• Proceedings of the Materials Research Society of Korea Conference
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• 2003.11a
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• pp.89-89
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• 2003

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2006.04a
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• pp.62-62
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• 2006

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2002.05a
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• pp.23-23
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• 2002

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2001.11a
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• pp.12-12
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• 2001

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2000.11a
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• pp.52-52
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• 2000

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.1 no.1
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• pp.71-78
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• 2002

Since the early 1980's the use of zinc-aluminum alloy-coated steel sheet(Galvalume) for vehicular corrosion protection has increased drastically. It is consisting of 55%Al-43.4% Zn-1.6%Si. Galvalume has a good corrosion resistance, heat reflectivity and shiny appearance, which has a dendritic structure of alloy layer. It has a good corrosion resistance due to dendritic structure. But, this also has a weak point against moisture during long period of transportation as sheeted and or coiled without any relation of chromating on the surface of steel sheet or not because of high humidity and temperature. Here, We studied the corrosion mechanism by the moisture.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.4 s.181
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• pp.109-115
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• 2006

This paper is designed to estimate friction and powdering characteristic of coating layer on galvannealed sheet steel with different annealing temperature, which is 465, 505, 515 and $540^{\circ}C$, Estimations of powdering and friction were done using a $60^{\circ}$ bending test and one side friction test, respectively. In order to obviously understand the effect of coatings on friction cross-section of coatings before and after friction test was also observed by SEM. The results show that powdering of coatings is increased with increasing of annealing temperature and that friction characteristic greatly depends on powdering which leads to increase of real contact area between tools and coatings.

• Proceedings of the KWS Conference
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• 1994.10a
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• pp.51-55
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• 1994

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 1998.05a
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• pp.78-78
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• 1998

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 1998.05a
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• pp.66-66
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• 1998