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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 3561-3566 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Oxidation of metals 24 (1985), S. 331-350 
    ISSN: 1573-4889
    Keywords: oxidation ; initial stages ; reactive element addition ; oxide grain growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Structural Fe-Cr-Ni alloys rely upon a thermally formed, protective, surface oxide scale to prevent rapid corrosive degradation. The protective capacity of the surface scale may be strongly influenced by the alloy composition, with minor additions of reactive elements playing an important role in the initial stages of scale formation. The influence of an addition of Zr on initial scale growth on an Fe-Cr-Ni alloy has been investigated in situ utilizing an environmental cell incorporated into a high-voltage electron microscope. Oxidation experiments were conducted on a pure ternary Fe-Cr-Ni alloy and one containing 6 wt.% Zr for durations up to 1800 s. At 500°C in a low oxygen-partialpressure environment, a continuous surface oxide layer formed more quickly on the Zr-free alloy than on the Zr-modified alloy. Also, on the Zr-modified alloy, the scale was richer in Cr, and the rate of increase in oxide grain size was also greater.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Oxidation of metals 31 (1989), S. 305-323 
    ISSN: 1573-4889
    Keywords: oxidation ; sulfidation ; Fe-Cr-Ni alloys ; Nb addition ; Zn addition ; breakaway corrosion ; mixed-gas atmospheres
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Structural Fe-Cr-Ni alloys may be rapidly degraded in oxygen-sulfur mixed-gas environments at elevated temperatures unless protective oxide scales can be formed and maintained. The breakaway corrosion process was examined in model alloys of Fe-25wt.% Cr-20wt.% Ni with and without Nb and Zr additions. Oxide scales were preformed in S-free environments and subsequently exposed to oxygen-sulfur mixed-gas atmospheres. Preformed scales were found to delay the onset of breakaway corrosion. The beneficial effects of refractory metal additions were achieved via formation of a barrier layer at the Cr2O3 alloy interface.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 400-404 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Results for the determination of aluminium in several biological materials by atomic absorption and atomic emission spectrometry using the solid sampling technique in connection with a constant temperature furnace are given. A comparison was made with a dissolution procedure and good agreement was generally obtained. With the solid sampling technique it was possible to calibrate against aqueous standards and to achieve a precision of better than 10% r.s.d. for NBS 1577a Bovine Liver and IAEA H-4 Animal Muscle, providing that the sample mass was greater than 1.3 mg and that the peak area was evaluated. Laboratory air and the solid sampling procedure were identified as possible sources of contamination.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 324-329 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The possibility of determining a range of analytes in solid samples using a single set of optimised ‘multi-element’ instrumental parameters for a graphite furnace atomic emission spectrometry (GFAES) system was investigated. Accurate results for silver, manganese, nickel, lead and vanadium in solid reference materials of biological origin were obtained using peak area evaluation and calibration against standard solution curves. The versatility of the constant-temperature atomiser enabled lead and silver in metallurgical samples to be determined as well, although quantification against standard steel materials was necessary in the case of silver to obtain acceptable results.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 324-329 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The possibility of determining a range of analytes in solid samples using a single set of optimised ‘multi-element’ instrumental parameters for a graphite furnace atomic emission spectrometry (GFAES) system was investigated. Accurate results for silver, manganese, nickel, lead and vanadium in solid reference materials of biological origin were obtained using peak area evaluation and calibration against standard solution curves. The versatility of the constant-temperature atomiser enabled lead and silver in metallurgical samples to be determined as well, although quantification against standard steel materials was necessary in the case of silver to obtain acceptable results.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 400-404 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Results for the determination of aluminium in several biological materials by atomic absorption and atomic emission spectrometry using the solid sampling technique in connection with a constant temperature furnace are given. A comparison was made with a dissolution procedure and good agreement was generally obtained. With the solid sampling technique it was possible to calibrate against aqueous standards and to achieve a precision of better than 10% r.s.d. for NBS 1577a Bovine Liver and IAEA H-4 Animal Muscle, providing that the sample mass was greater than 1.3 mg and that the peak area was evaluated. Laboratory air and the solid sampling procedure were identified as possible sources of contamination.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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