In-Situ Nitridation Synthesis of TiN-Al2O3 Composite Nanopowders

Abstract

Abstract: Nano TiN-Al₂O₃ composite powders were prepared by in-situ nitridation using nano TiO₂-Al₂O₃powders prepared by a coprecipitation method as starting
material. The nitridation conditions and mechanism were calculated and analyzed by using thermodynamic principle. The effect of nitridation reaction conditions
on nitridation reaction was studied. Experimental results show that the nitridation reaction begins at 700℃ and completes at 900℃ for 5h. TEM
micrographs show that nano TiN particles are dispersed into Al₂O₃ matrix. The size of nano TiN particles is about 50～70nm.

Key words: titanium nitride, alumina, In-Situ nitridation, nanopowders

CLC Number:

TQ174

LI Jing-Guo,GAO Lian,GUO Jing-Kun. In-Situ Nitridation Synthesis of TiN-Al₂O₃ Composite Nanopowders[J]. Journal of Inorganic Materials.

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In-Situ Nitridation Synthesis of TiN-Al₂O₃ Composite Nanopowders

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