Oxidation of Metals

Oxidation of Metals

 

the reaction in which a metal and oxygen combine to form an oxide. In a more general sense, oxidation of a metal is a reaction in which atoms lose electrons to yield various compounds, such as chlorides and sulfides.

With very few exceptions, metals occur naturally in oxidized form and are called ores. Consequently, metallurgical processes involve the reduction of various compounds. With use, metals and alloys undergo gradual oxidation, or corrosion, owing to environmental effects. The course of the oxidation of a metal is determined by a thermodynamic factor—the change in free energy during the reaction—and by a kinetic factor—the reaction rate—that is largely dependent on both the nature of the oxidation products and the interaction between the products and the metal. Oxidation of metals during metallurgical production may cause the formation of scales, resulting in the loss of valuable alloying elements and steel. In many cases, metals are intentionally oxidized for protective or decorative purposes.

References in periodicals archive ?
Early stage of oxide growth," Oxidation of Metals, vol.
Hughes, "A quantitative demonstration of the grain boundary diffusion mechanism for the oxidation of metals," Philosophical Magazine A, vol.
Del Peso, "Corrosion behavior of IN-800 superalloy in waste-incineration environments: hot corrosion by molten chlorides," Oxidation of Metals, vol.
Johansson, "KCl-induced corrosion of a 304-type austenitic stainless steel in [O.sub.2] and in [O.sub.2] + [H.sub.2]O environment: the influence of temperature," Oxidation of Metals, vol.
Bringing in real- world examples from such areas as aviation, nanotechnology, and life sciences, he covers crystalline imperfections and diffusion, electrical properties of metals and semiconductors, mechanical properties, phase diagrams, ceramics and composites, polymers, corrosion and oxidation of metals and alloys, magnetic properties, and thin films.
As in past years, the Yukon College chemistry instructor offered up a fun-filled, informative chemistry program on metals, solutions, precipitation, and oxidation of metals. The interactive program, geared to the Grade 7 curriculum, gets enthusiastic approval by all who participate.
Martinelli, "Corrosion of 9Cr steel in C[O.sub.2] at intermediate temperature III: Modelling and simulation of void-induced duplex oxide growth," Oxidation of Metals, vol.
Quadakkers, "The effect of water-vapor content and gas flow rate on the oxidation mechanism of a 10%Cr-ferritic steel in Ar-[H.sub.2]O mixtures," Oxidation of Metals, vol.
Jayaraman, "Oxidation of high-aluminum austenitic stainless steels," Oxidation of Metals, vol.
Olefjord, "Influence of Mg and Si on the oxidation of aluminum" Oxidation of Metals, vol.