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Intermediate phases in some rare earth-ruthenium systemsThe phase equilibria and crystal structures of intermediate phases were investigated in eight representative RE-Ru systems using powder X-ray diffraction and metallographic techniques. The Fe3C, Mn5C2 and Er5Ru3 structures occur in all but the Ce-Ru systems. Phases analogous to Er5Ru3 possess an unknown crystal structure similar to Er5Rh3(I). MgCu2 and MgZn2 type Laves phases are encountered in the light rare earth and heavy rare earth systems, respectively, and RERu2 phases, where RE = Nd and Sm, possess both the Laves phase structures. An intermediate phase, NdRu, with an unknown structure, occurs only in the Nd-Ru system. A bcc structure with 40 atoms per unit cell is encountered in the phases Er3Ru2 and Y3Ru2. The behavior of cerium in Ce-Ru alloys is unique in that four unidentified structures, not encountered in other RE-Ru systems, have been encountered. Also a phase designated as Ce3Ru is found with the Th7Fe3 type structure.
Document ID
19850032719
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sharifrazi, P.
(Louisiana State Univ. Baton Rouge, LA, United States)
Raman, A.
(Louisiana State University Baton Rouge, LA, United States)
Mohanty, R. C.
(Southern University Baton Rouge, LA, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Zeitschrift fuer Metallkunde
Volume: 75
ISSN: 0044-3093
Subject Category
Metallic Materials
Accession Number
85A14870
Funding Number(s)
CONTRACT_GRANT: NAG8-004
Distribution Limits
Public
Copyright
Other

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