Ehdotuksen tiedot

Tunnus:prEN 15991
Julkaisija:CEN
Komitea:CEN/TC 187
Komitean nimi:Refractory products and materials
Lausuntokierros alkanut:2024-06-30
Lausuntopyynnön määräaika:2024-08-29
Vastuuhenkilö:kari.silvennoinen(at)rt.fi
Ehdotuksen soveltamisala:
This document defines a method for the determination of the mass fractions of the elements Al, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powdered and granular silicon carbide. Dependent on element, emission lines, plasma conditions and sample mass, this test method is applicable for mass fractions of the above trace contaminations from about 0,1 mg/kg to about 1 000 mg/kg, after evaluation also from 0,001 mg/kg to about 5 000 mg/kg. NOTE 1 Generally for optical emission spectrometry using inductively coupled plasma and electrothermal vaporization (ETV-ICP-OES) there is a linear working range of up to four orders of magnitude. This range can be expanded for the respective elements by variation of the sample mass or by choosing emission lines with different sensitivity. After adequate verification, this document is also applicable to further metallic elements (excepting Rb and Cs) and some non-metallic contaminations (like P and S) and other allied non-metallic powdered or granular materials like carbides, nitrides, graphite, soot, coke, coal, and some other oxidic materials (see [1], [4], [5], [6], [7], [8], [9] and [10]). NOTE 2 There is positive experience with materials like, for example, graphite, boron carbide (B4C), silicon nitride (Si3N4), boron nitride (BN) and several metal oxides as well as with the determination of P and S in some of these materials.

Rekisteröidyttyäsi Lausuntopyyntöpalvelun käyttäjäksi voit lukea standardiehdotuksia ja kommentoida niiden sisältöä.

Kun haluat kommentoida lukemaasi tekstiä, valitse Lue ehdotus ja anna muutosehdotuksesi kohdassa Jätä kommentti.

Voit myös kertoa mielipiteesi standardiehdotuksesta kokonaisuutena. Ota kantaa siihen, hyväksytkö standardiehdotuksen vahvistamisen standardiksi.