DIN EN ISO 12732-2008 金属和合金的腐蚀.使用双环法测量电化学电动势活化(基于Cihal法)

标准号：DIN EN ISO 12732-2008
中文标准名称：金属和合金的腐蚀.使用双环法测量电化学电动势活化(基于Cihal法)
英文标准名称：Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006); German version EN ISO 12732:2008
标准类型：H25
发布日期：2008/7/1 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：H25
国际标准分类号：77.060
引用标准：ISO 8044-1999;ISO 643-2003
适用范围：This International Standard specifies the method for measuring the degree of sensitization (DOS) in stainlesssteel and nickel-based alloys using the Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR)test (based on (~ihal's method).The method may be used for the quantitative assessment of deleterious thermal effects resulting in theformation of alloy-element-depleted zones at grain boundaries or in the matrix. However, attention should bepaid when testing heat-affected weld zones, due to possible non-uniform distribution of sensitized zones alongthe fusion lines.The results of the test can be used as an index to identify the potential susceptibility of stainless steel andnickel-based alloys to intergranular corrosion, pitting corrosion, and intergranular-stress corrosion cracking,but prediction of these corrosion modes depends on complementary specific testing.This International Standard describes the general methodology and, in Annex C, gives examples of suitabletest exposure conditions for specific alloys.