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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v9.i1.100
pages 109-125

THERMAL AND MECHANICAL PROPERTIES OF PARTIALLY STABILIZED ZIRCONIA MANUFACTURED BY HYBRID PLASMA SPRAY PROCESS

Guy Antou
SPCTS - UMR CNRS 6638, Faculty of Sciences, University of Limoges, 123 avenue Albert Thomas, 87060 Limoges, France
Ghislain Montavon
LERMPS laboratory, University of Technology of Belfort‐Montbéliard
Francoise Hlawka
LISS, Institut National des Sciences Appliquées de Strasbourg, 24 Bd de la Victoire 67 000 Strasbourg, France
Rodolphe Bolot
LERMPS, Université de Technologie de Belfort-Montbéliard, site de Sévenans, 90 010 Belfort Cedex, France
Alain Cornet
LISS, Institut National des Sciences Appliquées de Strasbourg, 24 Bd de la Victoire 67 000 Strasbourg, France
Christian Coddet
LERMPS, Université de Technologie de Belfort-Montbéliard, site de Sévenans, 90 010 Belfort Cedex
Frederique Machi
IREPA-Laser, Pôle API, Parc Technologique, 67 400 Illkirch, France

RESUMO

Thermal barrier coatings (TBCs) constituted by Yttria Partially Stabilized Zirconia (i.e., Y-PSZ, ZrO2 + 7wt% Y2O3) and a metallic bond layer (i.e., MCrAlY where M represents a combination of Ni and Co) are extensively used to improve the performance of hot-section components of gas turbines. Air plasma spray and in situ laser irradiation by diode laser processes are combined to modify thermal and mechanical properties of TBCs. Two types of experiment were conducted to estimate the coating elastic response: Berkovich nano-indentation to evaluate the Young's modulus of the bulk material, and Knoop micro-indentation to evaluate the effective Young's modulus of the coating and its cohesion.