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| Research progress of pressureless sintered SiC ceramics |
| WANG Kun，FENG Rong，YANG Shangquan，CHENG Longsheng，MENG Fanran，
ZHANG Aili |
| Shanxi Sciences Institute of Glass & Ceramics (Co., Ltd.),Taiyuan 030013, China |
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Abstract Properties such as high hardness, high intensity, corrosion resistance, abrasion resistance and high elastic
modulus have made SiC ceramics become the indispensable material for aerospace, power electronics and mechanical
industry. However, disadvantages such as high synthesis temperature and low sinterability, have limited
the fabrication of these ceramics. In recent years, with the deep research of SiC ceramics’sintering mechanism and
the diversification of additives, the preparation of high- performance SiC ceramics by pressureless sintering has
gradually become the most commonly used method. This paper introduced the research progress of additives in
pressureless sintering SiC technology in recent years, and summarized the effects of additives and dosage, sintering
temperature and time on the performance of sintering SiC ceramics.
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Received: 27 May 2020
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2022, Vol. 32 
