采用微米级Al粉和纳米级Al2O3粉为原料,在N2气氛保护下球磨,并在流动N2中煅烧,尝试了纯相ALON粉体的合成.通过改变合成温度和保温时间等工艺参数,使原料反应充分,并通过适当改变原料中Al的含量,以控制合成试样中过量AlN的产生.同时对合成的粉体用XRD进行物相的定性分析,研究了温度、保温时间和原料配比等参数对合成纯相粉体物相的影响,并用TEM对粉体微观形貌进行观察.结果表明,将原料中Al粉的质量比调整为10%后,在1800℃煅烧3 h的条件下,可以得到纯相的ALON粉体.
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