无机材料学报2023，Vol.38Issue(12)：1373-1378,6.DOI:10.15541/jim20230216
颗粒级配对黏结剂喷射打印碳化硅陶瓷性能的影响
Effect of Particle Grading on Properties of Silicon Carbide Ceramics by Binder Jetting Printing
摘要
Abstract
Silicon carbide(SiC)ceramics,as a high-performance structural-functional integrated material,are widely used in aerospace,nuclear industry and braking system.However,the conventional fabrication methods can not meet the increasing demands for large-scale and complex-structured SiC ceramics,such as engine nozzles,flaps and turbine blades.Binder jetting(BJ)3D printing technology can overcome the traditional obstacle and provide a novel manufacturing roadmap.Here,we adopted this technique via SiC particle grading,optimized the particle size ratio based on gradation theory,and studied the influence of BJ printing on properties of SiC green body and as-sintered ceramic.For the particle-graded green body after BJ printing,SiC ceramics with a maximum flexural strength of(16.70±0.53)MPa was obtained after one precursor impregnation and pyrolysis(PIP)treatment,whose flexural strength was improved by 116%as compared with that BJ printed from a median diameter of 20 μm.SiC ceramics were further densified using liquid phase siliconization,with the density,flexural strength,elastic modulus,and fracture toughness reaching(2.655±0.001)g/cm3,(285±30)MPa,(243±12)GPa,and(2.54±0.02)MPa·m1/2,respectively.XRD results demonstrated that the sintered SiC ceramics were mainly composed of 3C structured-β-SiC.All results show that high-performance SiC ceramic materials are innovatively prepared by an efficient and reliable method,based on the combined techniques of particle grading,BJ printing,PIP and liquid silicon infiltration.关键词
碳化硅/颗粒级配/黏结剂喷射打印/前驱体浸渍裂解Key words
silicon carbide/particle grading/binder jetting printing/precursor impregnation and pyrolysis分类
化学化工引用本文复制引用
顾薛苏,殷杰,王康龙,崔崇,梅辉,陈忠明,刘学建,黄政仁..颗粒级配对黏结剂喷射打印碳化硅陶瓷性能的影响[J].无机材料学报,2023,38(12):1373-1378,6.基金项目
国家自然科学基金(U22A20129,52073299,52172077) （U22A20129,52073299,52172077）
国家重点研发计划(2022YFB3706300)National Natural Science Foundation of China(U22A20129,52073299,52172077) （2022YFB3706300）
National Key R&D Program of China(2022YFB3706300) （2022YFB3706300）
