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Thread: corrosion through dissimilar metals

  1. #1
    Senior Member blabbermouth edhewitt's Avatar
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    Default corrosion through dissimilar metals

    I was thinking that silver and mother of pearl scales would look nice (eventually) after considering various other metals such as copper and Aluminium, until I remembered Ali and steel will corrode if exposed to an electrolyte, though I have seen old ads for razors with Ali scales - stainless blade maybe. And that copper would be fairly heavy.
    Anyway will silver react with carbon steel?
    And:
    I want a silver scale with MOP inset, then an ivy patern or similar carved into the MOP and have silver poured into the carving and connecting to the silver around the MOP, will the heat from the silver affect the MOP?
    This is ages off, if ever as it will probably cost a screaming fortune in labour, but is it possible?
    Thanks ed
    Bread and water can so easily become tea and toast

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    Senior Member blabbermouth JimmyHAD's Avatar
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    I've seen many old Sheffields with sterling silver scales. I have an old W&B with mother of pearl scales reinforced with what is probably nickel silver. I think as long as the metals aren't exposed to the elements, where that galvanic action can take place ..... or whatever the correct terminology for the chemical reaction is ...... there wouldn't be a problem.

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    edhewitt (07-06-2013)

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    There is always corrosion between different metalls. The less noble metall is attacked. But as you already said, there must be an electrolyte so the reaction can take place. If you dont leave the razor wet, everything should be fine. You can use teflon washers to minimize the contact surface if you want to be on the safe side.

    Concerning your other question. Yes, pouring silver in the MOP will affect it, i am quite sure it will destroy it. if you want to do such an inlay the only chance to do it is to use pure silver (999/000 fine) and not sterling. Then you must soft anneal it and then rub it in the carving with a polished hardened steel needle. (a tool used by goldsmiths and engravers)
    To get it stuck in the carving, the carving must be undercut.
    This could work, but ist very difficult to do and the risk of breaking the MOP is very high.
    I wish you good luck.

    cheers,
    Ulrik
    JimmyHAD and adrspach like this.

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    edhewitt (07-06-2013)

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