Preparation of Chromium Nitride Nanopowders Using High Pressure Gas-Solid Reaction Bed

Xiao Qi Li; Kai Ming Wang; Shou Shan Gao; Wei Liang Huan; Hong Bao Jia

doi:10.4028/www.scientific.net/MSF.809-810.74

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HomeMaterials Science ForumMaterials Science Forum Vols. 809-810Preparation of Chromium Nitride Nanopowders Using...

Preparation of Chromium Nitride Nanopowders Using High Pressure Gas-Solid Reaction Bed

Abstract:

Chromium nitride (CrN) nanopowders were successfully synthesized in high pressure gas-solid reaction bed with chromium hydroxide as a precursor. A special liquid-phase precipitation method was used to prepare the powders of chromium hydroxide.The aminolysis of chromium hydroxide was carried out for 2-4 hours at temperatures from 650°C to 850°C and at pressures up to 0.8MPa. The effect of the reaction pressure on the grain size and crystalline morphology of CrN powders were characterized by transmission electron microscopy and X-ray diffraction. The results indicate that high purity CrN powders with grain size of 40-60 nm can be obtained through the aminolysis at temperature of 650°C and pressure of 0.6MPa for 2 hours.

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Materials Science Forum (Volumes 809-810)

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74-77

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https://doi.org/10.4028/www.scientific.net/MSF.809-810.74

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Online since:

December 2014

Authors:

Xiao Qi Li, Kai Ming Wang, Shou Shan Gao, Wei Liang Huan, Hong Bao Jia

Keywords:

Aminolysis, CrN Nanopowders, High Pressure Gas-Solid Reaction Bed

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