This chapter contains sections titled:

    Ceramic Matrix Composites – the Key Materials for Re‐Entry from Space to Earth

    Introduction and Overview

    Liquid Silicon Infiltration: Process Development

    Microstructural Design of C/C‐SiC Composites

    C/C‐SiC Composites Derived from As‐Received Carbon Fibres

    C/C‐SiC Composites Derived from Thermally Pre‐Treated Carbon Fibres

    Graded C/C‐SiC Composites

    C/C‐SiC Composites Derived from Graphitized C/C

    Macroscopic Design Aspects

    Dimensional Stability

    Modular Construction by In‐Situ Joining

    Thermophysical Characterization of C/C‐SiC

    Methods to Measure Thermophysical Properties

    Materials and Specimen Preparation

    Specific Heat Capacity

    Thermal Conductivity

    Spectral and Total Emissivity

    Thermomechanical Characterization of C/C‐SiC

    Failure Mechanism of C/C‐SiC Materials

    Influence of the Temperature on the Stress‐Strain Behaviour

    Behaviour of Reusable Heat Shield Materials under Re‐Entry Conditions

    Principles and Modelling of Heterogeneous Reactions

    Heterogeneous Catalysis

    Redox Reactions Including Active and Passive Oxidation

    Surface Reaction Model Applied to MIRKA Re‐Entry Flow

    Characterization of High‐Temperature Oxidation and Catalytic Behaviour of TPS Materials

    Experimentally Observed Influence of Catalytic Efficiency

    Oxidation Behaviour

    Developments and Investigations of Protection Layers for Reusable Heat Shield Materials

    Production and Characteristics of Protection Layers

    Diagnostics for the Tests of the Protection Layers in the Plasma Wind Tunnel

    Protection Material Tests and Results

    Design and Evaluation of Fibre Ceramic Structures

    Introduction

    Concept Design and Manufacturing Studies

    Manufacturing

    Test

    Plasma Sprayed Yttrium Silicates for Oxidation Protection of C/C‐SiC Panels

    Flight Experiment

    Measuring Model Deflections by Thermo‐Mechanical Loads in a Plasma Wind Tunnel

    Overview

    Model Design

    Adaptation of the HTGM to the L3K Facility

    Results

    Material Description of Fibre Ceramics

    Phenomena in C/C‐SiC Materials

    Phenomenological Model

    Micromechanically Based Phenomenological Model

    Functionally Graded Materials

    Conclusions


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    Title :

    High‐Temperature Materials and Hot Structures




    Publication date :

    2005-05-09


    Size :

    82 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





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