Skip to main content
padlock icon - secure page this page is secure

Thermophysical Properties of Laser‐Sintered Zr–ZrB

Buy Article:

$52.00 + tax (Refund Policy)

Thermophysical properties between 293 and 1863 K were investigated for laser‐sintered Zr–ZrB2 cermets containing 30, 50, and 70 wt% Zr. The measured values of coefficient of thermal expansion of Zr–ZrB2 cermets were larger than the predicted values due to the effect of Zr–O solid solution, which was formed during laser sintering. The order–disorder phase transition of Zr–O solid solution resulted in the sharp increase in heat capacity between 625 and 675 K. Thermal conductivities were calculated from measured densities, heat capacities, and thermal diffusivities. Thermal diffusivities at 473 K were 14.0, 12.2, and 8.0 mm2/s for 30Zr–ZrB2, 50Zr–ZrB2, and 70Zr–ZrB2, respectively. Thermal conductivities at 473 K were 38, 31, and 20 W·(m·K)−1 for 30Zr–ZrB2, 50Zr–ZrB2, and 70Zr–ZrB2, respectively. Electron contribution to thermal conductivity of the 70Zr–ZrB2 cermet was determined using electrical resistivity measurements, which shows that total thermal conductivity mostly came from the electron contribution at high temperatures (1073–1473 K) while the phonon contribution was very small.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904 2: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

Publication date: August 1, 2011

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more