Phase equilibria studies of Cr3O-type structures in the vanadium- rhodium-silicon and niobium-rhodium-silicon ternary systems
dc.contributor.author | Lawrence, Robert Vernon | en |
dc.contributor.department | Metallurgical Engineering | en |
dc.date.accessioned | 2017-01-30T21:03:12Z | en |
dc.date.available | 2017-01-30T21:03:12Z | en |
dc.date.issued | 1964 | en |
dc.description.abstract | Phase equilibria studies of two ternary systems, the vanadium rhodium-silicon system and the niobium-rhodium-silicon system, were made to obtain information about the formation of the Cr₃O-type structure in these systems. All samples had compositions in the . vicinity of the stoichiometric Cr₃O composition line and were prepared by powder metallurgy techniques. The compacts were then arc-melted, given a homogenization anneal, and examined by x-ray diffraction. Complete solid solubility of silicon for rhodium was found across the V-Rh-Si system in the Cr₃O-type structure. A large range of vanadium compositions for the formation of the Cr₃O-type structure in the V-Rh-Si system was also found. A minimum lattice parameter was found for samples closely approximating the stoichiometric Cr₃O composition in the V-Rh-si system. Either an increase or a decrease in vanadium composition from stoichiometry caused an increase in the lattice parameter of the Cr₃O-type structure formed. No solid solubility of silicon for rhodium was found in the niobium-rhodium-silicon system. Apparently the only Cr₃O-type structure which forms in the Nb-Rh-Si system is of' the stoichiometric composition Nb₃Rh. | en |
dc.description.degree | Master of Science | en |
dc.format.extent | 65 leaves | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.uri | http://hdl.handle.net/10919/74578 | en |
dc.language.iso | en_US | en |
dc.publisher | Virginia Polytechnic Institute | en |
dc.relation.isformatof | OCLC# 20865574 | en |
dc.rights | In Copyright | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject.lcc | LD5655.V855 1964.L387 | en |
dc.subject.lcsh | Superconductors -- Experiments | en |
dc.subject.lcsh | Binary systems (Metallurgy) | en |
dc.title | Phase equilibria studies of Cr3O-type structures in the vanadium- rhodium-silicon and niobium-rhodium-silicon ternary systems | en |
dc.type | Thesis | en |
dc.type.dcmitype | Text | en |
thesis.degree.discipline | Metallurgical Engineering | en |
thesis.degree.grantor | Virginia Polytechnic Institute | en |
thesis.degree.level | masters | en |
thesis.degree.name | Master of Science | en |
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