On growth of suspension plasma-sprayed coatings deposited by high-enthalpy plasma torch

0525625 - ÚFP 2021 RIV CH eng J - Journal Article
Tesař, Tomáš - Mušálek, Radek - Medřický, Jan - Čížek, Jan
On growth of suspension plasma-sprayed coatings deposited by high-enthalpy plasma torch.
Surface and Coatings Technology. Roč. 371, August (2019), s. 333-343. ISSN 0257-8972
R&D Projects: GA ČR GB14-36566G
Institutional support: RVO:61389021
Keywords : thermal barrier coatings * microstructure * conductivity * Suspension plasma spraying * Buildup * Dense microstructure * Columnar-like microstructure * Spray bead * Hybrid water-stabilized plasma torch (WSP-H)
OECD category: Materials engineering
Impact factor: 3.784, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S025789721930101X?via%3Dihub

Introduction of suspension plasma spraying (SPS) brought novel coating microstructures unachievable by other thermal spraying techniques. Both columnar and dense layers are of particular interest for various applications. Deeper understanding of the coating buildup mechanisms is essential for tailoring of the coatings microstructure and properties. This paper contributes to elucidation of the buildup mechanisms with focus on high enthalpy plasma torches, in particular the hybrid water/argon-stabilized plasma torch WSP-H 500. The main differences between the formation of finely structured dense coatings and columnar coatings were studied for alumina and yttria-stabilized zirconia (YSZ) by comprehensive evaluation of individual splat formation, gradual coating growth, and geometrical characteristics of the deposits.
Permanent Link: http://hdl.handle.net/11104/0309732