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The melting points and melting characters for compounds existing in this system have been refined . The composition of crystallizing phases and compounds is affected by the thermal history of samples . Table 1.
The melting points and melting characters for compounds existing in this system have been refined . The composition of crystallizing phases and compounds is affected by the thermal history of samples . Table 1.
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repeated runs , only the metastable melting of sodium metaborate crystals was observed at 702 ° C ; the temper- ... the medium - temperature ẞ - phase crystallized spontane- ously in several hours ; this phase melted congruently at 722 ...
repeated runs , only the metastable melting of sodium metaborate crystals was observed at 702 ° C ; the temper- ... the medium - temperature ẞ - phase crystallized spontane- ously in several hours ; this phase melted congruently at 722 ...
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1 , 2 ; Table 2 ) at 722 ° C . This result is in fair agreement with the metasta- ble congruent melting of the sodium triborate ẞ - phase at 728 ° C [ 3 ] , 725 ° C [ 6 ] , and 720 ( Ref . [ 33 ] in [ 6 ] ) .
1 , 2 ; Table 2 ) at 722 ° C . This result is in fair agreement with the metasta- ble congruent melting of the sodium triborate ẞ - phase at 728 ° C [ 3 ] , 725 ° C [ 6 ] , and 720 ( Ref . [ 33 ] in [ 6 ] ) .
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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