DEPOSITION OF TITANIA FROM SOLUTION BY HYBRID WATER-STABILIZED PLASMA TORCH

1 MUŠÁLEK Radek
Co-authors:
1 MEDŘICKÝ Jan 1 TESAŘ Tomáš 1 KOTLAN Jiří 1 LUKÁČ František
Institution:
1 Institute of Plasma Physics CAS, v.v.i. Prague, Czech Republic, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
1121-1126
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
66 views / 15 downloads
Abstract

Thermal spraying with liquid feedstock presents a novel route for deposition of functional coatings. In this study, possibility of preparation of titania coatings from solution by hybrid water stabilized plasma torch is presented. Coatings were prepared from solution of titanium isopropoxide Ti[OCH(CH3)2]4 in anhydrous ethanol. Fragmentation of feedstock stream in the plasma jet was monitored by shadowgraphy. Deposition was carried out on steel samples mounted to the cooled rotating carousel. Cross-sectional images from SEM microscope showed successful formation of the deposit with dual morphology consisting of fine feather-like features combined with bigger droplets. X-ray diffraction revealed formation of nanometric rutile crystallites.

Keywords: Thermal spraying, plasma spraying, titania, solution, liquid feedstock

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