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铜粉粒径对3D打印成形和烧结成形性能的影响
Effect of Copper Powder Particle Size on 3D Printing Forming and Sintering Forming Properties
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- DOI:
- 作者:
- 周健 唐丹娜 郝亮
ZHOU Jian;TANG Danna;HAO Liang
- 作者单位:
- 中国地质大学（武汉）珠宝学院
Gemological Institute, China University of Geosciences,Wuhan 430074,China
- 关键词:
- 3D打印 浆料成形 金属烧结 颗粒粒径
3D printing paste injection metal sintering particle size
- 摘要:
- 研究了不同粒径Cu粉末对打印成形和烧结成形性能的影响,从浆料稳定性、烧结效果和成形质量3个方面对不同粒径的效果进行评测。利用能谱仪、扫描电子显微镜对烧结后的样品进行微观组织及元素含量进行对比分析,采用热重分析仪分析样品烧结中的变化过程。结果表明,20μm铜粉受内在范德华力的影响更容易发生团聚,导致浆料堆积从而影响打印成形;1μm粉末在烧结后最为致密、整体收缩率最低,成形效果较好。The effects of Cu powder with different particle sizes on the properties of printing and sintering were studied.The effects of different particle sizes were evaluated from three aspects, slurry stability, sintering effect and forming quality.The microstructure and element content of sintered samples were analyzed by EDS and SEM. The process of sample sintering was analyzed by thermogravimetric analyzer. The results show that 20 μm copper powder is more likely to agglomerate under the influence of internal Van der Waals force, resulting in slurry accumulation affecting the printing process. 1 μm powder is densest and has the lowest overall shrinkage after sintering, the forming effect is better.