Journal ArticleDOI
Spalling failure of a thermal barrier coating associated with aluminum depletion in the bond-coat
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TLDR
In this article, the phase conversion occurs after the alumina TGO has cracked on thermal cycling and the underlying bond-coat alloy is depleted of aluminum with concurrent enrichment of the oxide by Cr, Co and Ni.About:
This article is published in Acta Materialia.The article was published on 1999-03-10. It has received 286 citations till now. The article focuses on the topics: Thermal barrier coating & Superalloy.read more
Citations
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Journal ArticleDOI
Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings
Afsaneh Rabiei,A.G. Evans +1 more
TL;DR: In this article, the microstructure and durability of a thermal barrier coating (TBC) produced by the thermal spray method have been characterized and a wedge impression test, in conjunction with observations by scanning electron microscopy, was used to probe the failure mechanisms.
Journal ArticleDOI
Coatings for gas turbine materials and long term stability issues
TL;DR: In this article, a case study relating to the interdiffusion of coatings and a typical third generation Ni-based alloy is presented which shows that this phenomenon may be of importance with respect to coating life.
Journal ArticleDOI
Advances in Coating Design for High-Performance Gas Turbines
TL;DR: In this article, the authors focus on coating systems for hot-gas-path components, which can vary from low-cost aluminide diffusion coatings to the more exotic, and therefore expensive, thermal-barrier coatings.
Journal ArticleDOI
Failure modes in plasma-sprayed thermal barrier coatings
TL;DR: In this paper, a commercial plasma-sprayed thermal barrier coatings (TBCs) were investigated in an effort to elucidate the failure modes during thermal-cycling and the average residual stress in the TGO was found to be of the order of 1 GPa.
Journal ArticleDOI
Towards durable thermal barrier coatings with novel microstructures deposited by solution-precursor plasma spray
Nitin P. Padture,K.W Schlichting,Tania Bhatia,Alper Ozturk,Baki M. Cetegen,Eric H. Jordan,Maurice Gell,Stephen Jiang,T.D Xiao,P.R Strutt,E. Garcia,Pilar Miranzo,María Isabel Osendi +12 more
TL;DR: In this paper, a solution precursor plasma spray (SPPS) was proposed for the deposition of ZrO2-based thermal barrier coatings (TBCs) with novel structures, which appeared to be responsible for their improved thermal cycling life relative to conventional plasma-sprayed TBCs.
References
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Journal ArticleDOI
Microstructure, adhesion and growth kinetics of protective scales on metals and alloys
H. Hindam,D. P. Whittle +1 more
TL;DR: In this article, the complex interrelationships among growth kinetics, microstructure, and adhesion of protective Cr2O3 and Al 2O3 scales is critically reviewed.
Journal ArticleDOI
Determination of the Piezospectroscopic Coefficients for Chromium‐Doped Sapphire
Jun He,David R. Clarke +1 more
TL;DR: In this paper, the authors measured the frequency shift for uniaxial compression along three principal crystallographic directions and for loading in the three principal shear directions of a 0.05 wt% ruby.
Journal ArticleDOI
Stress Measurement in Single-Crystal and Polycrystalline Ceramics Using Their Optical Fluorescence
Qing Ma,David R. Clarke +1 more
TL;DR: In this article, a general methodology is developed for determining the state of stress and the numerical value of the stresses from observed shifts and broadening of optical fluorescence lines, based on the piezospectroscopic properties of single crystals.
Journal ArticleDOI
Measurement of the stress in oxide scales formed by oxidation of alumina-forming alloys
Don Mark Lipkin,David R. Clarke +1 more
TL;DR: In this paper, the authors show that the alumina scales on a variety of high-temperature alloys are found to fluoresce when illuminated with light having a frequency greater than 18,000 cm−1.
Journal ArticleDOI
Nondestructive evaluation of the oxidation stresses through thermal barrier coatings using Cr3+ piezospectroscopy
TL;DR: In this paper, the stresses in the aluminum oxide formed during high-temperature oxidation of a bond-coated superalloy are measured through zirconia thermal barrier coatings.
Related Papers (5)
Thermal Barrier Coatings for Gas-Turbine Engine Applications
Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings
Afsaneh Rabiei,A.G. Evans +1 more