Paper Titles
Effects of Sintering Additives on Properties of Porous Silicon Nitride Ceramics Fabricated by Carbothermal Reduction
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Oxidation and Corrosion of Silicon Nitride at 1200°C and 1500°C
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Synthesis of Rod-Like α-SiAlON by Carbothermal Reduction-Nitridation
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Optimization of α-SiAlON Microstructure by Heat Treatment
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Abrasive Erosion Comparison for a Ceramics and a High Chrome Cast Iron Applied in a Slurry Pump
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Preparation of In Situ Synthesized SiC Particles Reinforced Highly Porous Si3N4 Ceramics by Gel-Casting
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Surface Oxidation of Carbon Fiber and its Influence on the Properties of Carbon Fiber Reinforced BN-Si3N4 Composites
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Sintering Temperature Study of Hot-Pressed Y-SiAlON Ceramics
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Optimization of α-SiAlON Microstructure by Heat Treatment

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Abstract:

Nd-doped α-SiAlON starting composition (Nd0.33Si9.38Al2.62O1.62N14.38) was prepared by gas pressure sintering at 1825°C for 3 hrs. In order to explore the effect of post heat treatment on the developments of elongated α-SiAlON grains, sample was heat treated at 1800°C for 4-12 hrs. It was found that post heat treatments promoted formation of the elongated α-SiAlON grains. The controlling mechanism of grain growth was determined via plotting on a graph the growth in width/length versus time graphics using Image Analysis method. Different growth rates were found between the length and width direction of the α-SiAlON crystals, resulting in anisotropic grain growth in the microstructural development.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

891-893

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.891

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Online since:

February 2008

Authors:

S. Kurama

Keywords:

Heat Treatment, Image Analyze, LSW Theory, ß-SiAlON

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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