Share Email Print
cover

Proceedings Paper

Laser irradiation effect on plasma sprayed YSZ coating
Author(s): Lin Lu; Fuchi Wang; Zhuang Ma
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Laser drilling was attempted to make closely spaced cooling holes on YSZ coated metal substrate. As a preparation work for laser drilling, the laser irradiation effect on YSZ coating was investigated. Laser irradiation experiment was performed using a continuous fiber laser (λ=1070nm), with maximum power density of approximately 2000W. The original and irradiated coatings were observed and analyzed through SEM images. Through the overall top surface images and low magnification cross-section SEM images, the destruction features of YSZ coating were obtained. With low laser energy input, the coatings were destructed in terms of crack imitation and propagation; with high laser energy input, the coatings were melted and pushed away. The laser destructive effect is more sensitive with the laser power increasing than with the expanding of irradiation time. Through high magnification SEM images of cross-section, the character of the microstructure of the laser irradiated YSZ coating was summarized and the formation mechanism was concluded. The laser melted YSZ coating can be divided into three layers, including the isometric crystal layer, the columnar crystal layer and the reserved original YSZ layer. The formation mechanism was related to the rapid solidification process and thermal dissipation condition.

Paper Details

Date Published: 16 May 2013
PDF: 7 pages
Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87960S (16 May 2013); doi: 10.1117/12.2011283
Show Author Affiliations
Lin Lu, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Fuchi Wang, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Zhuang Ma, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8796:
2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)
Stefan Kaierle; Jingru Liu; Jianlin Cao, Editor(s)

© SPIE. Terms of Use
Back to Top