Re: copper vs. aluminum

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

ALUMINUM resists acid, but reacts in any alkaly to form hydrogen gas and
sodium aluminate. This reaction was used to fill weather and antenna baloons
in WWII. Brass welding rods carrode little and only at the air liquid line
so insulate that point. I use titanium welding rods, they dont carrode at
any point. They hold up better than platinum. Yes I tested both, salt will
slowly eat platinum with electric current.

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Tue, 13 Aug 2002 23:43:14 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: copper vs. aluminum
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Tue, 13 Aug 2002 23:51:34 -0600
> 
> Original poster: "cd by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <vbprg1-at-hotmail-dot-com>
> 
> I used copper leads in my salty
> and got corrosion before I ran the caps the first time...NK
> they seem to corrode where the salt water meets the mineral oil
> perhaps it is due to trapped air present at that layer / level..
> 
> Also If you use a copper to aluminum electrode you will get corrosion
> I used this type of connection for my ground against advice from
> an engineer..
> Trust me aluminum touching copper plus voltage equals corrosion...
> = bad ground and bad sparks...replaced the al with a copper connector
> also it seems
> copper plus salt water plus air equals corrosion....
> 
> TC = electrical + materials engineering
> Im learning its fun
> Chris
> 
> 
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Tuesday, August 13, 2002 6:54 PM
> Subject: Re: copper vs. aluminum
> 
> 
>> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <davep-at-quik-dot-com>
>> 
>> 
>>> you are better off using Aluminium
>> 
>> Concur.
>> And Cu is more likely to corrode/electrolyze in
>> Salt water....
>> 
>> 
>>> ----- Original Message -----
>>> From: "Tesla list" <tesla-at-pupman-dot-com>
>>> To: <tesla-at-pupman-dot-com>
>>> Sent: Tuesday, August 13, 2002 7:30 PM
>>> Subject: copper vs. aluminum
>> 
>>>> Has anyone yet tried using COPPER foil in their saltwater
>>>> caps, instead of aluminum?  Seems that copper would be a
>>>> better choice, due to being a better conductor,
>> 
>> But not hugely so.  Also cheaper, so can use
>> more Al to get same conductivity.
>> 
>>>> and also being able to solder to it...
>> 
>> Good point.  IIR trick aluminum solder can
>> be found....
>> 
>> 
>> best
>> dwp
>> 
>> ...the net of a million lies...
>> Vernor Vinge
>> There are Many Web Sites which Say Many Things.
>> -me
>> 
> 
> 
> 
>