Topic: Oxide build up on electrodes (Read 4084 times)

gre · « **on:** June 23, 2009, 12:39:04 PM »

Hello,

While performing (8V) electrolysis on a cell constructed of concentric 316L stainless steel tube electrodes, I noticed a thick white layer had formed on anode (outside electrode) in the cell gap.. And on the inside of the cathode tube (inner electrode tube) there was a dark gray layer... What are these layers exactly?

Thanks in advance.

Borek · « **Reply #1 on:** June 23, 2009, 12:51:14 PM »

Knowing electrolyte won't hurt...

But I doubt we will be able to help. Way too many possibilities.

gre · « **Reply #2 on:** June 23, 2009, 05:48:36 PM »

What are the variables? Could it just be a 'cocktail' of oxides from the 316L composition? I was just using distilled water.

gre · « **Reply #3 on:** June 24, 2009, 02:12:19 PM »

Anyone?

gre · « **Reply #4 on:** June 25, 2009, 12:06:58 PM »

It seemed strange that a 'gray layer' would form on the inside of the cathode tube where current doesn't pass.. Is this normal?

gre · « **Reply #5 on:** June 28, 2009, 12:47:15 AM »

Could the gray layer be hexavalent chromium?

Topic: Oxide build up on electrodes (Read 4084 times)

gre

Oxide build up on electrodes

Borek

Re: Oxide build up on electrodes

gre

Re: Oxide build up on electrodes

gre

Re: Oxide build up on electrodes

gre

Re: Oxide build up on electrodes

gre

Re: Oxide build up on electrodes

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