In Reply to: Re: Corrosion resistance and conductivity of Sc-Al alloys posted by RICHARD CORCUERA on 08/06/02 at 2:57 AM:
Dear Richard,
To the best of my knowledge, there is a linear relationship between electrical conductivity and thermal conductivity in aluminium alloys. To be honest I don't know if the relationship is so rigid that it can't be played around with, but I don't believe that you'll be able to decrease the electrical conductivity to any appreciable amount while retaining the thermal conductivity.
Sc does miracles with aluminium alloys, but not this particular miracle.
Anyway, aluminium wheels (why are they called magwheels if they are made of aluminium?) are normally made of Al-Si based casting alloys with Si contents of typically 6-12 %. Si and Sc does not match very well in Al-alloys, so adding Sc to your metal would probably not have been a good idea in the first place.
Best Regards,
Jostein Røyset