摘要
多孔氧化铝陶瓷具有耐高温、耐腐蚀、低热导率等众多优异的性能,在工业隔热领域的需求持续增加。采用数字光处理(DLP)3D打印技术制备了实心点阵和空心点阵2种不同构型的氧化铝陶瓷坯体,在1550℃的最佳烧结温度下保温4 h烧结出性能稳定的氧化铝陶瓷。结果表明,实心点阵比空心点阵具有更大的抗压强度,实心点阵的最大抗压强度为4.80 MPa。空心点阵的最大抗压强度为1.59 MPa。力学测试结果与力学模拟仿真结果具有一致性。DLP技术成形的空心点阵结构氧化铝陶瓷将来可用于工业隔热应用领域。
Porous alumina ceramics have many superior properties,such as high-temperature resistance,corrosion resistance,and low thermal conductivity.Alumina ceramics with solid and hollow lattices were prepared by a digital light processing(DLP)3D printing technique.Stable alumina ceramics were sintered at 1550℃for 4h.The experimental results show that alumina ceramic with the solid lattice has a higher compressive strength rather than that with the hollow lattice,and the maximum compressive strength of alumina ceramic with the solid lattice is 4.80 MPa.The maximum compressive strength of the ceramic with the hollow lattice is 1.59 MPa.The results of mechanical tests are similar to the simulation data.Alumina ceramic with the hollow lattice formed by DLP technique can be used in industrial thermal insulation applications.
作者
孙立君
董鹏
曾勇
陈继民
SUN Lijun;DONG Peng;ZENG Yong;CHEN Jimin(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing,100124,China;Beijing Engineering ResearchCenter of 3D Printing for Digital Medical Health,Beijing,100124,China;Key Laboratory of cross scale laser forming technology,Ministry of education,Beijing 100124,China;Capital aerospace machinery corporation limited,Beijing 100076,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2021年第9期1853-1860,共8页
Journal of The Chinese Ceramic Society
基金
北京市教委科研计划项目资助(KM2020100050003)。
关键词
3D打印
多孔氧化铝
空心结构
力学性能
隔热性能
3D printing
porous alumina
hollow structure
mechanical properties
thermal insulation properties
