Production and properties of the aging powdered alloy Cu-0.8% Cr. II. Production of electric contacts of aging alloy Cu-0.8% Cr for welding machines by extrusion

1992 ◽  
Vol 31 (11) ◽  
pp. 963-965
Author(s):  
D. S. Arensburger ◽  
S. M. Letunovich
Keyword(s):  
Powdered Alloy ◽  
Electric Contacts ◽  
Aging Alloy

Electric contacts. II. Mechanics of closure for gold contacts

1973 ◽  
Vol 44 (10) ◽  
pp. 4360-4365 ◽  
Author(s):  
R. E. Cuthrell ◽  
D. W. Tipping
Keyword(s):  
Electric Contacts ◽  
Gold Contacts

scholarly journals Near-IR transparent conductive amorphous tungsten oxide thin layers by non-reactive radio-frequency magnetron sputtering

2021 ◽  
Vol 255 ◽  
pp. 05003
Author(s):  
Hao Chen ◽  
Alessandro Chiasera ◽  
Cristina Armellini ◽  
Giorgio Speranza ◽  
Stefano Varas ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Figure Of Merit ◽  
Rf Sputtering ◽  
Thin Layers ◽  
Radio Frequency Magnetron Sputtering ◽  
Amorphous Thin Films ◽  
Near Ir ◽  
Electric Contacts

Key assets for transparent electric contacts in optoelectronic applications are high conductivity and large transparency over extended spectral range. Indium-Tin-Oxide and Aluminium-doped-Zinc-oxide are commercial examples, with their electrical conductivity resembling those of metals, despite, their transparency being limited up to 1.5µm. This work introduces smooth and compact amorphous thin films of n-type semiconducting WO3-x prepared by RF-sputtering followed by annealing in dry air, as optical layers of tailorable dielectric properties. We evaluate Figure of Merit, combining electrical conductivity and optical transparency, and rate the performances as a transparent conductive layer.

ANNEALING EFFECTS ON ELECTRIC CONTACTS BETWEEN CARBON NANOTUBES AND ELECTRODES

2006 ◽  
Vol 05 (04n05) ◽  
pp. 401-406 ◽  
Author(s):  
JINGQI LI ◽  
QING ZHANG ◽  
MARY B. CHAN-PARK ◽  
YEHAI YAN
Keyword(s):  
Carbon Nanotubes ◽  
Contact Resistance ◽  
Schottky Barrier ◽  
Isopropyl Alcohol ◽  
Single Wall Carbon Nanotubes ◽  
Total Resistance ◽  
Ambient Environment ◽  
Barrier Heights ◽  
Electric Contacts ◽  
Annealing Effects

Single wall carbon nanotubes suspended in isopropyl alcohol are placed between two Au electrodes by ac dielectrophoresis method. Total resistance including the contact resistance and intrinsic tube resistance is found to decrease from 105–106 Ω for as-prepared samples to 104 Ω after annealing at 300°C in ambient environment. Measured I–V curves and Schottky barrier heights suggest that the electric contacts are changed from Schottky to Ohmic characteristics after annealing. These results demonstrate that annealing in ambient environment is a simple and efficient way to decrease the contact resistance.

scholarly journals Carbon Fibre - Copper Composites Obtained by Foil Casting

1994 ◽  
Vol 3 (2) ◽  
pp. 096369359400300
Author(s):  
W.K. Wtosiński ◽  
W. Olesińska ◽  
K. Pietrzak ◽  
D. Kaliński
Keyword(s):  
Thermal Expansion ◽  
Carbon Fibre ◽  
Casting Process ◽  
Fibre Content ◽  
Resistance Welding ◽  
Test Results ◽  
Micro Hardness ◽  
Electric Contacts

A method for production of carbon fibre - copper composites by foil casting is presented. As follows from the test results included, the foil casting process may be applied to produce the carbon fibre -copper composites. Thanks to the use continuous fibres, the method allows to obtain composites with fibres ordered directionally. Measurements of thermal expansion and micro-hardness of a composite with 30% fibre content, as well as examination of its microstructure are presented. The composites may, among others, find application in manufacturing of electrodes for resistance welding, electric contacts and expansion wafers for semiconductor power components.

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