采用一种新的技术途径,合成AlON致密陶瓷.在100 MPa高压氮气气氛下,以铝粉、氧化铝为原料,采用燃烧合成热等静压工艺(SHS-HIP),制备出致密的AlON复相陶瓷.采用扫描电子显微镜和X射线衍射研究了产物的相组成、显微组织.研究表明,原料中Al2O3含量对产物形态、相组成及显微组织有着重要影响.当Al2O3含量为10%或20%时,产物具有振荡燃烧明显分层的特征;含量为30%或40%时,产物均匀致密.随着Al2O3含量的提高,产物中自由Al含量降低,AlON和AlN含量提高,产物变得更致密.
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