Thermal conductivity and interface thermal conductance of amorphous and crystalline Zr47Cu31Al13Ni9 alloys with a Y2O3 coating
bulk metallic glasses
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AbstractWe 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.
United States National Science Foundation (U.S. NSF) Grant No. CBET-0547122
Thomas F. and Kate Miller Jeffress Memorial Trust Grant No. J-799
The Combined Research-Curriculum Development (CRCD) Program Grant Nos. EEC-9527527, EEC-0203415
The Integrative Graduate Education and Research Training (IGERT) Program Grant No. DGE-9987548
The International Materials Institutes (IMI) Program Grant No. DMR-0231320
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
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