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Title

The Mechanism of corrosion of MgO CaZrO3–calcium silicate materials by cement clinker

AuthorsRodríguez-Galicia, José Luis; Aza Moya, Antonio H. de ; Rendón-Angeles, J. C.; Pena, Pilar
Issue Date2007
PublisherElsevier
CitationJournal of the European Ceramic Society 27 (2007) 79–89
AbstractThe chemical reactions involved in the corrosion of MgO CaZrO3–calcium silicate materials by cement clinker were studied using a hot-stage microscope up to 1600 ◦C. The phases formed at 1500 ◦C were characterized by RLOM and SEM–EDS of the crystalline phases conducted near the reaction front and on unreacted refractory area. The general corrosion mechanism of attack on MgO CaZrO3–calcium silicate materials involves a mechanism of matter diffusion of the liquid clinker phase through the grain boundaries and pores into the refractory substrate. The liquid phases in the clinker mainly enriched in calcium, iron and aluminium are rapidly diffused and preferentially react with magnesium spinel, calcium zirconate and magnesia, which are the major constituents in the refractory substrates. The dissolution of the CaZrO3 refractory phase produces the enrichment with zirconium of the liquid phase increasing its viscosity and hindering the liquid phase diffusion. © 2006 Elsevier Ltd. All rights reserved.
Publisher version (URL)doi:10.1016/j.jeurceramsoc.2006.01.014
URIhttp://hdl.handle.net/10261/17383
DOI10.1016/j.jeurceramsoc.2006.01.014
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