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TERME PRÉFÉRENTIEL

CHROMIUM  

DÉFINITION

  • A lustrous, brittle, hard metal. Its color is silver-gray and it can be highly polished. It does not tarnish in air. When heated it borns and forms the green chromic oxide. Chromium is unstable in oxygen. It immediately produces a thin oxide layer that is impermeable to oxygen and protects the metal below.

CONCEPT GÉNÉRIQUE

NOTE DE CHANGEMENT

  • 2018-03-07 07:52:50.0 [tstevens] Insert Concept add broader relation (CHROMIUM [9ab53717-17f1-4259-b425-0eed19c31884,310655] - CONTAMINANTS [42c6d91b-afef-4638-95c5-0d130828b2e7,84623]);
  • 2018-03-07 09:20:41.0 [tstevens] insert Definition (id: null text: A lustrous, brittle, hard metal. Its color is silver-gray and it can be highly polished. It does not tarnish in air. When heated it borns and forms the green chromic oxide. Chromium is unstable in oxygen. It immediately produces a thin oxide layer that is impermeable to oxygen and protects the metal below. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/9ab53717-17f1-4259-b425-0eed19c31884

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