Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.3390/magnetochemistry9070177

Ключевые слова: sintering, dispersed microspheres, fly ash, glass-ceramics, soft magnetic materials, characterization, mössbauer spectroscopy, magnetic measurements

Аннотация: The recycling of hazardous industrial waste into high-tech materials with desired properties is of considerable interest since it provides optimal alternatives for its final disposal. Coal fly ash, the major waste generated by coal-fired power plants, contains significant quantities of dispersed microspheres with a diameter smallerПоказать полностьюthan 10 μm, which are anthropogenic atmospheric pollutants PM10. Due to their composition and fine-grained powder morphology, they can be converted into sintered products. In this study, dispersed microspheres from class C fly ash were directly sintered without any additive to form high-strength glass-ceramics with magnetic properties. The optimum processing conditions were achieved at a temperature of 1200 °C, at which samples with a compressive strength of 100.6 MPa were obtained. Sintering reduces the quantity of the glass phase and promotes the formation of larnite, Fe-spinel, ye'elimite, and ternesite. Mössbauer measurements show that the relative concentration of the magnetic phase compared to the paramagnetic one rises almost in order. The sintered sample demonstrates a narrower distribution of the hyperfine magnetic field and a significantly lower value of the coercive field of 25 Oe, which allows proposing such materials as soft magnetic materials. The presented results demonstrate promising industrial applications of hazardous PM10 to minimize solid waste pollution.

Журнал: Magnetochemistry

Выпуск журнала: Т.9, №7

Номера страниц: 177

ISSN журнала: 23127481

• Fomenko Elena V. (Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”)
• Akimochkina Galina V. (Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”)
• Knyazev Yuriy V. (Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”)
• Semenov Sergey V. (Institute of Engineering Physics and Radioelectronics, Siberian Federal University)
• Yumashev Vladimir V. (Laboratory of Electron Microscopy, Siberian Federal University)
• Solovyov Leonid A. (Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”)
• Anshits Alexander G. (Department of Chemistry, Siberian Federal University)

• Ядро РИНЦ (eLIBRARY.RU)