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| Research on Reproducibility and Temperature Plateaus for Fe-C Eutectic Point |
| LV Guo-yi,LIU Yu-sheng,YANG Yong-jun |
| AVIC Changcheng Institute of Metrology & Measurement, Beijing 100095, China |
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Abstract Above the freezing point of copper (1084.62 ℃) in the current temperature calibration system, there is no other pure metal fixed point. But the metal-carbon eutectic points, as a new type of fixed points with excellent reproducibility, add temperature fixed points above the freezing point of copper and develop the current level of high temperature measuring value transfer. Although the Fe-C eutectic point is very close to the freezing point of copper, it is still very useful to provide valuable experience for the perfusion and repetition of higher eutectic points. A one-class standard S-type thermocouple is used for measuring the temperature plateaus of Fe-C eutectic point, and the eutectic point temperatures fluctuate is in the range of 1152.4~1152.5 ℃.
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Received: 27 May 2015
Published: 10 December 2015
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2016, Vol. 37 
