| Role of β-Si3N4 seeds in microstructure development and properties of silicon nitride ceramics: a comprehensive review |
| Logesh Govindasamy1, Young-Jo Park1, Jae-Woong Ko1, Jae-Wook Lee1, Ho-Jin Ma1, Kundan Kumar2, Ha-Neul Kim1 |
1Korea Institute of Material Science, Engineering Ceramics Department, 797 Changwondaero, Changwon, Gyeongnam, 51508, Republic of Korea
2Indian Institute of Technology (BHU), Department of Ceramic Engineering, Varanasi, 221005, India |
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Received: November 1, 2023; Revised: February 13, 2024 Accepted: March 2, 2024. Published online: May 8, 2024. |
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| ABSTRACT |
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This review examines the influence of β-Si3N4 seeds on the development of silicon nitride ceramics, a material with exceptional mechanical and thermal properties, making it suitable for a wide range of applications, including automotive, space, and semiconductor industries. As technology advances, there is a growing demand for the development of new silicon nitride ceramic materials superior to the existing ones. The driving force for innovation and development resulted in the examination of β-Si3N4 seeds incorporated silicon nitride system. A self-reinforced microstructure with a bimodal grain size distribution must attain the desired properties, and the incorporation of β-Si3N4 seeds is required to achieve this. Hence, β-Si3N4 seeds are crucial for shaping the microstructure of silicon nitride ceramics and, consequently, their properties. This review article aims to highlight the advancement of β-Si3N4 seeds incorporated silicon nitride systems and its impact on the processing parameters, conditions, chemical composition, microstructure, thermal and mechanical properties. These effects demonstrate the multifaceted benefits of incorporating β-Si3N4 seeds, ultimately leading to improve the overall performance of silicon nitride ceramics. This comprehensive review provides a valuable resource for researchers, offering an insightful exploration of the pivotal role of β-seeds in shaping silicon nitride ceramics, consolidating existing knowledge, and highlighting future research avenues. |
| Key words:
Silicon nitride · β-Si3N4 seeds · Microstructure · Thermal conductivity · Mechanical properties |
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