Galvanic reaction - 3d prints that contain carbon fibre next to aluminium

Build, Repair & Mod
1

Hi All,

Has anyone used any 3d printed materials that contain a blend of CF for motor hubs and mast mounts for use in the sea? I have just printed some huns in PET-CF that have come out beautifully but then had a thought. The CF elements in the 3D print could cause a galvanic reaction with the motor stator it touches and my aluminium props.

Does anyone have a print with CF mix against aluminium components? If so, have you noticed a reaction and how fast is it corroding the aluminium?

I wanted to try something different to PC prints but may need to go back to them as I’m not keen on coating the parts of my PET-CF to create a barrier.

Thanks for any feedback on this.

James

2

Do you think your rig will be immersed long enough for that to occur?

Perhaps attach another material that is sacrificial?

1 Like
3

I ride axis foils and notice small amounts of galvanic reaction around the foil to fuselage connections what with it being an aluminium fuse and carbon foil. Axis do put in a fibreglass barrier layer but small parts wear through over time.

I’m hopefully overthinking things. I think I’ll just give it a go and monitor it.

4

Yes the disruption of the surface coating will allow the corrosion to occur.

What I was referring to was attaching a piece of material that will corrode BEFORE the components you are concerned about.

IMG_4790
IMG_47901125×1063 162 KB

1 Like