Femtosecond pulsed laser damage characteristics of 7% Y2O3-ZrO2 thermal barrier coating

被引：19

作者：

Das, D. K. ^{[1
]}

McDonald, J. P. ^{[2
]}

Yalisove, S. M. ^{[2
]}

Pollock, T. M. ^{[1
]}

机构：

[1] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2008年 / 91卷 / 03期

关键词：

D O I：

10.1007/s00339-008-4417-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ablation characteristics of 7% yttria stabilized zirconia thermal barrier coating, deposited by the electron beam physical vapor deposition method, was studied using a femtosecond pulsed laser. The single-pulse damage threshold fluence for the coating was determined to be 1.64 J cm(-2). The threshold fluence was not appreciably dependent on the initial roughness of the coating surface. An incubation effect, i.e., a decrease in the damage threshold fluence with an increase in number of pulses incident at a given location, was observed for this coating. Based on the damage morphology generated by single and multi-pulse interactions, a mechanism for the incubation effect was proposed.

引用

页码：421 / 428

页数：8

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