基于直写3D打印的级配SiC陶瓷浆料颗粒分布研究
Study on Particle Distribution of Graded SiC Ceramic Slurry based on Direct Ink Writing 3D Printing
- 2026年56卷第3期 页码:67-72
收稿:2026-01-18,
修回:2026-02-08,
纸质出版:2026-03-20
DOI: 10.7512/j.issn.1001-2303.2026.03.09
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收稿:2026-01-18,
修回:2026-02-08,
纸质出版:2026-03-20
移动端阅览
将直写3D打印应用于SiC制备是突破SiC传统加工困难和应用受限的有效途径。在直写3D打印过程中,不同直径喷嘴会导致挤出丝内的SiC颗粒分布发生一定程度变化,这种改变会显著影响最终SiC试样的孔隙分布,继而导致后续致密化效果产生差异。本文研究了级配SiC颗粒在直写3D打印挤出过程中的分布规律,通过试验与数值模拟,对级配SiC浆料在挤出过程中的颗粒分布规律与作用机理展开研究和分析。结果表明:喷嘴中心区域的剪切速率变化是导致级配颗粒分布发生改变的主要原因,喷嘴直径为800 μm和1 mm时,喷嘴中心区域剪切速率变化率超过80%,此时粗颗粒所受曳力较大,可以有效抵消剪切速率变化率带来的影响,而细颗粒曳力相对较小,在剪切应力差的作用下朝挤出丝芯部聚拢;当喷嘴直径为500 μm和600 μm时,喷嘴中心区域的剪切速率变化率小于50%,剪切应力差减少,使得挤出丝中的SiC颗粒分布更为均匀。
Direct ink writing (DIW) 3D printing with its high design flexibility and rapid manufacturing capabilities
offers an effective way to overcome the difficulties and application limitations of traditional processing methods for SiC. During the DIW process
nozzles with different diameters can induce variations in the distribution of SiC particles within the extruded filaments. These variations significantly affect the pore distribution in the fina1 SiC samples
thereby influencing the subsequent densification outcomes. This study investigates the distribution rule of graded SiC particles in direct ink writing 3D printing extrusion process through experiments and numerical simulations. The results indicate that the variation in shear rate at the nozzle's central region is the primary factor influencing the distribution of graded particles. When nozzle diameters are 800 μm and 1 mm
the shear rate variation in the central region exceeds 80%
and the drag force on coarse particles is sufficient to counteract the effects of shear rate variation. In contrast
for nozzle diameters of 500 μm and 600 μm
the shear rate variation in the central region is less than 50%
reducing the shear stress difference and resulting in a more uniform distribution of SiC particles in the extruded filaments.
姜永亮 , 冻瑞岚 , 李阳 , 等 . 陶瓷基复合材料增材制造工艺研究进展 [J/OL]. 中国机械工程 , 2026 : 1 - 24 [ 2026-01-18 ]. https://link.cnki.net/urlid/42.1294.TH.20260104.1105.002 https://link.cnki.net/urlid/42.1294.TH.20260104.1105.002 .
JIANG Y L , DONG R L , LI Y , et al . Research progress on additive manufacturing processes for ceramic matrix composites [J/OL]. China Mechanical Engineering , 2026 , 1 - 24 [ 2026-01-18 ]. https://link.cnki.net/urlid/42.1294.TH.20260104.1105.002 https://link.cnki.net/urlid/42.1294.TH.20260104.1105.002 .
石浩江 , 李权 , 孙永铎 , 等 . SiC f /SiC复合材料在核能领域应用设计的历史回顾、挑战及发展 [J]. 复合材料学报 , 2025 , 42 ( 11 ): 6130 - 6151 .
SHI H J , LI Q , SUN Y D , et al . Historical review,challenges and development of SiC f /SiC composite for nuclear applications [J]. Acta Materiae Compositae Sinica , 2025 , 42 ( 11 ): 6130 - 6151 .
陈张伟 , 屈飘 , 季泽宇 . 增材制造SiC基陶瓷及其强韧化研究进展 [J]. 航空制造技术 , 2025 , 68 ( 08 ): 26 - 43 .
CHEN Z W , QU P , JI Z Y . Research Progress on Additive Manufacturing for SiC-Based Ceramics and Its Strengthening and Toughening [J]. Aeronautical Manufacturing Technology , 2025 , 68 ( 08 ): 26 - 43 .
殷杰 , 耿佳毅 , 王康龙 , 等 . SiC陶瓷的3D打印成形与致密化新进展 [J]. 无机材料学报 , 2025 , 40 ( 03 ): 245 - 255 .
YIN J , GENG J Y , WANG K L , et al . Recent Advances in 3D Printing and Densification of SiC Ceramics [J]. Journal of Inorganic Materials , 2025 , 40 ( 03 ): 245 - 255 .
杨勇 , 郭啸天 , 唐杰 , 等 . 非氧化物陶瓷光固化增材制造研究进展及展望 [J]. 无机材料学报 , 2022 , 37 ( 03 ): 267 - 277 .
YANG Y , GUO X T , TANG J , et al . Research Progress and Prospects of Non-oxide Ceramic in Stereolithography Additive Manufacturing [J]. Journal of Inorganic Materials , 2022 , 37 ( 03 ): 267 - 277 .
ISO/ASTM 52900-2021 , Additive manufacturing - General principles -Fundamentals and vocabulary [S].
Rau D A , Williams C B , Bortner M J . Rheology and printability:A survey of critical relationships for direct ink write materials design [J]. Progress in Materials Science , 2023 , 140 : 101188 .
Li S , Lu Z , Zhang H , et al . Rheological behavior of multi-sized SiC inks containing polyelectrolyte complexes specifically for direct ink writing [J]. Journal of the European Ceramic Society , 2022 , 42 ( 12 ): 4810 - 4816 .
Wei P R , Cipriani C , Hsieh C M , et al . Go with the flow:Rheological requirements for direct ink write printability [J]. Journal of Applied Physics , 2023 , 134 ( 10 ): 100701 .
Thakur A K , Kumar R , Banerjee N , et al . Hydrodynamic modeling of liquid-solid flow in polyolefin slurry reactors using CFD techniques-A critical analysis [J]. Powder Technology , 2022 , 405 : 117544 .
Goh G L , Agarwala S , Yeong W Y . Directed and on-demand alignment of carbon nanotube:A review toward 3D Printing of Electronics [J]. Advanced Materials Interfaces , 2019 , 6 ( 4 ): 1801318 .
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