Study on Phase Transformation and Microstructure Development of Yb α-SiAlON Ceramics Prepared by Pressureless Sintering

G.H. Liu; Ke Xin Chen; He Ping Zhou; José Maria F. Ferreira

doi:10.4028/www.scientific.net/MSF.475-479.1271

Paper Titles

Joining of SiC Ceramic with Ternary Carbide Ti₃SiC₂
p.1255

Self-Lubricant Effect of Tri-Oxidizing Layer in Surface of Bulk Ti₃SiC₂ Materials
p.1259

Effect of Different Abrasive Particle Hardness on the Erosion Resistant Performance of α-Al₂O₃ Ceramics
p.1263

Joining of C_f/SiC Ceramic Matrix Composite Using SiC-Si₃N₄ Preceramic Polymer
p.1267

Study on Phase Transformation and Microstructure Development of Yb α-SiAlON Ceramics Prepared by Pressureless Sintering
p.1271

Laminated Fabrication Ceramics by Aqueous Tape Casting Technology
p.1275

Study on Thermal Conductivity of SPS-Sintered Si₃N₄ Ceramics after Heat-Treatment
p.1279

Study on the Oxidation Behavior of Ca-α-SiAlON in an Air Stream
p.1283

Three-Dimensional Simulation of Sintering of Ceramics
p.1287

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Study on Phase Transformation and Microstructure Development of Yb α-SiAlON Ceramics Prepared by Pressureless Sintering

Abstract:

In this paper, single-phase Yb α-SiAlON ceramics were prepared by pressureless sintering and the densification, phase transformation as well as microstructure development were studied. It was demonstrated that the phase transformation could be completed at 1700 °C and elevated temperature was beneficial to grain growth. Additionally, effect of the addition of seed crystals prepared by combustion synthesis was discussed. From the experimental results, it was found that the added seed crystals facilitated the phase transformation and improved the microstructure development, resulting in the formation of elongated grains.