| Abstract | 第3-4页 |
| 摘要 | 第5-6页 |
| TABLE OF CONTENTS | 第6-9页 |
| LIST OF TABLES | 第9-10页 |
| LIST OF FIGURES | 第10-13页 |
| LIST OF ABBREVIATIONS | 第13-14页 |
| CHAPTER ONE INTRODUCTION | 第14-17页 |
| 1.1 BACKGROUND | 第14-15页 |
| 1.2 STATEMENT OF PROBLEMS | 第15-16页 |
| 1.3 OBJECTIVES OF THE STUDY | 第16页 |
| 1.4 SCOPE OF THE STUDY | 第16-17页 |
| CHAPTER TWO LITERATURE REVlEW | 第17-42页 |
| 2.1 CARBON-CARBON COMPOSITES | 第17页 |
| 2.2 REQUIREMENTS FOR OXIDATION PROTECTION SYSTEMS AND THEIR COMPONENTS | 第17-22页 |
| 2.2.1 Protection Layers/Primary Oxygen Barriers | 第20-21页 |
| 2.2.2 Functionally Active Layers | 第21-22页 |
| 2.3 MULLITE MATERIAL PROPERTIES AND USES | 第22-23页 |
| 2.4 MULLITE SYNTHESIS AND PROCESSING | 第23-33页 |
| 2.4.1 Mullite Synthesis by Sol-Gel Process:starting materials and factors that influence | 第24-27页 |
| 2.4.2 Monophasic gel | 第27-33页 |
| 2.5 MULLITE COATINGS | 第33-38页 |
| 2.5.1 Chemical Vapor-Deposited Coatings(CVD Coatings) | 第34-36页 |
| 2.5.2 Plasma- and Flame-sprayed Coatings | 第36-37页 |
| 2.5.3 Physical Vapor Deposition | 第37页 |
| 2.5.4 Pulsed-Laser Deposition(PLD) | 第37页 |
| 2.5.5 Aqueous Slurry Process | 第37-38页 |
| 2.5.6 Pack Cementation Process | 第38页 |
| 2.6 INFLUENCE OF ENVIRONMENTAL CONDITIONS ON THE STABILITY OF MULLITE | 第38-42页 |
| 2.6.1 Mullite Interaction in Oxidizing Conditions | 第38-39页 |
| 2.6.2 Mullite Interaction with Water Vapor-Rich Environments | 第39页 |
| 2.6.3 Mullite Interaction with Reducing Environments | 第39-40页 |
| 2.6.4 Mullite Interaction with CO/CO_2 Environments | 第40-42页 |
| CHAPTER THREE EXPERIMENTAL PROCEDURE | 第42-52页 |
| 3.1 MATERIALS AND PROCESSING REQUIREMENTS | 第42-44页 |
| 3.1.1 Substrate Preparation(Carbon-Carbon Composite) | 第42-43页 |
| 3.1.2 Coating Materials and Processing | 第43-44页 |
| 3.2 COATING METHODS | 第44-48页 |
| 3.2.1 Pack cementation(Diffusion)Coating | 第44-47页 |
| 3.2.2 Slurry Coating | 第47-48页 |
| 3.3 MULLITE SYNTHESIS | 第48-51页 |
| 3.3.1 Materials for Sol-Gel Synthesis | 第48页 |
| 3.3.2 Sol-Gel(Solution-Gelation)Process | 第48-50页 |
| 3.3.3 Chemical Reactions for the Sol-gel | 第50-51页 |
| 3.4 ISOTHERMAL OXIDATION TEST | 第51页 |
| 3.5 CHARACTERIZATION | 第51-52页 |
| CHAPTER FOUR FUSED MULLITE COATING FOR SILICON CARBIDE COATED CARBON-CARBON SUBSTRATES | 第52-66页 |
| 4.1 CARBON-CARBON COMPOSITE(C/C)SUBSTRATES | 第52-53页 |
| 4.2 SILICON CARBIDE(SIC)COATINGS | 第53-54页 |
| 4.3 PHASE EVALUATION AND MICROSTRUCTURAL ANALYSIS OF SILICON CARBIDE(SIC) COATING | 第54-55页 |
| 4.3.1 Phase Identification of silicon Carbide(SiC)Coating | 第54页 |
| 4.3.2 Surface and Cross-Section Structure of Silicon Carbide(SiC)Coating | 第54-55页 |
| 4.4 PHYSICAL AND CHEMICAL PROPERTIES OF FUSED MULLITE POWDER | 第55-56页 |
| 4.5 PHASE EVALUATION AND MICROSTRUCTURAL ANALYSIS OF FUSED MULLITE COATINGS | 第56-59页 |
| 4.5.1 Phase Identification of Fused Mullite Coatings on SiC Coated-C/C Substrates | 第57页 |
| 4.5.2 Surface Structure of Fused Mullite Coatings on SiC Coated-C/C Substrates | 第57-58页 |
| 4.5.3 Cross-Section of Fused Mullite Coatings on SiC Coated-C/C Substrates | 第58-59页 |
| 4.6 OXIDATION BEHAVIOR OF FUSED MULLITE COATINGS ON SIC COATED-C/C SUBSTRATES | 第59-64页 |
| 4.6.1 Isothermal Oxidation Curves for Fused Mullite Coatings on SiC Coated-C/C Substrates | 第59-61页 |
| 4.6.2 Microstructure of Fused Mullite Coatings on SiC Coated-C/C Substrates after Isothermal Oxidation | 第61-64页 |
| 4.7 CHAPTER SUMMARY | 第64-66页 |
| CHAPTER FIVE SYNTHESIZED MULLITE COATING FOR SILICON CARBIDE COATED CARBON-CARBON SUBSTRATES | 第66-81页 |
| 5.1 CARBON-CARBON COMPOSITE(C/C)SUBSTRATES | 第66页 |
| 5.2 SILICON CARBIDE(SIC)COATING | 第66-67页 |
| 5.3 PHASE EVALUATION AND MICROSTRUCTURAL ANALYSIS OF SILICON CARBIDE(SIC) COATING | 第67-69页 |
| 5.3.1 Phase Identification of Silicon Carbide(SiC)Coating | 第67-68页 |
| 5.3.2 Surface and Cross-Section Structure of Silicon Carbide(SiC)Coating | 第68-69页 |
| 5.4 SYNTHESIZED SOL-GEL MULLITE | 第69-71页 |
| 5.4.1 Phase Analysis of Synthesized Sol-Gel Mullite | 第69-70页 |
| 5.4.2 Physical and Chemical Properties of Sol-Gel Derived Mullite | 第70-71页 |
| 5.5 PHASE EVALUATION AND MICROSTRUCTURAL ANALYSIS OF SYNTHESIZED SOL-GEL MULLITE COATINGS | 第71-74页 |
| 5.5.1 Phase Identification of Synthesized Sol-Gel Mullite Coatings on SiC Coated-C/C Substrates | 第71-72页 |
| 5.5.2 Surface Structure of Synthesized Sol-Gel Mullite Coatings on SiC Coated-C/C Substrates | 第72-73页 |
| 5.5.3 Cross-Section of Synthesized Sol-Gel Mullite Coatings on SiC Coated-C/C Substrates | 第73-74页 |
| 5.6 OXIDATION BEHAVIOR OF SYNTHESIZED SoL-GEL MULLITE COATINGS ON SIC COATED-C/C SUBSTRATES | 第74-79页 |
| 5.6.1 Isothermal Oxidation Curves for Sol-Gel Mullite Coatings on SiC Coated-C/C Substrates | 第74-75页 |
| 5.6.2 Microstructure of Synthesized Sol-Gel Mullite Coatings on SiC Coated-C/C Substrates after Isothermal Oxidation | 第75-79页 |
| 5.7 CHAPTER SUMMARY | 第79-81页 |
| CHAPTER SIX CONCLUSION | 第81-84页 |
| 6.1 CONCLUSIONS | 第81-82页 |
| 6.2 RECOMMENDATIONS | 第82-84页 |
| REFERENCES | 第84-91页 |
| ACKNOWLEDGEMENT | 第91页 |
