|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Consolidation of Copper/Copper Oxide Nanoparticles by Spark Plasma Sintering
||Takahiro Kunimine, Hisashi Sato, Motoko Yamada, Yoshimi Watanabe, Nobuhiro Tsuji
|On-Site Speaker (Planned)
This study aims to investigate consolidation of copper/copper oxide nanoparticles by spark plasma sintering (SPS) and their microstructure and mechanical properties. The copper/copper oxide nanoparticles having particle sizes smaller than 100 nm have been sintered by SPS in a vacuum at 573 K - 973 K under uniaxial pressure of 30 MPa for 600 s. The composition of the samples have been identified by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Microstructural observation has been carried out by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Mechanical properties of samples have been investigated by Vickers microhardness test. The results demonstrated that the Vickers microhardness increased with increasing sintering temperature and reached the maximum value of 140 at sintering temperature of 873 K. Above 873 K of sintering temperature, the hardness decreased due to grain coarsening.