 | Home > Maintenance & Modifications > Rivits to avoid Galvanic Corrosion |
 
|
|
|
| TexasRover Member Since: 24 Nov 2022 Location: Paris Posts: 1205   
|
The only way to avoid galvanic corrosion is to electrically isolate the two metals, which is tricky with rivets. Ideally you would use plastic/PTFE sleeved rivets if that exists or bolts and nuts with washers etc. in professional applications they use glue, but that's not easy to get right as a DIY application
|
||
8th Mar 2025 7:25pm |
|
| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1847 
|
Inter metallic corrosion needs an electrolyte to happen. Keep dissimilar metals apart and dry and there is no problem. A good coat of polyurethane sealer adhesive between any dissimilar surfaces will keep them apart and dry, a dab of the same on a quality sealed rivet will do the same under its head. The same on the rear of the rivet once set will help.
Don't forget the basics like de burring holes and removal of swarf HTH Keith |
||
|
8th Mar 2025 7:39pm |
|
| 34064 Member Since: 12 Dec 2023 Location: South Central Posts: 225  
|
Duralac is what you need which is a jointing compound for joining dissimilar metals used it for years works well on trains works well on land rovers too 110 Td5 Ex Utilities slowly converting into a pop top camper one day
Build thread:https://www.defender2.net/forum/post1024784.html#1024784 |
||
|
8th Mar 2025 9:41pm |
|
| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1847
|
You're correct on Duralac, but it has no adhesive properties and goes hard / dries out with age.
Realistically if you put anything sealer wise between the panels from seam sealer, insulation tape, duralac, tiger seal even silicone will be better than the nothing fitted at the factory on body mappings etc. HTH Keith |
||
|
8th Mar 2025 10:04pm |
|
| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3508  
|
In the boating industry, monel rivets used to be used for their good mechanical properties, and the resistance to corrosion, plus apparently not far on the galvanic table to aluminum. They are less common nowadays.
My old boat of 40 years had monel rivets on its mast, and they looked as good as the day they were installed notwithstanding the corrosive environment of the Mediterranean sea. Pity boat was sold  1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
||
|
9th Mar 2025 1:36am |
|
|
|
| All times are GMT + 1 Hour |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2025 Futuranet Ltd & Martin Lewis
