Institute of Physics of Materials AS CR, v. v. i. > Projects > Plasma deposition, microstructural and thermo-mechanical stability of environmental barrier coatings
Plasma deposition, microstructural and thermo-mechanical stability of environmental barrier coatings
|Investigator||doc. RNDr. Karel Obrtlík, CSc.|
|Number of Project||15-20991S|
|Agency||Grantová agentura České republiky|
|Duration||2014-12-31 - 2017-12-30|
|The proposed project is directed to the preparation of advanced environmental barriers operating in oxidizing and corrosion atmosphere under variable loading at high temperature. A bond metallic coat CoNiCrAlY and an environmental barrier top coat of the BMAS type protecting the coating system against the frequent foreign object damage will be deposited on the surface of cast nickel base superalloy Inconel 713LC using air plasma spraying. Thermal barrier coating based on ZrO2-Y2O3 will be alternatively deposited between the bond and top coats. Thermo-mechanical and microstructural stability of these systems will be studied with experimental tests (thermal exposure, high temperature|
low cycle fatigue, its interaction with creep and thermo-mechanical fatigue) and analytical methods (microstructure, chemical and phase composition) that make possible to acquire lifetime data of the coatings in conditions close to their application and to identify mechanisms leading to their degradation. The results obtained will be also compared with properties and behaviour of uncoated material.