Comment on Lab discovers titanium-gold alloy that is four times harder than most steels

• A_A@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Passivation (chemistry)

  Passivation is the use of a light coat of a protective material, such as metal oxide, to create a shield against corrosion.

  Titanium, aluminum, chromium, nickel and many other metals passivates rapidly in the presence of oxygen and water.

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  • HubertManne@kbin.social ⁨1⁩ ⁨year⁩ ago

    Thank you. I enjoyed https://en.wikipedia.org/wiki/Passivation_(chemistry). I don't see the opposite nature though as being to incongruous as the material that passivates does so such that it never really is utilized without its coating while the non passivating just never gets the coating. In both cases, in the state they are utilized, they are very unreactive.

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    • A_A@lemmy.world ⁨1⁩ ⁨year⁩ ago

      I think I get what you say : if I take your words, you could say 2 metals are “opposite in nature” in the sense that they would form a galvanic couple as described billow.

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