발간논문

Home > KJMM 논문 > 발간논문

Vol.38, No.1, 200 ~ 207, 2000
Title
Pesearch Paper / Physical Chemistry : Hydriding / Dehydriding Properties of the Amorphous / Nanostructured Mg2NiHx Hydrogen Absorbing Materials
홍태환Tae Whan Hong,김명규Myoung Gyun Kim,김세광Shae Kwang Kim,김영직Young Jig Kim
Abstract
Amorphous or nanocrystalline solid states are gaining increased importance for hydrogen absorbing materials. Especially, in the case of Mg alloys, great improvements of hydrogenation properties can be achieved by nanocrystallization. In this study, Amor-/Nanocrystalline Mg₂NiH_X was fabricated from Mg and Ni chips by mechanical alloying for 96h under 2 MPa hydrogen atmosphere. The homogeneous Mg₂NiH_X was formed in 66 : 1 ball to chips weight ratio(BCR). The results of XRD and TEM revealed that the phases were composed of the amorphous and the nanocrystalline less than 10 ㎚. From the results of pressure-composition-isotherm(PCI) test, the hydrogenation properties were improved compared with the polycrystalline counterparts. But the hydrogen capacity was reduced from 3.6 mass% to 2.25 mass%(at 483K) in the BCR 66 : 1 specimen.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.