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ORTHOSILICATES OF THE ALKALINE EARTHS WITH SPECIAL REFERENCE TO THEIR USES IN THE REFRACTORY FIELD *
Author(s) -
Seil Gilbert E.
Publication year - 1941
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.1151-2916.1941.tb14447.x
Subject(s) - strontium , alkaline earth metal , barium , decomposition , refractory (planetary science) , chemistry , periclase , mineralogy , materials science , magnesium , inorganic chemistry , metallurgy , metal , organic chemistry
A bstract The orthosilicates of barium, strontium, calcium, and magnesium; mixed orthosilicates; and mixtures of the orthosilicates of the alkaline earth group are discussed. The effect of periclase on these types of orthosilicates at high temperatures is described. Tabulations are given of the physical properties and chemical compositions of the orthosilicates, including their chemical and mineralogical names, melting points, decomposition points, molecular weights, chemical compositions, crystalline systems, indices of refraction, optical signs, specific gravities, and specific volumes. New data and many illustrations are submitted to show the range of critical temperatures at which reactions take place and at which stabilization is effective. The order of formation is discussed in detail with special reference to the effect of the composition of the starting materials on the rate of reaction and on the critical temperatures at which the orthosilicates are formed.