Formation of AIN from Secondary Al Resources

材料科学技术（英）, 2006, 22(5): 621-624.

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1.Central Metallurgical Research and Development Institute CMRDI P.O. Box 87 Helwan,Cairo 11421,Egypt

2.Central Metallurgical Research and Development Institute CMRDI P.O. Box 87 Helwan,Cairo 11421,Egypt

3.Central Metallurgical Research and Development Institute CMRDI P.O. Box 87 Helwan,Cairo 11421,Egypt

Formation of AIN from Secondary Al Resources

Keywords： AIN

Synthesis of AIN by NH4Cl-assisted direct nitridation of secondary Al resources was studied. Aluminum alloy scrap contained Mg and Zn element was used. Milled Al scrap(-1 mm)was mixed with NH4Cl and heated at 1000℃ for 1 h in presence of 1 L/min N2 flow gas. The nitridedproduct was evaluated by X-ray diffraction semi-quantitative analysis and scanning electron microscopy(SEM). Aluminium nitride of 90.5% concentration was obtained with a hexagonal crystalline form. AIN is mostly formed in nano-whisker morphology(50～150 nm)which is homogenously distributed.

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Formation of AIN from Secondary Al Resources

参考文献