naa a22 4500 510815480 CHVBK 20180411083505.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S0031918X13020130 doi (NATIONALLICENCE)springer-10.1134/S0031918X13020130 Structure and phase composition of Nb-C deposited films [Elektronische Daten] [V. Volodin, Yu. Teleushev, E. Zhakanbaev] Using the methods of ion-plasma sputtering and the coprecipitation of ultradispersed Nb and C particles, samples of Nb-C coatings have been obtained in the range of carbon concentrations of 1.9-56.6 at %. The structural analysis supports the existence of metastable solid solutions below 1.9 at % C, the direct synthesis of Nb2C in the range of 1.9-8.5 at % C, the presence of an amorphous phase between 8.5 and 41.7 at % C, and the direct synthesis of NbC in the range of 41.7-56.6 at % C. Thermal treatment below 900°C leads to a considerable widening of concentration intervals of Nb2C and NbC existence and the intervals of coexistence of these phases with other phases. The field of NbC carbide extends from 41.7 to 56.6 at %. At a concentration above 50 at % C, the carbon phase in the coating is not revealed, which is probably caused by difficulties detecting it via X-ray diffraction method. Upon cryogenic tests, a change in the polarity of conductivity from metallic to semiconductor type upon an increase in the carbon concentration has been demonstrated. The possibility of applying the technique of material formation using small particles for other systems has been mentioned. Pleiades Publishing, Ltd., 2013 niobium nationallicence carbon nationallicence solid solution nationallicence carbides nationallicence phase nationallicence phase transition nationallicence lattice parameters nationallicence Volodin V. Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut Teleushev Yu Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut Zhakanbaev E. Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut The Physics of Metals and Metallography SP MAIK Nauka/Interperiodica 114/5(2013-05-01), 395-399 0031-918X 114:5<395 2013 114 11508 https://doi.org/10.1134/S0031918X13020130 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0031918X13020130 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Volodin V. Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut NATIONALLICENCE 700 1- Teleushev Yu Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut NATIONALLICENCE 700 1- Zhakanbaev E. Institute of Nuclear Physics, National Nuclear Center, ul. Ibragimova 1, 05032, Almaty, Republic of Kazakhstan aut NATIONALLICENCE 773 0- The Physics of Metals and Metallography SP MAIK Nauka/Interperiodica 114/5(2013-05-01), 395-399 0031-918X 114:5<395 2013 114 11508 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer