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Zinc Anode or Aluminum for salter or trucks?

Discussion in 'Ice Management' started by to_buy, Oct 11, 2016.

  1. to_buy

    to_buy Senior Member
    Messages: 278

    I was thinking about something and was wondering if anyone thought the same way I do about the anodes they use on boats to fight corrosion? My thought is if they use the anodes on the boats so the corrosion doesn't get to the steel, why not on plow trucks or salters.
    Let me know your thoughts
  2. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    Caveat Emptor
    Be wary! Well it looks good and you want to protect your precious vehicle. So you have become the perfect target of those snake oil merchants that prefer the green in your pocket than to sell you a honest service that achieves the intended purpose.

    No sweat, you can beat good old corrosion with a little magic powder and, of course, the green in your wallet. Here is something we have to say about the uselessness of these devices that go by different names, technical descriptions, glossy brochures, and glitzy Web sites.

    Cathodic protection (CP), which is the real name of the technique these profiteers are trying to sell you, has been used with success to protect against corrosion on many structures and systems including sea going ships, buried pipelines, and even reinforced concrete. However, there is an area where the technique has no chance to work ... the protection of cars. Human nature being what it is, many entrepreneurs have tried to use the visible successes of CP to make money by offering car owners devices to achieve such protection. They typically offer these snake oil devices at a price that could be reasonable if it did indeed work. In reality, the gizmos they offer are a lost in the suckers pocket and a gain in the entrepreneur crooks bank account. And watch out, they will disguise the same old gadgets with new patents and glitzy technical names, even throwing in a microprocessor!!

    Why these gadgets do not work?

    One has to understand the principle of CP to understand that the technique works by forcing a protective flow of electrons to the metal that needs protection. For this process to work, you need a complete electrical circuit to bring the electrons back. In the case of an outboard motor on a boat, the sea water completes the circuit. In the case of a bridge, the wet soil completes the circuit. But in your car, the only way to complete the circuit on all the metal in your car is to drive into seawater, bury in soil.

    just say'en
    Last edited: Oct 11, 2016