Evaluation of the Lifetime and Thermal Conductivity of Dysprosia-Stabilized Thermal Barrier Coating Systems

被引：0
作者：
Nicholas Curry
Nicolaie Markocsan
Lars Östergren
Xin-Hai Li
Mitch Dorfman
机构：
[1] University West,
[2] GKN Aerospace Engine Systems,undefined
[3] Siemens Industrial Turbomachinery AB,undefined
[4] Sulzer Metco,undefined
来源：
Journal of Thermal Spray Technology | 2013年 / 22卷
关键词：
atmospheric plasma spraying; thermal barrier coating; thermal conductivity; thermo-cyclic fatigue;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The aim of this study was the further development of dysprosia-stabilized zirconia coatings for gas turbine applications. The target for these coatings was a longer lifetime and higher insulating performance compared to today’s industrial standard thermal barrier coating. Two morphologies of ceramic top coat were studied: one using a dual-layer system and the second using a polymer to generate porosity. Evaluations were carried out using a laser flash technique to measure thermal properties. Lifetime testing was conducted using thermo-cyclic fatigue testing. Microstructure was assessed with SEM and Image analysis was used to characterize porosity content. The results show that coatings with an engineered microstructure give performance twice that of the present reference coating.
引用
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页码：864 / 872
页数：8
相关论文
共 105 条
[1]  
Miller R(1997)Thermal Barrier Coatings for Aircraft Engines: History and Directions J. Therm. Spray Technol. 6 35-42
[2]  
Harnacha R(1996)Influence of Dopant on the Thermal Properties of Two Plasma-Sprayed Zirconia Coatings. Part I: Relationship Between Powder Characteristics and Coating Properties J. Therm. Spray Technol. 5 431-438
[3]  
Fauchais P(2009)Sintering Characteristics of Plasma Sprayed Zirconia Coatings Containing Different Stabilisers Surf. Coat. Technol. 203 1069-1074
[4]  
Nardou F(2007)Low Thermal Conductivity Coatings for Gas Turbine Applications J. Therm. Spray Technol. 16 498-505
[5]  
Paul S(2009)Effect of Thermal Aging on Microstructure and Functional Properties of Zirconia-Base Thermal Barrier Coatings J. Therm. Spray Technol. 18 201-208
[6]  
Cipitria A(2010)Next Generation Thermal Barrier Coatings for the Gas Turbine Industry J. Therm. Spray Technol. 20 108-115
[7]  
Tsipas SA(2005)Studies of the Sintering Kinetics of Thick Thermal Barrier Coatings by Thermal Diffusivity Measurements J. Eur. Ceram. Soc. 25 393-400
[8]  
Clyne TW(2001)Influence of Impurity Content and Porosity of Plasma-Sprayed Yttria-Stabilized Zirconia Layers on the Sintering Behaviour Surf. Coat. Technol. 141 135-140
[9]  
Markocsan N(2007)Properties and Performance of High-Purity Thermal Barrier Coatings J. Therm. Spray Technol. 16 804-808
[10]  
Nylen P(2010)Effect of Dopants on the Phase Stability of Zirconia-Based Plasma Sprayed Thermal Barrier Coatings J. Eur. Ceram. Soc. 30 61-72
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