Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Andrei A. Mazilkin"'
Autor:
Boris B. Straumal, Svetlana G. Protasova, Andrei A. Mazilkin, Eberhard Goering, Gisela Schütz, Petr B. Straumal, Brigitte Baretzky
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 7, Iss 1, Pp 1936-1947 (2016)
The possibility to attain ferromagnetic properties in transparent semiconductor oxides such as ZnO is very promising for future spintronic applications. We demonstrate in this review that ferromagnetism is not an intrinsic property of the ZnO crystal
Externí odkaz:
https://doaj.org/article/437358d4cd2b42adbd207d7724be744c
Autor:
Boris B. Straumal, Svetlana G. Protasova, Andrei A. Mazilkin, Thomas Tietze, Eberhard Goering, Gisela Schütz, Petr B. Straumal, Brigitte Baretzky
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 4, Iss 1, Pp 361-369 (2013)
The influence of the grain boundary (GB) specific area sGB on the appearance of ferromagnetism in Fe-doped ZnO has been analysed. A review of numerous research contributions from the literature on the origin of the ferromagnetic behaviour of Fe-doped
Externí odkaz:
https://doaj.org/article/c2824c1f35b04d4983c90228c4018b86
Autor:
Boris B. Straumal, Dagmar Goll, Brigitte Baretzky, A. S. Bakai, Svetlana G. Protasova, Sergey V. Dobatkin, Andrei A. Mazilkin
Publikováno v:
Metallic Materials. 49:17-22
It has been demonstrated for the first time that severe plastic deformation (SPD) permits to produce the metallic alloys containing two coexisting amorphous phases from the crystalline multiphase alloy. The as-cast Ni60Nb18Y22 alloy was coarse-graine
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 71:357-365
WC-Co hardmetals for mining, construction and wear applications are subjected to intensive abrasive wear, high impact loads, elevated temperatures, and severe thermal and mechanical fatigue. Novel hardmetal grades for such applications were developed
Autor:
Andrei A. Mazilkin, Bernd Heinrich Ries, Daesung Park, I. Konyashin, Thomas E. Weirich, Evgeny A. Levashov, H. Hinners, Mikhail Petrzhik, Joachim Mayer
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 67:98-104
Ordinary hard-facings obtained by plasma spraying or thermal spraying are characterized by a combination of hardness, wear-resistance and fracture toughness inferior to that of conventional WC-Co hardmetals. Therefore, in the majority of applications
Autor:
Hans-Joachim Kleebe, S.N. Konischev, M. Sorokin, S. Hlawatschek, Bernd Heinrich Ries, Andrei A. Mazilkin, D. A. Sidorenko, A. A. Zaitsev, Stefan Lauterbach, I. Konyashin, Evgeny A. Levashov
Publikováno v:
Materials Letters. 186:142-145
Novel functionally graded hardmetals comprise a low-Co hard surface layer and a tough core region containing lots of Co. They are fabricated by self-assembly during liquid-phase sintering due to Co drifts from the surface layer having a high carbon c
Publikováno v:
Current Opinion in Solid State and Materials Science. 20:247-256
The important class of grain boundary (GB) complexions includes the few nanometer thick layers having composition which strongly differs from that of the abutting grains. Such GB complexions are frequently called intergranular films (IGFs) and can be
Autor:
Viktor Fedorov, Torsten Scherer, Horst Hahn, Andrei A. Mazilkin, Roman Kulagin, Yu. Ivanisenko, Brigitte Baretzky
Publikováno v:
Materials Science and Engineering: A. 664:247-256
A new method named High Pressure Torsion Extrusion (HPTE) is proposed based on a modification of the conventional high pressure torsion technique of severe plastic deformation. During HPTE, a specimen is extruded through sectional containers rotating
Autor:
N. S. Afonikova, Andrei A. Mazilkin, Boris B. Straumal, A. B. Straumal, K. I. Kolesnikova, O. A. Kogtenkova
Publikováno v:
Physics of the Solid State. 58:742-746
The transition from incomplete to complete grain boundary wetting in copper alloys with 2.2 and 4.9 wt % Co has been studied. These alloys with peritectic phase diagrams differ from previously studied systems with eutectic transformation by the fact
Autor:
Boris B. Straumal, Brigitte Baretzky, Alexander B. Straumal, Andrei A. Mazilkin, Svetlana G. Protasova, Gisela Schütz
Publikováno v:
Journal of Materials Engineering and Performance. 25:3303-3309
The NdFeB-based alloys were invented in 1980s and remain the best-known hard magnetic alloys. In order to reach the optimum magnetic properties, the grains of hard magnetic Nd2Fe14B phase have to be isolated from one another by the (possibly thin) la