Mechanism study on the formation of liquid calcium aluminate inclusion from MgO.Al2O3Spinel

被引：56

作者：

Kang, YoungJo

Li, Fan

Morita, Kazuki

Sichen, Du ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden

[2] Univ Tokyo, Inst Ind Sci, Tokyo, Japan

来源：

STEEL RESEARCH INTERNATIONAL | 2006年 / 77卷 / 11期

关键词：

calcium aluminate; spinel; liquid inclusion; Al deoxiclation; ladle process;

D O I：

10.1002/srin.200606463

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A study on the formation mechanism of liquid calcium aluminate inclusions from MgO center dot Al2O3 spinel was carried out. It was found that spinel reacted with dissolved Ca in liquid steel forming liquid calcium aluminate phase. Stability calculations showed good agreement with the experimental result. According to the thermodynamic calculation, liquid calcium aluminate inclusions would form from spinel even at very low level of dissolved Ca content at 1873 K. At lower temperatures, the compound CaO center dot 2Al(2)O(3) was found to be the stable phase at the spinel-metal interface. Potential sources of dissolved Ca during ladle processes were also discussed.

引用

页码：785 / 792

页数：8

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