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Dual gradient direct ink writing for formation of kaolinite ceramic functionally graded materials
Gemological Institute, China University of Geosciences, Wuhan, 430074, China. Hubei Jewelry Engineering Technology Research Center, Wuhan, 430074, China.
Gemological Institute, China University of Geosciences, Wuhan, 430074, China. Hubei Jewelry Engineering Technology Research Center, Wuhan, 430074, China.
Gemological Institute, China University of Geosciences, Wuhan, 430074, China. Hubei Jewelry Engineering Technology Research Center, Wuhan, 430074, China.
Gemological Institute, China University of Geosciences, Wuhan, 430074, China. Hubei Jewelry Engineering Technology Research Center, Wuhan, 430074, China.
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2020 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 814, article id 152275Article in journal (Refereed) Published
Abstract [en]

Direct ink writing (DIW) technique has emerged as a powerful tool to create specific functionally graded materials (FGMs) products with macroscopic and microscopic porous architectures and mechanical properties. In order to explore the DIW process control method of ceramic composite FGMs, several additives (e.g., polysorbate, liquid paraffin and water) were mixed with kaolinite and barite powders to print the gradient materials with difference in both material compositions and structures. A stable ceramic slurry with a viscosity of 2.66–3.66 GP s at 5 MPa atmospheric pressure has been formulated by uniformly mixing 2 μm and 10 μm particles. Besides, the optimized flow rate of 150 mml/s and thickness of 0.5 mm were well proved to obtain good stacking of the slurry, whereas, the change of velocity shows little effect on the forming quality. The meso/macro pores of the gradient component can be achieved by adjusting the printing and sintering processes. The dual-extrusion DIW method presented here is versatile to be adapted to a wide range of biomimetic ceramic materials for the fabrication of FGMs objects with unprecedented properties.

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 814, article id 152275
Keywords [en]
Ceramic composite, Direct ink writing, Functionally graded materials, Pore distribution, Additives, Atmospheric pressure, Biomimetic materials, Biomimetic processes, Ceramic materials, Kaolinite, Sintering, Ceramic composites, Change of velocities, Gradient component, Gradient materials, Macroscopic and microscopic, Material compositions, Porous architectures
National Category
Ceramics
Research subject
Chemistry; Materials Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-263429DOI: 10.1016/j.jallcom.2019.152275Scopus ID: 2-s2.0-85072528299OAI: oai:DiVA.org:kth-263429DiVA, id: diva2:1375541
Note

QC20191205

Available from: 2019-12-05 Created: 2019-12-05 Last updated: 2019-12-05Bibliographically approved

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Dadbakhsh, Sasan

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