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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Bibliographic Details
Published in:International journal of applied ceramic technology 2012-03, Vol.9 (2), p.393-400
Main Authors: Wang, Jiabang, Tian, Feng, Chen, Huxing
Format: Article
Language:English
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
ISSN:1546-542X
1744-7402
DOI:10.1111/j.1744-7402.2011.02657.x