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자료유형
학술대회자료
저자정보
이영호 (한국원자력연구소) 김형규 (한국원자력연구소) 정연호 (한국원자력연구소)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 학술대회 제37권
발행연도
2003.11
수록면
313 - 323 (11page)

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The sliding wear behaviors of Zircaloy-4 nuclear fuel rod were investigated using two support springs with convex and concave shapes in room temperature air and water. The main focus is to compare the wear behavior of various test variables such as slip amplitude, environment, contact contours with different spring shape and a number of cycles. The results indicated that wear volume and maximum wear depth increased with slip amplitude in both air and water, but their trends tended to change according to the spring shapes and test environments. In air condition, the wear volume was controlled by wear debris behavior generated on worn surface. As a result, final wear volume and maximum wear depth decreased if a ratio of protruded wear volume to worn area (D<SUB>p</SUB>) would be saturated to specific value. This is because wear particle layer could accommodate large strain by accumulating and transforming wear particle layer. However, in water condition, metal-to metal contact was more dominant and wear volume was greatly affected by changed mechanical behavior between contact surfaces since wear debris should be generated after repeated plastic deformation and fracture. After wear test, worn surfaces were examined using optical microscope and SEM and details of wear mechanism were discussed using a ratio of wear volume to worn area (D<SUB>e</SUB>) at each test condition.

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Abstract
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2. 실험관련
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