Novel Colloidal Forming of Ceramics

by Huang, Yong; Yang, Jinlong

ISBN13: 9783642122804

ISBN10: 3642122809

Format: Hardcover

Pub. Date: 2011-05-27

Publisher(s): Springer Verlag

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Summary

"Novel Colloidal Forming of Ceramics” discusses several new near-net-shape techniques for fabricating highly reliable, high-performance ceramic parts. These techniques combine injection molding and the colloidal forming process. The book not only introduces the basic theoretical development and applications of the colloidal injection molding of ceramics, but also covers tape casting technology, the reliability of the product, and the colloidal injection molding of Si3N4 and SiC, as well as the low-toxicity system. The book is intended for researchers and graduates in materials science and engineering.Dr. Yong Huang and Dr. Jinlong Yang are both professors at the Department of Materials Science and Engineering, Tsinghua University, China.

Author Biography

Mr. Yong Huang and Dr. Jinlong Yang are both professors at the Department of Materials Science and Engineering, Tsinghua University, China.

Aqueous Colloidal Injection Molding of Ceramics Based on Gelation	p. 1
Colloidal Injection Molding	p. 2
The Concept of CIMC	p. 2
The Flowchart of CIMC	p. 3
The Machine of CIMC	p. 4
Pressure Induced Forming	p. 6
Effect of Hydrostatic Pressure on Solidification	p. 6
Homogeneity of the Green Bodies	p. 6
Controlling the Inner Stress in the Green Body	p. 7
Storage Stability of Ceramic Slurries	p. 9
The Importance of Storage Stability of Slurry	p. 9
Chemical Stability	p. 9
Inhibitor for Slurry Storage	p. 11
To Prepare High Reliability Ceramic Parts with Complex Shapes: Aqueous Colloidal Injection Molding	p. 12
References	p. 14
Gel-Tape-Casting of Ceramic Substrates	p. 16
Fundamental Principle and Processing of Aqueous Gel-Tape-Casting	p. 18
Tape Casting Types and the Raw Materials	p. 18
Polymerization of the Monomer	p. 22
Influence Factors on Polymerization of the Monomer	p. 30
Processing of the Gel-Tape-Casting	p. 36
The Characteristics of Slurries Used for Aqueous Gel-Tape-Casting	p. 39
The Properties of the Aqueous Ceramic Slurries with Binder	p. 39
The Influence of Dispersants on Stability and Rheology of Aqueous Ceramic Slurries with Organic Monomer	p. 44
The Influence of Plasticizer on Properties of Aqueous Ceramic Slurry with Organic Monomer	p. 47
The Influence of pH on the Properties of Slurries with Organic Monomer	p. 49
The Effect of Surfactant on Wetting and Green Tape Releasing (Separating)	p. 49
Foam and Pore Elimination	p. 50
Sintering of Green Tape Prepared by Slurry	p. 52
Aqueous Gel-Tape-Casting with Styrene-Acrylic Latex Binder	p. 53
The Importance of Binders in Gel-Tape-Casting Process	p. 53
The Forming Film Mechanism of Latex Binder	p. 55
Rheological Properties of the Alumina Slurries with Binder	p. 57
The Physical Properties and Microstructure of Green Tapes with Latex Binder	p. 57
A Gel-Tape-Casting Process Based on Gelation of Sodium Alginate	p. 59
Why Study on Tape Casting of Sodium Alginate	p. 59
The Preparation of Aqueous Alumina Suspensions with Sodium Alginate and Calcium Phosphere Tribasic	p. 61
Control of the Gelation of Sodium Alginate	p. 63
Characterization of Green Tapes	p. 64
The Spray Trigger Fast-Curing for the Gel-Tape-Casting Process	p. 66
The Idea of the Spray Trigger Fast-Curing	p. 66
Outline of the New Process	p. 66
The Features and Prospects of the Aqueous Tape-Casting	p. 68
References	p. 70
Gelation Forming Process for Low Toxicity System	p. 74
Gelation Forming of Ceramic Suspension with Agarose	p. 75
Characteristics of Agarose	p. 75
The Effect of Agarose Contents on the Rheology of Aqueous Ceramic Suspensions	p. 77
The Forming Courses of the Aqueous Ceramic Suspensions with Agarose	p. 79
Alumina Casting Based on Gelation of Gelatine	p. 83
Characteristics of Gelatine	p. 83
The Gelation Process of the Ceramic Slurry with Gelatine Solution	p. 86
The Preparation of Green Body Using Slurry with Gelatine Solution	p. 88
A Casting Forming for Ceramics by Gelatine and Enzyme Catalysis	p. 90
Research Background	p. 90
The Gelation Mechanism of Gelatine Solution with Urea under Enzyme Catalysis	p. 91
The Rheology and Zeta Potential of Alumina Suspension Containing Gelatine and Urea	p. 93
The Coagulation Forming and Microstructure of Green Body	p. 95
The Alumina Forming Based on Gelation of Sodium Alginate	p. 96
Research Background	p. 96
The Gelation Principle of Sodium Alginate	p. 97
The Preparation Process of Alumina Green Bodies and Samples by Sodium Alginate	p. 100
The Gel-Casting of SiC Based on Gelation of Sodium Alginate	p. 103
Introduction of the Research	p. 103
The Effect of Dispersant on the Colloidal Behaviors of the SiC Suspension	p. 104
The Rheological Property of SiC Suspension	p. 105
The Sedimentation Behavior of the SiC Suspension	p. 107
The Gelation Principle and Process of the Alginate Solution	p. 108
The Gelation of the SiC Suspension with Alginate	p. 108
The Alumina Gel-Casting with a Low-Toxicity System of HEMA	p. 111
The Academic Idea and Research Program	p. 111
The Colloidal Chemistry and Rheological Property	p. 111
The Binder Burnout and Application of the New System	p. 113
The Synergistic Low-Toxicity Gel-Casting System by Using HEMA and PVP	p. 115
The Academic Idea and Research Program	p. 115
Zeta Potentials and Rheological Properties	p. 116
The Activation Energy and Solidification	p. 120
The Green Strengths and Microstrucrures	p. 121
The Exfoliation Elimination Effect and Analysis of the Interaction between PVP and HEMA Molecules	p. 123
References	p. 125
Generation, Development, Inheritance, and Control of the Defects during the Transformation from Suspension to Green Body	p. 129
The Rheological Behaviors of Aqueous Ceramic Suspensions	p. 131
The Rheological Behaviors of Aqueous Alumina Suspensions	p. 132
The Effect of Rheological Properties of Suspension on Mechanical Strength of Ceramics	p. 135
The Effect of Solid Loading on Colloidal Forming	p. 142
The Generation and Development of Defects	p. 147
The Generation Mechanisms of Agglomerations in Ceramic Suspensions	p. 147
The Influences of Idle Time on Microstructures and Mechanical Properties of Green Bodies by Direct Coagulation Casting	p. 154
The Effect of Ionic Conductance on Preparation of Highly Concentrated Suspension	p. 163
The Academic Idea and Research Program	p. 163
The Relationship Between Ion Conductivity Constants and Solid Loading	p. 165
Control of Inner Stress in Green Body	p. 170
Origin, Transformation and Control of Inner Stress in Green Body	p. 170
The Release and Control of Inner Stresses in Ceramic Green Body	p. 175
The Suppression of Surface-Exfoliation with the Addition of Organic Agents	p. 183
The Suppression of Surface-Exfoliation by Introducing PAM into Monomer System in Suspension	p. 183
The Suppression of Surface-Exfoliation by Introducing Polyethylene Glycol into Monomer System in Suspension	p. 190
The Suppression of Surface-Exfoliation by Introducing Poly-vinylpyrrolidone (PVP) into Monomer System in Suspension	p. 198
References	p. 207
The Gel-Casting of Non-Oxide Ceramics	p. 211
The Effects of Powder Surface Modification on Concentrated Suspensions Properties of Si₃N₄	p. 212
The Contributing Factor and Elimination of Macropores in Si₃N₄ Green Bodies	p. 212
The Effect of Foreign Ions on Concentrated Suspension ofSi₃N₄	p. 217
The Effect of Acid Cleaning and Calcinations on the Suspension Properties of Si₃N₄	p. 223
The Effect of Liquid Medium and Surface Group on Dispersibility of Si₃N₄ Powder	p. 232
The Gel-Casting of Si₃N₄ Ceramics	p. 238
The Preparation of Si₃N₄ Ceramics with Surface-Coated Si₃N₄ Powder	p. 238
The Preparation of Si₃N₄ Ceramics with Surface-Oxidized Si₃N₄ Powder	p. 248
The Preparation of Si₃N₄ Ceramics with Combination Processing	p. 253
The Gel-Casting of SiC Ceramic and Si₃N₄ Bonded SiC Ceramic	p. 262
The Gel-Casting of Concentrated Aqueous SiC Ceramic	p. 262
The Gel-Casting of Aqueous Slurry with Si₃N₄ Bonded SiC	p. 268
References	p. 279
Application of New Colloidal Forming	p. 283
Ceramic Microbeads	p. 283
The Forming Principle of Ceramic Microbeads Based on Gel-Casting	p. 283
The Processing of Microbeads	p. 286
The Properties of Ceramic Microbeads	p. 287
Improving the Breakdown Strength of Rutile Capacitor	p. 298
The Influence of Sintering Additives on the Flow Behavior	p. 299
The Calcining of the Rutile Mixture	p. 301
The Rheological Behavior of the Calcined Rutile Mixture	p. 303
The Gel-Casting of the Calcined Rutile Mixture	p. 304
The Thin-Wall Rutile Tube for Ozone Generator with High Dielectric Constant	p. 306
The Experiment Results	p. 306
The Refractory Nozzle of Zirconia	p. 309
The Rehological Behaviors of ZrO₂ Suspensions with Different Dispersants	p. 310
The Sediment Stability of ZrO₂ Suspension with Different Dispersants	p. 312
The Preparation of ZrO₂ Refractory Nozzles	p. 313
Water Based Gel-Casting of PZT	p. 314
The Colloidal Chemistry and Rheological Behavior	p. 316
The Microstructure and Properties	p. 319
References	p. 323
The New Methods and Techniques Based on Gel-Casting	p. 325
Development Overview and Application of SFF	p. 327
Development Overview of SFF	p. 327
Application of SFF	p. 328
Development Overview and Application of Freeze-Gel-Casting	p. 336
The Combination of Gel-Casting and Freeze-Casting Technique	p. 336
Fabrication of Ceramics with Special Porous Structures	p. 338
The Microstructure and Properties of Porous Alumina Ceramics	p. 343
The Mechanical Properties and Applications of Alumina Ceramics with Ultra Low Density	p. 350
The Solidification of Concentrated Si₃N₄ Suspensions for Gelcasting by Ultrasonic Effects	p. 352
Gelcasting by Ultrasonic Effects	p. 352
The Preparation of Concentrated Si₃N₄ Suspensions	p. 354
The Ultrasonic Accelerated Solidification	p. 355
The Comparison between Thermal and Ultrasonic Activated Solidifications	p. 358
Novel Laser Machining Technology for Al₂O₃ Green Ceramic	p. 360
Laser Machining Technology	p. 360
Practical Application of Laser Machining Technology	p. 361
References	p. 368
The Testing and Analyzing Methods Used in Authors' Research	p. 371
The Raw Materials Used in Authors' Research	p. 372
Index of Terms	p. 373
Index of Scholars	p. 377
Postscript	p. 384
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