标准摘要
[中文适用范围]： 本国际标准描述了在恒电位控制下测定不锈钢临界缝隙温度 (CCT) 的程序。该测试的主要优势是能够在单次测试程序中快速测量 CCT。按本国际标准测定的 CCT 可用作性能相对指数，例如比较不同等级不锈钢的相对性能。本国际标准描述的测试并非旨在确定服役过程中发生缝隙腐蚀的温度。该方法不适用于按 ISO 17864 在相同测试溶液和相同电位下测得的临界点蚀温度 (CPT) 值低于 20 °C 的材料。 [外文原描述]： ISO 18089:2015 describes the procedure for determining the critical crevice temperature (CCT) for stainless steels under potentiostatic control. The principal advantage of the test is the rapidity with which the CCT can be measured in a single test procedure. The CCT, as determined in this International Standard, can be used as a relative index of performance, for example, to compare the relative performance of different grades of stainless steel. The test described in this International Standard is not intended to determine the temperature at which crevice corrosion will occur in service. This method is not intended for materials with critical pitting temperature (CPT) values below 20 °C measured in accordance with ISO 17864, when measured in the same test solution and at the same potential
英文名称Corrosion of metals and alloys — Determination of the critical crevice temperature (CCT) for stainless steels under potentiostatic control