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Chemistry
Elements and Compounds

What is dry oxidation?


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2008-04-24 23:54:40
2008-04-24 23:54:40

Dry oxidation is a process in which silicon dioxide is grown from silicon in a furnace in the prescence of oxygen. In contrast, wet oxidation is performed with steam.

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Dry oxidation has a lower growth rate than wet oxidation although the oxide film quality is better than the wet oxide film. Therefore thin oxides such as screen oxide, pad oxide, and especially gate oxide normally use the dry oxidation process. Dry oxidation also results in a higher density oxide than that achieved by wet oxide and so it has a higher breakdown voltage In case of wet oxidation where water is use instead of oxygen, the water molecule can dissociate at high temperatures to form hydroxide OH that can diffuse in the silicon faster than molecular O2. Therefore the wet oxidation process has a significantly higher oxidation rate than the dry oxidation. It is used to grow thick oxides such as masking oxide, blanket field oxide, and the LOCOS oxide.

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High temperature destroys microorganisms .Moist and dry heat destroy parts of microbes via oxidation and incineration .

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You let copper soak in vinegar and salt for 20 minutes and dry them throughly

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Because oxidation occurs when oxygen is exposed to the paint. Once your paint is dry it's no use. So never leave your paint open.

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Oxidation occurs at the anode ("an ox") and reduction occurs at the cathode ("red cat"). See the Web Link to the left for the specific reaction in a dry cell.


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