ACTIVITIES OF COMPONENTS IN MgO-B_2O

金属学报(英文版), 1990, 3(7): 20-22.

ACTIVITIES OF COMPONENTS IN MgO-B_2O_3 MELT

ZHANG Chengtao JI Chunlin Northeast University of Technology , Shenyang , China ZHANG Chengtao , Division of Physical Chemistry of Metallurgy , Northeast University of Technology , Shenyang , China

Keywords： MgO-B_2O_3 , null , null

The activity of MgO in MgO-B2O_3 melt was experimentally determined at 1773 and 1823 K by means of slag-liquid Sn equilibrium.The activity of B_2O_3 was calculated by integrating Gibbs-Duhem equation.The standard Gibbs energies of formation of binary compounds 2MgOB_2O_3 and 3MgO·B_2O_3 were estimated with the activity data of components in B_2O_3-MgO melt.

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ACTIVITIES OF COMPONENTS IN MgO-B_2O_3 MELT

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