Zkoušení keramických materiálů a výrobků - Přímé stanovení hmotnostních podílů nečistot v práškovém a zrnitém karbidu křemičitém optickou emisní spektroskopií (OES) po excitaci stejnosměrným obloukem (DC) (Norma k přímému použití jako ČSN).
NORMA vydaná dňa 1.12.2025
Designation standards: ČSN EN 15979
Classification mark: 726079
Catalog number: 522619
Publication date standards: 1.12.2025
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Czech technical standard
Kategória: Technické normy ČSN
This document describes a method for the analysis of mass fractions of the impurities Al, B, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powdered and grain-shaped silicon carbide of ceramic raw materials and ceramic materials. This application can also be extended to other metallic elements and other similar non-metallic powdered and grain-shaped materials such as carbides, nitrides, graphite, carbon blacks, cokes, carbon, as well as a number of further oxidic raw and basic materials after appropriate testing.
This testing procedure is applicable to mass fractions of the impurities mentioned above from approximately 1 mg/kg up to approximately 3 000 mg/kg, after verification. In some cases, it is possible to extend the range up to 5 000 mg/kg depending on element, emission lines, DCArc parameters, and sample mass