The phase composition, structure and distribution of elements and hydrolytic stability of quenched and annealed sodium aluminum phosphate (NAF) and sodium aluminum iron phosphate (NAIP) glass materials containing over 100 & # 37; 10 & # 37; (mass content) oxides of rare earth elements (REE). It was shown that all materials obtained by quenching the melts, except for La-containing ones, were X-ray amorphous, while slowly cooled (annealed) materials partially or completely crystallized with the precipitation of various phases of orthophosphates. The leaching rate of elements from annealed NAF glasses, determined at 90 ° C, is approximately 1 - 2 orders of magnitude higher than from tempered ones, and the leaching rates of elements from tempered NAF glasses are lower than from tempered NAF glasses.
Dr. chem. Sci. S. V. STEFANOVSKY
1 (
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ), Cand. chem. sciences O. I. STEFANOVSKAYA
1 , D. V. SEMENOVA
1,2 , M. I. KADYKO
1 , S. S. DANILOV
3 ;
1 FGBUN & # 171; Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS & # 187; (Russia, Moscow)
2 FGBOU VO & # 171; Russian University of Chemical Technology. D. I. Mendeleev & # 187; (Russia, Moscow)
3 FGBUN & # 171; Institute of Geochemistry and Analytical Chemistry. V.I. Vernadsky RAS & # 187; (Russia, Moscow)
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