김영도
2017-10-10T07:14:03Z
2017-10-10T07:14:03Z
2015-12
한국분말야금학회지, v. 22, NO 6, Page. 426-431
2287-8173
1225-7591
http://ejournal.kpmi.or.kr/journal/article.php?code=37820
http://hdl.handle.net/20.500.11754/29552
Microstructural examination of the Nb-Si-B alloys at Nb-rich compositions was performed. The Nb-rich corner of the Nb-Si-B system is favorable in that the constituent phases are Nb (ductile and tough phase with high melting temperature) and T2 phase (very hard intermetallic compound with favorable oxidation resistance) which are good combination for high temperature structural materials. The samples containing compositions near Nb-rich corner of the Nb-Si-B ternary system were prepared by spark plasma sintering (SPS) process using T2 and Nb powders. T2 bulk phase was made in arc furnace by melting the Nb slug and the Si-B powder compact. The T2 bulk phase was subsequently ball-milled to powders. SPS was performed at 1300oC and 1400oC, depending on the composition, under 30 MPa for 600s, to produce disc-shaped specimen with 15 mm in diameter and 3 mm high. Hardness tests (Rockwell A-scale and micro Vickers) were carried out to estimate the mechanical property.
본 연구는 국방과학연구소의 연구비 지원(과제번호: 211155-911059011)과 2014년도 강원대학교 학술연구조성비(관리번호: 220140051)로 수행되었으며 이에 감사를 드립니다.
ko_KR
한국분말야금학회
Spark plasma sintering
Nb-Si-B
T2
Intermetallic compound
Hardness
방전 플라즈마 소결(Spark Plasma Sintering) 방법에 의해 제조된 Nb-Si-B계 합금의 미세조직 특성
Microstructure Characterization of Nb-Si-B alloys Prepared by Spark Plasma Sintering Process
Article
6
22
10.4150/KPMI.2015.22.6.426
426-431
한국분말야금학회지
김상환
김남우
정영근
오승탁
김영도
이성
석명진
Kim, Sang-Hwan
Kim, Nam-Woo
Jeong, Young-Keun
Oh, Sung-Tag
Kim, Young Do
Lee, Seong
Suk, Myung Jin
2015040854
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE AND ENGINEERING
ydkim1