Corrosion of Ceramic and Composite Materials Part 3 docx

... right. Expressing the free energy change of the reaction in terms of the partial pressures of oxygen and nitrogen, one obtains: (2 .33 ) One can then calculate the partial pressure ratio required for the ... continued reaction. The reduction of oxide ceramics at various partial pressures of oxygen may also be of interest and can be obtained from the examination of Ellingham...

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... Reading 32 0 7.7 Exercises, Questions, and Problems 32 1 References 32 2 8 PROPERTIES AND CORROSION 33 3 8.1 Introduction 33 3 8.2 Mechanisms 33 7 8.2.1 Crystalline Materials 33 7 8.2.2 Glassy Materials 33 9 8 .3 ... 202 5.2.2 Nitrides and Carbides 209 5.2 .3 Borides 231 5.2.4 Silicides 233 5.2.5 Superconductors 234 5 .3 Attack by Solids 234 5 .3. 1 Silica 234 5 .3...

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... of formation of the products. An example of the comparison of free energy of reaction and the enthalpy of reaction at several temperatures is given below for the reaction of alumina and silica ... discussion of the order of reactions and the various equations can be found in any book on kinetics [2. 136 ]. Integration of Eq. (2.67) between concentration limits of c...

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... Ceram. Soc. 1994, 77 (3) , 612. 2.18. Pons, A.; Parent, A. The activity of the oxygen ion in glasses and its effect on the corrosion of refractories. (Fr) Verres Refract. 1969, 23 (3) , 32 4 33 3. 2.19. Blau, ... the manufacturers of consumable grinding and polishing supplies. One particular article that offers some new ideas was that of Damgaard and Geels [3. 5]. They empha...

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... Boston, 19 93. 3. 3. Brady, P.V.; House, W.A. Surface-controlled dissolution and growth of minerals. In Physics and Chemistry of Mineral Copyright © 2004 by Marcel Dekker, Inc. 142 Chapter 3 3.14. Lodding, ... Characterization of corroded ceramics by SIMS. In Corrosion of Glass, Ceramics and Ceramic Superconductors; Clark, D.E., Zoitos, B.K., Eds.; Noyes Publications: Par...

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... 517–520. 6 .32 . White, G.S.; Greenspan, D.C.; Freiman, S.W. Corrosion and crack growth in 33 % Na 2 O–67%SiO 2 and 33 % Li 2 O–67% SiO 2 glasses. J. Am. Ceram. Soc. 1986, 69 (1), 38 –44. 6 .33 . Hench, ... Pub.: Switzerland, 1994; Vol. 94–95, 181–208. 6. 43. Oda, K.; Yoshio, T. Properties of Y 2 O 3 –Al 2 O 3 –SiO 2 glasses as a model system of grain boundary phase of S...

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... Metcalfe and Chap. 5, Silicon Carbide, page 2 23, at low partial pressures of Corrosion of Composites Materials 30 1 itself through the oxidation of the interface between the fiber reinforcement and ... films. J. Am. Ceram. Soc. 1976, 59 (1–2), 37 39 . 6.80. Hench, L.L. Surface modification of bioactive glasses and ceramics. In Corrosion of Glass Ceramics and Cerami...

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... reinforced ceramic and intermetallic composites. In Ceramic Transactions, Advances in Ceramic- Matrix Composites; Bansal, N.P., Ed.; Am. Ceram. Soc.: Westerville, OH, 19 93; Vol. 38 , 235 –248. 7.44. ... Debonding and Fiber Cracking in Brittle Matrix Composites. J. Am. Ceram. Soc. 1989, 72, 230 0– 230 3. Lowden, R.A. Fiber Coatings and the Mechanical Properties of Fiber- Reinfor...

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... salt degradation of Si 3 N 4 ceramics. Ceram. Bull. 1980, 59 (4), 4 43 446, 452. 8.45. Tressler, R.E.; Meiser, M.D.; Yonushonis, T. Molten salt corrosion of SiC and Si 3 N 4 ceramics. J. Am. ... Inc. Properties and Corrosion 34 9 tests indicated the presence of stress-enhanced oxidation at 1000°C, with failure times ranging from 19 to 93 hr at an applied load of 138 MPa...

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... Hot corrosion behavior of coated covalent ceramics. Adv. Ceram. Mater. 1988, 3 (6), 542–547. 9.9. Gogotsi, Yu.G.; Lavrenko, V.A. Corrosion protection and development of corrosion- resistant ceramics. ... liquid will condense. A form of atmospheric corrosion and equivalent to condensation corrosion. Dissolution Corrosion The corrosion of a ceramic through the solut...

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