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Effect of Composite Binder on the Property of Lightweight Bubble Alumina Ceramics
Author(s) -
Wang Jiabang,
Tian Feng,
Chen Huxing
Publication year - 2011
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2011.02657.x
Subject(s) - materials science , phosphoric acid , composite number , sintering , ceramic , bubble , composite material , aluminium , sulfate , ammonium phosphate , metallurgy , fertilizer , parallel computing , computer science , chemistry , organic chemistry
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‐Al 2 O 3 fines as raw materials, phosphoric acid (H 3 PO 4 ) and aluminum ammonium sulfate (NH 4 Al(SO 4 ) 2 ·12H 2 O) as binders. During sintering, most phosphoric acid react with aluminum ammonium sulfate and the rest react with bubble alumina and α‐Al 2 O 3 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