Comparison of three Co-C fixed points constructed using different crucible lining materials

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Proceedings titleTemperature : its measurement and control in science and industry, volume 8: Proceedings of the Ninth International Temperature Symposium
Series titleAIP Conference Proceedings; Volume 1552
ConferenceNinth International Temperature Symposium, 19–23 March 2012, Los Angeles, California, USA
Pages369373; # of pages: 5
Subjecthigh temperature fixed points; radiation thermometry; Co-C
AbstractThe melting plateaus of three Co-C fixed points for radiation thermometry with different constructions were measured and compared. Two of the fixed points were of the hybrid type and contained either carbon composite cloth or pyrolytic graphite sheet between the graphite sleeve and the crucible wall. The third fixed point contained only the graphite sleeve. Little difference was found in the shapes of the melting curves between the fixed points. Given a comparison uncertainty of 37 mK (k = 1), there were, however, significant differences in the melting temperatures determined for each of the fixed points. Over three days of measurement, the melting temperature of the fixed point filled using the pyrolytic sheet drifted up by nearly 140 mK.
Publication date
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NRC numberNRC-MSS-156482169
NPARC number21268760
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Record identifierfa02e9ba-d814-40c3-8073-b6dbbd9e40ba
Record created2013-11-12
Record modified2016-05-09
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