高比表面积3YSZ粉体注射成型工艺参数优化及制品力学性能  

Optimization of injection molding parameters of 3YSZ ceramic powder with high specific surface area and study on mechanical properties of the products

作　　者：高雄 张永和[1] 包金小 王青春[1] 阮飞[1] 李阳 毛大伟 宋希文[1] GAO Xiong;ZHANG Yonghe;BAO Jinxiao;WANG Qingchun;RUAN Fei;LI Yang;MAO Dawei;SONG Xiwen(Materials and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2024年第1期20-25,共6页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金(51864038);内蒙古自治区青年科技英才计划(NJYT-19-A20);内蒙古自然科学基金(2021MS02022)。

摘　　要：为解决高比表面积的3YSZ陶瓷粉末难以应用于注射成型工艺的问题,以比表面积为18 m^(2)/g的3YSZ陶瓷粉末为原料,以生坯质量为正交试验的评价标准,优化得到了最优注射参数,并对烧结制品的力学性能进行了研究。结果表明:参数影响力的顺序为注射压力>保压时间>注射速度>注射温度,适用于该粉体的最优注射参数为注射温度165℃,注射压力110 kg,注射速度为85 g/s,在70 kg下保压1 s。将使用该工艺得到的生坯脱脂后,于1350℃下烧结即可得到相对密度为98.5%,维氏硬度为13.42 GPa,断裂韧性为6.47 MPa·m^(1/2)的四方多晶氧化锆陶瓷。3YSZ ceramic powder with high specific surface area is difficult to be applied in injection molding process.In order to solve this problem,3YSZ ceramic powder with a specific surface area of 18 m^(2)/g was used as raw material,and the optimal injection param-eters were optimized by using the green body weight as the evaluation criterion in the orthogonal test,then the mechanical properties of the sintered products were investigated.The results show that the order of influence of the parameters is injection pressure>pressure holding time>injection speed>injection temperature,and the optimal injection parameters for this powder are injection temperature of 165 ℃,injection pressure of 110 kg,injection speed of 85 g/s,and holding pressure for 1 s at 70 kg.The green body acquired by this process was degreased and sintered at 1350℃ to obtain a tetragonal zirconia polycrystal with relative density of 98.5%,Vickers hard-ness of 13.42 CPa,and fracture tughnes of 6.47 MPa·m^(2).

关 键 词：正交试验 粉末比表面积 陶瓷注射成型 3YSZ 

分 类 号：TQ174.75[化学工程—陶瓷工业]