BS EN 15979:2011
Current
The latest, up-to-date edition.
Testing of ceramic raw and basic materials. Direct determination of mass fractions of impurities in powders and granules of silicon carbide by OES by DC arc excitation
Hardcopy , PDF
English
28-02-2011
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Foreword
1 Scope
2 Principle
3 Spectrometry
4 Apparatus
5 Reagents
6 Sampling and preparation of test samples
7 Calibration
8 Procedure
9 Calculation
10 Expression of results
11 Precision
12 Test report
Annex A (informative) - Results of inter-laboratory study
Annex B (informative) - Wavelength and working range
Annex C (informative) - Possible interferences and their
elimination
Annex D (informative) - Information regarding the evaluation of
the uncertainty of the mean value
Annex E (informative) - Commercial certified reference materials
Bibliography
Specifies the method for the analysis of mass fractions of the impurities Al, B, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powder- and grain-shaped silicon carbide of ceramic raw and basic materials.
| Committee |
RPI/1
|
| DevelopmentNote |
Supersedes 09/30187538 DC. (02/2011)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This European Standard describes the method for the analysis of mass fractions of the impurities Al, B, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powder and grain-shaped silicon carbide of ceramic raw and basic materials. This application can also be extended to other metallic elements and other similar non-metallic powder 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. NOTE There are positive interferences for materials such as e.g. graphite, B4C, BN, WC and several refractory metal oxides. 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 may be possible to extend the range up to 5 000 mg/kg depending on element, wavelength, arc parameter, and sample weight.
| Standards | Relationship |
| EN 15979:2011 | Identical |
| ISO 5022:1979 | Shaped refractory products — Sampling and acceptance testing |
| EN ISO 21068-1:2008 | Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 1: General information and sample preparation (ISO 21068-1:2008) |
| ISO 5725-4:1994 | Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method |
| ISO 21068-1:2008 | Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 1: General information and sample preparation |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| ISO 8656-1:1988 | Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling scheme |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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