Effect of Sintering Aids on the Densification of Andalusite Ceramics

Jian Feng Wu; Hao Cheng; Xiao Hong Xu; Teng Fei Deng

doi:10.4028/www.scientific.net/AMR.842.78

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 842Effect of Sintering Aids on the Densification of...

Effect of Sintering Aids on the Densification of Andalusite Ceramics

Abstract:

The ceramics with large bulk density and high bending strength were fabricated via semi-dry pressing and pressureless sintering in the air. Andalusite and calcined bauxite were used as the raw materials, sintering aids such as potassium feldspar, albite, talc, spodumene and borax were added to promote the densification and decrease the sintering temperature of the samples. The best physical properties were obtained on a sample of optimal composition (the addition of sintering aid was talc) sintered at 1500 °C for 3 h, i.e. a bending strength of 138.52 MPa and bulk density of 2.61gcm^-3, the sintering temperature was lower than sample without addition of sintering aid.

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Periodical:

Advanced Materials Research (Volume 842)

Pages:

78-82

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.842.78

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Online since:

November 2013

Authors:

Jian Feng Wu*, Hao Cheng, Xiao Hong Xu, Teng Fei Deng

Keywords:

Andalusite, Densification, Mullite, Sintering Aid

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