金属材料自然环境腐蚀的剂量响应方程

Dose-response Functions of Metallic Materials Natural Environment Corrosion

为了更好地预测材料腐蚀速率和评价大气的腐蚀性,材料腐蚀的剂量响应方程得以不断发展。近年来,随着众多全球性室外暴露腐蚀试验的开展(ISO CORRAG、ICP Materials和MICAT等工程)和数据的积累,材料腐蚀的剂量响应方程逐步由幂函数规律、线性规律发展到目前广泛认可的指数函数规律。在关于大气腐蚀性分类的国际标准ISO 9223—2012的修订中,也引入了剂量响应方程。目前,剂量响应方程在揭示腐蚀机理和适用范围上还存在一定的局限性。

In order to predict corrosion rate of materials and evaluate atmospheric corrosivity, there has been ever-increasing development in the area of dose-response functions equations about materials corrosion. In recent years, with the development of many global outdoor exposure corrosion tests （ISO CORRAG, ICP Materials and MICAT, etc.） and data accumulation, dose-response functions about material corrosion gradually develop from power function and linear law to the widely recognized rule of exponential function. Dose-response functions have been used in the revision of the international standard ISO 9223- 2012 on classification of atmospheric corrosion. Still, there are some limitations for dose-response functions to reveal corrosion mechanism, also their scope of application.