Heat resisting property of Al coated steel sheet by sputtering

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• 作者：Seon-hwa Heo^a ; Jae-In Jeong^b ; Ji Hoon Yang^b ; Kyuyong Lee^c ; Yongsug Chung^a ; ^{ychung@kpu.ac.kr}
• 关键词：Al coated steel ; Sputtering ; Heat resistance ; Interfacial structure
• 刊名：Current Applied Physics
• 出版年：2012
• 出版时间：September, 2012
• 年：2012
• 卷：12
• 期：supp_S2
• 页码：S168-S173
• 全文大小：1085 K

文摘

Al coated steel sheets are being used for heat resisting application such as muffler for automobile, fuel tank, microwave oven, and combustion chamber parts. These are commercially produced by hot-dip galvanizing process and their heat resisting properties are depending on their processes. In this study, Al coated steel sheets are fabricated by sputtering process in order to compare their properties with the ones of galvanizing.

Hot-dip Al coated steel sheet (HACSS) showed a typical solidified structure of Al-Si alloy; primary Al dendrite and Al-Si eutectic structure. Intermetallic compounds were found between the coating layer and the steel substrate. On the other hand, sputtered Al coated steel sheet (SACSS) represented a well-mixed structure of Al-Si. No intermetallics were observed. Heat resistance tests were carried out at 450?¡ãC and 500?¡ãC. HACSS was discolored at 450?¡ãC, but SACSS at 500?¡ãC. In this study, heat resistance experimental results are analyzed and discussed based on their microstructures of non-ferrous/ferrous metal hybrid system.