Study through Potentiodynamic Techniques of the Corrosion Resistance of Different Aluminium base MMC's with Boron Additions Articles uri icon

publication date

  • June 2010

start page

  • 203

end page

  • 208

volume

  • 660-661

international standard serial number (ISSN)

  • 0255-5476

electronic international standard serial number (EISSN)

  • 1662-9752

abstract

  • This paper compares wrought aluminium with PM aluminum and PM aluminium alloys with boron-base additions, containing boron carbide and Fe/B (obtained by mechanical alloying during 36 hours from a Fe-B 50% mixture
    by weight). The effect of sintering temperature for the Fe/B containing
    material and the effect of mechanical alloying for the boron carbide
    containing aluminium alloy on the corrosion resistance of those
    materials have been studied. Their behavior is followed through cyclic
    anodic polarization curves in chloride media. In the Al+20%Fe/B
    composite, low sintering temperatures (650-950ºC) exert a negative
    effect. However, when the material was sintered at high temperature
    (1000-1100ºC) its behaviour was very similar to the PM pure aluminium.
    The effect of mechanical alloying studied in aluminium with boron
    carbide was also important in corrosion resistance, finding a lower
    corrosion rate in the mechanically alloyed material.