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Quasi-Static and Dynamic Testing of Carbon Fiber Reinforced Magnesium Composites

100%

Ranachowski Z., Ranachowski P., Brodecki A., Kopeć M., Kudela Jr S., Ranachowski Z., Ranachowski P., Brodecki A., Kopeć M., Kudela Jr S.

Chemical, Magnetic and X-Ray Diffraction Studies of the Sediments from Oil Field in Argentina

85%

Kopeć M., Kąc M., Bałanda M., Budziak A., Kąc S., Perzanowski M., Góra M.

Acta Physica Polonica A

2012

vol. 121

issue 2

566-570

Chemical, magnetic, and phase composition analysis of deposits taken from sedimentation tank from oil plant in Argentina was carried out. Energy dispersive spectroscopy indicates iron as a main sediment component with the site dependent fraction ranging from 11% to 78% (weight percentage). Moreover, large fractions of sulfur (4%-33%), oxygen (8%-28%), calcium (1%-14%), and silicon (1%-11%) were found. The chemical analysis performed with wet chemical methods also indicated Fe as a main component (about 35%), additionally a large fraction ( ≈ 15%) of the sulfur and under 10% fractions of calcium ( ≈ 7%), carbon ( ≈ 6%), and silicon ( ≈ 5%) were found in the sample. The phase composition studies performed using X-ray diffraction showed magnetite - Fe_3O_4, goethite - α-FeOOH, lepidocrocite - γ-FeOOH, siderite - FeCO_3, and iron-sulfur compounds (mackinawite - FeS, stoichiometric FeS, greigite - Fe_3S_4) and other compounds like aragonite - CaCO_3, calcite - CaCO_3, anorthite - CaAl_2Si_2O_8, quartz - SiO_2 and barium sulphate Ba(SO_3)_{0.3}(SO_4)_{0.7}. Studies performed by the Mössbauer spectroscopy, confirmed presence of majority of compounds identified by X-ray diffraction. Magnetic AC susceptibility measurements show that magnetite is a main component of the studied deposit. High concentration of the magnetic compounds deposited in the sedimentation tank points to the advisability to install the magnetic device designed to support water treatment processes, i.e.: flocculation, coagulation, sedimentation, and filtration. This device could simultaneously inhibit microbiological and chemical corrosion.

Investigation of Sediments Causing Damage to Water Meters in a Large Drinking Water Distribution System

58%

Kopeć M., Roman M., Kąc M., Budziak A., Paluszkiewicz C., Zarzycki A., Kąc S., Dutkiewicz E., Cichoń T., Bochnia T., Kwiatek W.

Acta Physica Polonica A

2018

vol. 133

issue 2

296-301

Preliminary studies on the sediments collected from water meters of Krakow water supply system were performed in the cooperation with the Municipal Water Supply and Sewage. Creation and deposition of sediments on the measuring devices installed in the water supply system is a serious technological and economical problem for water companies, defectively operating for this reason water meters must be replaced. It is evident that knowledge of the chemical and phase composition of sediments is an important step towards resolving the problem of impurities in water supply systems. Four different samples of sediments, coming from water meters, were investigated using the proton-induced X-ray emission, the X-ray diffraction, the Fourier transform infrared and Raman spectroscopy. The X-ray methods revealed presence of amorphous and fine-crystalline phases as well as high content of iron-based compounds. As a crystalline phase, the most frequently appeared: goethite, lepidocrocite, iron oxides (hematite, maghemite, magnetite), calcium carbonate, and quartz. In one of the samples, the nanocrystalline phase was found and identified as hydrous iron oxyhydroxide ferrihydrite. Vibrational spectroscopy methods confirmed the composition of crystalline phases as well as enabled to estimate the abundance of amorphous phase in samples.

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2 Acta Physica Polonica A

1 Archives of Metallurgy and Materials

1 2020

1 2018

1 2012

3 Kopeć M.

2 Budziak A.

2 Kąc M.

2 Kąc S.

1 Bałanda M.

1 Bochnia T.

1 Brodecki A.

1 Cichoń T.

1 Dutkiewicz E.

1 Góra M.

1 Kudela Jr S.

1 Kwiatek W.

1 Paluszkiewicz C.

1 Perzanowski M.

1 Ranachowski P.

1 Ranachowski Z.

1 Roman M.

1 Zarzycki A.

Search results

Quasi-Static and Dynamic Testing of Carbon Fiber Reinforced Magnesium Composites

Chemical, Magnetic and X-Ray Diffraction Studies of the Sediments from Oil Field in Argentina

Investigation of Sediments Causing Damage to Water Meters in a Large Drinking Water Distribution System