Effect of Composite Binder on the Property of Lightweight Bubble Alumina Ceramics

The effect of composite binder on the mechanical property of lightweight bubble alumina ceramics was studied. The ceramics were prepared using bubble alumina and α‐Al2O3 fines as raw materials, phosphoric acid (H3PO4) and aluminum ammonium sulfate (NH4Al(SO4)2·12H2O) as binders. During sintering, mo...

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Published inInternational journal of applied ceramic technology Vol. 9; no. 2; pp. 393 - 400
Main Authors Wang, Jiabang, Tian, Feng, Chen, Huxing
Format Journal Article
LanguageEnglish
Published Malden, USA Blackwell Publishing Inc 01.03.2012
Subjects
Aluminum
Aluminum oxide
Binders
Bonding
Bubbles
Ceramics
Mechanical properties
Weight reduction
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Summary:The effect of composite binder on the mechanical property of lightweight bubble alumina ceramics was studied. The ceramics were prepared using bubble alumina and α‐Al2O3 fines as raw materials, phosphoric acid (H3PO4) and aluminum ammonium sulfate (NH4Al(SO4)2·12H2O) as binders. During sintering, most phosphoric acid react with aluminum ammonium sulfate and the rest react with bubble alumina and α‐Al2O3 fines, forming aluminum phosphate on the surface of the alumina particles, which effectively improves the sintering process. The mechanical property of the ceramic bonded by composite binder was greatly improved compared with that bonded by single binder
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ISSN:1546-542X
1744-7402
DOI:10.1111/j.1744-7402.2011.02657.x