標(biāo)準(zhǔn)號：ISO 12732-2006
中文標(biāo)準(zhǔn)名稱：金屬和合金的腐蝕.利用雙環(huán)法進(jìn)行電化學(xué)電動(dòng)勢活化測量
英文標(biāo)準(zhǔn)名稱：Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method)
標(biāo)準(zhǔn)類型：H25
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：H25
國際標(biāo)準(zhǔn)分類號：77.060
引用標(biāo)準(zhǔn)：ISO 8044-1999;ISO 643-2003
適用范圍：This International Standard specifies the method for measuring the degree of sensitization (DOS) in stainless steel and nickel-based alloys using the Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR) test (based on Cihal's method).The method may be used for the quantitative assessment of deleterious thermal effects resulting in the formation of alloy-element-depleted zones at grain boundaries or in the matrix. However, attention should be paid when testing heat-affected weld zones, due to possible non-uniform distribution of sensitized zones along the fusion lines.The results of the test can be used as an index to identify the potential susceptibility of stainless steel and nickel-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 suitable test exposure conditions for specific alloys.