Particle in-flight behavior and its determining the microstructure and mechanical properties of zirconia based thermal barrier coatings

DOI

10.2991/icmea-17.2018.44How to use a DOI?

Keywords

component; in-flight particle; yttria partially stabilized zirconia; microstructure; mechanical properties

Abstract

The present study aims to elaborate the particle in-flight behavior during plasma spraying and its significance in determining the microstructure and mechanical properties of plasma sprayed yttria partially stabilized zirconia (YSZ) thermal barrier coatings (TBCs). The as-sprayed YSZ coatings were characterized in terms of the defects (such as pores, unmelted particles and cracks here), hardness and fracture toughness. The results showed that, due to the higher temperature and velocity of in-flight particles in SAPS than that of APS, denser coatings were formed leading to better mechanical properties, including Vickers hardness and fracture toughness. The percentage of defects of microstructure was similar to the temperature and velocity of particles in-flight during plasma spraying. Again, the results were in agreement with that the structural defects had an strongly effect on its mechanical behavior.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Kun Liu
AU  - Jun Ma
AU  - Yu Bai
PY  - 2018/02
DA  - 2018/02
TI  - Particle in-flight behavior and its determining the microstructure and mechanical properties of zirconia based thermal barrier coatings
BT  - Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)
PB  - Atlantis Press
SP  - 190
EP  - 194
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-17.2018.44
DO  - 10.2991/icmea-17.2018.44
ID  - Liu2018/02
ER  -