Title of article
Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment
Author/Authors
Mohammad Reza Loghman-Estarki، نويسنده , , Reza Shoja Razavi، نويسنده , , Hossein Edris، نويسنده , , Mousa Pourbafrany، نويسنده , , Hossein Jamali، نويسنده , , Reza Ghasemi Barghi، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
10
From page
1405
To page
1414
Abstract
Nanostructured scandia (4.6 mol%), yttria (0.4 mol%) doped zirconia (5SYSZ) and 7 wt% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 °C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.
Keywords
Atmospheric plasma spraying , Nanostructured thermal barrier coatings , Durability of TBCs under thermal cycling , C. Thermal shock resistance
Journal title
Ceramics International
Serial Year
2014
Journal title
Ceramics International
Record number
1275633
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