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X‐RAY STUDY OF LIME‐PHOSPHATE AND LIME‐BORATE GLASS *
Author(s) -
Biscoe J.,
Pincus A. G.,
Smith C. S.,
Warren B. 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.tb14833.x
Subject(s) - lime , boron , phosphate , phosphorus , soda lime , oxygen , chemistry , soda lime glass , inorganic chemistry , mineralogy , ion , materials science , analytical chemistry (journal) , metallurgy , environmental chemistry , organic chemistry
A bstract X‐ray diffraction patterns have been made of two lime‐phosphate glasses with compositions of 23% and 28% of CaO by weight, and of one lime‐borate glass with 25% of CaO. Fourier analyses of these patterns were carried out, and the radial distribution curves were plotted. In the lime‐phosphate glasses, each phosphorus is tetrahedrally bonded to 4 oxygens at a distance of 1.57 A, and each oxygen is bonded to either 1 or 2 phosphorus atoms. The calcium ions, Ca ++ , are situated in the holes in the phosphorus‐oxygen network and have about 7 oxygen neighbors. In the lime‐borate glass, some of the borons are triangularly bonded to 3 oxygens, and the others are tetrahedrally bonded to 4 oxygens.