纯锌在我国热带海洋大气环境耐蚀寿命预测模型  

Corrosion prediction model of pure zinc in tropical marine atmospheric environment in China

作　　者：范嘉雯 程学群[1,2] 李晓刚[1,2,3] 肖葵[1,2] 董超芳[1,2] 

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083 [2]腐蚀与防护教育部重点实验室,北京100083 [3]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《中国有色金属学报》2016年第4期797-806,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51271023);国家重点基础研究发展计划资助项目(2014CB643300)~~

摘　　要：采用周浸加速腐蚀试验模拟纯锌在热带海洋大气环境的腐蚀行为,通过对比腐蚀形貌、腐蚀产物、腐蚀动力学等定性和定量地评价周浸试验与户外大气暴露腐蚀试验的相关性。结果表明:周浸腐蚀试验后,纯锌的腐蚀形貌、腐蚀产物组成及腐蚀动力学均与实际海洋大气环境暴露结果具有较好的相关性;通过灰色关联分析法分析发现采用2%Na Cl溶液模拟万宁大气、5%Na Cl溶液模拟西沙大气兼具模拟性和加速性;采用周浸加速腐蚀试验方法建立纯锌在万宁、西沙两种海洋大气环境下服役的耐蚀寿命预测模型,分别为Twn=95.23t 1.01、Txs=841.60t 0.16。The corrosion behavior of pure zinc in tropic marine environment was simulated by cyclic immersion test, the correlation between cyclic immersion test and outdoor atmospheric test was evaluated qualitatively and quantitatively by comparing the corrosion morphologies, corrosion products and corrosion kinetics. The results show that the corrosion morphologies, compositions of corrosion products and corrosion kinetics after cyclic immersion test are in good correlation after the real atmospheric test. By Grey correlation method, using 2%Na Cl solution to simulate Wanning atmosphere and using 5%Na Cl solution to simulate Xisha atmosphere meet both simulation and acceleration. The corrosion life-span prediction method of pure zinc in two kinds of marine atmospheric environment is built by cyclic immersion experiments: T_(wn)=95.23t^(1.01), T_(xs)=841.60t^(0.16).

关 键 词：海洋大气腐蚀 室内加速腐蚀 相关性 加速性 耐蚀寿命预测 

分 类 号：TG174.3[金属学及工艺—金属表面处理] TG146.13[金属学及工艺—金属学]