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- Title
Characterization of Copper Coatings Deposited by High-Velocity Oxy-Fuel Spray for Thermal and Electrical Conductivity Applications.
- Authors
Salimijazi, H.; Aghaee, M.; Salehi, M.; Garcia, E.
- Abstract
Copper coatings were deposited on steel substrates by high-velocity oxy-fuel spraying. The microstructure of the feedstock copper powders and free-standing coatings were evaluated by optical and scanning electron microscopy. The x-ray diffraction pattern was utilized to determine phase compositions of powders and coatings. Oxygen content was determined by a LECO-T300 oxygen determiner. The thermal conductivity of the coatings was measured in two directions, through-thickness and in-plane by laser flash apparatus. The electrical resistivity of the coatings was measured by the four-point probe method. Oxygen content of the coatings was two times higher than that of the initial powders (0.35-0.37%). The thermal and electrical conductivities of the coatings were different depending on the direction of the measurement. The thermal and electrical conductivity of the coatings improved after annealing for 6 h at a temperature of 600°C.
- Subjects
THERMAL properties of surface coatings; COPPER films; METAL coating; ELECTRIC conductivity; THERMAL conductivity; STEEL; SPRAYING; SCANNING electron microscopy
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2017, Vol 69, Issue 11, p2302
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2537-x