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자동차 배기계용 POS AL409L 스테인리스강의 개발과 부품성능평가
김영호(Yeongho Kim),조성준(Seongjun Cho),박찬하(Chanha Park),박종환(Jonghwan Park),장민(Min Jang),박종휘(Jonghwi Park) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Al-coated stainless steel has been developed for the materials of automotive exhaust systems. This new materials, POS AL409L, showed excellent corrosion resistance in the condensed water environment of muffler and also in the deicing salt environments because aluminum can prevent the corrosion of stainless steel by acting as a sacrificial anode. Mechanical strength and ductility are also satisfied with the specification as exhaust materials. The corrosion resistance of automotive exhaust system with POS AL409L was superior to those of STS439 and STS409L. It showed that aluminum coating was not deteriorated in manufacturing process and the lifetime of vehicle exhaust system can be prolonged.