Solid state interactions in nano-sized oxides / Neiman A,Tsipis E,Beketov I,Kotov Y,Murzakaiev A,Samatov O // SOLID STATE IONICS. - 2006. - V. 177, l. 3-4. - P. 403-410.

ISSN/EISSN:

0167-2738 / нет данных

Type:

Article

Abstract:

Comparative study of reactivity of nano- and micro-sized alumina and nickel oxide, obtained by the electrical explosion of metal wires in oxidizing atmosphere, was carried out for the reactions NiO + MoO3, NiO + Al2O3, and Al2O3 + Bi2O3 by coupled anneals of ceramics, measurements of the conductivity of individual oxides and raw oxide mixtures, X-ray diffraction and differential thermal analysis. The total conductivity of nanostructured oxides was found lower than that of micro-structured ceramics. Mixing bismuth oxide with nano-structured alumina leads to stabilization of the low temperature polymorph alpha-Bi(2)A(3) up to 780 degrees C. The diffusion permeability of NiMoO4 layer grown at the surface of NiO ceramics, having submicron grains, was found 2 times lower if compared to NiMoO4 grown at micro-sized NiO ceramics. NiO and Al2O3 nano-powders preserve the high reactivity even when heated up to 1000 degrees C. The results are discussed in terms of size effects on the solid state reactivity of oxides. (c) 2005 Elsevier B.V. All rights reserved.

Author keywords:

nano-oxide reactivity; surface energy; solid state spreading and dispersion; surface chemical interaction; surface and inter-granular diffusion and conductivity; size effect REACTIVITY; CONDUCTORS; IONICS

DOI:

10.1016/j.ssi.2005.10.028

Web of Science ID:

ISI:000235540500029

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN 31
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	REACTIVITY; CONDUCTORS; IONICS
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Condensed Matter
Author-Email	arkady.neiman@usu.ru
ResearcherID-Numbers	Beketov, Igor/I-3538-2014 Tsipis, Ekaterina/A-3590-2015
ORCID-Numbers	Tsipis, Ekaterina/0000-0002-1458-484X
Number-of-Cited-References	21
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	11
Journal-ISO	Solid State Ion.
Doc-Delivery-Number	015GS