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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 19 (1968), S. 298-301 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: A diagnosis of the corrosion resistance of CrNi and CrNiMo steels in citric acidThe electrochemical behaviour yields criteria concerning the corrosion reside stance in citric mid (5, 25, 50 und 90%). In pure acid there is no active dissolution, while in the presence of sulfates or chlorides active and transpassive regions are found. The stability of the polarization current, observed in the vicinity of its zero value, yields criteria concerning the stability of the passive state in a given range. The corrosion losses measured in citric acid (24%/100°C or 90%/60°C), with sulfate (0.3 and 1.2%) and chloride ions (0.014 and 0.031%) are as follows (mmly): Cr18Ni9 1.7; Cr18Ni9Mo2 0.3; Cr18Ni10Mo2Ti 0.03; Cr21Ni38 Mo5Ti 0.009.
    Notes: Das elektrochemische Verhalten liefert Kriterien für die Korrosionsbeständigkeit in Citronensäure (5,25, 50 und 90%). In der reinen Säure findet keine aktive Auflösung statt, während bei Anwesenheit von Sulfaten oder Chloriden aktive und transpassive Bereiche auftreten. Die Stabilität des Polarisationsstromes in der Nähe seines Nullwertes ermöglicht Aussagen über die Stabilität des passiven Zustandes in einem gegebenen Bereich. Die Korrosionsverluste in Citronensäure (25%/100°C oder 90%/600°C) mit Sulfationen (0,3 und 1,2%) und Chloridionen (0,014 und 0,031%) betranen (mml Jahr): Cr18Ni9 1,7; Cr18Ni9Mo2 0,3; Cr18Ni10Mo2Ti 0.03; Cr21Ni38Mo5Ti 0,009.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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