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Corrosion Behavior

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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).

Corrosion of Nickel-Base Alloys

Nickel and nickel-base alloys are vitally important to modern industry because of their ability to withstand a wide variety of severe operating conditions involving corrosive environments, high temperatures, high stresses, and combinations of these factors.
There are several reasons for these capabilities. Pure nickel is ductile and tough because it possesses a face-centered cube crystal structure up to its melting point. Nickel has good resistance to corrosion in the normal atmosphere, in natural freshwaters and in deaerated nonoxidizing acids, and it has excellent resistance to corrosion by caustic alkalis...

Corrosion of Titanium Alloys: Part One

Titanium is well known for its extremely tough characteristics in severe environments with specific applications in the chemical process industry, energy, desalination, military and many more.
The most important properties of titanium in relation to corrosion resistance are its immunity to both pitting and stress corrosion.

Corrosion of Titanium Alloys: Part Two

In general titanium has excellent resistance against corrosion but this does not mean it is infallible and susceptibility still remains to a range of corrosive forces.
The main corrosion areas to be considered when dealing with titanium alloys are erosion corrosion, stress corrosion cracking, corrosion fatigue, and crevice corrosion.

Corrosion of Titanium and Titanium Alloys

Titanium alloys exhibit exceptional corrosion resistance properties due to the formation of stable, protective oxide films on their surfaces. Originally developed for aerospace applications in the 1950s, these materials have expanded into industrial sectors due to their high strength-to-density ratios and resistance to corrosive environments.

Corrosion of Zinc

This comprehensive article examines the corrosion behavior of zinc and zinc-based protective coatings in various environments. It details the mechanisms of zinc corrosion in atmospheric, aqueous, and chemical conditions, with particular emphasis on the formation of protective films that contribute to zinc's corrosion resistance. The article explores seven major zinc coating methods, including hot dip galvanizing, continuous-line galvanizing, and electrogalvanizing, discussing their industrial applications and comparative advantages.