Vanadium-Boride코팅의 고온 내입자침식성 평

이의열; 김종하; 정세일; 이선호; 엄기원

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자료유형: 학술저널

저자정보: 이의열 김종하 정세일 이선호 엄기원

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제14권 제2호

발행연도: 2015.1

수록면: 76 - 84 (9page)

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연구주제

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연구배경

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연구방법

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연구결과

초록· 키워드

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The components in ultra super critical (USC) steam turbine, which is under development for high efficient power generation, are encountering harsher solid particle erosion by iron oxide scales than ones in the existing steam turbines. Therefore, the currently used boride coating will not be able to hold effective protection from particle erosion in USC system and should be replaced by new particle erosion resistant coatings. One of the best protective coatings developed for USC steam turbine parts was found to be vanadium-boride (V-boride) coating which has a hardness of about 3000 HV, much higher than that of boride, 1600∼2000 HV. In order to evaluate particle erosion resistance of the various coatings such as V-boride, boride and Cr-carbide coatings at high temperature, particle erosion test equipments were designed and manufactured. In addition, erosion particle velocity was simulated using FLUENT software based on semi-implicity method for pressure linked equations revised (SIMPLER). Based on experimental results of this work, the vanadium-boride coating was found to be superior to others and to be a candidate coating to replace the boride coating

#USC steam turbine #particle erosion #vanadium-boride coating #boride coating #particle velocity

참고문헌 (9)

참고문헌 신청

A. V. Levy / 1988 / / Surf. Coating Tech 36 : 387 ~

B. Venkataraman / 1995 / / Surf. Coating Tech 73 : 177 ~

J. S. Vandergraft / 1983 / Introduction to Numerical Computation / Academic Press : 149 ~

K. C. Goretta / 1993 / / Mater. Sci. Eng. A 161 : L7 ~

R. Chatterjee-Fischer / 1976 / Proceedings of Heat Treatment / Stratford-upon-Avon Metals Society : 27 ~

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