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ISO 19634:2017 pdf free

ISO 19634:2017 pdf free.Fine ceramics (advanced ceramics, advanced technical ceramics)一Ceramic composites
This document defines the symbols to be used to represent physical, mechanical and thermal characteristics, as determined by methods described in relevant ISO publications, for ceramic matrix composites. It is aimed at avoiding confusion in reporting measurements and characteristics of products.
Where possible, the definitions are in accordance with the relevant parts of ISO 80000. In addition, the symbols used in undertaking measurements of these characteristics are also defined.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 80000-4, Quantities and units一Part 4: Mechanics
ISO 80000-5, Quantities and units一Part 5: Thermodynamics
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 80000-4 and ISO 80000-5 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
一IEC Electropedia: available at http://www.electropedia.org/
一ISO Online browsing platform: available at htps://www.iso.org/obp
3.1 ceramic matrix composite
ceramic, carbon or glass matrix containing reinforcement distributed in one or more spatial directions
Note 1 to entry: Composites with continuous reinforcements constitute a specific class of these materials. Several subclasses of ceramic matrix composites with continuous reinforcements can be distinguished.
3.2 nomenclature
The symbol F/I/M applies usually to ceramic matrix composites:
一Findicates the chemical nature of fibrous reinforcement: C stands for carbon, SiC for silicon carbide,Al2O3 for alumina, etc.
一Iindicates the chemical nature of fibre/ matrix interphase: C stands for carbon, BN for boron nitride,LaPO4 for monazite, etc.
一Mindicates the chemical nature of matrix: C for carbon, SiC for silicon carbide, Al2O3 for alumina.
EXAMPLE 1 A ceramic matrix composite composed of a silicon carbide fibre, a carbon interphase and a silicon carbide matrix is denoted by SiC/C/SiC.ISO 19634 pdf download.

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