30CrMnSiA高强钢在工业和海洋大气环境中的腐蚀行为研究  

Corrosion Behaviours of 30CrMnSiA High-strength Steel in Industrial and Marine Atmosphere Environments

作　　者：张世艳[1] 罗丹[1] 杨瑛[2] 胥泽奇[1] 王玲[1] 杨小奎[1] 

机构地区：[1]西南技术工程研究所 [2]中国人民解放军95607部队

出　　处：《装备环境工程》2017年第5期25-30,共6页Equipment Environmental Engineering

摘　　要：目的为30CrMnSiA高强钢的大气腐蚀防护设计、应用范围扩展和开发新钢种提供有益的借鉴和参考。方法采用腐蚀质量损失、XRD和SEM研究了30CrMnSiA高强钢在工业和海洋大气环境暴露60个月的大气腐蚀行为。结果 30CrMnSiA高强钢在工业和海洋大气环境中腐蚀质量损失随暴露时间变化的双对数函数分别是lgΔw=2.245+0.387lg t和lgΔw=2.822+0.637lg t。纤铁矿和针铁矿是两种大气环境中形成的腐蚀锈层的主要成分,除了纤铁矿和针铁矿外,在海洋大气环境形成的锈层中还发现了四方纤铁矿。随着暴露时间的延长,在海洋大气环境中形成的锈层呈现逐渐剥落的趋势。结论 30CrMnSiA高强钢在海洋大气环境中表现出较高的腐蚀敏感性,在工业大气环境中表现出较低的腐蚀敏感性。Objective To provide useful references for the design of corrosion protection for 30CrMnSiA high-strength steel, the expansion of its applications and development of new types of high-strength steel. Methods Atmospheric corrosion behaviours of 30CrMnSiA high-strength steel exposed in industrial and marine atmosphere environments for 60 months were investigated in virtue of the corrosion mass loss, X-ray diffractmeter （XRD） and scanning electron microscope （SEM）. Results The relationship between mass loss and exposure time obeyed well the following power function： lg Δw=2.245＋0.3871g t and lg Δ w =2.822＋0.6371g t. Lepidocrocite and goethite were found as the major constituents of the rust layer formed in two types of atmosphere environments, and akaganeite was also detected in the marine atmosphere environment. The rust layer exhibited the tendency of flaking away from the substrate in marine atmosphere environment with the increase of exposing. Conclusion 30CrMnSiA high-strength steel exhibits high corrosion susceptibility and low corrosion susceptibility in marine atmosphere environment and industrial atmosphere environment, respectively.

关 键 词：30CrMnSiA高强钢 大气腐蚀 锈层 腐蚀质量损失 

分 类 号：TJ07[兵器科学与技术—兵器发射理论与技术] TG172[金属学及工艺—金属表面处理]