고에너지 밀링공정을 이용한 조대 마그네슘 분말의 미세화 거동

송준우; 김효섭; 김홍물; 홍순직; 김택수

추천

검색

자료유형: 학술저널

저자정보: 송준우 김효섭 김홍물 홍순직 김택수

저널정보: 한국분말야금학회 한국분말야금학회지 한국분말야금학회지 제17권 제4호

발행연도: 2010.1

수록면: 302 - 311 (10page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In this research, the refinement behavior of the coarse magnesium powders fabricated by gas atomization was investigated as a function of milling time using a short duration high-energy ball milling equipment,which produces fine powders by means of an ultra high-energy within a short duration. The microstructure, hardness,and formability of the powders were investigated as a function of milling time using X-ray diffraction, scanning electron microscopy, Vickers micro-hardness tester and magnetic pulsed compaction. The particle morphology of Mg powders changed from spherical particles of feed metals to irregular oval particles, then platetype particles, with increasing milling time. Due to having HCP structure, deformation occurs due to the existence of the easily breakable C-axis perpendicular to the base, resulting in producing plate-type powders. With increasing milling time, the particle size increased until 5 minutes, then decreased gradually reaching a uniform size of about 50 micrometer after 20 minutes. The relative density of the initial power was 98% before milling, and mechanically milled powder was 92~94% with increase milling time (1~5 min) then it increased to 99% after milling for 20 minutes because of the change in particle shapes.

#Microstructure #Rapid solidification #High energy milling #Magnesium #Refinement

참고문헌 (22)

참고문헌 신청

B. Ghosh / 2009 / / J. Alloys Compd 477 : 127 ~

B. Ghosh / 2009 / / J. Alloys compd 486 : 480 ~

B. L. Mordike / 2001 / / Mater. Sci. Eng 37 : 302 ~

B. Wolf / 2004 / / Int. J. Fatigue 26 : 1357 ~

C. Chen / 1999 / / Mater. Sci.Eng 272 : 363 ~

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!