Journal
SURFACE & COATINGS TECHNOLOGY
Volume 318, Issue -, Pages 72-81Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2016.12.021
Keywords
Cold gas dynamic spraying (CGDS); Thermal barrier coatings (TBCs); Oxidation; Thermally grown oxide (TGO); Oxidation rate
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [111M265]
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The cold gas dynamic spray (CGDS) method was employed to deposit the CoNiCrAIY bond coats of thermal barrier coating (TBC) system. The oxidation behavior of the coatings were investigated under isothermal oxidation at 1000 degrees C, 1100 degrees C and 1200 degrees C for 8, 24, 50 and 100 h. Recent studies on TBCs have concentrated on the CGDS process and its properties under working conditions. The motivation of this study is to investigate the oxidation behavior of TBCs produced using CGDS technique under service conditions and to determine the oxidation growth kinetics of thermally grown oxide (TGO). The results show that the isothermal degradation of coatings was considerably influenced by microstructure of coating, interfacial oxide growth rate, oxidation temperature and time. (C) 2016 Elsevier B.V. All rights reserved.
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