Paper Titles
Particle -Reinforced SiAlONs for Cutting Tools
p.129
ZrO2-TiN Composites
p.135
Effect of Fibre Heat-Treatment on Nicalon SiC Fibre Reinforced β-SiAlON Matrix Composites
p.141
Corrosion Resistance of β-SiAlON-Based Ceramics Against Molten Steel
p.147
From Earth Minerals to Nitrides
p.151
The Growth and the Reaction Mechanism of Si3N4 Powder from Silica
p.157
Carbothermal Reduction and Nitridation of Quartz Mineral for the Production of Alpha Silicon Nitride Powders
p.163
Carbothermal Reduction and Nitridation of Çanakkale Origin Kaolin for SiAlON Powder Production
p.169
Transformation Potential of Kalemaden Clay – 220 to Technological Ceramics
p.175

From Earth Minerals to Nitrides

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Abstract:

Structural ceramic parts such as those made from Si3N4 or SiAlONs are promising for considering them in replacing metals in the areas where harsh environmental conditions like abrasive corrosion under high stresses along with high temperature effects are dominant. A widespread use of these ceramics depends on the ease of finding them with low cost. This paper highlights some important points on the low cost production technique of Si3N4 or SiAlON ceramics in powdered form via carbothermal synthesis technique using minerals in the light of the current and previous works. The technique gives flexibility of controlling production parameters that affect on the yield and quality of powders produced. A special account is given to the effects of reactants on the production of such ceramic powders. After synthesising ceramics in powdered form, some comparisons were made on the characterisation of the products of homemade ones with that of commercially available ones. After successful experimental works, a raw material of orthoclase clay mineral exhibited a high transformation potential to a mixture of Si3N4 and SiAlON type ceramic powders.

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Periodical:

Materials Science Forum (Volume 554)

Pages:

151-156

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.554.151

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Online since:

August 2007

Authors:

N. Karakus, A.O. Kurt, O. Toplan

Keywords:

Carbothermal Synthesis, Clay Mineral, Nitridation, ß-SiAlON

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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