Ceramic composites toughened by vat photopolymerization 3D printing technology  

作　　者：Qiaolei Li Zhenxue Pan Jingjing Liang Zongbo Zhang Jinguo Li Yizhou Zhou Xiaofeng Sun 

机构地区：[1]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China [2]Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [3]Research/Education Centre for Excellence in Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [4]Space Manufacturing Technology(CAS Key Lab),Beijing 100094,China

出　　处：《Journal of Materials Science & Technology》2023年第15期42-48,共7页材料科学技术（英文版）

基　　金：supported by the Natural Science Foundation of China(No.U22A20129);the National Science and Technology Major Project(No.2017-VI-0002-0072);the National Key Research and Development Program of China(No.2018YFB1106600);the Fundamental Research Funds for the Central Universities(No.WK5290000003);the Students’Innovation and Entrepreneurship Foundation of USTC(Nos.CY2022G10 and CY2022C24)。

摘　　要：High strength and high toughness are mutually exclusive in structural materials.In ceramic materials,increasing toughness usually depends on the introduction of a ductile phase that reduces the strength and high-temperature stability of the material.In this work,vat photopolymerization 3D printing technology was used to achieve toughening of ceramic composite material.The friction sliding of the 3D-printed ceramic macrolayer structure results in effective energy dissipation and redistribution of strain in the whole structure,and macroscale toughening of the ceramic material is realized.In addition,the bridging and elongation of the crack in situ amorphous ceramic whiskers were significant microscopic toughening results,coupled with the toughening of the crack tip of nano-ZrO_(2).Multiscale collaborative toughening methods based on 3D-printed ceramics should find wide applications for materials in service at extreme high temperatures.

关 键 词：Ceramic composites 3D printing Flexure strength Fracture toughness POLYSILAZANE 

分 类 号：TQ174.758.11[化学工程—陶瓷工业] TP391.73[化学工程—硅酸盐工业]