Paper Title:
High-Pressure High-Temperature Synthesis of Nanostructural Magnesium Diboride for Electromotors and Devices Working at Liquid Hydrogen Temperatures

Addition of Ti and Zr to high-pressure (HP) synthesized MgB2 results in an increase of critical current density of the material due to the absorption of impurity hydrogen coming most likely from the materials of a high-pressure cell. The results of the studies of structure, critical current density, trapped field and mechanical characteristics are discussed. High-pressure synthesized MgB2 (with Ti additions) blocks were for the first time used in a SC electromotor at 20 K and demonstrated the efficiency similar to that of MT-YBCO bulk (at the same working temperature).

Authors: M. Henžel, Peter Zimovčák, Ján Dusza, András Juhász, Janos Lendvai
Abstract:Indentation methods have been used for the study of the hardness and deformation characteristics MoSi2. Micro-nanoindentation tests at loads...
Authors: I. Sabirov, Thomas Schöberl, Reinhard Pippan
Abstract:A coarse-grained W-25%Cu composite with a tungsten particle size between 2 and 10 μm is subjected to high pressure torsion (HPT) at room...
Authors: Yu Li Sun, Dun Wen Zuo, Duo Sheng Li, Rong Fa Chen, Min Wang
Abstract:Hardness, elastic modulus and scratch resistance of single silicon wafer are measured by nanoindentation and nanoscratching using a...
Authors: Yun Dong, Xiao Ping Lin, Run Guo Zheng, Shi Hui Jiao
Chapter 7: Materials and Energy Saving
Abstract:The solidification microstructure of Mg-6Zn-3Y alloy under super-high pressure was investigated by using X-ray diffraction (XRD) and scanning...
Authors: M.V. Magnitskaya, E.T. Kulatov, A.A. Titov, Y.A. Uspenskii, E.G. Maksimov, S.V. Popova, V.V. Brazhkin
I. Theory
Abstract:We report on ab initio density-functional calculations of a novel spintronics-related compound CrGa2Sb2 recently...