Influence of plasma spraying process parameters on properties of the deposited Ni-Al coatings

Sigitas Tamulevicius; Rytis Dargis; Pranas Valatkevicius; Kestutis Slapikas

doi:10.1117/12.425469

17 April 2001 Influence of plasma spraying process parameters on properties of the deposited Ni-Al coatings

Sigitas Tamulevicius, Rytis Dargis, Pranas Valatkevicius, Kestutis Slapikas

Proceedings Volume 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology; (2001) https://doi.org/10.1117/12.425469
Event: International Conference on Solid State Crystals 2000, 2000, Zakopane, Poland

Abstract

Plasma spraying technique was used for deposition of Al and Ni-Al coatings with special electrochemical characteristics. Influence of the plasma spraying process on characteristics of plasma stream and properties of the deposited coatings was investigated. Temperature field in the plasma torch, dependence of temperature of the probe placed in the plasma stream on the gas flux, pressure in the deposition chamber and arc discharge output power were measured experimentally. Surface morphology of th3 coatings by optical microscope and scanning electron microscope was investigated. It was found high dependence of the morphology on composition of the plasma gas. X-ray technique for investigation of chemical composition of the coatings was used. It was found that inter-diffusion of nickel and aluminum during deposition of the coatings takes part. This phenomenon influences chemical composition of the surface and electro-chemical characteristics of the coatings.

Citation Download Citation

Sigitas Tamulevicius, Rytis Dargis, Pranas Valatkevicius, and Kestutis Slapikas "Influence of plasma spraying process parameters on properties of the deposited Ni-Al coatings", Proc. SPIE 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (17 April 2001); https://doi.org/10.1117/12.425469

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