scholarly journals Feasibility of Fused Deposition of Ceramics with Zirconia and Acrylic Binder

2016 ◽  
Author(s):  
Lindsay V. Page
Keyword(s):  
Fused Deposition ◽  
Fused Deposition Of Ceramics

scholarly journals Additive Manufacturing of β-Tricalcium Phosphate Components via Fused Deposition of Ceramics (FDC)

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 156
Author(s):  
Steffen Esslinger ◽  
Axel Grebhardt ◽  
Jonas Jaeger ◽  
Frank Kern ◽  
Andreas Killinger ◽  
...  
Keyword(s):  
Tricalcium Phosphate ◽  
Critical Size ◽  
Bone Defects ◽  
Healthcare Systems ◽  
The Body ◽  
Patient Specific ◽  
Poly Lactic Acid ◽  
Fused Deposition ◽  
Poly Ethylene ◽  
Fused Deposition Of Ceramics

Bone defects introduced by accidents or diseases are very painful for the patient and their treatment leads to high expenses for the healthcare systems. When a bone defect reaches a critical size, the body is not able to restore this defect by itself. In this case a bone graft is required, either an autologous one taken from the patient or an artificial one made of a bioceramic material such as calcium phosphate. In this study β-tricalcium phosphate (β-TCP) was dispersed in a polymer matrix containing poly(lactic acid) (PLA) and poly(ethylene glycole) (PEG). These compounds were extruded to filaments, which were used for 3D printing of cylindrical scaffolds via Fused Deposition of Ceramics (FDC) technique. After shaping, the printed parts were debindered and sintered. The components combined macro- and micropores with a pore size of 1 mm and 0.01 mm, respectively, which are considered beneficial for bone healing. The compressive strength of sintered cylindrical scaffolds exceeded 72 MPa at an open porosity of 35%. The FDC approach seems promising for manufacturing patient specific bioceramic bone grafts.

Fabrication of Piezoelectric CeramicPolymer Composite Transducers Using Fused Deposition of Ceramics

2000 ◽  
Vol 83 (1) ◽  
pp. 124-28 ◽  
Author(s):  
Gwenalle M. Lous ◽  
Ivn A. Cornejo ◽  
Thomas F. McNulty ◽  
Ahmad Safari ◽  
Stephen C. Danforth
Keyword(s):  
Fused Deposition ◽  
Fused Deposition Of Ceramics

Processing and Characterization of Al2O3 and Al2O3 / Cu Alloy Composites

2001 ◽  
Vol 698 ◽  
Author(s):  
R.C. McCuiston ◽  
S.C. Danforth ◽  
D.E. Niesz
Keyword(s):  
Copper Alloys ◽  
Metal Composites ◽  
Binder Removal ◽  
Fused Deposition ◽  
Cu Alloy ◽  
Scanning Electron Microcopy ◽  
Potential Applications ◽  
Fused Deposition Of Ceramics ◽  
Scanning Electron

ABSTRACTFused deposition of ceramics (FDC) has been used to fabricate macroscopically graded ceramic skeletons. These Al2O3 skeletons were subjected to binder removal and sintering treatments. The sintered skeletons were infiltrated with copper alloys. Both the skeletons and composites were characterized for micro and macrostructure using scanning electron microcopy. Potential applications for the macroscopically graded ceramic/metal composites focus primarily on impact.

Mechanical Properties of Feedstock Material for Fused Deposition of Ceramics

1998 ◽  
Vol 542 ◽  
Author(s):  
N. Venkataraman ◽  
T. McNulty ◽  
S. Rangarajan ◽  
M. Vidaic ◽  
M. J. Matthewson ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lead Zirconate Titanate ◽  
Storage Time ◽  
Failure Strain ◽  
Lead Zirconate ◽  
Failure Stress ◽  
Fused Deposition ◽  
Crosshead Displacement ◽  
Fused Deposition Of Ceramics ◽  
Feedstock Material

AbstractA scientific methodology to characterize the critical mechanical properties of feedstock material for fused deposition of ceramics has been developed. A detailed discussion of the methodology of mechanical characterization and results for lead zirconate titanate (PZT) fused deposition of ceramics (FDC) feedstock is presented. The effect of storage time, temperature and crosshead displacement rates on the mechanical properties of the PZT FDC feedstock was studied. The modulus and the failure stress increase with displacement rate. The modulus and failure stress decrease with temperature indicating the necessity for cooling filaments prior to entrance to liquefier. The modulus also decreases with storage time in 50% RH while failure strain increases with storage time in 50% RH.

Processing of Novel Electroceramic Components by SFF Techniques

1998 ◽  
Vol 542 ◽  
Author(s):  
A. Safari ◽  
S. C. Danforth ◽  
A. L. Kholkin ◽  
I. A. Cornejo ◽  
F. Mohammadi ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Composite Structures ◽  
Volume Fraction ◽  
Solid Freeform Fabrication ◽  
Side Lobe ◽  
Electromechanical Properties ◽  
Freeform Fabrication ◽  
Fused Deposition ◽  
Fused Deposition Of Ceramics ◽  
Aided Design

AbstractNovel piezoelectric ceramic and ceramic/polymer composite structures were fabricated by solid freeform fabrication (SFF) for sensor and actuator applications. SFF techniques including fused deposition of ceramics (FDC) and Sanders prototyping (SP) were utilized to fabricate a variety of complex structures directly from a computer aided design (CAD) file. Novel composite structures including volume fraction gradients (VFG) and staggered rods, as well as actuator designs such as tubes, spirals and telescopes were made using the flexibility provided by the above processes. VFG composites were made by SP technique with the ceramic content decreasing from the center towards the edges. This resulted in a reduction of side lobe intensity in the acoustic beam pattern. The FDC technique was used to manufacture high authority actuators utilizing novel designs for the amplification of strain under applied electric field. The design, fabrication and electromechanical properties of these composite and actuator structures are discussed in this paper.

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