摘要
目的研究几种典型金属材料在西沙海洋飞溅区的腐蚀行为规律。方法通过外场暴露试验,分析3种钢、1种铜和3种铝合金材料暴露0.5,1,2 a后的腐蚀形貌与动力学规律。结果 3种钢的腐蚀质量损失与点蚀均较为严重,T2整个表面均匀减薄的同时,会产生大量微小的腐蚀坑,3种铝合金发生以点蚀为主的局部腐蚀,伴随有晶间腐蚀、选择性腐蚀等。结论试验条件下,3种钢中Q235耐蚀性最差,T2整体耐蚀性较好,3种铝合金中5083耐点蚀性能最差,5052略优于6063。
Objective To investigate the corrosion behavior and rules of typical metal materials in Xisha marine splash zone. Methods Field exposure test was carried out on 3 kinds of steels, 1 kind of copper and 3 kinds of aluminium alloy materials for 0.5 a, 1 a and 2 a to analyze their corrosion morphology and kinetics rule. Results The corrosion weight loss and pitting phenomenon for 3 kinds of steels were severe; tiny corrosion pits were formed on entire surface of T2 during its evenly thinning process; localized corrosion which was mainly composed of pits occurred on three kinds of aluminium alloy, accompanied by intergranular corrosion, selective corrosion, et al. Conclusion Under the test conditions, the corro- sion resistance of Q235 is the worst among 3 kinds of steels; T2 has a good overall corrosion resistance; pitting resistance of 5083 is the worst, while 5052 is slightly better than 6063.
作者
丁康康
郭为民
张彭辉
范林
逄昆
孙明先
DING Kang-kang GUO Wei-min ZHANG Peng-hui FAN Lin PANG Kun SUN Ming-xian(State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266101, China)
出处
《装备环境工程》
CAS
2017年第2期51-57,共7页
Equipment Environmental Engineering
关键词
西沙
飞溅区
腐蚀
暴露试验
Xisha areas
splash zone
corrosion
exposure test
