Publication detail

Advanced Microscopic Study of Suspension Plasma Sprayed Zirconia Coatings with Different Microstructures

SOKOLOWSKI, P. PAWLOWSKI, L. DIETRICH, D. LAMPKE, T. JECH, D.

Original Title

Advanced Microscopic Study of Suspension Plasma Sprayed Zirconia Coatings with Different Microstructures

Type

journal article in Web of Science

Language

English

Original Abstract

The present paper is focused on the characterization of the differences between two microstructures that can be obtained using SPS technology, namely (i) columnar and (ii) two-zone microstructure including lamellas and fine unmelted particulates. The optimization of spray parameters was made, and the advanced microstructural studies of obtained coatings were performed. The work was focused on zirconia stabilized by yttria (YSZ, ZrO2 + 14 wt.% Y2O3) and both by yttria and ceria (YCSZ, ZrO2 + 24 wt.% CeO2 + 2.5 wt.% Y2O3) which are frequently used as thermal barrier coatings. Two types of microstructure were achieved using two different plasma torches, namely SG-100 of Praxair and Triplex of Oerlikon Metco. The microstructure of prepared coatings was analyzed using scanning electron microscopy with secondary electrons detector and backscattered electrons. Energy dispersive spectroscopy was performed to analyze the chemical composition of sprayed coatings. By electron backscatter diffraction grain shape, size, and crystal orientation were determined. The analysis enabled the discussion of the coatings growth mechanism. Finally, the Shape From Shading technique was applied to recreate and to analyze 3D views of coatings topographies, and using laser confocal microscopy, the surface roughness was examined.

Keywords

columnar microstructure; electron backscatter diffraction; suspension plasma spraying; thermal barrier coatings; two-zone microstructure; yttriaceria-stabilized zirconia; yttria-stabilized zirconia

Authors

SOKOLOWSKI, P.; PAWLOWSKI, L.; DIETRICH, D.; LAMPKE, T.; JECH, D.

RIV year

2015

Released

24. 9. 2015

Publisher

Springer International Publishing AG

Location

Slovakia

ISBN

1059-9630

Periodical

JOURNAL OF THERMAL SPRAY TECHNOLOGY

Year of study

25

Number

1

State

United States of America

Pages from

94

Pages to

104

Pages count

11

URL

http://link.springer.com/article/10.1007/s11666-015-0310-7

BibTex

@article{BUT115644,
  author="SOKOLOWSKI, P. and PAWLOWSKI, L. and DIETRICH, D. and LAMPKE, T. and JECH, D.",
  title="Advanced Microscopic Study of Suspension Plasma Sprayed Zirconia Coatings with Different Microstructures",
  journal="JOURNAL OF THERMAL SPRAY TECHNOLOGY",
  year="2015",
  volume="25",
  number="1",
  pages="94--104",
  doi="10.1007/s11666-015-0310-7",
  issn="1059-9630",
  url="http://link.springer.com/article/10.1007/s11666-015-0310-7"
}