Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
Mg alloys are increasingly being used in the field of transportation equipment, such as automobiles and aircraft, where energy saving is being promoted. However, the problem with Mg alloys is that they have lower corrosion and wear resistance than steel materials. Therefore, a lot of research on alloy development and surface modification has been attempted. In this study, we attempted to modify the surface of magnesium alloy by using shot peening. The processing machine was a centrifugal type, and the projectile was made of cast steel with an average diameter of 1 mm. The shot speed was 60m/s and the peening time was 20s. The ceramic particles are alumina and zirconia, with a particle size of 0.1 to 0.2 mm. The resin is a sheet of polyimide, with a thickness of 0.025 to 0.05 mm. Corrosion tests were conducted by immersion in sodium chloride solution. The bonded dissimilar metal foils were tightly bonded to the base material. No voids or cracks were observed at the bonding interface. As a result of bonding resin sheets containing ceramic particles, the corrosion and wear resistance of the base material was improved.
