PHASE DIAGRAM OF PrCl_3-SrCl_2-CaCl_2 SYSTEM

Abstract

Abstract: Five fields corresponding to the primary crystallization of PrCl_3,Sr_3PrCl_9,α(SrCl_2, CaCl_2),α_1(CaCl_2,SrCl_2)and α_2(SrCl_2,CaCl_2)respectively,six univariant lines related to the secondary crystallization,one ternary eutectic(48.0 wt-% PrCl_3,23.5 wt-% SrCl_2; 590℃)and ternary peritectic point(45.5 wt-% PrCl_3,24.5 wt-% SrCl_2;614℃) were determined by DTA.Attempts were also made to explore the rule governing the alteration in the phase diagram containing rare earth chloride,formation of compound and its stability by means of polarization and counter-polarization.

Key words: PrCl_3, PrCl-3-SrC1_2-CaCl_2, phase diagram, rule of pihase diagram

ZHENG Chaogui BAO Chenglin QIAO Zhiyu YE Yupu Peking University,Beijing,China 1 University of Science and Technology Beijing,Beijing,China Associate Professor,Department of Chemistry,Peking University,Beijing 100871,China. PHASE DIAGRAM OF PrCl_3-SrCl_2-CaCl_2 SYSTEM[J]. Acta Metallurgica Sinica (English Letters), 1993, 6(7): 46-51.

References

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