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  • 1990-1994  (2)
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  • 1990-1994  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Inhibiting and accelerating effects of aminophenols on the corrosion and permeation of hydrogen through mild steel in acidic solutions (1994)
    Springer
    Journal of applied electrochemistry 24 (1994), S. 355-360 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The influence of aminophenols on the corrosion and hydrogen permeation of mild steel in 1 M HCl and 0.5 M H2SO4 has been studied using weight loss and gasometric measurements and various electrochemical techniques. All the isomers of aminophenol inhibit the corrosion of mild steel in 1 M HC1 and accelerate it in 0.5 M H2SO4. They behave predominantly as cathodic inhibitors. Aminophenols, except PAP in I M HCI, enhance the permeation current in both the acids. The adsorption of PAP on the mild steel surface in 1 M HCl obeys the Langmuir adsorption isotherm. Surface analysis and ultraviolet spectral studies are also carried out to establish the mechanism of corrosion inhibition and acceleration of mild steel in acidic solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00242066
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electrochemical passivation of copper-aluminium-silver alloy in sodium hydroxide solution (1993)
    Springer
    Journal of applied electrochemistry 23 (1993), S. 1280-1284 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The effect of consecutive cyclic polarization of a new heat treated and mechanically polished Cu-Al-Ag alloy of entirely new composition with a high aluminium content on the surface microstructure has been studied using scanning electron microscopy and X-ray diffractometry. The electrochemical behaviour of this alloy in 0.5 m NaOH has been studied using cyclic voltammetry and impedance measurements. Repetitive triangular sweeps (RTPS) potential scans between hydrogen and oxygen evolution in alkaline media lead to preferential dissolution of the aluminium. The steady state I-E profile of the alloy after the RTPS pretreatment indicates surface dealloying of aluminium due to its preferential dissolution, and shows a characteristic similar to that for high purity copper and silver.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00234813
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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