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
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