摘要
对添加稀土铈和镁的热浸镀铝层的耐蚀性进行了研究,给出了镀层在各种腐蚀介质中的腐蚀试验结果,并对镀层进行了形貌观察(SEM)、能谱分析(EDS)和衍射分析(XRD),揭示了各种情况的原因。结果表明:加入0.5%稀土铈可以提高镀层在强酸水溶液和盐水及自来水中的耐蚀性,0.5%稀土铈与1.0%镁配合更能提高镀层在强酸水溶液和盐水及自来水中的耐蚀性;添加稀土铈和镁对镀层在强碱溶液中的耐蚀性没有显著影响。
The corrosion resistance of hot-dip aluminizing coating doped with cerium and magnesium was evaluated by conducting corrosion tests in various fluids. The microstructure , elemental composition and phase composition of the corroded aluminizing coating were analyzed using a scanning electron microscope, an energy dispersive spectrometer, and an X-ray diffractometer. Results showed that adding 0. 5 % cerium helped to improve the corrosion resistance of the aluminizing coatingin strong aqueous acids, saline water, and tap water. The additionof 0.5% cerium and 1.0% Magnesium further contributed to improve the corrosion resistance of the aluminizing coating in diifferent fluids. However, the addition of cerium and magnesium had no significant effect on the corrosion resistance of the alumi-nizing coating in strong alkaline solution.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第11期14-15,37,共3页
Materials Protection
关键词
热浸镀铝
稀土铈
镁
耐蚀性
hot-dip aluminizing
rare earth Ce
magnesium
corrosion resistance
