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<p>This document describes the ceramographic preparation of uranium dioxide (UO2) sintered pellets for qualitative and quantitative microstructure examinations.</p>
<p>These examinations can be carried out before and after thermal or chemical etching.</p>
<p>They enable</p>
<p>— observations of fissures, inter- or intra-granular pores and inclusions, and</p>
<p>— measurement of pore and grain size and measurement of pore and grain size distributions.</p>
<p>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.</p>
<p>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.</p>
Reģistrācijas numurs (WIID)
73165
Darbības sfēra
<p>This document describes the ceramographic preparation of uranium dioxide (UO2) sintered pellets for qualitative and quantitative microstructure examinations.</p>
<p>These examinations can be carried out before and after thermal or chemical etching.</p>
<p>They enable</p>
<p>— observations of fissures, inter- or intra-granular pores and inclusions, and</p>
<p>— measurement of pore and grain size and measurement of pore and grain size distributions.</p>
<p>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.</p>
<p>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.</p>
