Aluminum nitride (AlN) was synthesized at 1000‐1400°C from a mixture of alumina and carbon powders using 2.45 GHz microwaves in a N₂ atmosphere. High nitridation ratios (>0.90) were obtained in the temperature range 1200‐1400°C. The apparent activation energy of the carbothermal reduction and nitridation (CRN) reaction using 2.45 GHz microwave irradiation was calculated from the nitridation ratio. The value obtained, 79.9 kJ/mol, is 11% of the energy reported for conventional synthesis using α‐Al₂O₃ as the raw material. This result indicates that 2.45 GHz microwave irradiation could promote the kinetics of the CRN reaction, and AlN could be effectively synthesized at low temperature.

中文翻译：

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低温碳热还原氮化氮化微波合成AlN的动力学

氮化铝（AlN）是在N ₂气氛中使用2.45 GHz微波在1000-1400°C下由氧化铝和碳粉的混合物合成的。在1200-1400°C的温度范围内获得了很高的氮化率（> 0.90）。由氮化率计算出使用2.45 GHz微波辐射的碳热还原和氮化（CRN）反应的表观活化能。所获得的值，79.9千焦/摩尔，是能量的11％的人报告了使用的α-Al常规合成₂ ö ₃作为原料。该结果表明2.45GHz微波辐射可以促进CRN反应的动力学，并且可以在低温下有效地合成AlN。