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Dual gradient direct ink writing for formation of kaolinite ceramic functionally graded materials
China Univ Geosci, Gemol Inst, Wuhan 430074, Hubei, Peoples R China.;Hubei Jewelry Engn Technol Res Ctr, Wuhan 430074, Hubei, Peoples R China..
China Univ Geosci, Gemol Inst, Wuhan 430074, Hubei, Peoples R China.;Hubei Jewelry Engn Technol Res Ctr, Wuhan 430074, Hubei, Peoples R China..
China Univ Geosci, Gemol Inst, Wuhan 430074, Hubei, Peoples R China.;Hubei Jewelry Engn Technol Res Ctr, Wuhan 430074, Hubei, Peoples R China..
China Univ Geosci, Gemol Inst, Wuhan 430074, Hubei, Peoples R China.;Hubei Jewelry Engn Technol Res Ctr, Wuhan 430074, Hubei, Peoples R China..
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2020 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 814, article id UNSP 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 mm and 10 mm 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 SCIENCE SA , 2020. Vol. 814, article id UNSP 152275
Keywords [en]
Ceramic composite, Direct ink writing, Functionally graded materials, Pore distribution
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:kth:diva-263326DOI: 10.1016/j.jallcom.2019.152275ISI: 000490765400024Scopus ID: 2-s2.0-85072528299OAI: oai:DiVA.org:kth-263326DiVA, id: diva2:1375903
Note

QC 20191206

Available from: 2019-12-06 Created: 2019-12-06 Last updated: 2019-12-06Bibliographically approved

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Dadbakhsh, Sasan

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