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

Investigatordoc. RNDr. Karel Obrtlík, CSc.
Number of Project15-20991S
AgencyGrantová agentura České republiky
Duration2014-12-31 - 2017-12-30

Anotace
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.


2018

Šulák I., Obrtlík K., Čelko L., Chráska T., Jech D., Gejdoš P.: Low cycle fatigue performance of Ni-based superalloy coated with complex thermal barrier coating. Mater. Character. 139 (2018) 347-354

Šulák I., Obrtlík K., Čelko L., Jech D., Gejdoš P.: High-Temperature Low Cycle Fatigue Resistance of Inconel 713LC Coated with Novel Thermal Barrier Coating. Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture 1 (2018) 49-56



2017

Čelko L., Jech D., Komarov P., Remešová M., Dvořák K., Šulák I., Smetana B., Obrtlík K.: Failure Mechanism of Yttria Stabilized Zirconia Atmospheric Plasma Sprayed Thermal Barrier Coatings Subjected to Calcia-Magnesia-Alumino-Silicate Environmental Attack. Solid State Phenom. 270 (2017) 39-44

Čelko L., Jech D., Dvořák J., Šulák I., Klakurková L., Obrtlík K.: Durability of Amorphous and Crystalline BMAS Thermal Barrier Coatings Produced by Plasma Spraying. Solid State Phenom. 258 (2017) 383-386

Šulák I., Obrtlík K., Čelko L., Gejdoš P.: Degradation of YSZ/EUCOR TBC Coating System during High Temperature Low Cycle Fatigue Tests. Solid State Phenom. 258 (2017) 420-423

Šulák I., Obrtlík K., Hrbáček K.: Low cycle fatigue behaviour and fatigue crack initiation in MAR-M247 at 700 °c. METAL 2017 Conf. Proc - (2017) 1580-1586

Obrtlík K., Čelko L., Chráska T., Šulák I., Gejdoš P.: Effect of alumina-silica-zirconia eutectic ceramic thermal barrier coating on the low cycle fatigue behaviour of cast polycrystalline nickel-based superalloy at 900 C. Surf. Coat. Technol. 318 (2017) 374-381

Šulák I., Obrtlík K.: Fatigue Crack Initiation in Nickel-Based Superalloy MAR-M247 at High Temperature. Key Eng. Mater. 754 (2017) 27-30

Šulák I., Obrtlík K.: Effect of tensile dwell on high-temperature low-cycle fatigue and fracture behaviour of cast superalloy MAR-M247. Eng. Fract. Mech. 185 (2017) 92-100



2016

Šulák I., Obrtlík K., Čelko L.: High Temperature Low Cycle Fatigue Characteristics of Grit Blasted Polycrystalline Ni-Base Superalloy. Key Eng. Mater. 665 (2016) 73-76

Šulák I., Obrtlík K., Čelko L.: Comparative Study of Microstructure and High Temperature Low Cycle Fatigue Behaviour of Nickel Base Superalloys Inconel 713LC and MAR-M247. Key Eng. Mater. 713 (2016) 86-89

Šulák I., Obrtlík K., Čelko L.: High-temperature low-cycle fatigue behaviour of HIP treated and untreated superalloy MAR-M247. Kovové materiály 54 (2016) 471-481



2015

Šulák I., Obrtlík K., Čelko L., Gejdoš P.: Effect of grit blasting surface treatment on high temperature low cycle fatigue life of Inconel 713LC. Multi-scale Design of Advanced Materials, Conf. Proc. - (2015) 139-144