Microstructural Characterization of Thermal Barrier Coatings Glazed by a High Power Laser

Zhou, Hong and Li, Fei and Wang, Jun and Sun, Baode (2016) Microstructural Characterization of Thermal Barrier Coatings Glazed by a High Power Laser. 2016 International Conference on Materials Science and Engineering, Guangzhou, China, 24-26 July, 2016.

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Abstract or Summary

Plasma-sprayed thermal barrier coatings were laser-glazed by a high power laser in order to modify the structures. The microstructure of laser-glazed TBCs is investigated. The result indicates that a smooth and dense glazed surface with craters and a network of microcracks is obtained after laser-glazing. The laser-glazed region consists of a columnar microstructure. There are segmentation microcracks in the laser-glazed coatings, which don’t run through the coatings along thickness. Surface roughness has been reduced significantly for the laser treated ceramic coatings.

Item Type:Paper presented at a conference, workshop or other event, and published in the proceedings
Keywords that describe the item:Surface laser-glazing; Thermal barrier coatings; Plasma Spray; Microstructure
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TS Manufactures
Divisions:Schools > Centre for Engineering and Industrial Design
ID Code:4551
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Deposited On:18 Oct 2016 00:19
Last Modified:23 Nov 2018 01:58

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