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Why piezo's ceramic has got copper color?

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  • Why piezo's ceramic has got copper color?

    SOm of my piezos, after weeks, have got a kind of red like copper color on the ceremic. They seem like old, rusty, and the give the impression of not working but in deed they work. Other piezos I had in the same place did not get this color. Why some piezos adquire this color? Maybe air contact? I have now covered the ceramic of the new rim piezos I am installing with tape, in case air is making them rusty.

    Do you know why this phenomenom happen?

  • #2
    Hi, i've made a post about this recently.

    on mine its the ceramic that is turing a brownish grey.
    I got mine from Maplins (UK).

    I dont think that its caused any problems so i wouldn't worry about it.

    My kit 25/02/09 http://www.youtube.com/watch?v=anzGxUMv3U4

    Share the knowledge and evolve together.