CARBOTHERMIC REDUCTION OF ILMENITE AND RUTILE AS MEANS OF PRODUCTION OF IRON BASED TI(O,C) METAL MATRIX COMPOSITES

被引：52

作者：

TERRY, BS ^{[1
]}

CHINYAMAKOBVU, O ^{[1
]}

机构：

[1] IMPERIAL COLL SCI TECHNOL & MED,DEPT MAT,LONDON,ENGLAND

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 1991年 / 7卷 / 09期

关键词：

D O I：

10.1179/mst.1991.7.9.842

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An assessment has been made of the viability of producing Fe-Ti(O,C) metal matrix composites by the one step carbothermic reduction of iron-ilmenite and iron-rutile mixtures with coal. Pelletised mixtures of iron, rutile or ilmenite, and collie coal were heated in a tube furnace to temperatures between 1300 and 1600-degrees-C under flowing argon. The microstructures of reacted pellets were examined using optical and scanning electron microscopy and the phases present were characterised by X-ray diffraction. Excellent dispersions of the Ti(O,C) phase in the iron matrix were obtained at temperatures above 1450-degrees-C. The addition of fluxes of group II halides or BaSO4 to the reduction mixture promoted separation of the Ti(O,C) product from the iron. Preliminary experiments on the scale-up of the reduction procedures are reported.

引用

页码：842 / 848

页数：7