Paper Title:
Low-Temperature Sintering of α- and β-SiC Powders with AlB2 Additive
  Abstract

We sintered α (6H)- and β(3C)-SiC powders using an Al-B-C additive. SiC powders were densified to > 98% of the theoretical density from 1950 to 2150oC with 0.67-2.7 mass % AlB2 and 2.0 mass % C. Sintering temperatures are 150-200 oC lower than the conventional. During sintering, 6H polytype in α-SiC powder was partly transformed to 4H. α-SiC powder grew moderately into plate-shaped grains. β-/SiC powder was completely transformed to 6H and subsequently 4H with large grain growth. Low-temperature sintering enabled us to use hot isostatic pressing resulting in pore-free SiC materials.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
23-26
DOI
10.4028/www.scientific.net/KEM.317-318.23
Citation
H. Tanaka, T. Nishimura, N. Hirosaki, Y. Kishi, H. Matsuo, Y. Ichikawa, "Low-Temperature Sintering of α- and β-SiC Powders with AlB2 Additive", Key Engineering Materials, Vols. 317-318, pp. 23-26, 2006
Online since
August 2006
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Price
$32.00
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