BS EN 12698-1:2007
Current
The latest, up-to-date edition.
Chemical analysis of nitride bonded silicon carbide refractories Chemical methods
Hardcopy , PDF
English
30-04-2007
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Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Methods for determination
5 Sampling
6 Determination of free aluminium
6.1 Principle
6.2 Reagents
6.3 Apparatus
6.4 Sample preparation
6.5 Procedure
6.6 Calculation and expression of results
7 Determination of total nitrogen
7.1 General
7.2 Determination of total nitrogen by carrier gas
fusion (CGF)
7.3 Determination of total nitrogen content by fusion
decomposition
7.4 Determination of total nitrogen content by Kjeldahl
distillation
7.5 Determination of total nitrogen by microwave digestion
8 Determination of free silicon
9 Determination of free silica
9.1 Principle
9.2 Reagents
9.3 Apparatus
9.4 Sample preparation
9.5 Procedure
9.6 Determination
9.7 Calculation and expression of SiO[2] content
9.8 Precision
10 Determination of carbon
10.1 Determination of the total carbon, C[t]
10.2 Determination of free carbon, C[free]
11 Calculation of silicon carbide content
12 Determination of free alumina (Al[2]O[3])
12.1 Principle
12.2 Reagents
12.3 Apparatus
12.4 Procedure
12.5 Calculation and expression of results
12.6 Precision
Annex A (informative) Determination of free carbon using
the hot chromic sulfuric iodic acid method (10.2.1):
Explanation for the evaluation of the different
possible detection methods
A.1 Coulometric detection system
A.2 Infrared absorption detection system
A.3 Conductometric detection system
Bibliography
Specifies the methods for the analysis of all refractory products containing nitride and oxynitride bonded silicon carbide, irrespective of the silicon carbide level.
| Committee |
RPI/1
|
| DevelopmentNote |
Reviewed and confirmed by BSI, July 2012. (06/2012)
|
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This standard describes the methods for the analysis of all refractory products containing nitride and oxynitride bonded silicon carbide, irrespective of the silicon carbide level. It includes details of sample preparation, general principles of chemical analysis and detailed methods for the determination of carbon, silicon carbide, free aluminium, free silicon, total nitrogen and oxygen.
| Standards | Relationship |
| NS EN 12698-1 : 1ED 2007 | Identical |
| NBN EN 12698-1 : 2007 | Identical |
| UNE-EN 12698-1:2007 | Identical |
| I.S. EN 12698-1:2007 | Identical |
| SN EN 12698-1 : 2007 | Identical |
| NEN EN 12698-1 : 2007 | Identical |
| EN 12698-1:2007 | Identical |
| UNI EN 12698-1 : 2007 | Identical |
| DIN EN 12698-1:2007-06 | Identical |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| ISO 3310-1:2016 | Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth |
| ISO 5022:1979 | Shaped refractory products — Sampling and acceptance testing |
| ISO 12677:2011 | Chemical analysis of refractory products by X-ray fluorescence (XRF) Fused cast-bead method |
| ISO 836:2001 | Terminology for refractories |
| EN 12475-4:1998 | Classification of dense shaped refractory products - Part 4: Special products |
| EN 12698-2:2007 | Chemical analysis of nitride bonded silicon carbide refractories - Part 2: XRD methods |
| EN 955-2 : 1995 | CHEMICAL ANALYSIS OF REFRACTORY PRODUCTS - PART 2: PRODUCTS CONTAINING SILICA AND/OR ALUMINA (WET METHOD) |
| EN ISO 12677:2011 | Chemical analysis of refractory products by X-ray fluorescence (XRF) - Fused cast-bead method (ISO 12677:2011) |
| ENV 955-4 : 1997 | CHEMICAL ANALYSIS OF REFRACTORY PRODUCTS - PRODUCTS CONTAINING SILICA AND/OR ALUMINA (ANALYSIS BY FLAME ATOMIC ABSORPTION SPECTROMETRY (FAAS) AND INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROGRAPHY ICP)) |
| EN 725-3:2007 | Advanced technical ceramics - Methods of test for ceramic powders - Part 3: Determination of the oxygen content of non-oxides by thermal extraction with a carrier gas |
| ISO 8656-1:1988 | Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling scheme |
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