Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"scheelite"”.
-
Ferrotungsten: the direct reduction of scheelite by ferrosilicon
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1943.
-
The crystal chemistry of MTO₄ compounds with the zicron, scheelite, and monazite structure types
The crystal structures of zircon, scheelite, and monazite are very closely related. All three have chains of alternating polyhedra and planes of closest packed or pseudo-closest packed cations. Using these similarities the unit cells of these structures can be placed in analogous orientations. This …
-
Avaliação tribológica de compósitos de PTFE e rejeito de scheelita aplicáveis a mancais secos
… has objective to investigate, tribologically, a scheelite tailings- filled PTFE composites to dry rubbing journal bearings application, to reduce cost and extend life service of this parts. The tailing of scheelite, obtained from scheelite mining to produce tungsten, is a mineral spoilage …
-
A study of the crystal chemistry, cathodoluminescence, geochemistry and oxygen isotopes in Scheelite: application towards discriminating among differing ore-deposit systems
Scheelite (CaWO4) from a total of 37 of world-wide, differing ore-deposit settings (orogenic, sediment- and greenstone-hosted, skarn, porphyry, greisen, volcanogenic massive sulfide, breccia and polymetallic deposits) were examined using cathodoluminescence, SEMEDS, LA-ICP-MS and whole-grain stable …
-
Domain structure, phase transformation, mechanical behavior and shape memory effect in a rare-earth orthoniobate lanthanum niobate
… high- and low-temperature phases possess the scheelite structure, and the low temperature monoclinic phase is heavily domained. The transformation mechanism is unknown. The domain structure in the monoclinic phase was reported as ""type III"" twins with highly mobile boundaries, exhibiting a …