材料体系和孔隙率梯度增强结构对3D打印氧化铝多孔陶瓷的性能影响  

Effects of Material Systems and Porosity Gradient-Enhanced Structures on Properties of 3D Printed Al_(2)O_(3)Porous Ceramics

作　　者：邹斌[1,2,3,4] 全涛 张广旭 王鑫锋 孙赫武 马贤骅 ZOU Bin;QUAN Tao;ZHANG Guangxu;WANG Xinfeng;SUN Hewu;MA Xianhua(School of Mechanical Engineering,Shandong University,Jinan 250061,China;Key Laboratory of High Effciency and Clean Mechanical Manufacture,Shandong University,Ministry of Education,Jinan 250061,China;National Demonstration Center for Experimental Mechanical Engineering Education,Shandong University.Jinan 250061,China;Additive Manufacturing Research Center,Shandong University,Jinan 250061.China)

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东大学高效洁净机械制造教育部重点实验室,济南250061 [3]山东大学机械基础国家级实验教学示范中心,济南250061 [4]山东大学增材制造研究中心,济南250061

出　　处：《航空制造技术》2025年第3期22-29,共8页Aeronautical Manufacturing Technology

基　　金：国家重点研发计划(2022YFB4601403)。

摘　　要：为了探究水性和油性两种材料体系及孔隙率梯度增强结构对3D打印氧化铝多孔陶瓷性能的影响,使用立体光固化(Stereo lithography apparatus,SLA)3D打印技术制备了具有不同孔密度的氧化铝多孔陶瓷样件。对比分析了两种材料体系下样件的收缩率、压缩强度和微观结构,以及孔隙率梯度增强前后样件的总孔隙率、弯曲性能和热震性能。结果表明,油性材料样件的收缩率和压缩强度高于水性材料,微观结构下油性材料样件的颗粒更为致密,而水性材料样件的颗粒呈球状,相互分离。此外,采用孔隙率梯度增强的设计方法,可以有效避免样件区域断裂现象的发生,且每种样件的弯曲强度均有12%~14%的提升,热震强度也得到14%~18%的提升。使用油性氧化铝陶瓷膏料,并合理设计孔隙率梯度增强结构,为提高氧化铝多孔陶瓷性能及适应更复杂的工业需求提供了有效方法。To investigate the effects of both water-based and oil-based material systems,as well as porosity gradient-enhanced(PGE)structure on the performance of 3D printed AlO,porous ceramics,various ceramic parts with different hole densities were fabricated using stereo lithography apparatus(SLA)3D printing technology.The shrinkage rate,compressive strength,and microstructure of the printed parts in two material systems were comparatively analyzed.Additionally,the porosity,bending performance,and thermal shock resistance of the parts before and after PGE optimization were discussed in detail.The results indicated that the shrinkage and compressive strength of the parts formed by oil-based materials significantly surpassed those of water-based materials,with particles exhibiting a denser microscopic appearance.Nevertheless,the particles of parts formed by water-based materials were in spherical shape,separating from each other.Furthermore,the adoption of PGE structure effectively avoided the occurrence of regional fracture phenomenon in the parts.The PGE parts with different hole densities all achieved a 12%-14%increase in bending strength,as well as a 14%-18%improvement in thermal shock strength.In conclusion,the proper use of oil-based Al,O,ceramic paste along with the rational design of PGE structures are effective approaches to improving the performance of Al_(2)O_(3)porous ceramics,rendering its adaptation to the increasingly complex demands of industrial applications.

关 键 词：立体光固化3D打印 氧化铝 多孔陶瓷 材料体系 孔隙率梯度增强结构 

分 类 号：TQ174.1[化学工程—陶瓷工业] TP391.73[化学工程—硅酸盐工业]