影响ZTA陶瓷微波烧结的主要工艺过程  

Processes Affecting Microwave Sintering of ZTA Ceramics

作　　者：张锐[1] 符水龙[1] 卢红霞[1] 许红亮[1] 韩东方 郑隆烈[2] 

机构地区：[1]郑州工业大学材料科学与工程系,郑州450002 [2]清华大学材料科学与工程系,北京100084

出　　处：《无机材料学报》2001年第1期178-182,共5页Journal of Inorganic Materials

基　　金：清华大学新型陶瓷与精细工艺国家重点实验室开放基金!(X.GZ9910);河南省模具;材料工程及装备重点实验室基金资助

摘　　要：通过对ＺＴＡ陶瓷进行微波烧结试验，了解影响陶瓷微波烧结速率的主要工艺过程，探索有关微波烧结机理；采用以ＴＥ４４４为基准模式的微波谐振腔，在混合加热模式的基础上增设辅助加热体，实现了ＺＴＡ陶瓷微波烧结； ＺＴＡ材料中ＺｒＯ２含量越高，该材料的烧结速率越快；输入功率的提高有助于提高烧结速率；辅助加热体的老化现象降低微波烧结速率；微波烧结过程中应避免出现热剧变现象．The Al2O3-ZrO2 system was chosen to be fabricated by microwave sintering. The principal processes affecting the sintering rate were analysed on account of the properties of ZTA ceramics. The TE444 multi-mode microwave system was designed and a hybrid heating system was developed with well arranged aided heaters. The ZrO2 content in ZTA samples affected the microwave sintering rate, which showed the probability for the low-loss materials to be sintered by microwave process mixed with high-loss materials to raise their sintering rate. The increase of the inlet power made the temperature raise rapidly. The aging phenomena of the aided heaters lowered the sintering rate and the thermal runaway should be avoided to advance the sample properties.

关 键 词：微波烧结 烧结速率 ZTA陶瓷 材料类型 

分 类 号：TQ174.758[化学工程—陶瓷工业]