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Title

Thermal insulation capability and adhesion strength of thick thermal barrier coatings

Year: 1399
COI: IMES14_253
Language: EnglishView: 221
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Authors

Mohammad Izadinia - Doctoral Student, School of Materials Science and Metallurgy Engineering, College of Engineering, University of Tehran, Tehran, Iran
Ali Bayati - Bachelor’s Student, School of Materials Science and Metallurgy Engineering, College of Engineering, University of Tehran, Tehran, Iran
Reza Soltani - Associate Professor, School of Materials Science and Metallurgy Engineering, College of Engineering, University of Tehran, Tehran, Iran
Reyhaneh Sadeghi - Bachelor’s Student, School of Materials Science and Metallurgy Engineering, College of Engineering, University of Tehran, Tehran, Iran

Abstract:

Thermal insulation and adhesion strength of thick thermal barrier coating produced using unpyrolyzed powder (Un TTBC) were compared with those of conventional YSZ TBCs, thick TBC (TTBC), dense vertically cracked TTBC (DVC TTBC). Many researchers have focused on extending the service life of TTBCs by improving its microstructure, however, having vertical cracks seems very promising. The thermal insulation capacity was evaluated using temperature drop and the adhesion strength of coatings was evaluated. The results indicate that Un TTBC and DVC TTBC have 35% and 25% higher adhesion strength respectively, compared to TTBC. Also, the results of thermal insulation test show that DVC TTBC coatings have the lowest thermal insulation capability with 0.28 ºC/μm and Un TTBC coatings have the highest thermal insulation capability with 0.40 ºC/μm. The adhesion strength of the Un TTBC was the highest because of presence of non-melted areas with sub-micron dimensions which prevent the cracks to grow.

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This Paper COI Code is IMES14_253. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1133514/

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Izadinia, Mohammad and Bayati, Ali and Soltani, Reza and Sadeghi, Reyhaneh,1399,Thermal insulation capability and adhesion strength of thick thermal barrier coatings,9th International Conference & Exhibition on Materials Science & Metallurgical Engineering (iMat2020),https://civilica.com/doc/1133514

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Type of center: دانشگاه دولتی
Paper count: 80,336
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