Enthalpies of formation of some phases present in the Y-Ba-Cu-O system by solution calorimetry
作者： Zhang Hengzhong , Fang Zheng , Zhang Pingmin , Chen Xinmin
DOI: 10.1007/BF00973207
关键词:
摘要: Enthalpies of some the phases in Y−Ba−Cu−O system were determined by solution calorimetry using a Calvet microcalorimeter. The standard enthalpies formation for found to be YBa2Cu3O6.60, −2627.9; YBa2Cu3O6.77, −2641.8; YBa2Cu3O6.90, −2652.0; YBa2Cu3O6.99, −2659.3; Y2Cu2O5, −2198.6; Y2BaCuO5, −2656.4; BaCuO2.33, −788.6; and BaCuO2.42, −796.2 kJ-mol−1.
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