1 Aqueous Colloidal Injection Molding of Ceramics (CIMC) Based on Gelation 1 11 WhatisColloidalInjectionMolding? 3 111 Colloidal Injection Molding of Ceramics (CIMC) 3 112 TheFlowchartofCIMC 4 113 The Machine of Colloidal Injection Molding ofCeramics 5 12 Pressure-InducedForming 6 121 Effect of Hydrostatic Pressure on Solidication 6 122 HomogeneityoftheGreenBodies 7 123 Controlling the Inner Stress in the Green Body 7 13 StorageStabilityofCeramicSlurries 10 131 The Importance of Storage Stability of Slurry 10 132 ChemicalStability 10 133 InhibitorforSlurryStorage 12 14 To Prepare High Reliability Ceramic Parts with Complex Shapes: Aqueous Colloidal Injection Molding 13 15 Summary 14 References 16 2 Gel Tape Casting of Ceramic Substrates 17 21 Fundamental Principle and Processing of Aqueous GelTapeCasting 19 211 Tape Casting Types and the Raw Materials Used 19 212 PolymerizationoftheMonomer 23 213 Inuence Factors on Polymerization of the Monomer 31 214 ProcessingoftheGelTapeCasting 37 22 Characteristics of Slurries Used for Aqueous GelTapeCasting 40 221 Properties of the Aqueous Ceramic Slurries withBinder 40 222 Inuence of Dispersants on Stability and Rheology of Aqueous Ceramic Slurries with Organic Monomer 45 223 Inuence of Plasticizer on Properties of Aqueous CeramicSlurrywithOrganicMonomer 49 224 Inuence of PH Value on Properties of Slurry withOrganicMonomer 50 225 Effects of Surfactant on Wetting and Green Tape Releasing(Separating) 51 226 FoamandPoreElimination 53 227 Sintering of Green Tape Prepared by Slurry 54 23 Aqueous Gel Tape Casting with Styrene-Acrylic Latex Binder 55 231 The Importance of Binders in Gel Tape Casting Process 55 232 The Forming Film Mechanism of Latex Binder 58 233 Rheological Properties of the Alumina Slurries withBinder 60 234 The Physical Properties and Microstructure of Green Tapes 61 24 A Gel Tape Casting Process Based on Gelation of Sodium Alginate 63 241 Why Study on Tape Casting of Sodium Alginate 63 242 The Preparation of Aqueous Alumina Suspensions with Sodium Alginate and Calcium Phosphere Tribasic 65 243 Control of the Gelation of Sodium Alginate 66 244 CharacterizationofGreenTapes 68 25 Spray Trigger Fast-Curing for Gel Tape Casting Process 70 251 TheIdeaofSprayTriggerFast-Curing 70 252 OutlineoftheNewProcess 70 26 Summary 71 References 75 3 Gelation Forming Process for Toxicity-Free or Low-Toxicity System 79 31 Gelation Forming of Ceramic Suspension with Agarose 80 311 CharacteristicsofAgarose 80 312 The Effect of Agarose Contents on the Rheology ofAqueousCeramicSuspensions 82 313 The Forming Courses of the Aqueous Ceramic SuspensionswithAgarose 84 32 Alumina Casting Based on Gelation of Gelatin 88 321 CharacteristicsofGelatin 88 322 The Gelation Process of the Ceramic Slurry withGelatinSolution 91 323 Preparation of Green Body Using Slurry withGelatinSolution 93 33 A Casting Forming for Ceramics by Gelatin and Enzyme Catalysis 95 331 ResearchBackground 95 332 Gelation Mechanism of Gelatin Solution with Urea UnderEnzymeCatalysis 97 333 Rheology and Zeta Potential of Alumina Suspension ContainingGelatinandUrea 99 334 Coagulation Forming and Microstructure of Green Body 100 34 Alumina Forming Based on Gelation of Sodium Alginate 102 341 ResearchBackground 102 342 Gelation Principle of Sodium Alginate 104 343 Preparation Process of Alumina Green Bodies andSamplesbySodiumAlginate 107 35 Gelcasting of Silicon Carbide Based on Gelation of Sodium Alginate 110 351 ResearchBackground 110 352 Effect of Dispersant on the Colloidal Behavior oftheSiCSuspension 112 353 Rheological Property of SiC Suspension 113 354 Sedimentation Behavior of the SiC Suspension 115 355 Gelation Principle and Process of the Alginate Solution 116 356 Gelation of the SiC Suspension with Alginate 116 36 Alumina Gelcasting with a Low-Toxicity System of HEMA 119 361 AcademicIdeaandResearchProgram 119 362 Colloidal Chemistry and Rheological Property 120 363 Binder Burnout and Application of the New System 122 37 A Synergistic Low-Toxicity Gelcasting System by Using HEMAandPVP 124 371 AcademicIdeaandResearchProgram 124 372 f Potentials and Rheological Properties 125 373 Activation Energies and Solidication 128 374 Green Strengths and Microstructures 129 375 Exfoliation Elimination Effect and Analysis of the Interaction Between PVP and HEMA Molecules 131 References 134 4 Generation, Development, Inheritance, and Control of the Defects in the Transformation from Suspension to Solid 139 41 Rheological Behaviors of Aqueous Ceramic Suspensions 141 411 Rheological Behaviors of Aqueous Alumina Suspensions 142 412 Effect of Rheological Properties of Suspension onMechanicalStrengthofCeramics 145 413 Effects of Solid Volume Fraction on Colloidal Forming 153 42 GenerationandDevelopmentofDefects 158 421 Generation Mechanisms of Agglomerations inCeramicSuspensions 158 422 Inuences of Idle Time on Microstructures and Mechanical Properties of Green Bodies byDirectCoagulationCasting 165 43 Effect of Ionic Conductance on Preparation of Highly ConcentratedSuspension 174 431 AcademicIdeaandResearchProgram 174 432 The Relationship Between Ion Conductivity ConstantsandSolidsVolumeLoading 176 44 ControlofInnerStressinGreenBody 181 441 Origin, Transformation and Control of Inner Stress inGreenBody 181 442 Release and Control of Inner Stresses in Ceramic GreenBody 187 45 Suppression of Surface Exfoliation with the Addition ofOrganicAgents 195 451 Suppression of Surface Exfoliation by Introducing Polyacrylamide (PAM) into a Monomer System inSuspension 195 452 Suppression of Surface Exfoliation by Introducing Polyethylene Glycol (PEG) into Monomer System inSuspension 203 References 221 5 Gelcasting of Non-oxide Ceramics 225 51 Effects of Powder Surface Modication on Concentrated SuspensionPropertiesofSiliconNitride 226 511 Contributing Factor and Elimination of Macropores inSiliconNitrideGreenBodies 226 512 Effect of Foreign Ions on Concentrated Suspension ofSiliconNitride 232 513 Effects of Acid Cleaning and Calcinations on the Suspension Properties of Silicon Nitride 238 514 Effects of Liquid Medium and Surface Group on Dispersibility of Silicon Nitride Powder 249 52 GelcastingofSiliconNitrideCeramics 255 521 Preparation of Silicon Nitride Ceramics with Surface-Coated Silicon Nitride Powder 255 522 Preparation of Silicon Nitride Ceramics with Surface-Oxidized Silicon Nitride Powder 267 523 Preparation of Silicon Nitride Ceramics Using CombinationProcessing 276 53 Gelcasting of Silicon Carbide Ceramic and Silicon Nitride-BondedSiliconCarbideCeramic 287 531 Gelcasting of Concentrated Aqueous Silicon Carbide Ceramic 287 532 Gelcasting of Aqueous Slurry with Silicon Nitride-BondedSiliconCarbide 294 References 306 6 Applications of New Colloidal-Forming Processes 311 61 CeramicMicrobeads 311 611 The Forming Principle of Ceramic Microbeads BasedonGelcasting 311 612 TheProcessofPreparingMicrobeads 314 613 The Properties of Ceramic Microbeads 314 614 Summary 328 62 Improving the Breakdown Strength of the Rutile Capacitor 329 621 The Inuence of Sintering Additives on the Flow Behavior 331 622 CalciningoftheRutileMixture 333 623 The Rheological Behavior of the Calcined Rutile Mixture 334 624 Gelcasting of the Calcined Rutile Mixture 335 625 Summary 336 63 Thin-Wall Rutile Tube for Ozone Generator with High DielectricConstant 338 631 ResultsandDiscussions 339 632 Summary 341 64 RefractoryNozzleofZirconia 342 641 Rheological Behaviors of Zirconia Suspensions withDifferentDispersants 343 642 Sediment Stability of Zirconia Suspension withDifferentDispersants 345 643 Preparation of Zirconia Refractory Nozzles 346 644 Summary 346 65 Water-Based Gelcasting of Lead Zirconate Titanate 348 651 Colloidal Chemistry and Rheological Behavior 350 652 MicrostructureandProperties 354 653 Summary 357 References 357 7 New Methods and Techniques Based on Gelation 359 71 Development Overview and Application of Solid Freeform Fabrication 361 711 Development Overview of Solid Freeform Fabrication 361 712 Application of Solid Freeform Fabrication 362 72 Development Overview and Application of Freeze-Gelcasting 371 721 The Combination of Gelcasting and Freeze-Casting Technique 371 722 Fabrication of Ceramics with Special Porous Structures 372 723 Microstructure and Properties of Porous Alumina Ceramics 378 724 Mechanical Properties and Applications of Alumina CeramicswithUltra-LowDensity 382 73 Solidication of Concentrated Silicon Nitride Suspensions forGelcastingbyUltrasonicEffects 387 731 The Forming Method of Gelcasting Using Ultrasonic Effects 387 732 Preparation of Concentrated Silicon Nitride Suspensions 388 733 Ultrasonic Accelerated Solidication 389 734 Comparison of Thermal-and Ultrasonic-Activated Solidications 392 74 Novel Laser Machining Technology for Alumina Green Ceramic 394 741 LaserMachiningTechnology 394 742 Practical Application of Laser Machining Technology 395 References 402 8 Novel In-situ Coagulation Casting of Ceramic Suspensions 405 81 Direct Coagulation Casting of Ceramic Suspension byHighValenceCounter-Ions 407 811 Direct Coagulation Casting by Using Calcium Iodate asCoagulatingAgent 407 812 Direct Coagulation Casting by Using Calcium PhosphateasCoagulatingAgent 423 813 Direct Coagulation Casting by Using Thermo-Sensitive LiposomesasCoagulatingAgent 432 814 Direct Coagulation Casting from Citrate Assisted bypHShift 442 815 Direct Coagulation Casting via High Valence Counter-Ions from Chelation Reaction 474 82 Dispersion Removal Coagulation Casting 501 821 DispersantReactionMethod 501 83 DispersantHydrolysisMethod 521 84 DispersantSeparationMethod 532 References 541 Appendix A: The Testing, Analyzing and Sintering Methods Used in Authors’ Research 549 Appendix B: The Raw Materials Used in Authors’ Research 551 Index of Scholars 553 Index of Terms 561 Postscript 567