Microwave Processing of Redox Ceramic-Metal Composites

1996 ◽  
Vol 430 ◽  
Author(s):  
R. R. Di Fiore ◽  
D. E. Clark
Keyword(s):  
Compressive Strength ◽  
Activated Carbon ◽  
Copper Oxide ◽  
Yttria Stabilized Zirconia ◽  
Carbon Powder ◽  
Stabilized Zirconia ◽  
Metal Composites ◽  
Reducing Atmosphere ◽  
Fine Powders ◽  
Microwave Hybrid Heating

AbstractCeramic-metal composites have been produced through the reduction of copper oxide (CuO) and the oxidation of aluminum in a reducing atmosphere. Fine powders of CuO and Al (<38μm) were mixed with yttria stabilized zirconia, ball milled and uniaxially pressed into disc samples. Microwave hybrid heating was used to process samples using β-SiC and activated carbon powder as susceptors. Pyrolysis of the carbon provided the reducing atmosphere. The resulting Ctt/Al2O3/Y-ZrO2 composite was analyzed for density, compressive strength and resistivity.

Effects of 8mol% yttria-stabilized zirconia with copper oxide on solid oxide fuel cell performance

2015 ◽  
Vol 41 (6) ◽  
pp. 7982-7988 ◽  
Author(s):  
Jin Goo Lee ◽  
Ok Sung Jeon ◽  
Kwang Hyun Ryu ◽  
Myeong Geun Park ◽  
Sung Hwan Min ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Copper Oxide ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Cell Performance ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Fuel Cell Performance

Yttria-Stabilized Zirconia Supported Copper Oxide Catalyst

1996 ◽  
Vol 160 (2) ◽  
pp. 155-170 ◽  
Author(s):  
Wei-Ping Dow ◽  
Yu-Piao Wang ◽  
Ta-Jen Huang
Keyword(s):  
Copper Oxide ◽  
Oxide Catalyst ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Structure and State of Copper Oxide Species Supported on Yttria-Stabilized Zirconia

2009 ◽  
Vol 113 (51) ◽  
pp. 21368-21375 ◽  
Author(s):  
Vera P. Pakharukova ◽  
Ella M. Moroz ◽  
Vladimir V. Kriventsov ◽  
Tatyana V. Larina ◽  
Andrey I. Boronin ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

scholarly journals Characterization of 3D Printed Yttria-Stabilized Zirconia Parts for Use in Prostheses

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2942
Author(s):  
Irene Buj-Corral ◽  
Daniel Vidal ◽  
Aitor Tejo-Otero ◽  
José Antonio Padilla ◽  
Elena Xuriguera ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Compressive Strength ◽  
Mechanical Strength ◽  
Total Porosity ◽  
Shrinkage Porosity ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Layer Height ◽  
3D Printed ◽  
Extrusion Printing

The main aim of the present paper is to study and analyze surface roughness, shrinkage, porosity, and mechanical strength of dense yttria-stabilized zirconia (YSZ) samples obtained by means of the extrusion printing technique. In the experiments, both print speed and layer height were varied, according to a 22 factorial design. Cuboid samples were defined, and three replicates were obtained for each experiment. After sintering, the shrinkage percentage was calculated in width and in height. Areal surface roughness, Sa, was measured on the lateral walls of the cuboids, and total porosity was determined by means of weight measurement. The compressive strength of the samples was determined. The lowest Sa value of 9.4 μm was obtained with low layer height and high print speed. Shrinkage percentage values ranged between 19% and 28%, and porosity values between 12% and 24%, depending on the printing conditions. Lowest porosity values correspond to low layer height and low print speed. The same conditions allow obtaining the highest average compressive strength value of 176 MPa, although high variability was observed. For this reason, further research will be carried out about mechanical strength of ceramic 3D printed samples. The results of this work will help choose appropriate printing conditions extrusion processes for ceramics.

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