Abstract
The fundamental reaction behavior between aluminum powder and boron nitride (BN) powder was investigated, and a quantitative evaluation of aluminum nitride (AlN) formation was carried out. As a result of differential scanning calorimeter (DSC) analysis, an exothermic reaction between BN and aluminum was detected at temperatures between 1073 and 1173K. The conversion ratio of BN to AlN increased with increasing heating temperature. However, the nitrogen conversion ratio appeared to saturate with a holding time of 3.6 ks at temperatures above 1273K. The nitrogen conversion ratio increased by using 1mm BN powder instead of 10mm BN powder. The effect of using the fine BN powder was significant especially when the heating time was short (<300 s). [doi:10.2320/matertrans.M2011184]
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