High Temperature Coatings (eBook)
312 Seiten
Elsevier Science (Verlag)
978-0-08-046955-3 (ISBN)
With his long experience in the aerospace gas turbine industry, the author has compiled the very latest in coating materials and coating technologies, as well as hard-to-find guidance on maintaining and repairing thermal coatings, including appropriate inspection protocols. The book will be supplemented with the latest reference information and additional support for finding more application-type and industry-type coatings specifications and uses, with help for the reader in finding more detailed information on a specific type of coating or a specific type of use.
· Offers overview of the underlying fundamental concepts of thermally-protective coatings, including thermodynamics, energy kinetics, crystallography, and equilibrium phases
· Covers essential chemistry and physics of underlying substrates, including steels, nickel-iron alloys, nickel-cobalt alloys, and titanium alloys
· Provides detailed guidance on wide variety of coating types, including those used against high temperature corrosion and oxidative degradation, as well as thermal barrier coatings
High Temperature Coatings demonstrates how to counteract the thermal effects of the rapid corrosion and degradation of exposed materials and equipment that can occur under high operating temperatures. This is the first true practical guide on the use of thermally-protective coatings for high-temperature applications, including the latest developments in materials used for protective coatings. It covers the make-up and behavior of such materials under thermal stress and the methods used for applying them to specific types of substrates, as well as invaluable advice on inspection and repair of existing thermal coatings.With his long experience in the aerospace gas turbine industry, the author has compiled the very latest in coating materials and coating technologies, as well as hard-to-find guidance on maintaining and repairing thermal coatings, including appropriate inspection protocols. The book will be supplemented with the latest reference information and additional support for finding more application-type and industry-type coatings specifications and uses, with help for the reader in finding more detailed information on a specific type of coating or a specific type of use.* Offers overview of the underlying fundamental concepts of thermally-protective coatings, including thermodynamics, energy kinetics, crystallography, and equilibrium phases* Covers essential chemistry and physics of underlying substrates, including steels, nickel-iron alloys, nickel-cobalt alloys, and titanium alloys* Provides detailed guidance on wide variety of coating types, including those used against high temperature corrosion and oxidative degradation, as well as thermal barrier coatings
Front Cover 1
High Temperature Coatings 4
Copyright Page 5
Table of Contents 8
ABOUT THE AUTHOR 10
PREFACE 12
Chapter 1 INTRODUCTION 14
1.1 HIGH-TEMPERATURE ENVIRONMENT 14
REFERENCES 17
Chapter 2 FUNDAMENTAL CONCEPTS 18
2.1 THERMODYNAMIC CONCEPTS 18
2.2 CONCEPT OF KINETICS 20
2.3 CRYSTAL STRUCTURE 24
2.4 EQUILIBRIUM PHASES 27
REFERENCES 29
Chapter 3 SUBSTRATE ALLOYS 30
3.1 TEMPERATURE CAPABILITY OF METALS AND ALLOYS 30
3.2 STRENGTHENING MECHANISMS 30
3.3 TITANIUM ALLOYS 32
3.4 STEELS 34
3.5 NICKEL–IRON ALLOYS 36
3.6 NICKEL AND COBALT BASE SUPERALLOYS 36
3.7 NEED FOR COATINGS 39
REFERENCES 40
Chapter 4 OXIDATION 42
4.1 OXIDATION PROCESS 42
4.2 OXIDATION TESTING AND EVALUATION 47
4.3 OXIDATION OF ALLOYS 54
4.4 ROLES OF SPECIFIC ALLOYING CONSTITUENTS 59
4.5 OXIDATION IN THE PRESENCE OF WATER VAPOR 63
4.6 OXIDATION OF POLYCRYSTALLINE VERSUS SINGLE-CRYSTAL ALLOYS 63
REFERENCES 64
Chapter 5 HIGH-TEMPERATURE CORROSION 66
5.1 HOT CORROSION PROCESSES 66
5.2 HOT CORROSION OF METALS AND ALLOYS 73
5.3 ROLE OF SPECIFIC ALLOYING ELEMENTS IN HOT CORROSION OF NI AND CO BASED ALLOYS AND COATINGS 75
5.4 INFLUENCE OF OTHER CONTAMINANTS 78
5.5 HOT CORROSION OF TBCs 80
5.6 HOT CORROSION-LIKE DEGRADATION 81
REFERENCES 82
Chapter 6 OXIDATION- AND CORROSION-RESISTANT COATINGS 84
6.1 REQUIREMENTS FOR METALLIC COATINGS 84
6.2 COATING PROCESSES 86
6.3 DIFFUSION COATINGS 86
6.4 OVERLAY COATINGS 109
6.5 OVERLAY COATINGS BY SPRAY AND ARC PROCESSES 110
6.6 OVERLAY COATINGS BY PHYSICAL VAPOR DEPOSITION (PVD) 129
6.7 RELATIVE OXIDATION AND CORROSION RESISTANCE OF COATINGS 147
6.8 MODELING OF OXIDATION AND CORROSION LIFE 150
6.9 INTERACTION OF EROSION–OXIDATION AND EROSION–CORROSION 161
REFERENCES 162
Chapter 7 THERMAL BARRIER COATINGS (TBCs) 168
7.1 TEMPERATURE REDUCTION BY TBCs 168
7.2 MATERIALS REQUIREMENT FOR TBCs 172
7.3 PARTIALLY STABILIZED ZIRCONIA 173
7.4 PLASMA SPRAYED TBCs 175
7.5 ELECTRON BEAM PHYSICAL VAPOR DEPOSITED (EB-PVD) TBCs 197
7.6 ENVIRONMENTAL BARRIER COATINGS (EBCs) 238
REFERENCES 239
Chapter 8 NONDESTRUCTIVE INSPECTION (NDI) OF COATINGS 246
8.1 NDI TECHNIQUES 246
REFERENCES 258
Chapter 9 COATINGS REPAIR 260
9.1 LIMITS TO COATINGS REPAIR 260
9.2 THE REPAIR PROCESS 261
9.3 RECOATING AND MATERIAL RESTORATION 263
REFERENCES 264
Chapter 10 FIELD AND SIMULATED FIELD EXPERIENCE 266
10.1 GAS TURBINE ENGINE APPLICATION 266
10.2 OTHER APPLICATIONS 283
REFERENCES 287
APPENDIX 290
AUTHOR INDEX 296
SUBJECT INDEX 306
Erscheint lt. Verlag | 1.4.2011 |
---|---|
Sprache | englisch |
Themenwelt | Naturwissenschaften ► Chemie ► Technische Chemie |
Technik ► Bauwesen | |
Technik ► Maschinenbau | |
ISBN-10 | 0-08-046955-8 / 0080469558 |
ISBN-13 | 978-0-08-046955-3 / 9780080469553 |
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