Novel Method to Prepare Electroconductive Titanium Nitride–Aluminum Oxide Nanocomposites |
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| Authors: | Jingguo Li Lian Gao Jingkun Guo Dongsheng Yan |
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| Affiliation: | State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics,Chinese Academy of Sciences, Shanghai 200050, People's Republic of China |
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| Abstract: | A novel method for the preparation of TiN–Al2O3nanocomposites was developed. TiN–Al2O3nanocomposite powders were prepared by the direct nitridation of TiO2–Al2O3nanocomposite powders that were derived from the simultaneous hydrolysis of tetra-butyl titanate and precipitation of aluminum nitrate. Dense sintered bodies of these TiN–Al2O3nanocomposite powders were obtained by hot pressing at 1450°–1650°C and 30 MPa for 60 min. The resistivity of nanocomposite reaches a minimum (1.5 × 10−3Ω·cm) at 25 vol% TiN additions. The percolation concentration of nanocomposite is ∼10 vol% TiN. |
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| Keywords: | titanates electrical conductivity nanocomposites |
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