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Corrosion of Alumina and Mullite Based Refractories by an Ingot Casting Steel

作者:Jens FRUHSTORFER1Steffen DUDCZIG1Leandro SCHTTLER2Christos G.ANEZIRIS1

作者单位:1. Institute of Ceramic, Glass and Construction Materials, Technische Universitat Bergakademie Freiberg2. Deutsche Edelstahlwerke GmbH

刊名:China’s Refractories

ISSN:1004-4493

出版年:2018-03-15

卷:27

期:1

起页:14-19

止页:

分类号:TG260;TQ175.1

语种:英文

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内容简介

The corrosion of refractory crucibles by a highly corrosive steel(18CrNiMo7-6) with a high aluminum content and casting temperature of 1580℃ was investigated. The tested refractories were alumina,mullite and alumina doped with zirconia and titania( AZT). The samples were decreasingly attacked in the sequence AZT,alumina and mullite with corrosion layers of about 14,6 and 1 mm,respectively. In the alumina and AZT,compositions corresponding to manganese aluminates and subsequently manganese aluminosilicates formed with manganese and silicon from the steel. In the mullite crucible,compositions corresponding to manganese aluminosilicates formed directly with manganese from the steel giving a highly viscous interfacial melt which retarded the further corrosion.

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