Oxide-based fiber-reinforced ceramic-matrix composites : principles and materials / by Bilge Saruhan.

Format:

Book

Author/Creator:

Saruhan, Bilge, 1957-

Language:

English

Subjects (All):

Fiber-reinforced ceramics.

Oxide ceramics.

Physical Description:

xvi, 199 pages : illustrations ; 25 cm

Place of Publication:

Boston : Kluwer Academic Publishers, [2003]

Contents:

1.1 Backgroung and History 1

1.2 Application Areas 2

2 Characteristics of Oxide-Based Fiber-Reinforced Composites 11

2.1 Material Characteristics for Composites 11

2.1.1.1 Elastic Properties 13

2.1.1.2 Tensile Stress-Strain Behavior and Simple Rule of Mixtures Model 13

2.1.1.3 Pseudo-Plasticity 15

2.1.1.4 Toughening mechanisms and debonding criteria in fiber-reinforced composites 18

2.1.2 Thermal Characteristics 22

2.1.2.1 Thermal Expansion 22

2.1.2.2 Thermal Conductivity 23

2.1.2.3 Diffusion Data 25

2.2 Constituents of Fiber-Reinforced Ceramic-Matrix Composites 27

2.2.1 Oxide Matrices 27

2.2.2 Oxide Fibers 30

2.2.3 Interphases 37

3 Fabrication of Oxide-Matrix Composites 47

3.1 Background and General Attributes to Processing of Oxide Based Fiber-Reinforced Composites 49

3.2 Fabrication Steps 50

3.2.1 Fiber Architecture and Pre-forms 50

3.2.2 Methods for Fiber Coating 51

3.2.2.1 Fiber Coating by Chemical Vapor Deposition (CVD) 51

3.2.2.2 Fiber Coating by Chemical Liquid Deposition (LD) 53

3.2.2.3 Heterocoagulation Technique 56

3.2.3 Matrix Infiltration and Impregnation 57

3.2.4 Matrix Development with Alumina 59

3.2.4.1 Reaction Bonded Alumina (RBAO) 60

3.2.4.2 Directed Metal Infiltration or Molten Salt Infiltration 63

3.2.5 Matrix Development with Mullite 66

3.2.5.1 Reaction-Bonded Mullite (RBM) 68

3.2.5.2 Precursor derived mullite matrices 72

3.2.5.3 Electrophoresis 76

4 Tailoring and Control of Interphase 89

4.2.1 Weak Interfaces through Low Toughness Oxide Coatings 91

4.2.2 Easy-Cleavage and Layered Oxide Coatings 93

4.2.3 Fugitive (Carbon) Coatings 95

4.2.4 Porous Coatings 101

4.2.5 Refractory Metal Coatings 106

4.3 Monazite Based Weak Interphase 107

4.4 Hexaluminate Based Easy-Cleavage Interphase 112

4.4.1 Definition of Magnetoplumbite Crystal Structure and La[subscript 2]O[subscript 3]-Al[subscript 2]O[subscript 3] phase diagram 112

4.4.2 Synthesis and Formation of Pure Phase Magnetoplumbites 114

4.4.3 Improved Crystallization of the Sol-Gel-Synthesized Magnetoplumbites 117

4.4.3.1 Divalent Metal Oxide Doping 118

4.4.3.2 Seeding of Thin Fiber-Coatings 121

4.4.4 Grain Growth and Texturing in Hexaluminate Thin Films 124

4.4.5 Comments on Crystallization and Texturing in Hexaluminate Interphases 126

4.5 Mechanical Evaluation of Composites with an Interphase 131

4.5.1 Composites with Monazite Interphase 132

4.5.2 Composites with Hexaluminate Interphase 135

4.5.3 Composites with Single Fugitive and Fugitive/Oxide-Double Interfacial Layers 136

4.6 Discussion on the Role of Interphase and its Mechanical, Thermal and Chemical Requirements 144

5 Porous Matrix Composites 155

5.1 Interphase-Free Oxide-Based Fiber-Reinforced Composites 155

5.1.1 Development of Porous Matrix Composites 156

5.1.2 Mechanical Evaluation of Porous Matrix Composites 164

5.2 Fiber Laminate Composites (Hybrid Ceramic Composites) 175

5.2.1 Development of Hybrid Ceramic Composites 176

5.2.2 Mechanical Interpretation of Hybrid Composites 180

5.3 Discussion on Interphase-Free Oxide-Based Composites 185.

Notes:

Includes bibliographical references and index.

ISBN:

1402073496

OCLC:

50948453