铝热还原法合成AlON粉体及其热力学分析

来源 :第十五届全国高技术陶瓷学术年会 | 被引量 : 0次 | 上传用户:tsy99
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  以微米级的Al粉和纳米级Al2O3粉为原料,在N2气氛下,通过铝热还原法,进行了AlON粉体的合成。实验表明,在1873~1923 K之间,AlON相开始形成,到2023 K时得到纯相AlON粉体。通过拟抛物线规则计算得到AlON的摩尔生成吉布斯能,进而算得AlON相形成的转变温度为1887 K。热力学分析表明,铝热还原法合成AlON过程中,各物相易受气氛、温度的影响而表现出不同的热力学行为,进而影响合成的纯相AlON的固溶组分。实验结果与理论计算分析相符合。
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