As-coated thermal barrier coating: structure and chemistry

被引：23

作者：

Chen, Y. ^{[1
]}

Reed, R. C. ^{[2
]}

Marquis, E. A. ^{[1
]}

机构：

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

[2] Univ Birmingham, Dept Met & Mat, Edgbaston B15 2TT, England

来源：

SCRIPTA MATERIALIA | 2012年 / 67卷 / 09期

关键词：

Thermal barrier coatings; Pt-diffused bond coat; Superalloy; Atom probe tomography; SPECIMEN PREPARATION; TBC SYSTEMS;

D O I：

10.1016/j.scriptamat.2012.06.023

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A thermal barrier coating in the as-processed state is characterized using transmission electron microscopy and atom probe tomography. The structure of the thermally grown oxide correlates strongly with that of the bond coat with alternating regions of mixed alumina/zirconia in contact with gamma' and coarse-grained alumina in contact with gamma. Significant Pt and A1 diffusion fields are present in gamma, but not in gamma'. The mechanism by which the structure and chemistry evolves at the TGO/bond coat interface is elucidated. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：779 / 782

页数：4

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