J.-W. Huang, J. Li, H. Peng
Jun 1, 2007
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Influential Citations
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Journal
Powder Metallurgy
Abstract
Abstract The present study demonstrates that the microwave (MW, 2·45 GHz) synthesis approach can be successfully applied to the preparation of manganese nitride and nitrogen content reaches 7·75 wt-% from metal manganese powder. The effects of preparation condition, such as particle size, synthesis temperature, holding time and flowing gas atmosphere, on the microwave synthesised manganese nitride are demonstrated. The synthesised samples were characterised using scanning electron microscopy, X-ray diffraction and chemical analysis. The results show that microwave synthesis is superior to conventional nitration in reducing the synthesis temperature and holding time, which makes it more useful for industry. The nitration atmosphere is the mixture of 95N2-5H2. The small amount of hydrogen in the nitrification atmosphere accelerates the nitrification of materials and purifies the oxygen impurities.