Publication detail

The Role of Microstructure on Wettability of Plasma Sprayed Yttria Stabilized Zirconia Coatings

KOMAROV, P. ČELKO, L. REMEŠOVÁ, M. SKOROKHOD, K. JECH, D. KLAKURKOVÁ, L. SLÁMEČKA, K. MUŠÁLEK, R.

Original Title

The Role of Microstructure on Wettability of Plasma Sprayed Yttria Stabilized Zirconia Coatings

Type

conference paper

Language

English

Original Abstract

Atmospheric plasma spraying utilizing initial powder materials in micrometric size has been successfully used for various applications in different fields of the industry over the past several decades. Nowadays, the new trend in plasma spraying is to use sub-micron or nano-sized powder feedstocks in the form of colloidal suspension. This relatively new technology enables to obtain specific types of dense vertically cracked, fully dense or columnar microstructure. The aim of this work is microstructures, i.e. lamellar and columnar, were sprayed from chemically the same yttria-stabilized zirconia ceramics by means of conventional atmospheric plasma spray and suspension water stabilized plasma spray techniques, respectively. Microstructural and phase composition of the initial powders and as-sprayed coatings were investigated using optical microscopy, scanning electron microscopy and X-ray diffraction techniques. Topography of coatings surface was measured by means of non-contact optical profilometry. The YSZ coatings wettability was evaluated based on water droplet contact angle using Sessile droplet method. The coatings microstructure reveals the important role in the change of droplet contact angle, where lamellar structure was found close to hydrophilic-hydrophobic transition and columnar structure was found almost superhydrophobic.

Keywords

Atmospheric plasma spraying; micron sized powder feedstocks; nano-sized powder feedstocks; colloidal suspension

Authors

KOMAROV, P.; ČELKO, L.; REMEŠOVÁ, M.; SKOROKHOD, K.; JECH, D.; KLAKURKOVÁ, L.; SLÁMEČKA, K.; MUŠÁLEK, R.

Released

24. 5. 2017

Publisher

TANGER Ltd.

Location

Ostrava

ISBN

978-80-87294-79-6

Book

Metal 2017 Conference Prosceedings

Pages from

1116

Pages to

1121

Pages count

6

BibTex

@inproceedings{BUT138611,
  author="KOMAROV, P. and ČELKO, L. and REMEŠOVÁ, M. and SKOROKHOD, K. and JECH, D. and KLAKURKOVÁ, L. and SLÁMEČKA, K. and MUŠÁLEK, R.",
  title="The Role of Microstructure on Wettability of Plasma Sprayed Yttria Stabilized Zirconia Coatings",
  booktitle="Metal 2017 Conference Prosceedings",
  year="2017",
  pages="1116--1121",
  publisher="TANGER Ltd.",
  address="Ostrava",
  isbn="978-80-87294-79-6"
}