Equilibrium study of the Fe-V-S system by thermogravimetry.

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概要

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• An equilibrium study of the Fe–V–S system was carried out in the range of log(<I>P</I><SUB>S<SUB>2</SUB></SUB>/atm)=−4 to −0.8 at temperatures between 723 and 1093 K. The gravimetric method was employed by making use of a quartz spring balance. The partial pressure of sulfur was controlled in an N<SUB>2</SUB>-sulfur vapor system by temperature regulation. The partial pressure of S<SUB>2</SUB> was calculated from the thermodynamic data, taking account of the existence of different molecular species: S<SUB>2</SUB> through S<SUB>8</SUB>. Three kinds of ternary sulfides with different Fe/V ratios were used as starting material. The <I>P</I><SUB>S<SUB>2</SUB></SUB>-<I>T</I>-<I>X</I> relation was established through <I>in situ</I> measurements at high temperatures. It was found that the Fe–V–S system has an extensive ternary solid solution with the NiAs type of fundamental structure.

• 公益社団法人 日本化学会の論文

著者

• Wada Hiroaki

  National Institute For Research In Inorganic Materials

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• Equilibrium study of the Fe-V-S system by thermogravimetry.

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