Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
nanocrystals with cubic shapeYoneda, Yasuhiro; Kunisada, Ryoichi*; Chikada, Tsukasa*; Ueno, Shintaro*; Ohara, Koji*; Wada, Satoshi*
Transactions of the Materials Research Society of Japan, 43(2), p.93 - 96, 2018/04
KNbO nanocrystals were grown by solvothermal technique assisted by a microwave treatment. We performed high-energy X-ray diffraction to extract average and local structural parameters. The particle size can be evaluated by the Scherrer's equation. The unit cell size was reduced as the particle size increased. The local structure was found to be a rhombohedral structure, which was similar to that of the bulk KNbO.
Tsuru, Tomohito; Somekawa, Hidetoshi*
no journal, ,
Mg alloys are promising candidates for next generation of structural lightweight materials in practical use, especially for transportation equipment in terms of energy and environmental conservation. Based on the assumption of brittle fracture of Mg alloys, the interfacial separation caused by segregated solutes in Mg can be described efficiently by the energy-based criterion of fracture, which is good agreement with the fracture toughness of experimental test for Mg-M binary alloys. The electronic interaction, that is the change in electronic states between interface and surface, dominantly influences the ideal work of separation regardless of the type of interface. We found that d1 and d2 solutes such as Zr have a distinctive hybridization between p-band of Mg and d-band of solutes, which characterizes a strong fracture toughness of Zr-doped Mg alloys in both calculations and experiments.
