Abstract
The conventional method to evaluate thermal insulation capacity (TIC) of thermal barrier coatings involves the measurement of three parameters, which incurred a large accumulative error. To solve this problem, a self-designed new experimental apparatus was used in this work to compare the TIC of nine ceramic coatings composed of nine ceramic powders with different contents of Gd, Yb, Y and Zr, respectively, synthesized by a new fast hydrothermal method. It was found that the insulation temperature (ΔT) of Yttria-stabilized Zirconia (YSZ) coating mainly depended on the material property and thus reflected the TIC of coating by using this new apparatus. The ΔT value was the temperature difference between a blank sample without coating and a coating sample. The measured ΔT values were found to be highly reproducible. Thus, comparing TIC of the nine Gd-Yb-YSZ coatings by measuring ΔT was more accurate and rapid than the conventional method. The measured ΔT values of nine Gd2O3 and Yb2O3 added YSZ (Gd-Yb-YSZ) coatings were about 10–20 °C higher than that of YSZ coating at 1050 °C. This indicated that the addition of Gd and Yb enhanced TIC of YSZ coating.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
