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Title: A novel freeform extrusion fabrication process for producing solid ceramic components with uniform layered radiation drying

Abstract

An extrusion-based additive manufacturing process, called the Ceramic On-Demand Extrusion (CODE) process, for producing three-dimensional ceramic components with near theoretical density is introduced in this paper. Heere in this process, an aqueous paste of ceramic particles with a very low binder content (<1 vol%) is extruded through a moving nozzle at room temperature. After a layer is deposited, it is surrounded by oil (to a level just below the top surface of most recent layer) to preclude non-uniform evaporation from the sides. Infrared radiation is then used to partially, and uniformly, dry the just-deposited layer so that the yield stress of the paste increases and the part maintains its shape. The same procedure is repeated for every layer until part fabrication is completed. Several sample parts for various applications were produced using this process and their properties were obtained. The results indicate that the proposed method enables fabrication of large, dense ceramic parts with complex geometries.

Authors:
 [1];  [1];  [1];  [1]
  1. Missouri University of Science and Technology, Rolla, MO (United States)
Publication Date:
Research Org.:
Univ. of Missouri, Columbia, MO (United States); Missouri Univ. of Science and Technology, Rolla, MO (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1533484
Alternate Identifier(s):
OSTI ID: 1414890
Grant/Contract Number:  
FE0012272
Resource Type:
Accepted Manuscript
Journal Name:
Additive Manufacturing
Additional Journal Information:
Journal Volume: 15; Journal Issue: C; Journal ID: ISSN 2214-8604
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; 3D printing; extrusion freeforming; fused deposition; robocasting; radiation drying

Citation Formats

Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., and Hilmas, Gregory E. A novel freeform extrusion fabrication process for producing solid ceramic components with uniform layered radiation drying. United States: N. p., 2017. Web. doi:10.1016/j.addma.2017.04.001.
Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., & Hilmas, Gregory E. A novel freeform extrusion fabrication process for producing solid ceramic components with uniform layered radiation drying. United States. https://doi.org/10.1016/j.addma.2017.04.001
Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., and Hilmas, Gregory E. Sat . "A novel freeform extrusion fabrication process for producing solid ceramic components with uniform layered radiation drying". United States. https://doi.org/10.1016/j.addma.2017.04.001. https://www.osti.gov/servlets/purl/1533484.
@article{osti_1533484,
title = {A novel freeform extrusion fabrication process for producing solid ceramic components with uniform layered radiation drying},
author = {Ghazanfari, Amir and Li, Wenbin and Leu, Ming C. and Hilmas, Gregory E.},
abstractNote = {An extrusion-based additive manufacturing process, called the Ceramic On-Demand Extrusion (CODE) process, for producing three-dimensional ceramic components with near theoretical density is introduced in this paper. Heere in this process, an aqueous paste of ceramic particles with a very low binder content (<1 vol%) is extruded through a moving nozzle at room temperature. After a layer is deposited, it is surrounded by oil (to a level just below the top surface of most recent layer) to preclude non-uniform evaporation from the sides. Infrared radiation is then used to partially, and uniformly, dry the just-deposited layer so that the yield stress of the paste increases and the part maintains its shape. The same procedure is repeated for every layer until part fabrication is completed. Several sample parts for various applications were produced using this process and their properties were obtained. The results indicate that the proposed method enables fabrication of large, dense ceramic parts with complex geometries.},
doi = {10.1016/j.addma.2017.04.001},
journal = {Additive Manufacturing},
number = C,
volume = 15,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2017},
month = {Sat Apr 15 00:00:00 EDT 2017}
}

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Cited by: 73 works
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