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Influence of Platinum Nucleation on Constitution of and Phase Separation in Sodium Phosphate Glasses
Author(s) -
MURTHY M. KRISHNA
Publication year - 1961
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.1151-2916.1961.tb15473.x
Subject(s) - platinum , nucleation , electron micrographs , sodium , phase (matter) , materials science , phosphate , sodium phosphates , chemistry , inorganic chemistry , chemical engineering , electron microscope , catalysis , metallurgy , organic chemistry , optics , engineering , physics
Published work in the literature indicates that small amounts of platinum bring about phase separation in sodium phosphate melts which can be recognized in electron micrographs. The influence of 0.0038, 0.0076, 0.038, and 0.15% platinum on the constitution of and phase separation in sodium phosphate glasses with n, the number average chain length, varying from 3 to 9 has been investigated using both paper chromatographic and electron microscopic techniques. The results indicate that platinum nucleation apparently has no effect on the distribution of polyphosphates in the glasses studied, although electron micrographs show phase separation. The significance of the results in relation to immiscibility phenomena is discussed.