A Study on Galvanic Corrosion Simulation Method for Predicting Corrosion Lifetime in Dissimilar Materials Joints of Automotive Parts

摘要

Increasing demand of lightweight materials in automotive parts has led to galvanic corrosion due tothe potential difference between the dissimilar materials.A purpose of this study is to develop asimulation tool that can predict a corrosion lifetime in the advanced stage without evaluating aproving ground test.Optimized selection of materials, coating specifications, and fastening surfaceshape is an important on anticorrosive performance between different materials.Thus, an optimalsolution that minimizes galvanic corrosion by using simulation has been derived. The tooldevelopment process for predicting galvanic corrosion is as follows; The corrosion environmentwhich was similar to proving ground test was set.And then all lightweight components wereanalyzed for getteing a corrosion properties and materials type. All of these analytical data wereentered into the software program. To get a reliable result, a correlation between galvanicsimulation and proving ground test had been validated.