Fabrication of Thermal Plasma Sprayed NiTi Coatings Possessing Functional Properties

0542957 - ÚJF 2022 RIV CH eng J - Journal Article
Samal, S. - Tyc, O. - Čížek, J. - Klečka, J. - Lukáč, F. - Molnárová, O. - de Prado, E. - Wiess, Z. - Kopeček, J. - Heller, Luděk - Šittner, Petr - Chráska, T.
Fabrication of Thermal Plasma Sprayed NiTi Coatings Possessing Functional Properties.
Coatings. Roč. 11, č. 5 (2021), č. článku 610. E-ISSN 2079-6412
R&D Projects: GA MŠMT EF16_013/0001794
Institutional support: RVO:61389005
Keywords : NiTi * shape memory alloy * thick coating * thermal plasma spraying * functional behavior
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.236, year: 2021
Method of publishing: Open access
https://doi.org/10.3390/coatings11050610

Thick NiTi shape memory alloy coatings (300-500 mu m) were produced on graphite and AISI 304 substrates by radio frequency inductively-coupled plasma spray technology (RF-ICP) from feedstock NiTi powders. Their microstructure as well as chemical and phase composition were characterized and a methodology for the characterization of functional shape memory properties of the thick coatings was developed. The coatings exhibited cubic to monoclinic martensitic transformation and shape memory effect. The presented results prove that NiTi coatings with functional thermomechanical properties can be easily produced on structural materials by RF-ICP. Further optimization will be needed to prepare NiTi coatings with better microstructural and chemical homogeneity.
Permanent Link: http://hdl.handle.net/11104/0320277