This book provides a useful reference for researchers and production engineers in industry. It covers a current 'hot' topic with important applications for energy saving and ecological issues. Basic knowledge of raw materials, evaluation and applications of porous materials are described along with the latest production methods of porous materials including sintering methods, sol-gel processing, and leaching. This interdisciplinary book thus provides a much needed comprehensive and systematic coverage of porous materials, from three internationally recognised authors. The text has been developed from successful short courses run at Materials Research Society meetings.
Preface. 1: Introduction. 1.1. What are porous materials? 1.2. Classification of porous materials. 2: Powder compacts and green bodies for porous materials. 2.1 .Sintering as a process for producing porous materials. 2.2. The raw powder. 2.3. Green bodies. 2.4. Pore forming agents. 3: Sintering mechanisms and advanced sintering methods for porous materials. 3.1. Theory of sintering for porous materials. 3.2. Conventional sintering processes for producing porous materials. 3.3. Advanced production methods for porous materials. 4: Sol-gel processing, designing porosity, pore size and polarity, and shaping processes. 4.1. Introduction. 4.2. Factors affecting porosity, pore size and plarity. 4.3. Xerogels. 4.4. Aerogels. 5: Applications of porous materials. 5.1. Filters. 5.2. Catalysts. 5.3. Bioreactors. 5.4. Cells. 5.5. Grinding wheels. 5.6. Gas sensors. 5.7. Gas separators. 5.8. Electrodes. 5.9. Porous metal bearings. 5.10. Thermal insulators. 5.11. Capacitors. 5.12. Impact energy absorbers. 5.13. Heaters and heat exchangers. 5.14. Molds. 5.15. Surgical implants. 6: Properties and evaluation techniques for porous materials. 6.1. Density and porosity. 6.2. Pore size. 6.3. Specific surface area. 6.4. Fluid permeability. 6.5. Mechanical properties. 6.6. Entropy (surface state of porous materials). Appendix A: Entropy of porous materials. A.1. Properties of entropy. A.2. Absolute temperature. A.3. Potential energy. A.4. Basic thermodynamics. A.5. Entropy. A.6. More on potential theory and thermodynamics. A.7. Proof of nonpotentiality of the gradient of energy functions. A.8. Conclusions. Index.