Ebook: Progress in Nitrogen Ceramics

The first NATO Advanced Study Institute on Nitrogen Ceramics held in 1976 at Canterbury came at a particularly significant moment in the development of this subject. The five-year period, 1971-75, had been an especially fruitful one in very many respects for work in the areas of covalent materials in general, and of the nitrides in particular. The Institute was therefore able to cap­ ture fully the spirit of excitement and adventure engendered by the outputs of numerous national research programmes, as well as those of many smaller research groups, concerning ceramics potent­ ially suitable for applications in a high temperature engineering context. It reflected accurately the state of knowledge with respect to the basic science, the powder technology, and the prop­ erties of materials based on silicon nitride and associated syst­ ems. The Proceedings of the Institute thus provided a good record for workers already in the field, and a useful textbook for new­ comers to the subject of nitrogen ceramics. The Canterbury Advanced Study Institute had a valuable educ­ ational and social function in bringing together for two weeks a large proportion of those workers most closely involved at that time with the nitrogen ceramics. The atmosphere of this meeting, providing both intensive discussions and informal contacts, made a lasting impression on the participants, and inevitably the question was raised of whether, and when, a second Advanced Study Institute might be held on this subject.

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Content:
Front Matter....Pages I-XX
Front Matter....Pages 1-1
Nitrogen Ceramics 1976–1981....Pages 3-20
Front Matter....Pages 21-21
Silicate Structures and Atomic Substitution....Pages 23-43
The Characterization of ?’ - Sialons and the ? - ? Relationships in Sialons and Silicon Nitrides....Pages 45-60
The Structural Characterisation of Sialon Polytypoids....Pages 61-74
Front Matter....Pages 75-75
Phase Equilibrium Studies in Si3N4 — Metal Oxides Systems....Pages 77-87
Solid-Liquid Reactions in Part of the System Si, Al, Y/N, O....Pages 89-99
High Temperature Reactions and Microstructures in the Al2O3-AlN System....Pages 101-110
Front Matter....Pages 111-118
Silicon Nitridation....Pages 119-119
The Effect of Silicon Particle Size on the Nitriding Behaviour of Reaction Bonded Si3N4 Compacts....Pages 121-133
An Experimental Plan for the Nitridation of Si+Al Compacts....Pages 135-140
Preparation of Silicon Nitride Powder from Silica....Pages 141-148
On the Preparation of Fine Silicon Nitride Powders....Pages 149-156
Front Matter....Pages 157-166
Liquid Phase Sintering....Pages 167-167
Sintering of Silicon Nitride, a Review....Pages 169-186
Influence of Powder Properties and Processing Parameters on the Sintering of Silicon Nitride....Pages 187-210
Sintering of Si3N4-Based Materials Using the Powder Bed Technique....Pages 211-218
Densification and Transformation Mechanisms in Nitrogen Ceramics....Pages 219-224
Sintering of Reaction Bonded Silicon Nitride....Pages 225-230
Microstructure of Densified Reaction Bonded Silicon Nitride....Pages 231-236
Front Matter....Pages 237-243
Sintering of Aluminium Nitride with Low Oxide Addition....Pages 167-167
Stress Assisted Hot Formation of Ceramics....Pages 245-252
Influence of Composition and Process Selection on Densification of Silicon Nitride....Pages 253-272
Hot Pressing of Aluminium Nitride....Pages 273-282
Front Matter....Pages 283-292
Structure-Property Relationships of the Vitreous State....Pages 293-299
The Preparation and Properties of Oxynitride Glasses....Pages 301-301
The Crystallization Behaviour of a Mg-Si-O-N Glass....Pages 303-321
Thermodynamics of Grain-Boundary Glass Crystallization....Pages 323-330
Front Matter....Pages 331-336
The Microstructure of Nitrogen Ceramics....Pages 337-337
Evaluation of Microstructure in ?’SiAlON Materials by TEM Methods and its Correlation to Some Properties....Pages 339-339
Sialon X-Phase....Pages 341-358
Microstructure Development in Silicon Nitride....Pages 359-374
Contribution of the Strength-Porosity Relationship of Reaction Bonded Silicon Nitride....Pages 375-380
Front Matter....Pages 381-392
The Kinetics of Gas-Solid Reactions and Environmental Degradation of Nitrogen Ceramics....Pages 393-399
Thermodynamic Mechanism for Cation Diffusion Through an Intergranular Phase: Application to Environmental Reactions with Nitrogen Ceramics....Pages 401-401
Oxidation Kinetics of Hot-Pressed Silicon Nitride....Pages 403-419
Oxidation Behaviour of ?’-Sialons in Oxygen and Carbon Dioxide....Pages 421-426
Metallic Infiltration of Reaction Bonded Silicon Nitride....Pages 427-438
Brazing of Silicon Nitride....Pages 439-446
Front Matter....Pages 447-453
High Temperature Deformation and Fracture Phenomena of Polyphase Si3N4 Materials....Pages 455-464
Time-Temperature Effects in Nitride and Carbide Ceramics....Pages 465-465
High Temperature Fatigue Failure in Pressureless Sinterd Silicon Nitride....Pages 467-490
Effect of Deformation on the Fracture of Si3N4 and Sialon....Pages 491-500
Cyclic Fatigue behavior of Ceramics....Pages 501-506
The Fracture Behaviour of Hot-Pressed Silicon Nitride between Room Temperature and 1400°C....Pages 507-514
Parameter Studies on the Oxidation and the Strength Behaviour of Silicon Nitride....Pages 515-522
Characterization, Oxidation and Mechanical Behaviour of Reaction Bonded Silicon Nitride....Pages 523-528
Creep and Internal Oxidation of Reaction Bonded Silicon Nitride....Pages 529-538
Influence of Corrosion and Microstructure on Mechanical Properties of SiYON Ceramics....Pages 539-546
Thermal Properties and Thermal Shock Resistance of Silicon Nitride....Pages 547-555
Thermal Shock Resistance of Two Nitrogen Ceramics....Pages 557-564
Non-Destructive Failure Prediction in Ceramics....Pages 565-588
Non-Destructive Evaluation of Ceramic Gas Turbine Components by X-Rays and Other Methods....Pages 589-594
Surface Damage in Ceramics: Implications for Strength Degradation, Erosion and Wear....Pages 595-625
Contact Stresses at Ceramic Interfaces....Pages 627-634
Front Matter....Pages 635-656
Sintering, Properties and Fabrication of Si3N4 + Y2O3 Based Ceramics....Pages 657-666
Lucas Syalons: Composition, Structure, Properties and Uses....Pages 667-667
The Nature of SiC for Use in Heat Engines as Compared to Si3N4: an Overview of Property Differences....Pages 669-682
Fabrication of Complex Shaped Ceramic Articles by Slip Casting and Injection Molding....Pages 683-694
Front Matter....Pages 695-710
Hot Isostatic Pressing of Ceramics....Pages 711-715
Front Matter....Pages 667-667
US National Programs in Ceramics for Energy Conversion....Pages 717-724
Status Report 1981 on the German BMFT-Sponsored Programme “Ceramic Components for Vehicular Gas Turbines”....Pages 725-725
Nitrogen Ceramics in France....Pages 727-735
Current Japanese Research Programmes into Nitrogen Ceramics....Pages 737-751
Front Matter....Pages 753-754
Concluding Remarks....Pages 755-768
Back Matter....Pages 769-769
....Pages 771-774