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Acta Metall Sin  1993, Vol. 29 Issue (10): 62-67    DOI:
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PHASE RELATION OF SYSTEM Na_2O-Ga_2O_3
WANG Xinhua;FURUYAMA;Sadao;FUKUZAWA Akira Univrsity of Science and Technology Beijing Chemical Processing Division; National Research Institute for Metals; Tokyo; Japan
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WANG Xinhua;FURUYAMA;Sadao;FUKUZAWA Akira Univrsity of Science and Technology Beijing Chemical Processing Division; National Research Institute for Metals; Tokyo; Japan. PHASE RELATION OF SYSTEM Na_2O-Ga_2O_3. Acta Metall Sin, 1993, 29(10): 62-67.

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Abstract  Phase relation of the system Na_2O-Ga_2O_3 containing more than 50mol%Ga_2O_3 was investigated by DTA and room temperature X-ray powder diffraction an-alyses. It was found that four compounds Na_2O·Ga_2O_3, 2Na_2O·3Ga_2O_3, Na_2O·3Ga_2O_3 and Na_2O·5Ga_2O_3 exist in the system. The compound 2Na_2O·3Ga_2O_3 decom-poses to Na_2O·Ga_2O_3 and Na_2O·3Ga_2O_3 at temperature above 976±8℃. Na_2O·Ga_2O_3, Na_2O·3Ga_2O_3 and Na_2O·5Ga_2O_3 melt all incongruently at 1382±1℃, 1285±5℃ and 1417±4℃ respectively. The previously unindexed X-ray diffraction data for2Na_2O·3Ga_2O_3 and Na_2O·3Ga_2O_3 are reported.
Key words:  Na_2O      Ga_2O_3      Na_2O·Ga_2O_3      2Na_2O·3Ga_2O_3      Na_2O·3Ga_2O_3      Na_2O·5Ga_2O_3      phase relation      phase diagram     
Received:  18 October 1993     
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