Enthalpy of Formation of MgAl_2O_4 • 0.793Al_2O_3 Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data

Gribchenkova N. A.; Smorchkov K. G.; Kolmakov A. G.; Alikhanyan A. S.

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Enthalpy of Formation of MgAl_2O_4 • 0.793Al_2O_3 Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data

机译：高温质谱数据在1900 K时MgAl_2O_4•0.793Al_2O_3非化学计量尖晶石的形成焓

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The composition and partial pressures of vapor species over the pseudobinary system Al2O3-MgO have been determined by high-temperature mass spectrometry. The data obtained have been used to evaluate the standard enthalpy of formation of nonstoichiometric spinel with the composition MgAl2O4 center dot 0.793Al(2)O(3) from its constituent oxides by third-law calculations. The entropy of MgAl2O4 center dot 0.793Al(2)O(3) has been evaluated using a regular-solution model with allowance for cation inversion.

机译：假二元体系Al2O3-MgO上的蒸气种类的组成和分压已经通过高温质谱法确定。通过第三定律计算，已将获得的数据用于评估由其组成氧化物组成MgAl2O4中心点0.793Al（2）O（3）组成的非化学计量尖晶石的标准焓。 MgAl2O4中心点0.793Al（2）O（3）的熵已使用允许阳离子转化的常规溶液模型进行了评估。

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来源
《Inorganic materials》 |2018年第6期|575-580|共6页
作者
Gribchenkova N. A.; Smorchkov K. G.; Kolmakov A. G.; Alikhanyan A. S.;
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作者单位

Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninskii Pr 31, Moscow 119991, Russia;

Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninskii Pr 31, Moscow 119991, Russia;

Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia;

Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninskii Pr 31, Moscow 119991, Russia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
Knudsen effusion mass spectrometry; Al2O3-MgO system; nonstoichiometric spinel; thermodynamic activity; regular solution; standard enthalpy;

机译：努森渗流质谱;Al2O3-MgO系统;非化学计量尖晶石;热力学活性;规则溶液;标准焓;

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Enthalpy of Formation of MgAl_2O_4 • 0.793Al_2O_3 Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data

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