Paper Title:
Gelcasting of Alumina-Spinel Refractories
  Abstract

The preparation process of alumina-spinel slurries by using micro-sized alumina-spinel mixtures as raw materials was investigated. The slurries with solids content of 62 vol% and viscosity of 0.3 Pa·s were prepared by adding self-made dispersant ANSP which was a mixture of AN-2000 and STP in mass ratio of 4 to 1. The alumina-spinel refractory was fabricated from the slurries by gelcasting process. The dry parts containing micro-sized alumina-spinel powders with 3.57wt% gel have the highest bending strength of 29.8 MPa and 17.6 MPa with 15:1 AM-MBAM and 4:1 MAM-MBAM respectively. The bending strength enhanced with the increase of reaction temperature. For example, to the 15 wt% 15:1 AM-MBAM gel premix, the bending strength of the parts gelled at 25°C and 55°C were 27.3 MPa and 32.4 MPa respectively. The bending strength also increased with the rising of the amount of monomer.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
1149-1151
DOI
10.4028/www.scientific.net/KEM.368-372.1149
Citation
K. Q. Liu, W. Pan, Z. K. Fan, Y. F. Liu, B. J. Wang, "Gelcasting of Alumina-Spinel Refractories", Key Engineering Materials, Vols. 368-372, pp. 1149-1151, 2008
Online since
February 2008
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Price
$32.00
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