A test to evaluate crevice corrosion in joints of mechanical components sealed with composite structure gaskets in corrosive environments is presented. The crevice corrosion produced in joints comprising the cylinder head, gasket and mono-block was aimed as a study case to illustrate the test. It is based on polarization resistance and potentiodynamic polarization measurements obtaining localized and measurable crevice corrosion on small specimens in a short time. Corrosion rates, crevices volumes and potentiodynamic behavior of assembly specimens made of three different aluminum alloys extracted from actual cylinder heads and mono-blocks, and sections of cylinder head gasket were obtained and reported.

提出了一种在腐蚀性环境中评估用复合结构垫片密封的机械部件的接头中的缝隙腐蚀的测试。旨在研究包括汽缸盖，垫圈和整体式接头在内的缝隙腐蚀的案例。它基于极化电阻和电位动力学极化测量结果，可在短时间内在小样本上获得局部且可测量的缝隙腐蚀。获得并报道了从实际汽缸盖和整体中提取的三种不同铝合金制成的组装样品的腐蚀速率，缝隙体积和电位动力学行为，并进行了报道。