Microstructural features resulting from isothermal and thermocyclic exposure of a thermal barrier coating

被引：6

作者：

Walter, ME ^{[1
]}

Onipede, B

Soboyejo, W

Mercer, C

机构：

[1] Ohio State Univ, Robinson Labs 2075, Columbus, OH 43210 USA

[2] Texas A&M Univ, College Stn, TX 77801 USA

[3] Princeton Univ, Princeton, NJ 08544 USA

来源：

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME | 2000年 / 122卷 / 03期

关键词：

D O I：

10.1115/1.482805

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Thermal barrier coating (TBC) systems are receiving a great deal of attention as a result of their ability to enable higher operating temperatures without sacrificing component durability in gas turbine systems. Nonetheless, there are a number of unknowns associated with the failure of TBC systems. In particular the initiation and propagation of damage has not been observed. In this paper, the microstructural changes in and along the thermally growth oxide layer of a TBC are presented. Specimens were studied primarily after isothermal exposure for 48, 96, 200, and 300 hours at 1100 degreesC and also after thermocyclic exposure. Failure features are discussed and the growth of oxide is quantified. The oxide growth is placed within the context of a parabolic growth model. [S0094-4289(00)01503-6].

引用

页码：333 / 337

页数：5

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