Chemical interaction of Sr<inf>4</inf>Al<inf>6</inf>O<inf>12</inf>SO<inf>4</inf>with liquid aluminum alloys

José Amparo Rodríguez-García, Enrique Rocha-Rangel, José Manuel Almanza Robles, Jesús Torres Torres, Ana Lilia Leal Cruz, Guillermo T. Munive

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The Sr4Al6O12SO4compound was synthesized by a solid state reaction from a stoichiometric molar mixture of SrCO3, Al2O3and SrSO4. The process of the formation was followed using DTA, TGA, XRD and SEM analyses. In order to study the interaction of this compound with liquid aluminum alloys, the samples were immersed in liquid aluminum. During the synthesis, it was found the formation of two transitory phases, Sr3Al2O6and SrAl2O4, between 900 and 1100°C. The strontium sulphoaluminate start to form around 900°C and it was completely formed at 1150°C. The Sr4Al6O12SO4showed a slightly interaction with Al-Si alloy, with the formation of layer of alumina (less than 200μm), on the other hand, there was no interaction of this compound with Al-Mg alloy. The sulphoaluminate showed excellent corrosion resistance to aluminum alloys.
Original languageAmerican English
Title of host publicationChemical interaction of Sr4Al6O12SO4with liquid aluminum alloys
Pages21-27
Number of pages7
ISBN (Electronic)9781118273364
StatePublished - 1 Jan 2012
EventCeramic Transactions -
Duration: 1 Jan 2012 → …

Publication series

NameCeramic Transactions
Volume234
ISSN (Print)1042-1122

Conference

ConferenceCeramic Transactions
Period1/01/12 → …

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