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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제15권 제3호
발행연도
2001.8
수록면
49 - 57 (9page)

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초록· 키워드

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One of the most important considerations to braze Cu-Al dissimilar materials is control of brittle metallic compound which makes it difficult to obtain a sound brazed joint. Nowdays, several attempts were made to control the metallic compound. But effective method for controlling metallic compound was not established. In this point of view, commercially pure aluminum and copper were used as base metal and Al-Si-X and Zn-Al-X alloy systems were developed as filler metal. Brazing was carried out to find optimum conditions for Cu-Al dissilmilar joint.
The results obtained in this study were summarized as follows:
1) The joint brazed by Al-Si-X filler metal showed good brazeability and mechanical properties. The tensile strength of the joint brazed over solidus temperature was more than 90% of Al base metal. Especially, the joint brazed at liquidus temperature was fractured in the Al base metal.
2) Fluorides fluxes(a mixture of potassium fluoro-aluminates) were used to improve surface cleanliness of base metal and wettability of Al-Si-X filler metal. It was melted at the temperature about 10℃ lower than that of the filler metal, and made appropriate brazing environment. Therefore, it could be a proper selection as flux.

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ABSTRACT
1. 서론
2. 실험재료 및 실험방법
3. 실험결과 및 고찰
4. 결론
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