Corrosion fatigue is a special case of stress corrosion caused by the combined effects of cyclic stress and corrosion.

Concentration cell corrosion occurs when two or more areas of a metal surface are in contact with different concentrations of the same solution.

Hydrogen can cause a number of corrosion problems. Hydrogen embrittlement is a problem with high-strength steels, titanium, and some other metals.

This type of corrosion occurs under painted or plated surfaces when moisture permeates the coating.

This is also called general corrosion. The surface effect produced by most direct chemical attacks (e.g., as by an acid) is a uniform etching of the metal.

Concrete is a widely-used structural material that is frequently reinforced with carbon steel reinforcing rods, post-tensioning cable or prestressing wires. The steel is necessary to maintain the strength of the structure, but it is subject to corrosion.

There are approximately 235,000 conventionally reinforced concrete (CRC) bridges in-service on the federal highway system. Of these, over 21,000 were rated as structurally deficient 1, many attributed to chloride-induced corrosion damage 2, although a comprehensive study has not been undertaken to quantify the actual number of corrosion damaged CRC bridges. An example of the type of corrosion damage is shown below.

The appearance of weathering steel or high strength low alloy (HSLA) steel may also be affected by other factors. During recrystallization the rust will trap particulate matter on the surface. If this material is colored it will contribute to the appearance of the rust. For example, in dirty industrial atmospheres the rust on weathering steel can be almost black due to the incorporation of airborne dirt. Chemical cleaning treatments such as acids can convert the hydrated iron oxide to other iron compounds of different color or appearance. In atmospheres with significant content of sulfur oxides deposits of white to yellow ferrous sulfate may appear in the rust on weathering steel.

Soil corrosion is a complex phenomenon, with a multitude of variables involved. Chemical reactions involving almost each of the existing elements are known to take place in soils, many of which are not yet fully understood.The relative importance of variables changes for different materials, making a universal guide to corrosion impossible.

Rusting of iron consists of the formation of hydrated oxide, Fe(OH)₃, FeO(OH), or even Fe₂O₃.H₂O. It is an electrochemical process which requires the presence of water, oxygen and an electrolyte. In the absence of any one of these rusting does not occur to any significant extent. In air, a relative humidity of over 50% provides the necessary amount of water and at 80% or above corrosion of bare steel is worse.

The resistance offered to the movement of one body past another body with which it is in contact. The amount of friction depends on the nature of the contact surfaces and on the magnitude of the force pressing the two bodies together, but not on the surface area of the contact surface.

High temperature corrosion is chemical deterioration of a material (typically a metal) under very high temperature conditions.

Rust is a general term for a series of iron oxides, usually red oxides, formed by the reaction of iron with oxygen in the presence of water or air moisture. Several forms of rust are distinguishable visually and by spectroscopy, and form under different circumstances.

Cathodic protection (CP) is a technique to control the corrosion of a metal surface by making that surface the cathode of an electrochemical cell.