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In several standard runs , TA heating traces showed thermal events that we assigned to the formation of metastable eutectics between sodium metaborate and the high - temperature sodium triborate a - phase Na2O · 3B203 at about 690 ° C ...
In several standard runs , TA heating traces showed thermal events that we assigned to the formation of metastable eutectics between sodium metaborate and the high - temperature sodium triborate a - phase Na2O · 3B203 at about 690 ° C ...
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repeated runs , only the metastable melting of sodium metaborate crystals was observed at 702 ° C ; the temper- ature of the sample during heating - cooling cycles changed from ambient to 1100 ° C . For sodium diborate to crystallize ...
repeated runs , only the metastable melting of sodium metaborate crystals was observed at 702 ° C ; the temper- ature of the sample during heating - cooling cycles changed from ambient to 1100 ° C . For sodium diborate to crystallize ...
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Sodium silicates are used as constituents for the syn- thesis of glasses and ceramics . ... The compositional region enriched with sodium oxide was also investigated [ 6 ] . It was demonstrated that 3Na2O · 2SiO2 has a lower stability ...
Sodium silicates are used as constituents for the syn- thesis of glasses and ceramics . ... The compositional region enriched with sodium oxide was also investigated [ 6 ] . It was demonstrated that 3Na2O · 2SiO2 has a lower stability ...
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Vol 48 No 9 | 1282 |
Simultaneous English language translation of the journal is available from MAIK NaukaInterperiodica Russia | 1446 |
Vol 48 No 11 2003 | 1615 |
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absorption acid activation analysis angles anion atoms band bond calculated cations Chem chemical Chemistry cm-¹ complexes components composition compounds concentration constant containing coordination Copyright corresponding crystal crystal structure curves decreases determined diagram distances effect electron energy experimental field formation formed function heating hydrogen increases Inorganic intensity interaction ions Journal Khim layer ligand materials measured melting metal method mixture molecules Moscow Neorg Note observed obtained oxidation oxygen parameters phase Physics positions prepared properties range ratio reaction REFERENCES refined reflections region respectively ring Russian salt samples Sciences shifts shown shows signals single sodium solid solid solutions solubility solutions space space group spectra spectrum spinel stability structure studied Synthesis Table temperature thermal tion trans transition Translation values vibrations X-ray diffraction