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BERYLLIUM GLASS, II POTASSIUM‐BERYLLIUM SERIES 1
Author(s) -
Lai Chi Fano,
Silverman Alexander
Publication year - 1930
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.1151-2916.1930.tb16289.x
Subject(s) - beryllium , manganese , mineralogy , potassium , materials science , oxide , inorganic chemistry , beryllium oxide , metallurgy , impurity , chemistry , analytical chemistry (journal) , environmental chemistry , organic chemistry
ABSTRACT This paper includes a triaxial diagram for the potash series, containing two good glass areas in contrast with a single area in the soda series. 3 One area is in the region of low beryllia and high silica; the other in the region of high beryllia and low silica. The latter contains the better glasses. Areas are also shown in which the tendency to increase silica produces opalescence while that toward an increase of beryllis promotes divitrification. Great difficulty has been experienced in obtaining pure beryllium oxide. Material that was supposedly pure contained as much as 20° of moisture. Difficulty has been encountered also through such impurities as the oxides of iron and manganese. One sample of supposedly C.P. beryllium oxide contained over 90° alumina. Optical data are not yet available. As was the case with the sodium beryllium silicates. so here again the announcement is the first of the potassium‐beryllium glasses, t o the best knowledge of the authors.