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Author: Derek Scott King Publisher: ISBN: Category : Ceramic materials Languages : en Pages : 214
Book Description
"The microstructure, hardness, fracture toughness, Young's modulus, strength and Weibull modulus of silicon carbide-titanium diboride (SiC-TiB2) ceramics were studied. First, SiC-TiB2 ceramics with 15 vol.% TiB2 particles were processed using two green processing methods, spray drying (ST) and ball milling (SiC-15TiB2). In addition, SiC-TiB2 ceramics with TiB2 contents ranging from 0 to 100 vol.% were produced to determine a TiB2 content that produced the best combination of mechanical properties. From spray drying, segregation of the TiB2 particles in ST led to a granule-like microstructure and spontaneous microcracking in the final ceramic. In ceramics containing 20 and 40 vol.% TiB2, the TiB2 particle sizes were also large enough to allow for spontaneous microcracking. Spontaneous microcracking decreased the hardness from 28 GPa for SiC to 24 GPa for SiC-TiB2 with TiB2 contents of 80 vol.% or higher. In contrast, fracture toughness increased from 2 MPa·m1/2 for SiC to ~6 MPa·m[superscript 1/2] for SiC containing 40 vol.% TiB2 or more. Using a two-parameter Weibull analysis, SiC with 20 vol.% TiB2 had the highest average strength (522 MPa), followed by SiC-15TiB2 (500 MPa), then SiC with 40 vol.% TiB2 (420 MPa), and ST (380 MPa). While microcracking in ST lowered the strength, hardness, and elastic modulus compared to SiC-15TiB2, the granule-like microstructure combined with microcracking, narrowed the flaw size distribution of ST and boosted the Weibull modulus of ST to 21 compared to 12 for SiC-15TiB2, which had a uniform distribution of TiB2 particles. The Weibull moduli of SiC containing 20 and 40 vol.% TiB2 was also boosted to 17, compared to 12 for a TiB2 content of 15 vol.%. To maximize each property, TiB2 particle sizes should be kept just below the spontaneous microcracking threshold to prevent spontaneous flaw formation"--Abstract, leaf iv.
Author: Derek Scott King Publisher: ISBN: Category : Ceramic materials Languages : en Pages : 214
Book Description
"The microstructure, hardness, fracture toughness, Young's modulus, strength and Weibull modulus of silicon carbide-titanium diboride (SiC-TiB2) ceramics were studied. First, SiC-TiB2 ceramics with 15 vol.% TiB2 particles were processed using two green processing methods, spray drying (ST) and ball milling (SiC-15TiB2). In addition, SiC-TiB2 ceramics with TiB2 contents ranging from 0 to 100 vol.% were produced to determine a TiB2 content that produced the best combination of mechanical properties. From spray drying, segregation of the TiB2 particles in ST led to a granule-like microstructure and spontaneous microcracking in the final ceramic. In ceramics containing 20 and 40 vol.% TiB2, the TiB2 particle sizes were also large enough to allow for spontaneous microcracking. Spontaneous microcracking decreased the hardness from 28 GPa for SiC to 24 GPa for SiC-TiB2 with TiB2 contents of 80 vol.% or higher. In contrast, fracture toughness increased from 2 MPa·m1/2 for SiC to ~6 MPa·m[superscript 1/2] for SiC containing 40 vol.% TiB2 or more. Using a two-parameter Weibull analysis, SiC with 20 vol.% TiB2 had the highest average strength (522 MPa), followed by SiC-15TiB2 (500 MPa), then SiC with 40 vol.% TiB2 (420 MPa), and ST (380 MPa). While microcracking in ST lowered the strength, hardness, and elastic modulus compared to SiC-15TiB2, the granule-like microstructure combined with microcracking, narrowed the flaw size distribution of ST and boosted the Weibull modulus of ST to 21 compared to 12 for SiC-15TiB2, which had a uniform distribution of TiB2 particles. The Weibull moduli of SiC containing 20 and 40 vol.% TiB2 was also boosted to 17, compared to 12 for a TiB2 content of 15 vol.%. To maximize each property, TiB2 particle sizes should be kept just below the spontaneous microcracking threshold to prevent spontaneous flaw formation"--Abstract, leaf iv.
Author: Jonathan Salem Publisher: John Wiley & Sons ISBN: 9780470456354 Category : Technology & Engineering Languages : en Pages : 187
Book Description
This book provides a one-stop resource with current research on advanced ceramics. It is a collection of papers from The American Ceramic Society s 32nd International Conference on Advanced Ceramics and Composites, January 27-February 1, 2008. Topics include Processing-Microstructure-Mechanical Properties Correlations; Mechanical Performance of Ternary Compounds; Mechanical Performance of Ultra-High Temperature Ceramics; and more. Articles are logically organized to provide insight into various aspects of ceramic materials and advanced ceramics. This is a valuable, up-to-date resource for researchers working in ceramics engineering.
Author: Dileep Singh Publisher: John Wiley & Sons ISBN: 1118530357 Category : Technology & Engineering Languages : en Pages : 342
Book Description
This collection of 33 papers deals with mechanical behaviors associated with systems ranging from diamond reinforced silicon carbide to rare earth pyrosilicates. Presented at The Mechanical Behavior and Performance of Ceramics & Composites Symposium in January 2012 during the 36th International Conference on Advanced Ceramics and Composites (ICACC), it offers researchers from around the world the opportunity to explore new and emerging issues in all aspects of the field.
Author: S.T. Mileiko Publisher: Elsevier ISBN: 0080536301 Category : Technology & Engineering Languages : en Pages : 705
Book Description
Modern scientific and technological fields are frequently of an interdisciplinary nature, and the field of fibrous composites is no exception. Unlike fibre-reinforced plastics, the family of metal- and ceramic-based composites is still quite a new group of materials with a large variety of mechanical and physical properties. Up until now it has been difficult to produce these materials as the necessary technical information has not been well documented. The main purpose of this book is to link together fabrication, structure and properties chains, so as to clarify which structure provides the necessary properties, and how one can attain the correct composite structure. To this end, the book not only contains topics of a purely technical nature, but also a description of the failure mechanics of metal- and ceramic-matrix composites, as this is the key to understanding the structure-properties segment of the chain mentioned. The book is divided into three parts. Part I presents a general view of composites with the accent on metal- and ceramic-matrix composites. It also contains a brief description of modern fibres and composites and can be considered, at least for beginners, as a starting point for further study. Part II looks at the composite microstructures considered to be either optimal or reasonable in resisting a particular loading. Finally Part II describes a variety of mechanical, physical, and chemical potential for organizing these microstructures. Experimental data on technologies, material structures, and material properties are used throughout the book to support theoretical conclusions or to obtain important physical parameters.
Author: Edgar Lara-Curzio Publisher: John Wiley & Sons ISBN: 0470196335 Category : Technology & Engineering Languages : en Pages : 532
Book Description
Papers from The American Ceramic Society's 31st International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 21-26, 2007. Content includes fundamental links among processing, microstructure, properties and performance of ceramics and composites, and how these change as a function of time, temperature and environment. Reviews progress on ternary compounds, ultra-high temperature ceramics, innovative processing techniques to achieve multifunctional properties and materials for power generation and nuclear energy applications.
Author: Walter Krenkel Publisher: Wiley-VCH ISBN: Category : Science Languages : en Pages : 1044
Book Description
The extreme high temperature stability and damage tolerance of materials and components required for space, terrestrial, energetic and many other applications can only be achieved by ceramic materials. All over the world research is going on to develop ceramics with quasiductile behaviour. The materials with the highest potential for high temperature applications are fibre reinforced ceramic matrix composites (CMC). The international conference HT-CMC 4 in Munich will continue the tradition of its successful predecessor meetings held in Bordeaux (France, 1993), Santa Barbara (USA, 1995) and Osaka (Japan, 1998). This conference series has been recognized as the central meeting event in high temperature CMC science and technology and demonstrates the great interest in research and development on reinforced ceramics. The Proceedings of this conference will therefore be a valuable reference for every materials scientist or engineer involved in this field of high-tech materials development.
Author: Narottam P. Bansal Publisher: John Wiley & Sons ISBN: 0470930942 Category : Technology & Engineering Languages : en Pages : 322
Book Description
Three international symposia “Innovative Processing and Synthesis of Ceramics, Glasses and Composites”, “Ceramic Matrix Composites”, and “Microwave Processing of Ceramics” were held during Materials Science & Technology 2009 Conference & Exhibition (MS&T’09), Pittsburgh, PA, October 25-29, 2009. These symposia provided an international forum for scientists, engineers, and technologists to discuss and exchange state-of-the-art ideas, information, and technology on advanced methods and approaches for processing, synthesis and characterization of ceramics, glasses, and composites. A total of 83 papers, including 20 invited talks, were presented in the form of oral and poster presentations. Authors from 19 countries (Austria, Belarus, Brazil, Bulgaria, Canada, China, Egypt, France, Germany, India, Iran, Italy, Japan, Russia, South Korea, Taiwan, Turkey, U.K., and the United States) participated. The speakers represented universities, industries, and government research laboratories.
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Research on non-oxide structure ceramics including silicon nitride, silicon carbide and titanium diboride has been conducted Multiphase silicon nitride composites with melilite and other high nitrogen content grain boundary phases have been prepared. These composites can be sintered to high density and they show improved oxidation resistance. Mechanical properties have been evaluated and found to compare favorably with other silicon nitride materials. Phase relations have also been delineated for various rare-earth containing silicon nitride systems. An in-situ toughened alpha silicon nitride solid solution with a microstructure of elongated grains has been discovered. Compared with conventional silicon nitride, this material has a comparable strength and toughness but has 40% higher hardness. Phase relations of selected rare-earth containing alpha silicon nitride solid solutions have also been delineated. Composites of silicon carbide and titanium diboride have been prepared which also show a microstructure of elongated grains. These materials have improved strength and toughness compared to monolithic silicon carbide. In addition, the electrical conductivity has been improved by the addition of titanium diboride.
Author: Dileep Singh Publisher: John Wiley & Sons ISBN: 1118059875 Category : Technology & Engineering Languages : en Pages : 320
Book Description
This book is a collection of papers from The American Ceramic Society's 35th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 23-28, 2011. This issue includes papers presented in the Mechanical Behavior and Performance of Ceramics & Composites Symposium on topics such as processing-microstructure properties correlations; fracture mechanics, modeling and testing; tribological properties; applications; and processing.
Author: Edgar Lara-Curzio Publisher: John Wiley & Sons ISBN: 0470291613 Category : Technology & Engineering Languages : en Pages : 427
Book Description
Over 45 papers included in this collection present the latest advances in research and development on the processing, mechanics and mechanical properties of advanced ceramics and composites. The focus is on the underlying fundamental linkages between microstructure and properties, and the ability to achieve desired properties through innovative processing techniques including design, modeling, evaluation and life-prediction of structural components, ceramics and composites.
Author: Derek Scott King
Author: Derek Scott King
Author: Jonathan Salem
Author: Dileep Singh
Author: S.T. Mileiko
Author: Edgar Lara-Curzio
Author: Walter Krenkel
Author: Narottam P. Bansal
Author: 
Author: Dileep Singh
Author: Edgar Lara-Curzio