Freeze-form extrusion fabrication of functionally graded materials

被引:82
作者
Leu, Ming C. [1 ]
Deuser, Bradley K. [1 ]
Tang, Lie [1 ]
Landers, Robert G. [1 ]
Hilmas, Gregory E. [2 ]
Watts, Jeremy L. [2 ]
机构
[1] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA
[2] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO USA
基金
美国国家科学基金会;
关键词
Additive manufacturing; Extrusion; Functionally graded materials;
D O I
10.1016/j.cirp.2012.03.050
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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. (C) 2012 CIRP.
引用
收藏
页码:223 / 226
页数:4
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