PHASE DIAGRAMS OF SmCl_3-PbCl_2 AND SmCl_3-PbCl_2-CaCl_2

Acta Metall Sin

1993, Vol. 29

Issue (2): 70-73 DOI:

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PHASE DIAGRAMS OF SmCl_3-PbCl_2 AND SmCl_3-PbCl_2-CaCl_2

WANG Shulan;ZHANG Yifeng;SUI Dianpeng Northeast University of Technology; Shenyang

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WANG Shulan;ZHANG Yifeng;SUI Dianpeng Northeast University of Technology; Shenyang. PHASE DIAGRAMS OF SmCl_3-PbCl_2 AND SmCl_3-PbCl_2-CaCl_2. Acta Metall Sin, 1993, 29(2): 70-73.

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Abstract Phase diagrams of binary system SmCl_3-PbCl_2 and ternary systemSmCl_3-PbCl_2-CaC_2, have been determined by DTA and X-ray diffraction analyses. In theSmCl_3-PbCl_2 system, an incongruent compound 3SmCl_3-PbCl_2, an eutectic point at 452℃containing 33.0 mol-% SmCl_3 and a peritectic point at 465℃ containing 42.0 mol-%SmCl_3 were obtained. In the SmCl_3-PbCl_2-CaCl_2 system, 4 liquiduses corresponding to theprimary crystallization of SmCl_3, PbCl_2, CaCl_2, and 3SmCl_3·PbCl_2, respectively, 5unvariant lines related to the secondary crystallization, a ternary eutectic point at 396℃ con-taining 29.5 SmCl_3 and 58.0 PbCl_2 by mol-% and a ternary peritectic point at 417℃ con-taining 36.0 SmCl_3 and 50.0 PbCl_2 by mol-% were found. Two reactions corresponding to 4phase equilibriums are L=CaCl_2+PbCl_2+3SmCl_3·PbCl_2 and L+SmCl_3=CaCl_2+3SmCl_3·PbCl_2.

Key words: phase diagram SmCl_3 PbCl_2 CaCl_2

Received: 18 February 1993

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