反应热喷涂 陶瓷涂层 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ174[金属学及工艺—金属学]