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学 术 报 告
2017-10-23 10:27  

报告题目:Silicon nitride based ceramics - fantastic diversity of their application

报 告 人:Prof. Pavol Šajgalík, Slovak Academy of Sciences

          斯洛伐克科学院院长,欧洲陶瓷协会主席

主 持 人:张程煜 副教授

地    点:材料学院公字楼334会议室

报告时间:2017年10月24日(星期二)下午15:00

报告摘要:Silicon nitride (Si3N4) is an interesting compound, with the covalently bonded elements and thus it is characterized by high hardness, strength and chemical stability. Single crystals of silicon nitride are not easy to fabricate in the dimensions suitable for the practical use thus the polycrystalline silicon nitride based ceramics of large variety of shapes and purposes of application are produced.  The variety of properties of silicon nitride ceramics reflects large spectra different possible applications. When in eighties of the last century was silicon nitride investigated as a material for engineering applications, today is also used a phosphor enabling to transfer the monochromatic light of the LED to the visible light and more and more as an bio-active material for implants in the human body. In the present paper the different methods of the structure manipulation will be presented with respect to the final use in the real praxis.

 

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