氮化硅光固化增材制造工艺与性能的研究  

Study on Stereo Lithography Additive Manufacturing Process and Properties Silicon Nitride

作　　者：严鹏飞[1,2] 严彪 王联凤[1,4] 程灵钰[4] YAN Pengfei;YAN Biao;WANG Lianfeng;CHENG Lingyu(School of Materials Science and Engineering,Tongji University,Shanghai 201804,China;Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials,Shanghai 201804,China;Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 201100,China;Shanghai Zhichi Intelligent Technology Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]同济大学材料科学与工程学院,上海201804 [2]上海制驰智能科技有限公司,上海201900 [3]上海市金属功能材料开发应用重点实验室,上海201804 [4]上海航天设备制造总厂有限公司,上海201100

出　　处：《有色金属材料与工程》2018年第6期12-15,共4页Nonferrous Metal Materials and Engineering

基　　金：国家军工项目(17-163-13-ZT-010-036-02)

摘　　要：通过设计浆料配方和设置打印参数,采用光固化增材制造(3D打印)的方法制备出氮化硅陶瓷样品。通过热重-差示扫描量热(TG-DSC)分析得到脱脂温度,确定了脱脂预烧结和高温陈化烧结工艺,得到了氮化硅陶瓷样品。试验结果:氮化硅陶瓷样品收缩率为水平方向65.1%,厚度方向80.0%;密度达到理论值的93.3%;抗拉强度为245.9～279.8 MPa,抗弯强度为308.5～333.2MPa。平面方向收缩较大,可能引起了拉伸时的层状撕裂。Stereo lithography additive manufacturing (3D printing) method was used to prepare silicon nitride samples by designing ingredient slurry and setting printing parameter.Degreasing temperature was obtained by thermogravimetry-differential scanning calorimetry(TG-DSC) analysis.Degreasing pre-sintering and high temperature aging sintering processes were determined based on degreasing temperature,which was obtained by TG-DSC analysis.Silicon nitride samples were prepared.The results show that the horizontal and thick shrinkage of silicon nitride samples are 65.1% and 80.0% relatively.The density reaches 93.3% of the theoretical value.Tensile strength is 245.9-279.8 MPa.Bending strength is 308.5-333.2 MPa.Larger contraction in plane direction may cause layered tearing during tension.

关 键 词：增材制造 光固化 陶瓷浆料 3D打印 氮化硅 

分 类 号：TG669[金属学及工艺—金属切削加工及机床]