| 3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent | |
| Li, He1,2; Liu, Yongsheng1,2; Liu, Yansong1,2; Zeng, Qingfeng1; Liang, Jingjing3 | |
| Corresponding Author | Liu, Yongsheng(yongshengliu@nwpu.edu.cn) |
| 2021-04-01 | |
| Source Publication | JOURNAL OF MANUFACTURING PROCESSES
 |
| ISSN | 1526-6125 |
| Volume | 64Pages:1206-1213 |
| Abstract | Stereolithography based-3D printing technology requires ceramic slurries with high solid content and low viscosity to prevent the formation of cracks, holes, warping, and other defects in sintered ceramic parts. In this study, several approaches based on optimization of alumina powder and coupling agent were explored to improve the solid content of ceramic slurries. It was shown that slurries containing ?-Al2O3 reached solid content of only 22.5 wt% and viscosity of 15,199 mPa.s. By comparison, slurries composed of ?-Al2O3 reached higher solid content of 75 wt% and viscosity of 12,780 mPa.s. Three types of coupling agents, namely (3-Aminopropyl) triethoxysilane, (Aminoethylamino) propyldimethoxymethylsilane and 3-(Trimethoxysilyl) propyl methacrylate (abbreviated as E, F and G, respectively) were used to reduce the viscosity of the slurries. The addition of 10 wt% G led to slurry solid content reaching 82 wt% and viscosity of 860 m.Pas. The significant decrease in viscosity was mainly attributed to the presence of bifunctional hydrolyzable groups in G, which could well attach to alumina. On the other hand, the presence of organo-functional groups might also well attach to the photosensitive resin. The ceramics prepared with ?-Al2O3 exhibited numerous pores in both intraparticle and intergranular while those obtained with ?-Al2O3 showed pores in only intergranular. The porous structure in ?-Al2O3 occupied large space, leading to low solid content. Ceramics prepared with 75 wt% solid content possessed flexural strength of 29.3 MPa, bulk density of 2.3 g/cm3 and open porosity of 39.8 %. By comparison, ceramics prepared with 82 % solid content showed flexural strength of 45.0 MPa. In sum, these findings look promising for future preparation of high-solid content 3D printed ceramic slurries for complex ceramics, such as ceramic cores. |
| Keyword | Solid content Alumina ceramics Slurries Coupling agent Stereolithography |
| Funding Organization | National Key Research and Development Program of China ; Chinese National Foundation for Natural Sciences ; Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University |
| DOI | 10.1016/j.jmapro.2021.02.047 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2018YFB1106600] ; Chinese National Foundation for Natural Sciences[51672217] ; Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University[CX202006] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Manufacturing |
| WOS ID | WOS:000642044700001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161834 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Yongsheng |
| Affiliation | 1.Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China 2.Northwestern Polytech Univ, NPU SAS Joint Res Ctr Adv Ceram, Xian 710072, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Li, He,Liu, Yongsheng,Liu, Yansong,et al. 3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent[J]. JOURNAL OF MANUFACTURING PROCESSES,2021,64:1206-1213. |
| APA | Li, He,Liu, Yongsheng,Liu, Yansong,Zeng, Qingfeng,&Liang, Jingjing.(2021).3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent.JOURNAL OF MANUFACTURING PROCESSES,64,1206-1213. |
| MLA | Li, He,et al."3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent".JOURNAL OF MANUFACTURING PROCESSES 64(2021):1206-1213. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment