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  • BSI
    20/30373037 DC BS ISO 23071. Refractory products. Determination of reduced species in carbon containing refractories by XRD
    Edition: 2020
    $42.22
    / user per year

Description of 20/30373037 DC 2020

This standard describes methods for the determination of mineralogical phases often present as additives or reaction produced in carbon containing or graphitic refractory products by X-ray Diffraction (XRD) using a Bragg-Brentano diffractometer. It includes details of sample preparation and general principles for qualitative and quantitative analysis of mineralogical phase composition. Quantitative determination of α-Si3N4, β-Si3N4, AlN, aluminium metal, Al4C3, silicon metal, boron carbide and BN are described. The problems encountered with some determinations are highlighted.

Additional reduced species present in some refractories could include Al2O3â‹…AlN solid solutions (so called Alons), Si3N4â‹…SiO2 solid solutions and Si3N4â‹…Al2O3 solid solutions (Sialons). The presence of some of these solid solution components will cause problems with both identification and quantification as they are not well defined structures.

NOTE

For rationalisation of nitrogen containing phases, the total nitrogen content, analysed in accordance with EN 12698-1 is needed.



Standard Number20/30373037 DC
TitleBS ISO 23071. Refractory products. Determination of reduced species in carbon containing refractories by XRD
StatusDefinitive
Publication Date2020-02-06
Identical National Standard OfISO/DIS 23071
DescriptorsThermal expansion, Thermal resistance, Testing methods, Vibration testing, Refractory materials
ICS81.080 Refractories
CommitteeRPI/1
PublisherBSI
Pages13

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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