A study on the wear characteristics of ZrO2 monoliths and ZrO2/SiC composites
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초록
We was evaluated the wear characterization of monolithic ZrO2 ceramics and ZrO2/SiC composite ceramics. The test specimenwas prepared by hot-press sintering at 35 MPa and 1723 K in a vacuum condition for 1 h. We were carried out bending test,the Vickers hardness and the abrasion test. The bending strength of as-received Z specimen was about twice higher than thatof as-received ZS specimen. Average hardness of heat treated Z specimen is about 2-16% higher than that of as-receivedspecimen. However, average hardness of as-received ZS specimen was similar to that of as-received Z specimen, averagehardness of heat treated ZS specimen is 11-40% smaller than that of as-received ZS specimen. The friction coefficient of asreceivedZ specimen and heat treated Z specimen were similar as a whole. Friction coefficient of ZS specimen was inverselyproportional to the Vickers hardness. Wear loss of Z and ZS specimens were increased according to the Vickers hardnessdecreases.
Abstract
We was evaluated the wear characterization of monolithic ZrO2 ceramics and ZrO2/SiC composite ceramics. The test specimenwas prepared by hot-press sintering at 35 MPa and 1723 K in a vacuum condition for 1 h. We were carried out bending test,the Vickers hardness and the abrasion test. The bending strength of as-received Z specimen was about twice higher than thatof as-received ZS specimen. Average hardness of heat treated Z specimen is about 2-16% higher than that of as-receivedspecimen. However, average hardness of as-received ZS specimen was similar to that of as-received Z specimen, averagehardness of heat treated ZS specimen is 11-40% smaller than that of as-received ZS specimen. The friction coefficient of asreceivedZ specimen and heat treated Z specimen were similar as a whole. Friction coefficient of ZS specimen was inverselyproportional to the Vickers hardness. Wear loss of Z and ZS specimens were increased according to the Vickers hardnessdecreases.
참고문헌 (25)
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