锌的加速腐蚀与大气暴露腐蚀的相关性研究  

INVESTIGATION ON INTERRELATION OF ACCELERATED CORROSION TESTING AND ATMOSPHERIC EXPOSURE OF ZINC

作　　者：王振尧[1] 于国才[1] 郑逸苹[1] 贾斌平[2] 

机构地区：[1]中国科学院金属腐蚀与防护研究所,沈阳110015 [2]沈阳工业学院专科学校化工系,沈阳110042

出　　处：《中国腐蚀与防护学报》1999年第4期239-244,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金

摘　　要：通过间歇式盐水喷雾试验和极化曲线测定 ,对比研究了NaHSO3、　NaCl和NaHSO3+Na Cl三种介质对锌腐蚀的影响 ,并对腐蚀产物进行了XRD分析。实验结果表明 ,以 1 0 - 1mol/LNaHSO3+ 1 0 - 2 mol/LNaCl为加速剂 ,采用间歇式喷雾试验 ,可模拟锌在沈阳污染大气中的腐蚀过程 ,腐蚀规律可用ΔW =A +Bt公式描述。By means of accelerated corrosion tests and electrochemical measurements, the influence of NaHSO 3, NaCl or NaHSO 3 + NaCl on corrosion behavior of zinc was studied. Its corrosion products were analysed by XRD, and corrosion mechanism of zinc with emphasis on the mixed medium (NaHSO 3 + NaCl) was discussed. The corrosion process of zinc in Shenyang atmosphere could be simulated by intermittent fogging spraying testing with 10 -1 mol/L NaHSO 3 + 10 -2 mol/L NaCl. The relationship between weight loss of zinc and test duration could be described by a formula Δ w=A+Bt.

关 键 词：锌 大气腐蚀 加速腐蚀试验 

分 类 号：TG172.3[金属学及工艺—金属表面处理] TG146.13[金属学及工艺—金属学]