Synthesis of bismuth-strontium-calcium-copper oxide powders for silver composite wires with uniform micron sized filaments

1999 ◽  
Vol 9 (2) ◽  
pp. 2601-2604 ◽  
Author(s):  
S. Sengupta ◽  
E. Caprino ◽  
K. Card ◽  
J.R. Gaines ◽  
L.R. Motowidlo ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Oxide Powders ◽  
Strontium Calcium Copper Oxide ◽  
Composite Wires ◽  
Silver Composite

Photonic Sintering of Composite Pastes with Copper Oxide Powders Using Different Light Sources

2021 ◽  
Author(s):  
Wei-Han Cheng ◽  
Po-Hsiang Chiu ◽  
Yan-Jie Li ◽  
Ming-Tsang Lee ◽  
Kiyokazu Yasuda ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Light Sources ◽  
Oxide Powders ◽  
Photonic Sintering

scholarly journals Microanalytical study of defect formation in thin bismuth strontium calcium copper oxide films

1994 ◽  
Author(s):  
Richard H. Howell ◽  
Alison Chaiken ◽  
Ronald G. Musket ◽  
Mark A. Wall ◽  
Mehdi Balooch ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Defect Formation ◽  
Oxide Films ◽  
Strontium Calcium Copper Oxide

Microstructure and properties of Cu-rich 123: Part II. Homogeneous copper and high magnetic Jc

1993 ◽  
Vol 8 (6) ◽  
pp. 1232-1239 ◽  
Author(s):  
J.P. Zhang ◽  
D.J. Li ◽  
C. Boldt ◽  
R. Plass ◽  
V. Dravid ◽  
...  
Keyword(s):  
Grain Size ◽  
Copper Oxide ◽  
Magnetic Hysteresis ◽  
Processing Route ◽  
Planar Defects ◽  
Oxide Powders ◽  
Bulk Superconductors ◽  
A Value ◽  
Double Planes ◽  
Small Platelet

Copper- and yttrium-rich YBa2Cu3O7 bulk superconductors have been prepared by mixing copper oxide or yttrium oxide in nitric acid and adding the solution to premade stoichiometric YBa2Cu3O7 followed by annealing. In contrast to materials made by mixing oxide powders, both samples contain copper-rich defects spread homogeneously throughout the grains, either small platelet copper oxide precipitates or bundles of planar defects (Cu–O double planes). These materials also show large magnetic hysteresis at 77 K, comparable to the results obtained from decomposed YBa2Cu4O8. This implies that small copper oxide precipitates and bundles of planar defects are strong flux pinners, and indicates a processing route to producing large amounts of strongly intragranular pinned superconductors. However, the materials also show clean grain boundaries, so an equally valid interpretation is that there is a substantial component of intergranular superconductivity in field, enhancing the effective circuit size to a value far larger than the grain size.

Synthesis of Ceria-Coated Copper Oxide Particles for Direct Hydrocarbon SOFCs Anode

2006 ◽  
Vol 510-511 ◽  
pp. 1118-1121
Author(s):  
Jun Lee ◽  
Seung Hun Lee ◽  
Eun A Lee ◽  
Hae Jin Hwang
Keyword(s):  
Copper Oxide ◽  
Precursor Solution ◽  
Cerium Nitrate ◽  
Precipitation Method ◽  
Oxide Surface ◽  
Process Conditions ◽  
Nitrate Hexahydrate ◽  
Oxide Powders ◽  
Oxide Particles ◽  
20 Nm

Ceria-coated copper oxide powders were prepared by the precipitation method using cerium nitrate hexahydrate and ammonia as a precipitant. Heterogeneous nucleation and growth of ceria took place on the copper oxide surface by dispersing the copper oxide particles in cerium nitrate aqueous solution and subsequently adding ammonia into it. Process conditions such as the pH of the precursor solution and precipitation temperatures were carefully controlled for the homogeneous precipitation of ceria particles. It was found that copper oxide was homogeneously coated with nano-sized (~20 nm) ceria particles at room temperature. The morphology of ceria and ceria-coated copper oxide powder were examined by field-emission scanning electron microscopy (FE-SEM) as a function of precipitation temperature.

Preparation of shape-controlled copper oxide powders from copper-containing solution

2002 ◽  
Vol 54 (2-3) ◽  
pp. 229-237 ◽  
Author(s):  
Younghee Ko Kim ◽  
Doh-Hyung Riu ◽  
Soo-Ryong Kim ◽  
Byung-Ik Kim
Keyword(s):  
Copper Oxide ◽  
Oxide Powders ◽  
Shape Controlled
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