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논문 기본 정보

자료유형
학술저널
저자정보
Sungmo Moon (Korea Institute of Materials Science) Juseok Kim (Korea Institute of Materials Science)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제54권 제4호
발행연도
2021.8
수록면
171 - 177 (7page)

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초록· 키워드

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This paper is concerned with the surface hardness measurement of NiP-coated AA7050 using different loads from 10 to 100 g. The surface hardness was observed to increase from 180 to 600 H<SUB>v</SUB> with increasing NiP layer thickness, depending on the load applied for indentation. When NiP coating thickness is thinner than 2 ㎛, the surface hardness of NiP-coated AA7050 was mainly determined by AA7050 substrate, while it was significantly increased by NiP coating layer when NiP coating thickness is thicker than 2 ㎛. Hardness of AA7050 substrate itself was not dependent on the applied load but the hardness of NiP-coated AA7050 was largely influenced by the load applied for indentation. The largest difference of hardness between 10 g and 100g of applied loads, was obtained at the NiP thickness of about 8 ㎛ above which the measured hardness at 10 g reached a maximum value of about 600 H<SUB>v</SUB>. It was also observed that indentation-induced plastic deformation next to the indented zone occurs when NiP layer is 5.64 times thicker than the depth of impression formed by indentation.

목차

Abstract
1. Introduction
2. Experimental
3. Results and discussion
4. Conclusions
References

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