Thermal shock resistant 3D printed ceramics reinforced with MgAl_(2)O_(4) shell structure
作者机构：Shi-changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang 110016China School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Space Manufacturing Technology(CAS Key Lab)Beijing 100094China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2024年第178卷第11期
页 面：100-111页
核心收录：
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
基 金：National Key Research and Development Program of China(No.2017YFA0700704) National Defense Basic Scientific Research Program of China(Grant No.JCKY2022130C005) National Natural Science Foundation of China(No.U22A20129) National Science and Technology Major Project(No.2017-VI-0002–0072) National Key Research and Development Program of China(No.2018YFB1106600) Students’Innovation and Entrepreneurship Foundation of USTC(Nos.CY2022G10 and CY2022C24)
主 题：3D printing Thermal shock resistance Swirl nozzle Flexural strength Ceramic material
摘 要：The demand for the swirl nozzle with enhanced temperature resistance and lightweight properties is in-creasing as the thrust-to-weight ratio of aero-engines *** Al_(2)O_(3) ceramic swirl nozzle can maintain high strength in a hostile environment of high temperature and severe corrosion,while also meeting the requirements of aircraft to enhance efficiency and decrease ***,Al_(2)O_(3) ceramics are limited in their application for aerospace components due to their poor thermal shock resistance(TSR)stemming from their inherent *** work reported an innovative design and fabrication strategy based on photopolymerization 3D printing technology to realize the three-dimensional shell structure through element interdiffusion and nanoscale stacking of the reinforced *** this strategy,a novel type of the new dual-structure Al_(2)O_(3) ceramic composed of MgAl_(2)O_(4) shell structure and matrix could be con-structed in *** nano-sized MgAl_(2)O_(4) caused a crack passivation effect after the thermal shock,which could improve the strength and TSR of 3D-printed Al_(2)O_(3) *** addition,the effects of MgO content and sintering temperature on sintering behavior,flexural strength,porosity,and TSR of Al_(2)O_(3) ceram-ics manufactured by digital light processing(DLP)processing were systematically *** optimum overall performance of Al_(2)O_(3) ceramics was obtained at the sintering temperature of 1550℃and the MgO content of 1.0 wt.%,with a maximum flexural strength of 111.929 MPa and a critical temperature difference of 374.24℃for *** on the above research,an aero-engine swirl nozzle with high ther-mal shock resistance has been successfully prepared by ceramic 3D printing technology,which enhances high-temperature resistance and promotes lightweight design in aero-engine.
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