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Multi-component low and high entropy metallic coatings synthesized by pulsed magnetron sputtering
Natl Ctr Nucl Res NCBJ, Poland.
Natl Ctr Nucl Res NCBJ, Poland.
Natl Ctr Nucl Res NCBJ, Poland; Natl Ctr Nucl Res, Poland.
Natl Ctr Nucl Res, Poland.
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2022 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 446, article id 128802Article in journal (Refereed) Published
Abstract [en]

This paper presents the findings of the synthesis of multicomponent (Al, W, Ni, Ti, Nb) alloy coatings from mosaic targets. For the study, a pulsed magnetron sputtering method was employed under different plasma generation conditions: modulation frequency (10 Hz and 1000 Hz), and power (600 W and 1000 W). The processes achieved two types of alloy coatings, high entropy and classical alloys. After the deposition processes, scanning electron microscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy techniques were employed to find the morphology, thickness, and chemical and phase compositions of the coatings. Nanohardness and its related parameters, namely H-3/E-r(2), H/E, and 1/(ErH)-H-2 ratios, were measured. An annealing treatment was performed to estimate the stability range for the selected coatings. The results indicated the formation of as-deposited coatings exhibiting an amorphous structure as a single-phase solid solution. The process parameters had an influence on the resulting morphology & mdash;a dense and homogenous as well as a columnar morphology, was obtained. The study compared the properties of high-entropy alloy (HEA) coatings and classical alloy coatings concerning their structure and chemical and phase composition. It was found that the change of frequency modulation and the post-annealing process contributed to the increase in the hardness of the material in the case of HEA coatings.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2022. Vol. 446, article id 128802
Keywords [en]
Pulsed magnetron sputtering; Pulsed plasma; Nanohardness; Frequency modulation; High entropy alloys
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:liu:diva-188415DOI: 10.1016/j.surfcoat.2022.128802ISI: 000848078900005OAI: oai:DiVA.org:liu-188415DiVA, id: diva2:1695474
Note

Funding Agencies|European Union Horizon 2020 Research and Innovation program [857470]; European Regional Development Fund via the Foundation for Polish Science International Research Agenda PLUS program [MAB PLUS/2018/8]

Available from: 2022-09-14 Created: 2022-09-14 Last updated: 2022-09-14

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Thin Film PhysicsFaculty of Science & Engineering
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