Mechanisms of High Temperature Corrosion

Erscheinungsjahr 2008
ISBN: 978-0-87849-183-4
Verlag: Trans Tech Publications

Sonstiges, Englisch, 335 Seiten, Format (B × H): 125 mm x 142 mm, Gewicht: 200 g

The oxidation of metals is, by definition, a reaction between a gas and a solid which usually produces a solid reaction product. At first glance, this would therefore seem to be a very simple process but, in fact, it is considerably more complex. One would like to think that the reaction product, i.e., the scale that forms on the metal, acts as a physical barrier between the reactants, and that the reaction should thus cease once the barrier is established. We know that this is unfortunately not the case, because transport of matter through the scale allows the reaction to continue. We also know that, because of density-differences between the metal and its oxide, the scale may not be sufficiently complete in coverage or may not adhere to the substrate because of cracking, spalling and detachment (wrinkling). In some extreme cases, the scale may even be a liquid which simply drips from the surface, or it may volatilize at operational temperatures. The reaction between a gas and a metal is truly very complicated.

Autoren/Hrsg.

Sarrazin, Pierre

Galerie, Alain

Fouletier, Jacques

Fachgebiete

• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde

Inhaltsverzeichnis

1. Thermodynamics of Mixtures2. Gas-Solid Equilibrium1. The Practical Importance of High Temperature Corrosion2. Experimental Techniques3. Phenomenological Laws1. Introduction2. Defects Responsible for the Growth of Compact Scales3. Defects Responsible for the Growth of Porous Scales1. Introduction2. Formulation of the Elementary Processes3. Calculation of the Reaction Rate of the Elementary Processes4. General System of Equations5. Overall Reaction Rate Limited by one of the Elementary Chemical Processes6. Reaction Rate in Mixed Regimes1. Introduction2. Formation of Compact Subscales3. Formation of Porous and Partially Porous Scales1. Atmosphere Control2. Use of Alloys3. Protection by Coatings1. Stoichiometry and Electrical Conductivity of NiO2. Stoichiometry of Nb2O53. Phase Equilibria in the System Ni-S-O at 900 K4. Manganese Sulphide (MnS) Properties - Manganese Sulphidation5. Properties of Cobalt Oxide (CoC) - Oxidation of Cobalt6. Properties of Copper (I) Oxide Cu2O - Oxidation of Copper7. Niobium Oxidation in Oxygen or Water Vapour8. Lead Chlorination9. Oxidation of Zircaloy 4