What does passivation mean?

Definitions for passivation

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  1. passivationnoun

    The process of making a material passive (non-reactive) in relation to another material prior to using the materials together.

  2. passivationnoun

    The spontaneous formation of a hard non-reactive surface film (usually an oxide or nitride) that inhibits further corrosion.


  1. Passivation

    Passivation, in physical chemistry and engineering, refers to a material becoming "passive," that is, being less affected by environmental factors such as air or water. It involves a shielding outer layer of corrosion which can be applied as a microcoating or found occurring spontaneously in nature. Passivation is useful in strengthening and preserving the appearance of metallics. As a technique, passivating is the use of light coat of material such as metal oxide to create a shell against corrosion. Passivation can occur only in certain conditions, and is used in microelectronics to enhance silicon. In air, many metals form a hard, relatively inert surface naturally. The reduction of the corrosive rate will vary depending on the metal and its environment. It is notably slowed at room temperature in air for aluminium, chromium, zinc, titanium, and silicon. The shell inhibits deeper corrosion, and that is the key factor. The layer, often termed the native oxide layer, is usually an oxide or nitride with a thickness of a monolayer for a noble metal like platinum, about 15 Å for silicon and nearer to 50Å for aluminium after several years.

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  1. Chaldean Numerology

    The numerical value of passivation in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of passivation in Pythagorean Numerology is: 1

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"passivation." Definitions.net. STANDS4 LLC, 2023. Web. 23 Mar. 2023. <https://www.definitions.net/definition/passivation>.

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    lacking in nutritive value
    • A. jejune
    • B. lank
    • C. splay
    • D. motile

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