Thermodynamic parameters of liquid iron tungsten alloys

被引：2
|
作者：
Sudavtsova, VS [1 ]
Vovkotrub, NE [1 ]
Kudin, VG [1 ]
机构：
[1] Taras Shevchenko Kiev Natl Univ, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2001年 / 40卷 / 9-10期
关键词：
thermochemical properties; tungsten activity; liquid alloys;
D O I：
10.1023/A:1014399925680
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The activity, of tungsten in liquid Fe - W alloys has been examined over the concentration range 0.95 <x(Fe) < 1.0 at 1870 K by the electro-motive force (EMF) method in concentration circuits, in which the reference electrode is W - WO2. That activity has very large positive deviations from ideal solution behavior, which decrease as the temperature rises. Calorimetry at 1900 K has given the enthalpies of solution and mixing for iron and tungsten for the composition range 0 <x(W) ≤ 0.1. A small amount of heat is released when the alloys are formed. These characteristics of Fe - W liquids agree with the most reliable published data.
引用
收藏
页码：516 / 518
页数：3
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