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passivate
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The answer PASSIVATE has 3 possible clue(s) in existing crosswords.
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The word PASSIVATE is VALID in some board games. Check PASSIVATE in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of passivate in various dictionaries:
To treat or coat (a metal) in order to reduce the chemical reactivity of its surface.
To coat (a semiconductor, for example) with an oxide layer to protect against contamination and increase electrical stability.
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Keep reading for additional results and analysis below.
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Coat, as metal, to reduce its chemical reactivity |
Give an anticorrosive coating |
Last Seen in these Crosswords & Puzzles |
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Mar 3 2013 New York Times |
Mar 3 2013 New York Times |
Aug 21 2005 New York Times |
Possible Dictionary Clues |
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Make (a metal or other substance) unreactive by altering the surface layer or coating the surface with a thin inert layer. |
To treat or coat (a metal) in order to reduce the chemical reactivity of its surface. |
To coat (a semiconductor, for example) with an oxide layer to protect against contamination and increase electrical stability. |
Passivate might refer to |
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Passivate might be related to |
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Passivation, in physical chemistry and engineering, refers to a material becoming "passive," that is, less affected or corroded by the environment of future use. Passivation involves creation of an outer layer of shield material that is applied as a microcoating, created by chemical reaction with the base material, or allowed to build from spontaneous oxidation in the air. As a technique, passivation is the use of a light coat of a protective 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. The technique of passivation strengthens and preserves the appearance of metallics. In electrochemical treatment of water, passivation reduces the effectiveness of the treatment by increasing the circuit resistance, and active measures are typically used to overcome this effect, the most common being polarity reversal, which results in limited rejection of the fouling layer. Other proprietary systems to avoid electrode passivation, several discussed below, are the subject of ongoing research and development. * When exposed to air, many metals naturally form a hard, relatively inert surface, as in the tarnish of silver. In the case of other metals, such as iron, a somewhat rough porous coating is formed from loosely adherent corrosion products. In this case, a substantial amount of metal is removed, which is either deposited or dissolved in the environment. Corrosion coating reduces the rate of corrosion by varying degrees, depending on the kind of base metal and its environment, and is notably slower in room-temperature air for aluminium, chromium, zinc, titanium, and silicon (a metalloid); the shell of corrosion inhibits deeper corrosion, and operates as one form passivation. The inert surface layer, termed the ‘’native oxide layer‘’, is usually an oxide or a nitride, with a thickness of a monolayer of 0.1-0.3 nm (1-3 Å) for a noble metal such as platinum, about 1.5 nm (15 Å) for silicon, and nearer to 5 nm (50 Å) for aluminium after several years. |