Results for: Corrosion

Answered

In Science

What is corrosion?

Corrosion is a chemical reaction in which molecules break down dueto a chemical reaction with its surroundings. Most often, corrosionis the electro-chemical oxidation of a met… ( Full Answer )

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In Chemistry

What is wet corrosion and galvanic corrosion?

Galvanic corrosion is an electrochemical processin which one metal corrodes preferentiallywhen in electrical contact with a different type of metal and bothmetals ar… ( Full Answer )

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In Chemistry

What is Galvanic Corrosion?

Galvanic Corrosion, is a form of Corrosion that take place when two different metal are placed in contact, or electrically connected, and an electrolyte is present. The elec… ( Full Answer )

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In Science

How do you stop corrosion?

Depends on what type of corrosion it is. If it is general/uniform corrosion (i.e. rust), you could use an anode, galvanizing, paint, powder coating or various types of plating… ( Full Answer )

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In Science

How the corrosion happen?

There are different types of corrosion - but the most common one is rusting which happens when Iron is exposed to Oxygen and Water. The surface of a piece of Iron in the p… ( Full Answer )

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In Chemistry

How do you measure corrosion?

To correctly measure corrosion use electrochemical instrumentation: A number of electrochemical techniques have been developed specifically for corrosion measurement. These ar…e generally referred to as "DC Techniques". Among these techniques are Polarization Resistance, Tafel Plots, Potentiodynamic Plots, Cyclic Polarization, and Electrochemical Potentiokinetic Reactivation. Corrosion is the chemical or electrochemical reaction between a material, usually a metal, and its environment that produces a deterioration of the metal and its properties. A chemist would classify corrosion as an oxidation, an electron-transfer reaction involving the loss of electrons. Since corrosion is an electrochemical process, it follows that electrochemical techniques and electrochemical instrumentation can be used to study the corrosion process. The reasons for the popularity of electrochemical techniques for corrosion measurement are based in practicality: -They are fast. Corrosion, even rapid corrosion, is a slow process. Real-time weight loss measurements need days and sometimes weeks to make a reliable measurement of corrosion rate. Electrochemical instrumentation can make a corrosion rate measurement in minutes or hours. - They are sensitive. Modern, well-designed electrochemical instrumentation can measure extremely low corrosion rates. - They are accurate. Electrochemical techniques have been exhaustively tested before finding general acceptance. Organizations such as ASTM and NACE have sponsored a number of symposia and published peer-reviewed papers describing the use and results of these techniques. -They are versatile. Electrochemical techniques can be used to study a wide range of corrosion-related phenomena. The rate of uniform corrosion can be measured. The tendency of a metal to exhibit localized (pitting or crevice) corrosion can be measured. The passivation behavior of a corroding system can be studied. Galvanic corrosion can be quantitated. Sensitization effects can be studied. Electrochemistry can be used in the laboratory or in the field. Measurements can be made on the lab bench or in a pipeline or in an autoclave or in a slow strain rate machine. Kimber :) ( Full Answer )

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In Chemistry

How can corrosion be reduced?

The corrosion on iron can be reduced by suitable thin layer of element to be electroplated.

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In Chemistry

What is a corrosive solution?

Any solution that is responsible for corrosion of substances is a corrosive solution. Most commonly we use iron's rusting as an example of corrosion which is formed by moi… ( Full Answer )

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In Chemistry

What is waterline corrosion?

Waterline corrosion: when water is stored in a metallic tank, it is observed that the metal below the waterline gets corroded. It is because the water below the waterline is … ( Full Answer )

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In Car Electronics and Lights

How corrosion occurs?

Corrosion in a vehicle's electrical system can occur for several different reasons. Moisture on electrical contacts can cause copper to rust. This rust is blueish green and ha… ( Full Answer )