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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 569 (Jan. 2008), p. 197-200 
    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: Copper is a well-known alloying element which is used to improve the resistance togeneral corrosion of stainless steels. Our previous experiments show that the increase of coppercontent can acquire the excellent antibacterial properties and can also increase the tendency to coldformability of the ferritic stainless steels. However, the effect of alloying Cu on the resistance tolocalized corrosion has not been clarified sufficiently. In order to understand the effect of copper onpitting corrosion resistance of the ferritic antibacterial stainless steel, the electrochemicalexperiments were carried out and the anodic polarization curves were performed in 3.5% NaClsolution for two kinds of steels. The results reveal that the ε-Cu phase in ferrite matrix diminishespitting corrosion resistance of the antibacterial stainless steel in the chlorides medium. It is connectedwith the poor passive behavior of the ε-Cu phase inclusions
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 510-511 (Mar. 2006), p. 970-973 
    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: Based on the mechanism of high antibacterial performance of copper, an antibacterialstainless steel bearing1.5wt% copper was fabricated. Processing of vacuum arc melting, hot rolling, and a series of heat treatments were applied to prepare the specimens. The relationships among the microstructure, mechanical properties, and the regime of treatment were investigated. Furthermore, the antibacterial properties of the specimens were assessed. The results showed that fine anduniformed dispersion Cu-rich phase precipitated and accumulated along the grain boundaries of the matrix during the processing of aging, and a marked variation in tensile strength and yield strength was evaluated. In addition, antibacterial result showed that the as-received material has the ability to kill Staphylococcus and coliform bacteria in the excess of 99.99%, respectively
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 544-545 (May 2007), p. 171-174 
    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: After solid-solution and aging treatment, the copper-bearing ferritic stainless steel hasbeen investigated by TEM fitted with X-ray EDS and XPS methods. The TEM and EDS shown thatthe rod-like precipitation phase was є-Cu, and distributed dispersively throughout in the matrix. Themost important result from XPS analysis confirmed that except the topmost of passive film, copperappeared as element state and its concentration kept constant in the inner surface of the material. Itwas found that the material shown an excellent antibacterial property to staphylococcus andcoliform bacteria, after passive film elimination
    Type of Medium: Electronic Resource
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