3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent

doi:10.1016/j.jmapro.2021.02.047

IMR OpenIR

	3D printed ceramic slurries with improved solid content through optimization of alumina powder and coupling agent
	Li, He 1,2; Liu, Yongsheng 1,2; Liu, Yansong 1,2; Zeng, Qingfeng 1; Liang, Jingjing 3
通讯作者	Liu, Yongsheng(yongshengliu@nwpu.edu.cn)
	2021-04-01
发表期刊	JOURNAL OF MANUFACTURING PROCESSES
ISSN	1526-6125
卷号	64 页码:1206-1213
摘要	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.
关键词	Solid content Alumina ceramics Slurries Coupling agent Stereolithography
资助者	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
收录类别	SCI
语种	英语
资助项目	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研究方向	Engineering
WOS类目	Engineering, Manufacturing
WOS记录号	WOS:000642044700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161834
专题	中国科学院金属研究所
通讯作者	Liu, Yongsheng
作者单位	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
推荐引用方式 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.