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  • 1
    Electronic Resource
    Electronic Resource
    Structural properties of lead vanadate glasses containing La3+ or Fe3+ ions (1994)
    Springer
    Journal of materials science 29 (1994), S. 1227-1232 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Structural properties of lead vanadate glasses containing La3+ or Fe3+ ions were investigated using X-ray diffraction, Fourier transform infrared spectroscopy and laser Raman spectroscopy. Crystalline Pb2V2O7 was formed for the molar composition 66.7PbO-33.3V2O5. Incorporation of greater quantities of La3+ into lead metavanadate glass caused the crystallization of Pb2V2O7. Fourier transform infrared and laser Raman spectra also suggested the presence of LaVO4. Incorporation of Fe3+ ions into lead metavanadate glass, up to 20 wt% Fe2O3, did not cause crystallization inside the glass matrix. Changes in the vibrational spectra are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00975069
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  • 2
    Electronic Resource
    Electronic Resource
    X-ray diffraction and Fourier transform-infrared analysis of the rust formed by corrosion of steel in aqueous solutions (1993)
    Springer
    Journal of materials science 28 (1993), S. 5744-5752 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Chemical and structural properties of the rust formed by corrosion of steel in aqueous solutions were studied by X-ray diffraction and Fourier transform infrared (FT-IR) spectroscopy. The corrosion products of steel were generated in aqueous solutions of different electrolyte compositions at room temperature (20 °C) or in an autoclave at 120 °C. X-ray diffraction analysis showed the presence of different oxide phases in the rust, such as lepidocrocite, magnetite, ferrihydrite, goethite and haematite. In all samples, the presence of an amorphous fraction was detected. Ferrihydrite was detected only in the rust samples formed at 120 °C, The characteristic properties of the FT-IR spectrum of the ferrihydrite component in the rust were investigated. Phase compositions of the corrosion products depended on the formation temperature and the electrolyte composition of the aqueous solutions. The influence of chloride, nitrate or sulphate anions on the phase composition of the rust is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00365176
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  • 3
    Electronic Resource
    Electronic Resource
    Mössbauer spectroscopy and X-ray diffraction of oxide precipitates formed from FeSO4 solution (1990)
    Springer
    Journal of materials science 25 (1990), S. 3186-3190 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Chemical and structural properties of oxide precipitates formed from FeSO4 solution were investigated using X-ray diffraction and57Fe Mössbauer spectroscopy. The hydrolysis of urea at elevated temperature was used for the generation of OH− ions during the precipitation process. The formation of particular oxide phase in the precipitate is strongly dependent on the concentrations of FeSO4 and urea, as well as on the rate of oxygenation. The phase analysis of precipitates showed the presence of different oxide phases, such as goethite, lepidocrocite, hematite and magnetite, and in one sample of a small amount of siderite. Only substoichiometric magnetite, Fe3−x O4, was detected. Significant differences in the Mössbauer spectrum of goethite were observed, due to a very small particle size, the degree of crystallinity and/or different content of structurally bonded water. The correlation between the Mössbauer spectra of precipitated goethite and goethite formed during the atmospheric corrosion of steel is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587672
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  • 4
    Electronic Resource
    Electronic Resource
    Structural properties of precipitates formed by hydrolysis of Fe3+ ions in aqueous solutions containing NO 3 − and Cl− ions (1994)
    Springer
    Journal of materials science 29 (1994), S. 2474-2480 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The structural properties of precipitates formed by hydrolysis of Fe3+ ions in aqueous solutions, containing N0 3 − and Cl− ions, were investigated. The reactions of hydrolysis were performed in glass autoclaves at 120 °C. X-ray diffraction showed that α-FeOOH and α-Fe2O3 were present in hydrolytical products formed in solutions containing N0 3 − ions, while β-FeOOH and α-Fe2O3 were typical hydrolytical products in solutions containing Cl− ions. In the mixed Fe(N03)3+FeCl3 solutions, the phase composition of the hydrolytical products was determined by the concentration of the dominant Fe(III)-salt. Fourier transform infrared spectroscopy and Mössbauer spectroscopy were also used for the structural characterizations of the hydrolytical products. Transmission electron microscopy showed a diversity of shapes of the particles, which depended strongly on the experimental conditions. All types of particle, observed by transmission electron microscopy, were interpreted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00363442
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  • 5
    Electronic Resource
    Electronic Resource
    Corrosion of stainless steel in contact with a melt of phosphate glasses (1989)
    Springer
    Journal of materials science 8 (1989), S. 1389-1390 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00720196
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of iron ions on the structural properties of some inorganic glasses (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 116 (1987), S. 141-157 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The effects of iron on the structural properties of Zn-borosilicate glass and Pb-metaphosphate glass were studied using X-ray diffraction,57Fe Mössbauer spectroscopy and IR spectroscopy. Zn-borosilicate glass was prepared with varying amounts of Fe2O3 (up to 30% wt.). It was found that the chemical form of added iron (α-FeOOH, α-Fe2O3 or Fe3O4) affects the Fe3+/Fe2+ ratio, as well as the distribution of iron ions at different coordination sites. At high concentration of iron the crystallization of zinc ferrite in the glass matrix takes place. X-ray diffraction and57Fe Mössbauer spectroscopy showed that the amount of zinc ferrite in Zn-borosilicate glass decreases with the following order of addition: α-FeOOH→α-Fe2O3→Fe3O4. In Pb-metaphosphate glass doped with high concentration of α-Fe2O3, the crystallization of Fe3(PO4)2 is pronounced. The assignments of IR band positions and the corresponding interpretation are given. The importance of this study for the technology of vitrification of high-level radioactive wastes is emphasized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037218
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of iron ions on the structural properties of Zn-borosilicate glasses (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 130 (1989), S. 299-310 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The effects of iron on the structural properties of Zn-borosilicate glasses have been studied using X-ray diffraction, IR spectroscopy and57Fe Mössbauer spectroscopy. Zn-borosilicate glasses were doped with α−Fe2O3. In the systems Na2O−ZnO−B2O3−SiO2−Fe2O3 the presence of only one crystalline phase, ZnFe2O4, was detected. X-ray diffraction showed that crystallization is more pronounced in the systems ZnO−B2O3−SiO2−Fe2O3. In these systems the presence of different crystalline phases, such as ZnO, γ−Fe2O3, Fe3O4, ZnFe2O4 and Fe3BO5, was detected. The crystallization of α−Zn2SiO4 in the system ZnO−B2O3−SiO2 was confirmed by X-ray diffraction and IR spectroscopy. The valence state and coordination of iron in Zn-borosilicate glasses were determined by57Fe Mössbauer spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041350
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  • 8
    Electronic Resource
    Electronic Resource
    Corrosion of simulated nuclear waste glass (1988)
    Springer
    Journal of radioanalytical and nuclear chemistry 122 (1988), S. 91-102 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Glasses are suitable host matrices for the immobilization of high-level radioactive wastes. The corrosion behaviour of nuclear waste glass in water is of considerable importance, since a potential route for returning of radionuclides to the biosphere is their leaching from the waste form into groundwater and subsequent transport by the groundwater to the surface. In this study, the preparation and characterization of borosilicate glasses of different chemical composition were investigated. Borosilicate glasses were doped with simulated nuclear waste oxides. The chemical corrosion in water of these glasses was followed by measuring the leach rates (g·cm−2·day−1), as a function of time. It was found that a simulated nuclear waste glass with the chemical composition (weight %), 15.61% Na2O, 10.39% B2O3, 45.31% SiO2, 13.42% ZnO, 6.61% TiO2 and 8.66% waste oxides, is characterized by low melting temperature and with good corrosion resistance in water. Influence of passive layers on the leaching behaviour of nuclear waste glasses is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037168
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  • 9
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    Influence of iron ions on the structural properties of Zn-borosilicate glasses (1989)
    Springer
    Details
    Publication Date: 1989-04-01
    Print ISSN: 0236-5731
    Electronic ISSN: 1588-2780
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 10
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    Structural properties of lead vanadate glasses containing La3+ or Fe3+ ions (1994)
    Springer
    Details
    Publication Date: 1994-03-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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