Effect of Holding Time During Sintering on Microstructure and Properties of 3D Printed Alumina Ceramics

doi:10.3389/fmats.2020.00054

IMR OpenIR

	Effect of Holding Time During Sintering on Microstructure and Properties of 3D Printed Alumina Ceramics
	Pan, Yu; Li, He; Liu, Yongsheng; Liu, Yansong; Hu, Kehui; Wang, Ning; Lu, Zhigang; Liang, Jingjing; He, Sujun
	2020-04-02
发表期刊	FRONTIERS IN MATERIALS
卷号	7
摘要	In this work, alumina ceramics were formed via stereolithography-based 3D printing technology in order to fabricate ceramic cores in a fast and cost-effective way. Effects of holding time during sintering on microstructure and properties of alumina ceramics were investigated. Sintered alumina ceramics were made up of layered structures due to layer-by-layer forming method. In addition, interlayer spacing decreased with the increase in holding time. Average particle size, shrinkage, crystallite size, flexural strength, and hardness increased with the increase in holding time due to strong interfacial bonding among alumina particles. Open porosity decreased slightly as holding time increased. Moreover, it was found that holding time had little influence on bulk density, phase composition, and chemical bonds of the ceramics. The shrinkage in Z direction was about 1.8 times higher than that in X or Y directions due to layered structure caused by 3D printing forming method. The optimum holding time was 90 min, which resulted in ceramics with interlayering spacing of 11.8 mu m, shrinkage of 2.1% in X direction, 2.1% in Y direction, and 4.1% in Z direction, flexural strength of 20.7 MPa, nano-indentation hardness of 17.6 GPa, Vickers hardness of 114.3 HV, bulk density of 2.5 g/cm(3), and open porosity of 39.0%.
DOI	10.3389/fmats.2020.00054
WOS记录号	WOS:000596941100001
引用统计	被引频次：39[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/321006/155708
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Pan, Yu,Li, He,Liu, Yongsheng,et al. Effect of Holding Time During Sintering on Microstructure and Properties of 3D Printed Alumina Ceramics[J]. FRONTIERS IN MATERIALS,2020,7.
APA	Pan, Yu.,Li, He.,Liu, Yongsheng.,Liu, Yansong.,Hu, Kehui.,...&He, Sujun.(2020).Effect of Holding Time During Sintering on Microstructure and Properties of 3D Printed Alumina Ceramics.FRONTIERS IN MATERIALS,7.
MLA	Pan, Yu,et al."Effect of Holding Time During Sintering on Microstructure and Properties of 3D Printed Alumina Ceramics".FRONTIERS IN MATERIALS 7(2020).