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Control of Microstructures in α-SiAlON Ceramics |
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| Authors: | Wei-wu Chen Wei-ying Sun Pei-ling Wang Ya-wen Li Yi-Bing Cheng Dong-sheng Yan |
| Affiliation: | The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Shanghai 200050, People's Republic of China;Department of Materials Engineering, Monash University, Clayton, Victoria, 3168, Australia |
| Abstract: | The effects of sintering cycles and doping elements on the microstructures of Ln-α-sialon were studied. The results showed that microstructures with an elongated α-sialon morphology could be obtained through high-temperature post-heat treatment (1800–1900°C) or by prolonging soaking times during sintering. Different rare-earth elements had a profound effect on the microstructure of the resulting α-sialon. The Ln-α-sialon doped with low- Z -value elements could easily develop elongated grains with higher aspect ratio. |
| Keywords: | microstructure SiAlON |