Thermal Treatment of gamma-Al2O3 for the Preparation of Stereolithography 3D Printing Ceramic Slurries

doi:10.3389/fmats.2019.00295

CORC > 金属研究所 > 中国科学院金属研究所

	Thermal Treatment of gamma-Al2O3 for the Preparation of Stereolithography 3D Printing Ceramic Slurries
	Li, He 1; Liu, Yongsheng 1; Liu, Yansong 1; Zeng, Qingfeng 1; Liang, Jingjing 2
刊名	FRONTIERS IN MATERIALS
	2019-11-19
卷号	6 页码:12
关键词	stereolithography alumina temperature shrinkage three-dimensional
ISSN号	2296-8016
DOI	10.3389/fmats.2019.00295
通讯作者	Liu, Yongsheng(yongshengliu@nwpu.edu.cn) ; Zeng, Qingfeng(qfzeng@nwpu.edu.cn)
英文摘要	Alumina (Al2O3) suspensions were prepared for the effective application in the stereolithography three-dimensional (3D) printing process. Thermal treatment of gamma-Al2O3 could optimize the ceramic slurries to meet the requirements of stereolithography 3D printing technique. In this study, alumina powders were modified by thermal treatment at different temperatures for the preparation of well-dispersed ceramic slurries. The influence of thermal treatment on the raw powder, printed green bodies, and sintered alumina parts was systematically studied. Thermogravimetric analysis indicated that the decomposition temperature of photosensitive resin was between 390 and 460 degrees C. The alumina powders became denser, the crystal grains changed from round sphere-shaped to long cylinder-shaped, and the pores disappeared with increasing thermal treatment temperature. After the 3D printing process, the microstructure of green bodies and sintered alumina ceramics exhibited significant variation. Decomposition and removal of photosensitive resin led to higher water absorption, higher porosity, and lower bulk density of alumina ceramics compared to the printed green bodies. The scattering phenomenon in ceramic slurries and layer-by-layer forming characteristic determined the different shrinkage in three directions. Experimental results suggested that 1,500 degrees C was considered as the optimal thermal treatment temperature, with the water absorption of 107%, open porosity of 91%, and bulk density of 0.67 g cm(-3). The higher thermal treatment temperatures would lead to clump and agglomerate of alumina powders.
资助项目	National Key Research and Development Program of China[2018YFB1106600] ; Chinese National Foundation for Natural Sciences[51672217] ; Research Fund of the State Key Laboratory of Solidification Processing[120-TZ-2015]
WOS研究方向	Materials Science
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000501280500001
资助机构	National Key Research and Development Program of China ; Chinese National Foundation for Natural Sciences ; Research Fund of the State Key Laboratory of Solidification Processing
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/135999]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Yongsheng; Zeng, Qingfeng
作者单位	1.Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Li, He,Liu, Yongsheng,Liu, Yansong,et al. Thermal Treatment of gamma-Al2O3 for the Preparation of Stereolithography 3D Printing Ceramic Slurries[J]. FRONTIERS IN MATERIALS,2019,6:12.
APA	Li, He,Liu, Yongsheng,Liu, Yansong,Zeng, Qingfeng,&Liang, Jingjing.(2019).Thermal Treatment of gamma-Al2O3 for the Preparation of Stereolithography 3D Printing Ceramic Slurries.FRONTIERS IN MATERIALS,6,12.
MLA	Li, He,et al."Thermal Treatment of gamma-Al2O3 for the Preparation of Stereolithography 3D Printing Ceramic Slurries".FRONTIERS IN MATERIALS 6(2019):12.