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  • 1
    Electronic Resource
    Electronic Resource
    Matrix formulation of the iterative method of phase analysis (1987)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 20 (1987), S. 260-261 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: A matrix formulation is given of the numerical procedures for the iterative method of X-ray diffraction phase analysis [Fiala (1980). Anal. Chem. 52, 1300–1304; Fiala (1982). Cryst. Res. Technol. 17, 643–650].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889887086734
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  • 2
    Electronic Resource
    Electronic Resource
    Some practical aspects of the Fourier deconvolution (1983)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 16 (1983), S. 103-112 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Simple rules for the Fourier deconvolution method are illustrated on experimental X-ray diffraction profiles. Comparison of various digital filters is given and criteria for a right solution are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S002188988301002X
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  • 3
    Electronic Resource
    Electronic Resource
    Gradients of Parameters of the Real Structure in Steels Surface Layers after Mechanical Treatment (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 130 (Dec. 2007), p. 77-80 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.130.77.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Phase Composition and Microstructure Stability of Al-Ni-Zr Alloys (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 482 (Apr. 2005), p. 219-222 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The paper reports on a detailed investigation of microstructure and phase composition of rapidly solidified and annealed AlNi18.5 and AlNi17Zr1.8 ribbons. The ribbons were prepared by the melt spinning (planar flow casting) technique. The microstructure and phase composition have been studied by TEM and XRD. The specimens were annealed and subsequently subjected to microstructure investigations to asses their thermal stability. Rapidly solidified alloys are composedof a-Al and Al3Ni phase grains. No significant difference in the shape between Al and Al3Ni grains was found. The Al9Ni2 metastable phase was identified in the rapidly solidified AlNi17Zr1.8 alloy and the Al3Zr phase precipitates from the a-Al solid solution in the AlNi17Zr1.8 alloy after the high temperature annealing
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.482.219.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    The influence of some geometrical and physical factors on the diffraction patterns of polycrystals (1972)
    Springer
    Czechoslovak journal of physics 22 (1972), S. 682-696 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method of grain size determination in polycrystals from the number of spots on Debye-Scherrer rings serves here as experimental basis for the study of the influence of a) parameters of the experimental arrangement (e.g., divergence of primary beam, choice of the standard blackening and ratio of exposures), and b) properties of the specimen (e.g., preferred orientation of grains and their local distribution of sizes), on the results of measurement. Sufficiently numerous statistical sets of experimental data show that the counting of spots may be quite exact, but the usually applied relation between the number of spots and grain size is likely appreciably oversimplified. As the assumptions, from which the mentioned relation was deduced, are closely connected with problems of X-ray diffraction, the results presented in this paper may be interesting from a more general point of view. The X-ray results are also compared to the metallographic ones. The possibility of grain size determination from counting spots on one diffraction photograph even in back reflexion region is pointed out in Appendix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01947497
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  • 6
    Electronic Resource
    Electronic Resource
    The influence of the divergence of X-rays on the determination of volume of diffracting particles (1973)
    Springer
    Czechoslovak journal of physics 23 (1973), S. 542-547 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The relation was investigated of the number of diffraction spots from unit volume of a polycrystal to the mean instrumental divergenceα m of X-ray beam. Experimental evidence proves this dependence to be decreasing, in contradiction to the generally accepted theoretical basis of the method. These experimental results mean an increasing effective volume of diffracting particles with increasing instrumental divergence. Thus the application of the quantityα m itself distorts the true dependence of number of spots on instrumental divergence. We shall prove this statement and shall apply the previous experimental results to infer more detailed ideas on the mentioned dependence, while using the instrumental divergenceα instead of the mean valueα m . This detailed analysis of experimental results contributes to better understanding of the method and suggests the precautions to be taken in the interpretation of results when determining the volume of diffracting particles from spotty diffraction lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01593831
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  • 7
    Electronic Resource
    Electronic Resource
    Quantitative phase analysis of metastable structure in a laser melted Fe-C alloy (1996)
    Springer
    Journal of materials science 31 (1996), S. 995-1004 
    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 Quantitative X-ray diffraction phase analysis was utilized to investigate the structure of a Fe-3.5 wt% C alloy after laser melting. The measurements were taken on surfaces modified by a series of equidistant laser tracks with overlappings k = 0.25, 0.50 and 0.75, and the results were extrapolated to the non-interfering tracks. On the same samples, the microstructure was observed by scanning electron microscopy. The structure of the rapidly solidified surface layers consists of α-Fe (ferrite and martensite), γ-Fe (retained austenite) and cementite. The results of X-ray diffraction point to a very high amount of carbide indicating a non-stoichiometric composition of cementite. Besides, the volume fraction of α-Fe increases with increasing coefficient of overlapping k. At the same time, the volume fraction of cementite decreases while the content of γ-Fe remains nearly constant. The changes are attributed to decomposition of the metastable carbide due to tempering of the former tracks by the following laser passes. This thermal effect was quantified on the base of the heat-transfer model of moving Gaussian beam.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00352900
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  • 8
    Electronic Resource
    Electronic Resource
    Magneto-optical characteristics of Co, Ti-substituted barium hexaferrite films deposited by the dip-coating method (1997)
    Springer
    Journal of sol gel science and technology 8 (1997), S. 947-951 
    Details
    ISSN: 1573-4846
    Keywords: hexagonal ferrites ; thin films ; sol-gel ; magneto-optics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Pure and Co, Ti-substituted hexagonal barium ferrite (BaFe12O19, BaM) films were prepared by the dip-coating method from alkoxides. After repeated dipping, drying and calcining at 500°C for about 15 minutes in an oxygen atmosphere, polycrystalline films with a thickness of 1–1.8 μm on SiO2 substrates were obtained. Spectral dependencies of the Faraday rotation and the optical transmission of BaCo x Ti x Fe12−2x O19(0≤x≤0.8) films were measured in the range from 500 to 2500 nm at room temperature. The absorption coefficient did not display much structure, but specific Faraday rotation spectra of Co, Ti-ferrite films showed local maxima at 720, 1475 and 1750 nm. At those wavelengths, the magneto-optical figure of merit attains its maximum values. For comparison of the crystallization and magnetic properties, Ba(CoTi) x Fe12−2x O19 (x=0.9) powder has also been prepared by the sol-gel method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02436966
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  • 9
    Electronic Resource
    Electronic Resource
    Magneto-Optical Characteristics of Co, Ti-Substituted Barium Hexaferrite Films Deposited by the Dip-Coating Method (1997)
    Springer
    Journal of sol gel science and technology 8 (1997), S. 947-951 
    Details
    ISSN: 1573-4846
    Keywords: hexagonal ferrites ; thin films ; sol-gel ; magneto-optics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Pure and Co, Ti-substituted hexagonal barium ferrite (BaFe12O19, BaM) films were prepared by the dip-coating method from alkoxides. After repeated dipping, drying and calcining at 500°C for about 15 minutes in an oxygen atmosphere, polycrystalline films with a thickness of 1–1.8 μm on SiO2 substrates were obtained. Spectral dependencies of the Faraday rotation and the optical transmission of BaCoxTixFe12-2xO19 (0 ≤ x ≤ 0.8) films were measured in the range from 500 to 2500 nm at room temperature. The absorption coefficient did not display much structure, but specific Faraday rotation spectra of Co, Ti-ferrite films showed local maxima at 720, 1475 and 1750 nm. At those wavelengths, the magneto-optical figure of merit attains its maximum values. For comparison of the crystallization and magnetic properties, Ba(CoTi)xFe12-2xO19 (x = 0.9) powder has also been prepared by the sol-gel method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018352421519
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  • 10
    Electronic Resource
    Electronic Resource
    Quantitative phase analysis of metastable structure in a laser melted Fe-C alloy (1996)
    Springer
    Journal of materials science 31 (1996), S. 137-143 
    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 Pure Fe-3.5wt% C alloy was surface melted using a cw C02 laser and the microstructure of the laser tracks was investigated by scanning and transmission electron microscopy. Structure of the melted zones consisted of dendrites of partially transformed primary austenite and of very fine lamellar ledeburite. The secondary dendrite arm spacings were indicative of a cooling rate of ∼ 105 Ks−1, in good accord with calculations based on the model of a moving Gaussian beam. Using methods of quantitative metallography the volume fraction of dendrites within the melted zone and the volume fractions of the carbide and ferrite phases in the decomposed ledeburite were estimated. These data were combined with the results of a quantitative X-ray diffraction phase analysis (see Part II) and compared with the equilibrium phase diagram. It was found that the volume fraction of dendrites was near the equilibrium value while the volume content of cementite in the rapidly solidified structures was considerably higher than predicted from the equilibrium phase diagram.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355137
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