DISCUSSION OF ON THE FREE-ENERGY OF FORMATION OF TIC AND AL4C3

被引：48

作者：

FINE, ME

CONLEY, JG

机构：

[1] Department of Materials Science and Engineering, Materials Research Center, Northwestern University, Evanston, 60208-3108, IL

[2] Research and Development Center, Ryobi Limited, Tokyo, 114, 5-2-8 Toshima, Kita-ku

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1990年 / 21卷 / 09期

关键词：

D O I：

10.1007/BF02647010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several years ago, Banerji and Reif[1] reported some very interesting studies on a process to react Ti and C in molten Al to form particles of TiC. The process was used to prepare a master alloy with a fine dispersion of TiC to inoculate Al for grain refinement. Approximately 2 wt pct of preheated graphite particles were stirred into the Al-5 to 10 pct Ti melts. The authors explained that the melts needed to be superheated above 1000 °C to avoid the undesirable formation of A14C3 and Ti3AlC at the TiC/melt interface. Their explanation for this phenomenon was based on thermodynamics. They observed that the standard free energy of formation curves for AI4C3 and TiC cross near 1175 °C, with A14C3 having the lower free energy of formation below this temperature. There are several aspects of this work which merit further discussion. © 1990 The Metallurgical of Society of AIME.

引用

页码：2609 / 2610

页数：2