[R-390] Some progress

Mon, 06 Jan 2003 20:17:57 -0800

Hi,  aluminum,   it's a metal,  possesses free electrons like all metals
which accounts for its very high electrical conductivity -  and why it's
attractive for wiring in the first place.  Too bad it forms a coherent
non-conducting oxide so easily - bad for junction contact - good
protection  for keeping it looking nice when anodized (nice oxide
coating).   If only it formed a conducting oxide like silver does - then
you'd have something.  Metalloids are elements that act as metals and
non-metals chemically,  not necessarily having the usual metallic luster
associated with metals,  and can form compounds with both metals and
non-metals.  Maybe US Steel scientists called it a metalloid.  Like most
metals,  except the noble ones,  it started out as dirt and wants to get
back there.  It makes great chassis material for 390a and non-a 's.
Dan.

Joe Foley wrote:

> --- Helmut Usbeck <[email protected]> wrote:
> > Sorry, Joe.  Aluminium is a metaloid. It doesn't
> > possess the
> > chemical or electrical properties of a metal, e.g.
> > iron, copper, tin,
> > mercury.  Bowled me over when I found out.  Machined
> > this stuff for years
> > and didn't know.  I had my hands on some pure
> > aluminium ingot years ago.
> > Very grainy like iron and will crumble in your hands
> > when squeezed.
> > Strange stuff without a little copper added.
> > Explains some of it's
> > different properties.
> ++++++++
> ARGH!~
>
> No, you are wrong.  Someone has read the Table of the
> Elephants incorrectly!
>
> The dividing line at that point is almost diagonal,
> separating Al, Sn (tin), and Pb (lead), from such
> things as Boron, Carbon, Phosphorous, Arsenic, and
> Chlorine.
>
> Where's Barry,....... no, not that one,....... no, the
> other one,........ Dr. Ornitz to the chatroom, Dr.
> Ornitz?
>
> Joe
>
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