ASTM C1793 - 15

    Standard Guide for Development of Specifications for Fiber Reinforced Silicon Carbide-Silicon Carbide Composite Structures for Nuclear Applications

    Active Standard ASTM C1793 | Developed by Subcommittee: C28.07

    Book of Standards Volume: 15.01


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    Significance and Use

    4.1 Composite materials consist by definition of a reinforcement phase in a matrix phase. In addition, ceramic matrix composites (CMCs) often contain measurable porosity which interacts with the reinforcement and matrix. And SiC-SiC composites often use a fiber interface coating which has an important mechanical function. The composition and structure of these different constituents in the CMC are commonly tailored for a specific application with detailed performance requirements. The tailoring involves the selection of the reinforcement fibers (composition, properties, morphology, etc), the matrix (composition, properties, and morphology), the composite structure (component fractions, reinforcement architecture, interface coatings, porosity structure, microstructure, etc.), and the fabrication conditions (forming, assembly, forming, densification, finishing, etc.). The final engineering properties (physical, mechanical, thermal, electrical, etc) can be tailored across a broad range with major directional anisotropy in the properties.

    4.2 Specifications for specific CMC components covering materials, material processing, and fabrication procedures are developed to provide a basis for fabricating reproducible and reliable structures. Designer/users/producers have to write CMC specifications for specific applications with well-defined composition, structure, properties and processing requirements. But with the extensive breadth of selection in composition, structure, and properties in CMCs, it is virtually impossible to write a "generic" CMC specification applicable to any and all CMC applications that has the same type of structure and details of the commonly-used specifications for metal alloys. This guide is written to assist the designer/user/producer in developing a comprehensive and detailed material specification for a specific CMC application/component with a specific focus on nuclear applications.

    4.3 The purpose of this guide is to provide guidance on how to specify the constituents, the structure, the desired engineering properties (physical, chemical, mechanical, durability, etc), methods of testing, manufacturing process requirements, the quality assurance requirements, and traceability for SiC-SiC composites for nuclear reactor applications. The resulting specification may be used for the design, production, evaluation, and qualification of SiC-SiC composites for structures in nuclear reactors.

    4.4 The guide is applicable to SiC-SiC composites with flat plate, rectangular bar, round rod, and round tube geometries.

    4.5 This guide may also be applicable to the development of specifications for SiC-SiC composites used for other structural applications, discounting the nuclear-specific chemical purity and irradiation behavior requirements.

    1. Scope

    1.1 This document is a guide to preparing material specifications for silicon carbide fiber/silicon carbide matrix (SiC-SiC) composite structures (flat plates, rectangular bars, round rods, and tubes) manufactured specifically for structural components and for fuel cladding in nuclear reactor core applications. The SiC-SiC composites consist of silicon carbide fibers in a silicon carbide matrix produced by liquid infiltration/pyrolysis and/or by chemical vapor infiltration.

    1.2 This guide provides direction and guidance for the development of a material specification for a specific SiC-SiC composite component or product for nuclear reactor applications. The guide considers composite constituents and structure, physical and chemical properties, mechanical properties, thermal properties, performance durability, methods of testing, materials and fabrication processing, and quality assurance. The SiC-SiC composite materials considered here would be suitable for nuclear reactor core applications where neutron irradiation-induced damage and dimensional changes are significant design considerations. (1-8)2

    1.3 The component material specification is to be developed by the designer/purchaser/user. The designer/purchaser/user shall define and specify in detail any and all application-specific requirements for design, manufacturing, performance, and quality assurance of the ceramic composite component. Additional specification items for a specific component, beyond those listed in this guide, may be required based on intended use, such as geometric tolerances, permeability, bonding, sealing, attachment, and system integration.

    1.4 This guide is specifically focused on SiC-SiC composite components and structures with flat plate, solid rectangular bar, solid round rod, and tubular geometries.

    1.5 This guide may also be applicable to the development of specifications for SiC-SiC composites used for other structural applications, discounting the nuclear-specific chemical purity and irradiation behavior factors.

    1.6 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C242 Terminology of Ceramic Whitewares and Related Products

    C559 Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles

    C577 Test Method for Permeability of Refractories

    C611 Test Method for Electrical Resistivity of Manufactured Carbon and Graphite Articles at Room Temperature

    C625 Practice for Reporting Irradiation Results on Graphite

    C714 Test Method for Thermal Diffusivity of Carbon and Graphite by Thermal Pulse Method

    C769 Test Method for Sonic Velocity in Manufactured Carbon and Graphite Materials for Use in Obtaining Youngs Modulus

    C816 Test Method for Sulfur in Graphite by Combustion-Iodometric Titration Method

    C838 Test Method for Bulk Density of As-Manufactured Carbon and Graphite Shapes

    C1039 Test Methods for Apparent Porosity, Apparent Specific Gravity, and Bulk Density of Graphite Electrodes

    C1145 Terminology of Advanced Ceramics

    C1179 Test Method for Oxidation Mass Loss of Manufactured Carbon and Graphite Materials in Air

    C1198 Test Method for Dynamic Youngs Modulus, Shear Modulus, and Poissons Ratio for Advanced Ceramics by Sonic Resonance

    C1233 Practice for Determining Equivalent Boron Contents of Nuclear Materials

    C1239 Practice for Reporting Uniaxial Strength Data and Estimating Weibull Distribution Parameters for Advanced Ceramics

    C1259 Test Method for Dynamic Youngs Modulus, Shear Modulus, and Poissons Ratio for Advanced Ceramics by Impulse Excitation of Vibration

    C1274 Test Method for Advanced Ceramic Specific Surface Area by Physical Adsorption

    C1275 Test Method for Monotonic Tensile Behavior of Continuous Fiber-Reinforced Advanced Ceramics with Solid Rectangular Cross-Section Test Specimens at Ambient Temperature

    C1291 Test Method for Elevated Temperature Tensile Creep Strain, Creep Strain Rate, and Creep Time-to-Failure for Advanced Monolithic Ceramics

    C1292 Test Method for Shear Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperatures

    C1337 Test Method for Creep and Creep Rupture of Continuous Fiber-Reinforced Advanced Ceramics Under Tensile Loading at Elevated Temperatures

    C1341 Test Method for Flexural Properties of Continuous Fiber-Reinforced Advanced Ceramic Composites

    C1358 Test Method for Monotonic Compressive Strength Testing of Continuous Fiber-Reinforced Advanced Ceramics with Solid Rectangular Cross-Section Test Specimens at Ambient Temperatures

    C1359 Test Method for Monotonic Tensile Strength Testing of Continuous Fiber-Reinforced Advanced Ceramics With Solid Rectangular Cross-Section Test Specimens at Elevated Temperatures

    C1360 Practice for Constant-Amplitude, Axial, Tension-Tension Cyclic Fatigue of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperatures

    C1425 Test Method for Interlaminar Shear Strength of 1-D and 2-D Continuous Fiber-Reinforced Advanced Ceramics at Elevated Temperatures

    C1468 Test Method for Transthickness Tensile Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperature

    C1470 Guide for Testing the Thermal Properties of Advanced Ceramics

    C1525 Test Method for Determination of Thermal Shock Resistance for Advanced Ceramics by Water Quenching

    C1557 Test Method for Tensile Strength and Youngs Modulus of Fibers

    C1683 Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics

    C1773 Test Method for Monotonic Axial Tensile Behavior of Continuous Fiber-Reinforced Advanced Ceramic Tubular Test Specimens at Ambient Temperature

    D2766 Test Method for Specific Heat of Liquids and Solids

    D3171 Test Methods for Constituent Content of Composite Materials

    D3529/D3529M Test Method for Matrix Solids Content and Matrix Content of Composite Prepreg

    D3800 Test Method for Density of High-Modulus Fibers

    D3878 Terminology for Composite Materials

    D4018 Test Methods for Properties of Continuous Filament Carbon and Graphite Fiber Tows

    D4284 Test Method for Determining Pore Volume Distribution of Catalysts and Catalyst Carriers by Mercury Intrusion Porosimetry

    D4850 Terminology Relating to Fabrics and Fabric Test Methods

    D5528 Test Method for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites

    D5600 Test Method for Trace Metals in Petroleum Coke by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)

    D5766 Test Method for Open-Hole Tensile Strength of Polymer Matrix Composite Laminates

    D5961 Test Method for Bearing Response of Polymer Matrix Composite Laminates

    D6484 Test Method for Open-Hole Compressive Strength of Polymer Matrix Composite Laminates

    D6507 Practice for Fiber Reinforcement Orientation Codes for Composite Materials

    D6671 Test Method for Mixed Mode I-Mode II Interlaminar Fracture Toughness of Unidirectional Fiber Reinforced Polymer Matrix Composites

    D7136 Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer Matrix Composite to a Drop-Weight Impact Event

    D7137 Test Method for Compressive Residual Strength Properties of Damaged Polymer Matrix Composite Plates

    D7219 Specification for Isotropic and Near-isotropic Nuclear Graphites

    D7542 Test Method for Air Oxidation of Carbon and Graphite in the Kinetic Regime

    E6 Terminology Relating to Methods of Mechanical Testing

    E111 Test Method for Youngs Modulus, Tangent Modulus, and Chord Modulus

    E132 Test Method for Poissons Ratio at Room Temperature

    E143 Test Method for Shear Modulus at Room Temperature

    E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer

    E261 Practice for Determining Neutron Fluence, Fluence Rate, and Spectra by Radioactivation Techniques

    E289 Test Method for Linear Thermal Expansion of Rigid Solids with Interferometry

    E408 Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter Techniques

    E423 Test Method for Normal Spectral Emittance at Elevated Temperatures of Nonconducting Specimens

    E1269 Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry

    E1309 Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases

    E1461 Test Method for Thermal Diffusivity by the Flash Method

    E1922 Test Method for Translaminar Fracture Toughness of Laminated and Pultruded Polymer Matrix Composite Materials

    E2586 Practice for Calculating and Using Basic Statistics


    ICS Code

    ICS Number Code 83.120 (Reinforced plastics)

    UNSPSC Code

    UNSPSC Code 26142100(Nuclear reactor equipment)


    Referencing This Standard
    Link Here
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    DOI: 10.1520/C1793-15

    Citation Format

    ASTM C1793-15, Standard Guide for Development of Specifications for Fiber Reinforced Silicon Carbide-Silicon Carbide Composite Structures for Nuclear Applications, ASTM International, West Conshohocken, PA, 2015, www.astm.org

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