SPECIFIC HEAT OF ZR-2.5NB PRESSURE TUBE MATERIAL MEASURED BY DIFFERENTIAL SCANNING CALORIMETRY (DSC)
35th Annual CNS Conference - 2015 May 31 - June 3


Presented at:
35th Annual CNS Conference
2015 May 31 - June 3
Location:
Saint John, Canada
Session Title:
2B3 - Chemistry and Materials

Authors:
R. W. L. Fong (Canadian Nuclear Laboratories)
P. Neal (Canadian Nuclear Laboratories)
F. Fazeli (CanmetMATERIALS)
M. Aniolek (CanmetMATERIALS)
S. Gezgin (NETZSCH-Gerätebau GmbH)
  

Abstract

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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