Freeze-Form Extrusion Fabrication of Functionally Graded Materials

Author

Ming-Chuan Leu, Missouri University of Science and TechnologyFollow
Bradley K. Deuser
Lie Tang
Robert G. Landers, Missouri University of Science and TechnologyFollow
Greg Hilmas, Missouri University of Science and TechnologyFollow
Jeremy Lee Watts, Missouri University of Science and TechnologyFollow

Abstract

Presented in this paper is a novel additive manufacturing technology for making three-dimensional parts with functionally graded materials (FGMs), called Freeze-form Extrusion Fabrication (FEF). The system development included a triple-extruder mechanism, extruder modeling and control, pastes extrusion planning for desired composition gradients, and software coding for motion and extrusion control. The effectiveness of the developed FEF system was demonstrated first by fabricating limestone (CaCO3) parts with graded colors and then by fabricating 'green' parts with graded compositions between alumina (Al2O3) and zirconia (ZrO2). The fabricated part went through post-processing, and the sintered part was analyzed using energy dispersive spectroscopy (EDS) to determine its material compositions.

Recommended Citation

M. Leu et al., "Freeze-Form Extrusion Fabrication of Functionally Graded Materials," CIRP Annals - Manufacturing Technology, vol. 61, no. 1, pp. 223 - 226, Elsevier, Jan 2012.

The definitive version is available at https://doi.org/10.1016/j.cirp.2012.03.050

Department(s)

Mechanical and Aerospace Engineering

Second Department

Materials Science and Engineering

Keywords and Phrases

Additive Manufacturing; Extrusion; Functionally Graded Materials

International Standard Serial Number (ISSN)

0007-8506

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Elsevier, All rights reserved.

Publication Date

01 Jan 2012