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Corrosion Behavior

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Corrosion of Zirconium Alloys: Part One

Zirconium alloys are principally used in highly corrosive environments like nuclear reactors which have very specific conditions connected to the fuel burn up cycles and water chemistry.
Although corrosion resistance in these materials is superior, with adequate mechanical properties, and low thermal neutron cross-section, they are still prone in such harsh conditions to lifespan limiting corrosive forces.

Corrosion of Zirconium Alloys: Part Two

Zirconium is a common choice for nuclear applications due to its low thermal neutron capture cross section which is about 30 times less than that of stainless steel.
A specific key useful benefit of zirconium alloys are their specific resistance to acids including hydrochloric, sulfuric and phosphoric acids which means applications which require direct contact with these substances is particularly suited.

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 protection of Steel: Part One

This comprehensive article explores the critical aspects of steel corrosion protection, focusing on both the mechanisms of corrosion and various protective methods. The text examines three primary protection strategies: passive barrier protection, active protection, and sacrificial protection, with particular emphasis on modern coating technologies.

Corrosion Protection of Steel: Part Two

Metallic coatings provide a layer that changes the surface properties of the work piece to those of the metal being applied. The work piece becomes a composite material exhibiting properties generally not achievable by either material if used alone.
Metallic coatings are deposited by electroplating, electroless plating, spraying, hot dipping, chemical vapor deposition and ion vapor deposition.

Corrosion Resistance of Ferritic Stainless Steels

Ferritic stainless steels have certain useful corrosion properties, such as resistance to chloride stress-corrosion cracking, corrosion in oxidizing aqueous media, oxidation at high temperatures and pitting and crevice corrosion in chloride media. These steels contain above approximately 13% Cr and precipitate a prime phase in 350°C to 540°C range, and the maximum effect is at about 470°C. Because precipitation hardening lowers temperature ductility, it must be taken into account in both processing and usage of ferritic stainless steels, especially those with higher chromium content.