Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1134/S0036029518080141
Ключевые слова: mechanochemical synthesis, intermetallic compounds, gallium, iridium, complex compounds of iridium, Concrete additives, Concrete mixtures, Energy utilization, Industrial research, Industrial wastes, Mechanical properties, Minerals, Scanning electron microscopy, X ray spectrometers, Chemical compositions, Hydration reaction, Local raw materials, Mechanic
Аннотация: The interaction between a solid inert metal (Ir) and an active liquid metal (Ga) during mechanical activation in a high-energy planetary mill is studied by X-ray diffraction and scanning electron microscopy with EDS-apparatus for high-resolution energy dispersive X-ray microanalysis. The influence of mechanical activation conditionПоказать полностьюs on the formation of GaxIry intermetallic compounds and GaxIry/Ir composites and on their solubility in various acids is investigated. Being a surfactant for iridium, gallium propagates along the grain boundaries of polycrystalline iridium particles during mechanical activaiton and, hence, sharply decreases their strength. As a result of strong mechanical deformation during activation, the contact surface area between the solid and liquid metals, where the intermetallic compounds form intensely, increases sharply. As a result of treatment of the products of mechanical activaiton by a mixture of concentrated hydrochloric and nitric acids, iridium (>30%) from passes into an acid solution and forms HxIrCly complex compounds, which can interact with bases to form soluble complex salts. The subject matter of the research: fine-dispersed mineral ad-ditives based on raw materials and industrial wastes for the production of self-compacting concrete with prescribed high physical and mechanical characteristics, the use of which will be econom
Журнал: RUSSIAN METALLURGY
Выпуск журнала: Is. 8
Номера страниц: 728-732
ISSN журнала: 00360295
Место издания: MOSCOW
Издатель: PLEIADES PUBLISHING INC