Inicio  /  Coatings  /  Vol: 11 Par: 5 (2021)  /  Artículo
ARTÍCULO
TITULO

Fabrication of Thermal Plasma Sprayed NiTi Coatings Possessing Functional Properties

Sneha Samal    
Ondrej Tyc    
Jan Cizek    
Jakub Klecka    
Franti?ek Lukác    
Orsolya Molnárová    
Esther de Prado    
Zdenek Weiss    
Jaromír Kopecek    
Ludek Heller    
Petr ?ittner and Tomá? Chráska    

Resumen

Thick NiTi shape memory alloy coatings (300?500 µm) 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.

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