摘要
为了能够利用YAG优异的性能开发出更多的功能材料,通过调整无压烧结技术工艺参数成功制备YAG多孔陶瓷材料。结果表明:1500℃烧结的YAG多孔陶瓷的气孔率与1550℃烧结的陶瓷相近,但是1550℃制备的陶瓷具有较多烧结颈使抗压强度较高。保温2 h的样品与保温1 h的样品进行对比表明,保温2 h样品包裹气泡长大使气孔率高,液相较多颗粒联接牢固使抗压强度高。升温速度为5℃/min制备的陶瓷比升温方式10℃/min制备的陶瓷气孔率和抗压强度都高。在800℃排碳所制备的样品的气孔率和抗压强度都比1000℃排碳的高。通过分析工艺参数与性能之间的内在联系,得出烧结温度为1550℃,保温2 h,升温速度为5℃/min,800℃排碳时间1 h制备的YAG多孔陶瓷材料较为适合,其材料气孔率为59.4%,抗压强度为8.55 MPa。
In order to obtain more function materials sorts using the excellent properties of YAG,the YAG porous ceramics were successfully prepared by pressureless sintering method.The results show that the porosity of YAG porous ceramics sintered at 1500 ℃ is similar with that of YAG porous ceramics sintered at 1550 ℃,however,the compressive strength of YAG porous ceramics sintered at 1550℃ with more sintered necks is higher than that of YAG porous ceramics sintered at 1500 ℃.The porosity and the compressive strength of YAG porous ceramics sintered with holding time of 2 h are higher than that of YAG porous ceramics sintered with holding time of 1 h.The porosity and the compressive strength of YAG porous ceramics sintered with heating rate of 5 ℃ /min are higher than that of YAG porous ceramics sintered with heating rate of 10 ℃ /min.The porosity and the compressive strength of YAG porous ceramics sintered with removing carbon temperature of 800 ℃ are higher than that of YAG porous ceramics sintered with removing carbon temperature of1000 ℃.The suitable technology is sintering at 1550 ℃,holding for 2 h,heating rate of 5 ℃ /min and removing carbon at 800 ℃,the porosity and the compressive strength of YAG porous ceramics are 59.4% and 8.55 MPa,respectively.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第S1期8-12,共5页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51202171)
中国博士后科学基金(2013M540611)
江西省教育厅科学技术研究基金(GJJ13720)
江西省"十二五"重点学科(材料加工工程)建设项目
关键词
YAG多孔陶瓷
无压烧结
气孔率
抗压强度
YAG porous ceramics
pressureless sintering method
porosity
compressive strength
