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The use of MgO-coated SiC powders as low temperature densification materials

Lookup NU author(s): Dr Zafer Tatli, Emeritus Professor Derek Thompson

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Abstract

The densification of silicon carbide powders at relatively low temperatures (i.e. 1900 °C and below) has been investigated as a means of lowering the cost of the production route for dense silicon carbide components. The work has concentrated on the use of MgO, as a coating on α-SiC powder deposited by chemical methods to allow densification by a liquid phase mechanism. Samples of SiC containing additions of MgO, both alone and as a coating on the surface of the SiC powder have been either hot pressed at temperatures between 1500 and 1750 °C or pressureless sintered at temperatures up to 1750 °C. Densification of the MgO-coated powder was observed to take place below 1650 °C and in certain cases a considerable amount of densification had taken place at temperature as low as ∼1450 °C. © 2006 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Tatli Z, Thompson DP

Publication type: Article

Publication status: Published

Journal: Journal of the European Ceramic Society

Year: 2007

Volume: 27

Issue: 2-3

Pages: 1313-1317

Print publication date: 01/01/2007

ISSN (print): 0955-2219

ISSN (electronic): 1873-619X

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.056

DOI: 10.1016/j.jeurceramsoc.2006.04.056

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