Conference Proceedings Paper
SPECIFIC HEAT OF ZR-2.5NB PRESSURE TUBE MATERIAL MEASURED BY DIFFERENTIAL SCANNING CALORIMETRY (DSC)
35th Annual CNS Conference - 2015 May 31 - June 3
R. W. L. Fong (Canadian Nuclear Laboratories)
P. Neal (Canadian Nuclear Laboratories)
F. Fazeli (CanmetMATERIALS)
M. Aniolek (CanmetMATERIALS)
S. Gezgin (NETZSCH-Gerätebau GmbH)
Specific heats of Zr-2.5Nb pressure tube material have been measured by differential scanning
calorimetry (DSC) between 100°C and 1200°C using a heating and cooling rate of 20°C/min.
A hysteresis was observed in the specific heat curves between heating and cooling. A
maximum value occurs at a higher temperature on heating than on cooling, and the magnitude
is larger for cooling when compared to heating. The as-manufactured tube material showed a
small enthalpy change during first heating, attributed to decomposition of meta-stable β-Zr; and
this did not appear on second heating after being first heated to 1200°C. Further studies are
suggested to characterize the hysteresis behaviour.
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