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《Journal of University of Science and Technology Beijing》 2002-06
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In-situ Toughening Multi-phase β-Si_3N_4/α-Sialon Ceramics

WU Anhua, GE Changchun Laboratory of Special Ceramics and P/M, UST Beijing, Beijing 100083, China  
The densification behavior, phase composition, mechanical properties and microstructure of hot-pressed multi-phase β-Si3N4/α-Sialon ceramics were studied by XRD, mechanical measurements andSEM. The results indicated that the multi-phase β-Si3N4/α-Sialon ceramics mix the mechanical properties ofβ-Si3N4 and α-Sialon, the phase composition and mechanical properties can be tailored by adjusting the composition of start powders. Compared with a-Sialon ceramics, the strength and toughness of the multi-phase β-Si3N4/α-Sialon ceramics are increased by in-situ toughness because of adding the β-Si3N4 phase with a highaspect ratio.
【Fund】: 中奥政府间科技合作基金项目资助(V.B.3)
【CateGory Index】: TQ174
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