Thermal shock behavior of Si3N4-TiN nano-composites |
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| Authors: | Chunyan Tian Hai JiangNing Liu |
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| Affiliation: | a Department of Mechanical Engineering, Hefei University, Hefei 230022, Anhui, China
b School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China |
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| Abstract: | Si3N4-TiN nano-composites were fabricated by hot press sintering nano-sized Si3N4 and TiN powders. The microstructure, mechanical properties and thermal shock behavior of Si3N4-TiN nano-composites were investigated. The addition of proper amount TiN particles can significantly increase the flexural strength and the fracture toughness. Si3N4-TiN nano-composites showed both higher critical temperature difference and higher residual strength compared with those of monolithic silicon nitride nano-ceramic when the amount of TiN is less than 15 wt.%. But a further increase in the amount of TiN leaded to a decrease in the thermal shock resistance. |
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| Keywords: | Si3N4 Nano-composites TiN Thermal shock resistance |
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