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BS EN ISO 16793:2021

BS EN ISO 16793:2021

$102.76

Nuclear fuel technology. Guidelines for ceramographic preparation of UO2 sintered pellets for microstructure examination

Published By Publication Date Number of Pages
BSI 2021 16
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This document describes the ceramographic preparation of uranium dioxide (UO2) sintered pellets for qualitative and quantitative microstructure examinations.

These examinations can be carried out before and after thermal or chemical etching.

They enable

  • observations of fissures, inter- or intra-granular pores and inclusions, and

  • measurement of pore and grain size and measurement of pore and grain size distributions.

The measurement of average grain size can be carried out using a classical counting method as described in ISO 2624 or ASTM E112[3], i.e. intercept procedure, comparison with standard grids or reference photographs.

The measurement of pore-size distributions is usually carried out by an automatic image analyser. If the grain-size distributions are also measured with an image analyser, it is recommended that thermal etching be used to reveal the grain structure uniformly throughout the whole sample.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
8 5 Procedures
5.1 General
5.2 Sample preparation without mounting
5.3 Sample preparation with mounting, not needing subsequent dismounting
5.4 Sample preparation with mounting, needing subsequent dismounting
6 Apparatus
9 7 Reagents and consumables
10 8 Methods
8.1 Sectioning
8.2 Mounting
8.3 Grinding
11 8.4 Polishing
8.5 Dismounting
9 Etching
9.1 Introduction
9.2 Chemical etching
9.3 Thermal etching
14 Bibliography

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BS EN ISO 16793:2021
$102.76