Open AccessFractionation of solid component of welding aerosol
Author(s) -
А. А. Еннан,
V. I. Vіshnyakov,
S.A. Kiro,
M.V. Oprya
Publication year - 2021
Publication title -
fizika aèrodispersnyh sistem
Language(s) - English
Resource type - Journals
ISSN - 0367-1631
DOI - 10.18524/0367-1631.2021.59.227311
Subject(s) - aerosol , materials science , manganese , fractionation , particle (ecology) , silicon , spinel , welding , analytical chemistry (journal) , nanoparticle , amorphous solid , crystallite , metallurgy , chemistry , nanotechnology , chromatography , crystallography , oceanography , organic chemistry , geology
The design of portable filtration device with electrostatic filter and description of its work, which provides the trapping efficiency about 99.5% and fractionation of the polydisperse aerosol to four fractions via particles’ electrical mobility, are presented. The samples of aerosol particles’ fractions are obtained under usual welding regimes by welding wire Св08Г2С in CO2 and their specific surface area, element and phase compositions, phase ratio and crystallite sizes are determined. The correlation between fraction’s element composition and its specific surface area is demonstrated – the iron content is decreased, and manganese and silicon contents are increased when specific surface area is increased. The polyphase content (Fe3O4, FeO, FeMn2O4 и a-Fe are determined) and presence of the monocrystal nanosized magnetite particles, wustite and iron-manganese spinel in the fraction samples are confirmed by the X-ray analysis. The silicon compounds in particles are in amorphous state. The possibility of utilization of the nanostructured aerosol particles are proposed as a result of experimental data analysis.