【摘要】 本文采用共沉淀法制备了ＹＡＧ－Ａｌ２Ｏ３纳米复合粉体．并通过ＸＲＤ、ＴＥＭ详细研究了粉体组成、形貌随煅烧温度的变化．研究表明，在１３００℃下煅烧可获得ＹＡＧ粒径约１００ｎｍ、分散均匀、无杂相的ＹＡＧ－Ａｌ２Ｏ３纳米复合粉体．粉体在１４５０℃可热压烧结致密，远低于文献报道的热压烧结温度１６００℃．用共沉淀法制备ＹＡＧ－Ａｌ２Ｏ３纳米复合粉体具有成本低、产量高和工艺简单的优点．更多还原

【Abstract】 YAG-Al₂O₃ nanocomposite powders were prepared by the co-precipitation process.The crystallize temperature and morphology of the composite powder was intensively studiedwith XRD and TEM. The results indicate that above 1300℃, there is only YAG and α-Al₂O₃phases existed. YAG particles with an average size of 100 nm can be observed uniformly dispersedin α-Al₂O₃. Using prepared powders, nearly fully dense sintering body can be fabricated byhot-pressing at 1450℃. The sintering temperature is far lower than 1600℃ reported by otherresearchers. The preparation of YAG-Al₂O₃ nanocomposite powders based on the co-precipitationmethod has promising application with merits of low cost, high production and simple processing.更多还原