Synthesis of Ag/ZnO mixture for powdered contact materials

Описание

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1134/S1070427214040016

Аннотация: The processes of a ultrafine Ag/ZnO mixture produced by coprecipitation from salt solutions were investigated. The coprecipitation in AgNO3-ZnNO3-Na2CO3 system was analyzed in the presence of surfactants, considering the pH value and a solution composition contribution. The optimal coprecipitation conditions were Na2CO3 precipitatiПоказать полностьюng agent excess of similar to 20%, providing a pH value of similar to 10, with subsequent thermal decomposition of the mixture at about 700 K. A thermal analysis of the precursor mixtures were carried out. The phase composition, dispersity and morphology of the precipitates were determined before and after a thermal treatment. The size decrease of the precipitated particles, as well as dispersity and distribution uniformity increase of the oxide inclusions in the target composite matrix is due to the presence of surfactants in solutions.

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Издание

Журнал: RUSSIAN JOURNAL OF APPLIED CHEMISTRY

Выпуск журнала: Vol. 87, Is. 4

Номера страниц: 405-411

ISSN журнала: 10704272

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

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