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氨氢比对Fe4N陶瓷粉体合成的影响

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Abstract:

从热力学计算和实验两方面研究气氛对固–气反应法制备Fe4N陶瓷粉体的影响。结果表明通过调控体积比V(NH3)/V(H2)可以在较宽的温度范围内合成纯相的Fe4N粉体,其中,V(NH3)/V(H2)=11时,能够得到纯相Fe4N粉体的温度范围最大,约为500~700℃,而随着氨氢比增大/减小,该温度相应降低/升高,并且温度范围不断减小直至消失。

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