I have my late grandpa’s silver spoon attached to my fridge with a neodymium magnet. What kind of chemical reaction causes that discolouration?

  • ThePantser@sh.itjust.worksEnglish
    2·
    5 小时前

    Could be caused by whatever coating is on the magnet, I tried to see if sulfur could be a component of a coating but gave up. Maybe others will just know.

    • 1stQ@feddit.orgOP
      1·
      5 小时前

      That would make sense. I searched for neodymium coating and found that they’re often coated with Nickel-Copper-Nickel or Zinc. 🤔