Accession Number : AD0430096

Title :   RESEARCH ON THE SAMARIUM-TYPE INTERMEDIATE PHASES OF INTRA-RARE-EARTH BINARY SYSTEMS.

Descriptive Note : Technical rept. no. 2, 1 Jan-31 Dec 63,

Corporate Author : DENVER RESEARCH INST COLO

Personal Author(s) : Lundin,C. E. ; Nachman,J. F.

Report Date : JAN 1964

Pagination or Media Count : 26

Abstract : Five new binary intra-rare-earth systems were investigated to confirm the existence of the samarium-type intermediate phase. These systems are: La-Ho, Ce-Gd, Ce-Ho, Nd-Gd, and Nd-Ho. The systems were studies primarily by metallography and X-ray diffraction techniques. The limits of the single-phase terminal solid solutions and the two-phase regions were determined. Lattice parameters for the intermediate phases were determined, and the approximate composition of each was established. A complete metallographic analysis of the phase equilibria in each system is presented. The position of the intermediate phase correlates well with a size effect factor of the two components in each respective system. (Author)

Descriptors :   (*RARE EARTH ELEMENTS, ALLOYS), CERIUM ALLOYS, GADOLINIUM ALLOYS, HOLMIUM, LANTHANUM, NEODYMIUM ALLOYS, METALLOGRAPHY, X RAY DIFFRACTION, PHASE STUDIES, PHOTOMICROGRAPHY, HARDNESS, DENSITY, INSTRUMENTATION, TRANSITION TEMPERATURE, CRYSTAL STRUCTURE, CRYSTAL LATTICES

Distribution Statement : APPROVED FOR PUBLIC RELEASE