Camphor-Naphthalene 동결제 조성이 Cu-Ni 다공체의 기공구조에 미치는 영향
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2015.10
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서지정보
ㆍ발행기관 : 한국분말야금학회
ㆍ수록지정보 : 한국분말야금학회지 / 22권 / 5호
ㆍ저자명 : 권나연, 석명진, 오승탁
목차
1. 서 론
2. 실험방법
3. 실험결과 및 고찰
4. 결 론
감사의 글
References
영어 초록
The effect of sublimable vehicle composition in the camphor-naphthalene system on the pore structure ofporous Cu-Ni alloy is investigated. The CuO-NiO mixed slurries with hypoeutectic, eutectic and hypereutectic compo-sitions are frozen into a mold at -25oC. Pores are generated by sublimation of the vehicles at room temperature. Afterhydrogen reduction at 300oC and sintering at 850oC for 1 h, the green body of CuO-NiO is completely converted toporous Cu-Ni alloy with various pore structures. The sintered samples show large pores which are aligned parallel to thesublimable vehicle growth direction. The pore size and porosity decrease with increase in powder content due to thedegree of powder rearrangement in slurry. In the hypoeutectic composition slurry, small pores with dendritic morphologyare observed in the sintered Cu-Ni, whereas the specimen of hypereutectic composition shows pore structure of plateshape. The change of pore structure is explained by growth behavior of primary camphor and naphthalene crystals dur-ing solidification of camphor-naphthalene alloys.
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