Thread: CAN YOU BY DOOR SKINS IN AUSTRALIA ??

I'd also be keen on a set of 4 galvanised door frames & skins depending on price. Keep us posted.

Regarding powder coating / galvanising - when I fisst looked intpo galvanising doorframes I was concerned about galvanic corrosion due to different electode potentials between zinc and aluminium, but in practice it doesn't happen (think county with galvanised cappings Vs defender painted cappings).

Can't remember the exact reason why (something to do the rate of corrosion and resulting pH levels - isuzurover might be able to offer a better explanation), but suffice to say, I'm convinced its not going to be an issue.

Cheers

Bojan

If one was to use Sikaflex to glue the skin to the frame there would be NO contact between the skin and frame so no corrosion ever
Its really good stuff,just make sure you get the correct grade for the job.
Andrew

Originally Posted by Offender90

I'd also be keen on a set of 4 galvanised door frames & skins depending on price. Keep us posted.

Regarding powder coating / galvanising - when I fisst looked intpo galvanising doorframes I was concerned about galvanic corrosion due to different electode potentials between zinc and aluminium, but in practice it doesn't happen (think county with galvanised cappings Vs defender painted cappings).

Can't remember the exact reason why (something to do the rate of corrosion and resulting pH levels - isuzurover might be able to offer a better explanation), but suffice to say, I'm convinced its not going to be an issue.

Cheers

Bojan

The standard electrode potential for Aluminium is -1.66v, for Zinc it is -0.76v and for iron it is +0.085V. Zinc is negative as is aluminium, and is reasonably close to it, so that the cell formed between zinc and aluminium is not very active, unlike that between aluminium and iron (or steel).

John

Originally Posted by LandyAndy

If one was to use Sikaflex to glue the skin to the frame there would be NO contact between the skin and frame so no corrosion ever
Its really good stuff,just make sure you get the correct grade for the job.
Andrew

not strickly true as land rover put a mastic in a have arsed attempt to stop that when they build them up, also they usually stick sealing tape to stretch the panel flat and insulate between ....it has been proven that powder coating works i will stick with that i reckon and a yearly dose of waxoyl

Originally Posted by JDNSW

The standard electrode potential for Aluminium is -1.66v, for Zinc it is -0.76v and for iron it is +0.085V. Zinc is negative as is aluminium, and is reasonably close to it, so that the cell formed between zinc and aluminium is not very active, unlike that between aluminium and iron (or steel).

John

that is appreciated John cheers, would zero be preferable to some reaction long term, and as cheap but effective fixes go which is cheaper as a treatment gal or powder ???
also could you have a gander at a post i have done called aqua rover i have some issues regards andy