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THE EFFECT OF CRYOLITE NA3ALF6 AND SODIUM FLUORIDE NAF ON THE CORROSION AND WETTING BY MOLTEN AL-SI ALLOY OF ANDALUSITE BASED REFRACTORIES
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نویسنده
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Safabinesh H. ,Arab Fatideh A. ,Navidirad M. ,Ghassemi Kakroudi M.
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منبع
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iranian journal of materials science and engineering - 2014 - دوره : 11 - شماره : 3 - صفحه:75 -82
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چکیده
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In order to improve the corrosion resistance of aluminosilicate refractories by molten aluminum, alkalinefluoride naf and cryolite na3alf6 powders were studied. both physical and chemical properties are known toinfluence wetting and corrosion behavior. this paper devoted to determine the influence of alkaline fluoride andcryolite added to andalusite based castable on the reaction with aluminum alloys. these additives led to the in-situformation of celsian phases within the refractory matrix that led to improved corrosion resistance at 1300°c. phaseanalysis revealed that celsian formation suppressed the formation of mullite within refractories, thereby reducingpenetration.
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کلیدواژه
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Aluminosilicate based refractories ,molten aluminum ,corrosion non-wetting chemical additives
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آدرس
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university of tabriz, ایران, university of tabriz, ایران, university of tabriz, ایران, university of tabriz, ایران
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Authors
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