机械合金化和放电等离子烧结制备Y3Al5O12陶瓷

功能材料与器件学报 , 2008, 14(3): 591-596. doi: 10.3969/j.issn.1007-4252.2008.03.006

机械合金化和放电等离子烧结制备Y3Al5O12陶瓷

孟庆新 ^1, , 梁宝岩 ^2, , 李海云 ^3, , 金松哲 ^4, , 苏春晖 ^5,

1.长春理工大学,长春,130022;长春工业大学,长春,130012

2.长春工业大学,长春,130012

3.长春工业大学,长春,130012

4.长春工业大学,长春,130012

5.长春理工大学,长春,130022;吉林工程技术师范学院,长春,130052

基金项目: 高等学校博士学科点专项科研项目(20050186004)

关键词：机械合金化 , 放电等离子烧结 , Y3Al3O12(YAG).

Y3Al5O12 ceramics prepared by mechanical alloying and spark plasma sintering

采用机械合金化和放电等离子烧结制备YAG陶瓷,研究了球磨时间对原料颗粒大小和烧结合成YAG纯度的影响,并利用x射线衍射(XRD)、扫描电镜(SEM)等手段对反应过程及产物形貌和物相进行了分析.研究结果表明,机械合金化Y2O3和Al2O3粉体,可明显细化氧化物颗粒,球磨20h后,Y2O3和Al2O3晶粒大小约为34nm和32nm.球磨处理的Y2O3和Al2O3粉体具有很高的活性,促进放电等离子烧结低温反应合成和获得致密的YAG.对球磨20h的粉体在不同温度进行放电等离子烧结,在1200℃即可获得纯YAG陶瓷,在1500℃烧结,可得到相对密度为99.5%的YAG陶瓷.1500℃烧结的块体在可见光范围内透过率为13.8%.

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机械合金化和放电等离子烧结制备Y3Al5O12陶瓷

Y3Al5O12 ceramics prepared by mechanical alloying and spark plasma sintering

参考文献