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| PHASE DIAGRAM OF BINARY Er-Ge SYSTEM |
| by LI Guoyun (Guangxi Institute of Metrology and Testing; Nanning); ZHENG Jianxuan (C. S. Cheng) (Guangxi University; Nanning) (Manuscript received 2 June; 1982) |
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Cite this article:
by LI Guoyun (Guangxi Institute of Metrology and Testing; Nanning); ZHENG Jianxuan (C. S. Cheng) (Guangxi University; Nanning) (Manuscript received 2 June; 1982). PHASE DIAGRAM OF BINARY Er-Ge SYSTEM. Acta Metall Sin, 1983, 19(4): 127-130.
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Abstract Studies of the region≤50 at.-％ Er in the phase diagram of binary Er-Ge system were determined by X-ray diffraction analysis and DTA. Three compounds: ErGe_2, Er_2Ge_3 and ErGe were observed in this region. A eutectic reaction composed of 23 at.-％ Er occurs at 866℃. ErGe_2 and Er_2Ge_3 are formed by two peritectic reactions at 900 and 1043℃ respectively. DTA indicated that ErGe_2 undergoes a polymorphic transformation at 886℃. There is no detectable solubility of Er in Ge.
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Received: 18 April 1983
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1 Schmidt, F. A.; McMasters, O. D.; Carlson, O. N., J. Less-Common Met., 26 (1972) , 53．
2 Spedding, F. H.; Daane, A. H., The Rare-Eaths, Wiley, New York, 1961．
3 Hohnke, D.; Parthe, E., Acta Crystallogr., 20 (1966) , 572．
4 Tharp, A. G.; Smith, G. S.; Johnson, Q., ibid., 20 (1966) , 583．
5 Donnay, J. D. H.; Ondik, H. M., Crystal Data Determinate Tables, 3rd ed. Vol. 2 NSRDS, U. S. A., 1973, I-45 or H-114．i |
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