作者：A. Borovsky, Chr. Parr, J.-M.Auvray, H. Fryda

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刊名：refractories worldforum

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出版年：2013-06-01

卷：5

期：2

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语种：英文

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内容简介

Castable developments for steel ladles during the last three decades have been based around alumina-spinel and alumina-magnesia systems, which are often denominated as "preformed" spinel castables and "in-situ" castables, respectively. It has been shown that changing the microstructure of ladle castables can lead to improved resistance to corrosion. One approach to achieve this, has been the recent development of a novel Calcium Magnesium Aluminate (CMA) cement. This paper presents an analysis of corroded samples through optical and SEM image analysis. The investigation by microscopy gives a correlation between the thermomechanical properties from phase and particle distributions, microstructural features and glassy phases of the castables with corrosion mechanisms. Conclusions are drawn, from the established hypothesis, as to the supposed mechanism of corrosion and ways in which corrosion resistance using this novel CMA binder can be further optimised through formulation control. Thus, leading to the belief that monolithic refractories can be considered in constant evolution.