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| Author | : D. D. Macdonald |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1974 |
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| Total Pages | : |
| Release | : 2000 |
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The solubility behavior of transition metal oxides in high temperature water is interpreted by recognizing three types of chemical reaction equilibria: metal oxide hydration/dehydration, metal oxide dissolution and metal ion hydroxocomplex formation. The equilibria are quantified using thermodynamic concepts and the thermochemical properties of the metal oxides/ions representative of the most common constituents of construction metal alloys, i.e., element shaving atomic numbers between Z = 22 (Ti) and Z = 30 (Zn), are summarized on the basis of metal oxide solubility studies conducted in the laboratory. Particular attention is devoted to the uncharged metal ion hydrocomplex, M{sup Z}(OH){sub Z}(aq), since its thermochemical properties define minimum solubilities of the metal oxide at a given temperature. Experimentally-extracted values of standard partial molal entropy (S°) for the transition metal ion neutral hydroxocomplex are shown to be influenced by ligand field stabilization energies and complex symmetry.
| Author | : N. Birks |
| Publisher | : Hodder Education |
| Total Pages | : 216 |
| Release | : 1983 |
| Genre | : Science |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 886 |
| Release | : 1975-12 |
| Genre | : Nuclear energy |
| ISBN | : |
| Author | : David John Young |
| Publisher | : Elsevier |
| Total Pages | : 593 |
| Release | : 2008-10-03 |
| Genre | : Business & Economics |
| ISBN | : 008044587X |
The book is concerned with understanding the fundamental mechanisms of high temperature alloy oxidation. It uses this understanding to develop methods of predicting oxidation rates and the way they change with temperature, gas chemistry and alloy composition. The focus is on designing (or selecting) alloy compositions which provide optimal resistance to attack by corrosive gases. . Emphasises quantitative calculations for predicting reaction rates and the effects of temperature, oxidant activities and alloy compositions. . Uses phase diagrams and diffusion paths to analyse and interpret scale structures and internal precipitation distributions . Provides a detailed examination of corrosion in industrial gases (water vapour effects, carburisation and metal dusting, sulphidation) . Text is well supported by numerous micrographs, phase diagrams and tabulations of relevant thermodynamic and kinetic data . Combines physical chemistry and materials science methodologies.
| Author | : |
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| Total Pages | : 34 |
| Release | : 1793 |
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| Release | : 2000 |
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The results of high temperature solubility studies at ORNL are presented in which mainly direct pH measurements were made of aqueous solutions in contact with the crystalline solid phases: Al(OH)3, AlOOH, Fe3O4, Mg(OH)2, Nd(OH)3, and ZnO. Examples are highlighted of specific phenomena such as: the kinetics of gibbsite and boehmite dissolution and precipitation; the appearance of metastable equilibria in the dissolution of Fe3O4; the extremely rapid precipitation of crystalline brucite, Mg(OH)2; and anomalies in the apparent solubility profiles of AlO(OH) and ZnO. General trends associated with the effects of temperature and ionic strength are mentioned. Some of the potentiometric investigations were augmented by conventional batch [AlO(OH) and ZnO], and flow-through column (ZnO) experiments. In the additional case of ZnCr2O4, the extremely low solubility of this spinel permitted application of only the latter technique and these results are discussed in terms of the measured chromium levels that resulted from incongruent dissolution.
| Author | : Miguel A Blesa |
| Publisher | : CRC Press |
| Total Pages | : 434 |
| Release | : 2018-02-06 |
| Genre | : Science |
| ISBN | : 1351078968 |
The dissolution behaviour of metal oxides has applications in many scientific fields, each with its own jargon and methodological approach. Any scientist interested in this subject should understand the literature from these various areas. This book describe different specialized treatments to surface-controlled metal oxide dissolution reactions and translates them into a unified picture based on surface complexion
| Author | : United States. Patent Office |
| Publisher | : |
| Total Pages | : 1786 |
| Release | : 1967 |
| Genre | : Patents |
| ISBN | : |
