- 슬러리 코팅 공정으로 제조된 Fe 폼의 기공 특성에 미치는 바인더 함량의 영향
- ㆍ 저자명
- 최진호,양상선,김양도,윤중열,Choi. Jin Ho,Yang. Sangsun,Kim. Yang-Do,Yun. Jung-Yeul
- ㆍ 간행물명
- 한국분말야금학회지
- ㆍ 권/호정보
- 2013년|20권 6호|pp.439-444 (6 pages)
- ㆍ 발행정보
- 한국분말야금학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Fe foam with above 90% porosity and 2 millimeter pore size was successfully fabricated by a slurry coating process. In this study, the binder contents were controlled to produce the Fe foam with different pore size, strut thickness and porosity. Firstly, the slurry was prepared by uniform mixing with Fe powders, distilled water and polyvinyl alcohol(PVA) as initial materials. After slurry coating on the polyurethane(PU) foam the sample was dried at $80^{circ}C$. The PVA and PU foams were then removed by heating at $700^{circ}C$ for 3 hours. The debinded samples were subsequently sintered at $1250^{circ}C$ with holding time of 3 hours under hydrogen atmosphere. The three dimensional geometries of the obtained Fe foams with open cell structure were investigated using X-ray micro CT(computed tomography) as well as the pore morphology, size and phase.