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BS ISO 9286:2021 – TC:2022 Edition

BS ISO 9286:2021 – TC:2022 Edition

$186.33

Tracked Changes. Abrasive grains and crude. Chemical analysis of silicon carbide

Published By Publication Date Number of Pages
BSI 2022 82
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This document specifies the chemical analysis of silicon-carbide-based abrasive grains and crudes. It is applicable for the determination of the surface impurities of abrasives grains and the determination of the SiC content of crushed crude when the silicon carbide content is greater than 95 % (mass fraction).

PDF Catalog

PDF Pages PDF Title
1 30446281
53 A-30400952
54 National foreword
58 Foreword
61 1 Scope
2 Normative references
3 Terms and definitions
4 Analysis of surface impurities
4.1 General
4.2 Sampling
4.3 Preparation of sample
4.3.1 Fine grains
62 4.3.2 Coarse Grains
4.3.3 Crude
63 4.4 Determination of surface carbon (Csurf/free)
4.4.1 Principle
4.4.2 Detection by gravimetric method
65 4.4.3 Detection by infrared absorption (IR)
66 4.5 Determination of surface silicon dioxide (SiO2surf)
4.5.1 General
4.5.2 Detection by HF/KF dissolving reactions
68 4.5.3 Hydrofluoric acid loss
69 4.5.4 Molybdenum blue spectrophotometry
71 4.6 Determination of surface silicon (Sisurf)
4.6.1 General
72 4.6.2 Hydrogen gas volumetric method
74 4.6.3 Silver displacement method
76 4.6.4 Molybdenum blue spectrophotometry
77 4.7 Determination of loss on acid treatment (LAT)
4.7.1 Principle
4.7.2 Reagents
4.7.3 Apparatus
4.7.4 Procedure
4.7.5 Expression of results
78 4.8 Determination of total carbon (Ctotal)
4.8.1 Principle
4.8.2 Detection by gravimetric method
79 4.8.3 Detection by infrared absorption (IR)
4.9 Determination of surface iron (Fesurf), surface aluminium (Alsurf), surface calcium (Casurf) and surface magnesium (Mgsurf)
4.9.1 Principle
4.9.2 Atomic absorption spectrometry method (AAS)
4.9.3 Induced coupled plasma method (ICP)
80 4.10 Calculation of the content of residual silicon carbide (SiCR)
4.10.1 Residual SiC from LAT
4.10.2 Residual SiC from analysed impurities
4.10.3 Residual SiC from total and free carbon
81 5 Test report

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BS ISO 9286:2021 - TC
$186.33