- 분말 성형체로부터 양축정렬 집합조직을 갖는 니켈 테이프의 제조
- ㆍ 저자명
- 이동욱,지봉기,주진호,김찬중
- ㆍ 간행물명
- 한국분말야금학회지
- ㆍ 권/호정보
- 2003년|10권 4호|pp.241-248 (8 pages)
- ㆍ 발행정보
- 한국분말야금학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Biaxially textured Ni tapes were fabricated by a cold working and recrystallization heat treatment processes from powder compact rods. The processing parameters associated with the cube texture formation in Ni tapes were systematically investigated by using X-ray diffraction and pole-figure analysis. The Ni powder used in this study was 5 $mu$m in size and 99.99% in purity. To find the optimum sintering temperature, tensile tests were performed for Ni rods sintered at various temperatures. The Ni rods sintered at 100$0^{circ}C$ showed poor elongation and low fracture strength, while the Wi rods sintered above 100$0^{circ}C$ revealed good mechanical properties. The higher elongation and fracture strength of the Ni rods sintered at higher temperatures than 100$0^{circ}C$ are attributed to the full densification of the sintered rods. The sintered Ni rods were cold-rolled with 5% reduction to the final thickness of 100 $mu$m and then annealed for development of rube texture in rolled Ni tapes. The annealed Ni tapes depicted strong cube texture with FWHM(full-width at half-maximum) of in-plane and out-of-plane in the range of 8$^{circ}$ to 10$^{circ}$. The NiO deposited on the Ni tapes by MOCVD process showed good epitaxy with FWHM=10$^{circ}$, which indicates that the Ni tapes can be used as a substrate for YBCO coated conductors.