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Phase Relations in the Systems A 2 O‐Metal Oxide‐WO 3 (A=Li, Na; Metal=Fe, Cr, Sn, Zr, Th, V)
Author(s) -
SPINNLER GERARD E.,
CHANG LUKE L. Y.
Publication year - 1981
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1981.tb10324.x
Subject(s) - wolframite , oxide , ternary operation , alkali metal , phase (matter) , solid solution , materials science , metal , inorganic chemistry , crystallography , chemistry , tungsten , metallurgy , programming language , organic chemistry , computer science
Phase relations, with special emphasis on the formation of wolframite‐type phases, were determined in 12 ternary systems, each containing an alkali oxide (Li 2 O, Na 2 O), a polyvalent oxide (Fe 2 O 3 , Cr 2 O 3 , SnO 2 , ThO 2 , ZrO 2 , V 2 O 5 ), and WO 3 . Among 12 ternary phases characterized, 5 have the wolframite‐type structure. They are LiFe(WO 4 ) 2 , LiCr(WO 4 ) 2 , NaFe(WO 4 ) 2 , NaCr(WO 4 ) 2 , and Li 2 Zr(WO 4 ) 3 . Complete series of solid solutions exist along Li(Fe,Cr) (WO 4 ) 2 and Na(Fe,Cr)(WO 4 ) 2 joins but not along other wolframite joins. Both LiFe(WO 4 ) 2 and LiCr(WO 4 ) 2 were also found to form complete solid solution series with MgWO 4 , a compound used hi this study to represent the simple wolframite‐type phase.