Additive manufacturing alumina components with lattice structures by digital light processing technique

doi:10.1016/j.jmst.2019.08.001Get rights and content

J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (12): 2751-2755.DOI: 10.1016/j.jmst.2019.08.001Get rights and content

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Additive manufacturing alumina components with lattice structures by digital light processing technique

Qingfeng Zeng^a^b^c^*(), Changhao Yang^a, Dingyi Tang^a, Jiayao Li^a, Zhiqiang Feng^c^d^e^*(), Jiantao Liu^f, Kang Guan^g

a.Science and Technology on Thermostructural Composite Materials Laboratory, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
b.International Center for Materials Discovery, School of Materials Science and Engineering, Northwestern Polytechical University, Xi'an 710072, China
c.MSEA International Institute for Materials Genome, Gu'an, 065500, China
d. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China
e. LMEE-UEVE, Université Paris-Saclay, Evry 91020, France
f. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
g. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

Received:2018-09-15 Revised:2018-10-31 Accepted:2019-04-14 Online:2019-12-05 Published:2019-12-18
Contact: Zeng Qingfeng,Feng Zhiqiang

Abstract

Abstract:

Digital light processing technique was applied to manufacture alumina ceramic parts with two types of lattice structure units, i.e. vertex interconnect structure and edge structure. The internal porosity of the unit is 40%. The printed parts were sintered and the grain size is about 1.1?μm. The bending strength of the vertex interconnect structure is much larger than that of the edge structure. Materials genome initiative (MGI) aims to digital design and intelligent manufacture for advanced components. This research shows us an example to achieve this goal.

Key words: Additive manufacturing, Ceramics, DLP, Lattice structure

Qingfeng Zeng, Changhao Yang, Dingyi Tang, Jiayao Li, Zhiqiang Feng, Jiantao Liu, Kang Guan. Additive manufacturing alumina components with lattice structures by digital light processing technique[J]. J. Mater. Sci. Technol., 2019, 35(12): 2751-2755.

Figures/Tables 8

Fig. 1. Lattice structures under consideration: the edge structure (a) and the structure of the interconnected vertices (b).

Fig. 2. Testing model designed with the edge structure (a) and the structure of the interconnected vertices (b).

Fig. 3. Sintered alumina components designed with the edge structure (a) and the structure of the interconnected vertices (b).

Fig. 4. Morphology of polished fracture of the alumina ceramic before (a) and after (b) sintering at 1650?°C.

Fig. 5. Constraints used for simulations.

Fig. 6. Stress distribution of the edge structure (a) (b) and the structure of the interconnected vertices (c) (d) (N/m2).

Fig. 7. Loading vs deflection curve obtained from simulation.

Fig. 8. Loading vs deflection curve obtained from the three-point bending test.

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Additive manufacturing alumina components with lattice structures by digital light processing technique

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