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Corrosion Behavior

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Corrosion of Aluminum and Its Alloys: Forms of Corrosion

Corrosion is the chemical reaction of a metal, in this case aluminum, with its environment, which leads to the deterioration of the properties of metals, aluminum in this case. Aluminum is a very reactive metal, but it is also a passive metal. This contradictory nature is explainable because nascent aluminum reacts with oxygen or water and forms a coherent surface oxide which impedes further reaction of aluminum with the environment.

Corrosion of Carbon Steel

Carbon steel, the most widely used engineering material, accounts for approximately 85%, of the annual steel production worldwide. Despite its relatively limited corrosion resistance, carbon steel is used in large tonnages in marine applications, nuclear power and fossil fuel power plants, transportation, chemical processing, petroleum production and refining, pipelines, mining, construction and metal-processing equipment.

Corrosion off Copper and Copper Alloys

COPPER AND COPPER ALLOYS are widely used in many environments and applications because of their excellent corrosion resistance, which is coupled with combinations of other desirable properties, such as superior electrical and thermal conductivity, ease of fabricating and joining, wide range of attainable mechanical properties, and resistance to biofouling...

Corrosion of Magnesium and Magnesium Alloys

The corrosion resistance of magnesium or magnesium parts depends on similar factors that are critical to other metals. However, because of the electrochemical activity of magnesium, the relative importance of some factors is greatly amplified.
This article will discuss the effects of heavy-metal impurities, the type of environment (rural atmosphere, marine atmosphere, elevated temperature etc), the surface condition of the part (such as as cast, treated, and painted), and the assembly practice. In some environments magnesium part can be severely damaged unless galvanic couples are avoided by proper design or surface protection...

Corrosion of Maraging Steels

Maraging steels can offer good corrosion resistance in particularly tough environments such as industrial and marine atmospheres due to the characteristic precipitation hardening of their intermetallic compounds.
With use in advanced technologies and in sectors such as aerospace, nuclear and gas turbine maraging steels are emerging as an influential material in these specific applications.

Corrosion of Metals and Their Alloys

Corrosion involves the interaction (reaction) between a metal or alloy and its environment. It is affected by the properties of both the metal or alloy and the environment. In this discussion, only the environmental variables will be addressed, the more important of which include: pH (acidity), Oxidizing power (potential), Temperature (heat transfer), Velocity (fluid flow), Concentration (solution constituents).