The system Ta-V-Si: Crystal structure and phase equilibria

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	The system Ta-V-Si: Crystal structure and phase equilibria
	A. U. Khan; P. Broz; H. Y. Niu; J. Bursik; A. Grytsiv; X. Q. Chen; G. Giester; P. Rogl
	2012
发表期刊	Journal of Solid State Chemistry
ISSN	0022-4596
卷号	187 页码:114-123
摘要	Phase relations have been evaluated for the Ta-V-Si system at 1500 and 1200 degrees C. Three ternary phases were found: tau(1)-(Ta,V)(5)Si-3 (Mn5Si3-type), tau(2)-Ta(Ta,V,Si)(2) (MgZn2-type) and tau(3)-Ta(Ta,V,Si)(2) (MgCu2-type). The crystal structure of tau(2)-Ta(Ta,V,Si)(2) was solved by X-ray single crystal diffraction (space group P6(3)/mmc). Atom order in the crystal structures of tau(1)-(Ta,V)(5)Si-3 (Mn5Si3 type) and tau(3)-Ta(Ta,V,Si)(2) was derived from X-ray powder diffraction data. A large homogeneity range was found for tau(1)-(TaxV1-x)(5)Si-3 revealing random exchange of Ta and V at a constant Si content. At 1500 degrees C, the end points of the tau(1)-phase solution (0.082 <= x <= 0.624) are in equilibrium with the solutions (Ta1-xVx)(5)Si-3 (Cr5B3 type, 0 <= x <= 0.128) and (TaxV1-x)(5)Si-3 (W5Si3 type, 0 <= x <= 0.048). (C) 2011 Elsevier Inc. All rights reserved.
部门归属	[khan, a. u.; grytsiv, a.; rogl, p.] univ vienna, inst phys chem, a-1090 vienna, austria. [broz, p.] masaryk univ, dept chem, cs-61137 brno, czech republic. [broz, p.] masaryk univ, cent european inst technol, ceitec, brno 62500, czech republic. [niu, h. y.; chen, x. -q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang, peoples r china. [bursik, j.] acad sci czech republic, inst phys mat, brno 61662, czech republic. [giester, g.] univ vienna, inst mineral & crystallog, a-1090 vienna, austria.;rogl, p (reprint author), univ vienna, inst phys chem, wahringerstr 42, a-1090 vienna, austria.;peter.franz.rogl@univie.ac.at
关键词	Ternary Alloy System Microstructure Phase Diagram Crystal Structures V6si5
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60032
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	A. U. Khan,P. Broz,H. Y. Niu,et al. The system Ta-V-Si: Crystal structure and phase equilibria[J]. Journal of Solid State Chemistry,2012,187:114-123.
APA	A. U. Khan.,P. Broz.,H. Y. Niu.,J. Bursik.,A. Grytsiv.,...&P. Rogl.(2012).The system Ta-V-Si: Crystal structure and phase equilibria.Journal of Solid State Chemistry,187,114-123.
MLA	A. U. Khan,et al."The system Ta-V-Si: Crystal structure and phase equilibria".Journal of Solid State Chemistry 187(2012):114-123.