Thermal Barrier Coatings

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Preface

Part I: Materials and structure

Chapter 1: Thermal barrier coatings prepared by electron beam physical vapor deposition (EB–PVD)

Abstract:

1.1 Introduction

1.2 Preparation process and parameters

1.3 Preparation processes of two-layered thermal barrier coatings (TBCs)

1.4 Factors affecting thermal cyclic behavior of TBCs

1.5 Preparation of graded thermal barrier coatings (GTBCs)

1.6 Failure mechanism

1.7 Conclusion

Chapter 2: Ceramic thermal barrier coating materials

Abstract:

2.1 Introduction

2.2 State-of-the-art ceramic thermal barrier coating (TBC) material – yttria stabilized zirconia (YSZ)

2.3 Zirconia doped with one or more oxides

2.4 Yttria stabilized hafnia and other alternative ceramic TBC materials

2.5 Lanthanum compounds, silicates and rare earth oxides

2.6 (Ca1-xMgx)Zr4(PO4)6 (CMZP), perovskite oxides and metal–glass composite

2.7 Future trends

Chapter 3: Metallic coatings for high-temperature oxidation resistance

Abstract:

3.1 Introduction

3.2 Oxidation-resistant metallic coatings and their fabrication techniques

3.3 Metallic coatings as bond coats for thermal barrier coatings (TBCs)

3.4 Conclusions

3.5 Acknowledgements

Chapter 4: Nanostructured thermal barrier coatings

Abstract:

4.1 Introduction

4.2 Spray-drying process making powders

4.3 Phase composition and microstructure of nanostructured thermal barrier coatings (TBCs)

4.4 Mechanical properties

4.5 Thermophysical properties and the failure behavior

4.6 Conclusion

Part II: Processing and spraying techniques

Chapter 5: Plasma spraying for thermal barrier coatings: processes and applications

Abstract:

5.1 Introduction

5.2 Basic plasma concepts

5.3 Plasma spraying

5.4 Applications of plasma spraying

5.5 Conclusions

5.6 Acknowledgements

Chapter 6: Processing, microstructures and properties of thermal barrier coatings by electron beam physical vapor deposition (EB–PVD)

Abstract:

6.1 Introduction

6.2 Description of the physical principles of electron beam physical vapor deposition (EB–PVD)

6.3 Manufacturing of thermal barrier coatings (TBCs) by EB-PVD

6.4 EB-PVD TBC microstructure and its advantages over plasma-sprayed coatings

6.5 Hot-fatigue behavior and failure mechanisms of TBCs

Chapter 7: Processing, microstructures and properties of thermal barrier coatings (TBCs) by plasma spraying (PS)

Abstract:

7.1 Introduction

7.2 Processing of thermal barrier coatings (TBCs) by plasma spraying (PS)

7.3 Microstructures of TBCs processed by PS

7.4 Properties of TBCs processed by PS

7.5 Conclusion

Chapter 8: Plasma-sprayed thermal barrier coatings with segmentation cracks

Abstract:

8.1 Introduction

8.2 Manufacturing of segmented thermal barrier coatings (TBCs)

8.3 Microstructure of segmented TBCs

8.4 Thermophysical and mechanical properties of segmented TBCs

8.5 Thermal shock resistance and associate failure mechanism

8.6 Future trends

Chapter 9: Detonation gun sprayed thermal barrier coatings

Abstract:

9.1 Introduction

9.2 Detonation gun (D-gun) sprayed thermal barrier coatings (TBCs)

9.3 TBCs deposited through arc ion plating (AIP)/D-gun two-step technology

9.4 Future trends

9.5 Conclusion

Part III: Performance of thermal barrier coatings

Chapter 10: Oxidation and hot corrosion of thermal barrier coatings (TBCs)

Abstract:

10.1 Introduction

10.2 Oxidation of thermal barrier coatings

10.3 Failure mechanisms of TBCs

10.4 The degradation mechanisms experienced by TBC systems exposed to deposits

10.5 Conclusions

Chapter 11: Failure mechanism of thermal barrier coatings by electron beam physical vapor deposition (EB–PVD) under thermomechanical coupled loads

Abstract:

11.1 Introduction

11.2 Establishment of gas turbine service environment simulation system

11.3 Failure mechanism of EB–PVD TBC under in-plane thermal gradient coupled with mechanical loading

11.4 Failure mechanism of EB–PVD TBC under 3-D thermal gradient coupled with mechanical loading

11.5 Conclusions

Chapter 12: Non-destructive evaluation (NDE) of the failure of thermal barrier coatings

Abstract:

12.1 Introduction

12.2 Failure of thermal barrier coatings (TBCs)

12.3 Development of failure inspection methods

12.4 Future trends

Chapter 13: Substrate and bond coat related failure of thermal barrier coatings

Abstract:

13.1 Introduction

13.2 Substrate related failure of thermal barrier coatings (TBCs)

13.3 Compatibility issues of nickel-based single-crystal superalloys with thermal barrier coating systems

13.4 Bond coat related failure of TBCs

13.5 Effect of bond coat on the TBC degradation mechanisms

13.6 Conclusions and future trends

Chapter 14: Life prediction of thermal barrier coatings

Abstract:

14.1 Introduction

14.2 The mechanical behavior of thermal barrier coating (TBC) systems under elevated temperatures

14.3 Life prediction for TBCs

14.4 Future trends

14.5 Conclusion

Chapter 15: New materials, technologies and processes in thermal barrier coatings

Abstract:

15.1 Introduction

15.2 Chemically modified yttria stabilized zirconia (YSZ)

15.3 Alternate low thermal conductivity (κ) materials

15.4 Microstructure modification

15.5 Advanced processing technologies

15.6 Future trends

Index