Thermodynamic properties of Ti-Al intermetallics

被引：31
|
作者：
Reddy, RG
Yahya, AM
Brewer, L
机构：
[1] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35487 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 321卷 / 02期
基金：
美国国家科学基金会;
关键词：
Ti-Al alloys; intermetallics; thermodynamics; EMF;
D O I：
10.1016/S0925-8388(01)00972-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Thermodynamic properties of the titanium-aluminum system have been investigated over the entire composition range. X solid-state reversible galvanic cell employing a calcium fluoride (CaF2) solid electrolyte and an Al-CaAlF7 reference electrode was used in the temperature range 820-900 K for solid alloys containing 31.3, 47.9, 64.7, 73.6 and 99.0 atom percent aluminum. Experimental results of the activities of Al in the alloys showed a large negative deviation from ideal behavior. For instance the activity of Al in an alloy with 0.48 atomic fraction of Al was determined to be 2.98x10(-3) at 850 K. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：223 / 227
页数：5
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