Thermal conductivity and interface thermal conductance of amorphous and crystalline Zr47Cu31Al13Ni9 alloys with a Y2O3 coating

We examine the thermal conductivity k and interface thermal conductance G for amorphous and crystalline Zr47Cu31Al13Ni9 alloys in contact with polycrystalline Y2O3. Using time-domain thermoreflectance, we find k=4.5 W m(-1) K-1 for the amorphous metallic alloy of Zr47Cu31Al13Ni9 and k=5.0 W m(-1) K-1 for the crystalline Zr47Cu31Al13Ni9. We also measure G=23 MW m(-2) K-1 for the metallic glass/Y2O3 interface and G=26 MW m(-2) K-1 for the interface between the crystalline Zr47Cu31Al13Ni9 and Y2O3. The thermal conductivity of the crystalline Y2O3 layer is found to be k=5.0 W m(-1) K-1, and the conductances of Al/Y2O3 and Y2O3/Si interfaces are 68 and 45 MW m(-2) K-1, respectively.

Keywords

Aluminium, Aluminium alloys, Copper alloys, Metal-insulator boundaries, Metallic glasses, Nickel alloys, Silicon, Thermal conductivity, Yttrium, Compounds, Zirconium alloys, Bulk metallic glasses, Degrees k, Diffusivity, Science, Phase

Citation

Shukla, Nitin C.; Liao, Hao-Hsiang; Abiade, Jeremiah T.; et al., "Thermal conductivity and interface thermal conductance of amorphous and crystalline Zr47Cu31Al13Ni9 alloys with a Y2O3 coating," Appl. Phys. Lett. 94, 081912 (2009); http://dx.doi.org/10.1063/1.3090487

Persistent link

http://hdl.handle.net/10919/47416

Collections

Scholarly Works, Mechanical Engineering
Scholarly Works, Materials Science and Engineering (MSE)

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