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논문 기본 정보

자료유형
학술저널
저자정보
이광호 (대우조선해양) 남기우 (부경대학교)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제19권 제1호
발행연도
2018.2
수록면
75 - 79 (5page)

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Hardness is a characteristic value that indicates resistance to partial deformation or abrasion of the material surface. It is easyto measure, and data can quickly be obtained. It also shows correlation with mechanical properties, such as tensile strength. Al2O3/SiC composite with three concentrations of silicon carbide was sintered, and heat-treated at three differenttemperatures. The Vickers hardness of the as-received specimen and the heat-treatment specimen was analyzed by Weibullstatistics, and its probability distribution characteristics were evaluated. Since an oxide layer was formed on the surface bythe heat-treatment, the hardness of the specimen having high temperature heat-treatment was low. The shape parameter andthe mean Vickers hardness decreased as the heat-treatment temperature increased, and the scale parameters showed smallerthan those of the as-received specimen. The scale parameters of the 1,473 K specimen were larger than those of the as-receivedspecimen, but those of the (1,573 and the 1,673) K specimens were smaller than those of the as-received specimen. The entireshape parameters, except for the 1,673 K specimen of AS15Y3, were smaller than those of the as-received specimen, and thedispersions were large.

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