학술논문
Interstitial site occupation in ZrNiH
Document Type
Conference
Author
Source
Conference: International symposium on the properties and applications of metal hydrides, Toba, Japan, 30 May 1982; Other Information: Portions are illegible in microfiche products
Subject
Language
English
Abstract
In-situ x-ray diffraction measurements during step-wise hydrogenation of the intermetallic compound ZrNi have confirmed the existence of a stable compound ZrNiH. Neutron diffraction measurements on ZrNiD have allowed a determination of the site occupied by D. This site is tetrahedrally coordinated by four Zr atoms as predicted earlier from a model based solely on geometric considerations. Occupation of this site causes the lattice to distort from an orthorhombic to a triclinic structure. The trihydride is formed when two completely different types of sites are filled, to the exclusion of the sites occupied originally, causing reversion of the lattice to an orthorhombic structure. Other confirmed predictions of the geometric model are discussed. 3 figures.