Microstructural Features Resulting From Isothermal and Thermocyclic Exposure of a Thermal Barrier Coating-Reference-Cited by-同舟云学术

Microstructural Features Resulting From Isothermal and Thermocyclic Exposure of a Thermal Barrier Coating

Published:2000-03-02 Issue:3 Volume:122 Page:333-337
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Walter Mark E.¹,Onipede Bolarinwa²,Soboyejo Wole³,Mercer Chris³

Affiliation:

1. The Ohio State University, 2075 Robinson Labs, Columbus, OH 43210

2. Texas A&M University, College Station, TX 77801

3. Princeton University, Princetion, NJ 08544

Abstract

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°C 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]

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/materialstechnology/article-pdf/122/3/333/5798807/333_1.pdf

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