Maybach..................

[television]

I give up. Have it your way.

It is not a case of have it my way at all, I have had to deal with it, I have always said that as long as the skin is not broken it stays reasonably OK and this confirms that.
http://aluminium.matter.org.uk/content/html/eng/default.asp?catid=180&pageid=2144416697

On 100% bitches 230 she had this problem and posted on it

 

[custodian]

Whatever

 

[WDB124066]

Chemical Engineering and Corrosion Engineering are linked; but being a Dr. of Chemistry does not necessarily make a person a good Corrosion Engineer and vice versa. Corrosion mechanisms are often complex, (it is seldom just one mechanism at work in any given situation) and they take quite some understanding. The fact that Al is corroding in automotive applications suggests something that putting a block of Al outside for a while to prove it's corrosion resistance wouldn't. And, I don't think Ph is a major contributing factor in these instances. Other forces of evil are at work here, I feel TV's table (along with water, exposure to oxygen, residual stress, alloy homogeneity, electrical currents/potential etc) may carry some relevance.

It would be good to understand why Al corrosion happens in automotive applications. It would appear in the aviation industry it is not as much of a problem as fatigue - something that hasn't been a major problem in the automotive application yet from what I understand, possibly because the members are not as stressed as what they are in aircraft??

Where is Number Cruncher, he may be able to take us further down the road to understanding the mechanisms at work in this particular instance.......

 

[television]

There is load of info on this, as I have said I have had many car where new alli panels have had to be welded in
http://dandmbr.proboards.com/index.cgi?board=bodywork&action=display&thread=297

http://www.practicalmachinist.com/vb/general-archive/ot-corrosion-repair-aluminum-74141/

http://www.google.co.uk/search?q=al...et0QXr9IGoCg&ved=0CC0QsAQ4Cg&biw=1216&bih=759

 

[custodian]

There is load of info on this, as I have said I have had many car where new alli panels have had to be welded in
http://dandmbr.proboards.com/index.cgi?board=bodywork&action=display&thread=297

http://www.practicalmachinist.com/vb/general-archive/ot-corrosion-repair-aluminum-74141/

http://www.google.co.uk/search?q=al...et0QXr9IGoCg&ved=0CC0QsAQ4Cg&biw=1216&bih=759

Feels like banging one's head against a brick wall here. The first two links you post seem clearly to substantiate my earlier posts on electrolytic corrosion. The earlier links I posted clearly show the different corrosion mechanisms in aluminium.

Not much point in continuing to post if you don't read the links that you yourself are posting.

 

[television]

I do not see the point in carrying on with this, I have only ever said that aluminium can corrode and it does.

 

[paul hayward]

i have said that Mercedes can corrode and they do .

fixed that for you