Investigation on microstructure and thermal properties of in-situ synthesized Cu–ZrO2 nanocomposites
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Marwa Elmahdy
, Gamal Abouelmagd und Asaad A. Mazen
Abstract
Cu–ZrO2 nanocomposites were prepared by an in-situ reactive synthesis of copper nitrate Cu(NO3)2 and zirconium oxychloride ZrOCl2. Zirconia (ZrO2) was added by 2.5, 5 and 10 wt.% to the Cu matrix to assess its effect on thermal conductivity and thermal expansion behavior. The results showed that ZrO2 nanoparticles (30–50 nm) were homogeneously distributed in the copper matrix. The measured thermal conductivity for the Cu–ZrO2 nanocomposites decreased from 372.8 to 94.4 W m−1 K−1 with increasing ZrO2 content from 0 to 10 wt.%. Cu-10 wt.% ZrO2 nanocomposite yields a low thermal conductivity of 94.4 W · m−1 K−1 along with a low coefficient of thermal expansion, 11.47 × 10−6 K−1.
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© 2017, Carl Hanser Verlag, München
Artikel in diesem Heft
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- DGM News
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Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- First principles, thermal stability and thermodynamic assessment of the binary Ni–W system
- Experimental evaluation of forming limit diagram and mechanical properties of nano/ultra-fine grained aluminum strips fabricated by accumulative roll bonding
- FSW of bimodal reinforced Al-based composites produced via spark plasma sintering
- Modelling analysis and experiments of polycrystalline silicon directional solidification in an annular heating field
- Effect of flow, heat transfer and magnetic energy on the grain refinement of 7A04 alloy under electromagnetic pulse
- A study on effects of a new two-step strain induced melt activation process on characteristics of Al 7075 alloy
- Synthesis and characterization of mechanically alloyed cerium oxide reinforced Al-4.5Mg alloy composite
- Densification rate and interfacial adhesion of bilayer cemented tungsten carbide and steel
- Short Communications
- Cavitation erosion of 17-4 PH stainless steels following sub-zero treatment
- Investigation on microstructure and thermal properties of in-situ synthesized Cu–ZrO2 nanocomposites
- DGM News
- DGM News