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Precursor-Derived Ceramics by Joachim Bill,Fumihiro Wakai,Fritz Aldinger Pdf
The production of high-purity ceramic materials from low-molecular weight, inorganic or organoelement precursors is a topic of increasing relevance within materials science. With this emerging technology it is possible to precisely tailor the properties of the ceramic material which enables new high-temperature or electronic applications. Every materials scientist and engineer involved in the research and development of new high-performance ceramic materials will find these results - presented at a recent workshop of the Max-Planck-Gesellschaft - of great importance for his own work.
This book presents the foundations of the science of polymer derived ceramics, enriched with many descriptions of applications. Written by a team of selected researchers, the text is a systematic, comprehensive introduction to all phases of polymer derived ceramics from synthesis strategies through properties measurement, and applications. New material is given on the nanolevel structure of PDCs, and it is shown how nano-sized modifications can alter and improve the properties of polymer derived ceramics, including high chemical durability, oxidation resistance, luminescence, and piezo-resistivity. Groundbreaking work is also described on novel precursors such as stoichiometric SiC, BN, and SiBCN ceramics. In terms of technology, this volume explains how PDCs are fabricated and how these novel materials are used in membranes, filters, MEMS, fibers, and micro-components. This book covers: synthesis, structure, properties and applications; strategies for characterizing and synthesizing PDCs; and, original research on pre-ceramic PDC precursors.
Handbook of Advanced Ceramics and Composites by Yashwant Mahajan,Johnson Roy Pdf
This handbook presents an authoritative account of the potential of advanced ceramics and composites in strategic applications, including defense, national security, aerospace, and energy security (especially nuclear energy). It highlights how their unique combination of superior properties such as low density, high strength, high elastic modulus, high hardness, high temperature capability, and excellent chemical and environmental stability are optimized in technologies within these fields. The handbook is organized according to application type. It allows readers to learn about strategies that have been used in different fields and to transfer them to their own. The book addresses a wide variety of ceramics and their composites, including PZT ceramics, carbon nanotubes, aerogels, silica radomes, relaxor ferroelectrics, and many others.
Advances in Polymer Derived Ceramics and Composites by Paolo Colombo,Rishi Raj Pdf
This book collects some of papers presented at the very successful Symposium "Polymer Derived Ceramics and Composites" in the framework of the 8th Pacific Rim Conference on Ceramic and Glass Technology. There, over 70 researchers from around the world discussed their latest innovations over four full days. It covers all the main aspects of interdisciplinary research and development in the field of Polymer-Derived-Ceramics, from the precursor synthesis and characteristics to the polymer-to-ceramic conversion, from processing and shaping of preceramic polymers into ceramic components to their microstructure at the nano- and micro-scale, from their properties to their most relevant applications in different fields.
Design, Processing, and Properties of Ceramic Materials from Preceramic Precursors by Samuel Bernard Pdf
Many important industrial objectives require the development of ceramics with specific properties. It is now established that the development of ceramics demands the control of their composition at the atomic scale, as well as the nanostructuration of the materials. A nanostructural design, a control of their composition and shapes and therefore a systematic optimisation of their properties, are beyond the possibilities of the traditional high-temperature synthesis methods via solid-state reactions. This book examines the concept known as the Precursor-Derived Ceramics (PDCs) route, which offers new preparation opportunities in chemistry and ceramic sciences and plays a major role in the preparation of ceramics endowed with properties that reach far beyond those of existing materials.
Ceramic Nanocomposites by Rajat Banerjee,Indranil Manna Pdf
Ceramic nanocomposites have been found to have improved hardness, strength, toughness and creep resistance compared to conventional ceramic matrix composites. Ceramic nanocomposites reviews the structure and properties of these nanocomposites as well as manufacturing and applications.Part one looks at the properties of different ceramic nanocomposites, including thermal shock resistance, flame retardancy, magnetic and optical properties as well as failure mechanisms. Part two deals with the different types of ceramic nanocomposites, including the use of ceramic particles in metal matrix composites, carbon nanotube-reinforced glass-ceramic matrix composites, high temperature superconducting ceramic nanocomposites and ceramic particle nanofluids. Part three details the processing of nanocomposites, including the mechanochemical synthesis of metallic–ceramic composite powders, sintering of ultrafine and nanosized ceramic and metallic particles and the surface treatment of carbon nanotubes using plasma technology. Part four explores the applications of ceramic nanocomposites in such areas as energy production and the biomedical field.With its distinguished editors and international team of expert contributors, Ceramic nanocomposites is a technical guide for professionals requiring knowledge of ceramic nanocomposites, and will also offer a deeper understanding of the subject for researchers and engineers within any field dealing with these materials. Reviews the structure and properties of ceramic nanocomposites as well as their manufacturing and applications Examines properties of different ceramic nanocomposites, as well as failure mechanisms Details the processing of nanocomposites and explores the applications of ceramic nanocomposites in areas such as energy production and the biomedical field
Committee on Advanced Fibers for High-Temperature Ceramic Composites,Commission on Engineering and Technical Systems,National Materials Advisory Board,Division on Engineering and Physical Sciences,National Research Council
Author : Committee on Advanced Fibers for High-Temperature Ceramic Composites,Commission on Engineering and Technical Systems,National Materials Advisory Board,Division on Engineering and Physical Sciences,National Research Council Publisher : National Academies Press Page : 112 pages File Size : 53,6 Mb Release : 1998-05-05 Category : Technology & Engineering ISBN : 9780309569033
Ceramic Fibers and Coatings by Committee on Advanced Fibers for High-Temperature Ceramic Composites,Commission on Engineering and Technical Systems,National Materials Advisory Board,Division on Engineering and Physical Sciences,National Research Council Pdf
High-temperature ceramic fibers are the key components of ceramic matrix composites (CMCs). Ceramic fiber properties (strength, temperature and creep resistance, for example)-along with the debonding characteristics of their coatings-determine the properties of CMCs. This report outlines the state of the art in high-temperature ceramic fibers and coatings, assesses fibers and coatings in terms of future needs, and recommends promising avenues of research. CMCs are also discussed in this report to provide a context for discussing high-temperature ceramic fibers and coatings.
High Performance Non-Oxide Ceramics I by M. Jansen Pdf
The nitrides and carbides of boron and silicon are proving to be an excellent choice when selecting materials for the design of devices that are to be employed under particularly demanding environmental and thermal con- tions. The high degree of cross-linking, due to the preferred coordination numbers of the predominantly covalently bonded constituents equalling or exceeding three, lends these non-oxidic ceramics a high kinetic stability, and is regarded as the microscopic origin of their impressive thermal and mechanical durability. Thus it does not come as a surprise that the chemistry, the physical properties and the engineering of the corresponding binary, ternary, and even quaternary compounds have been the subject of intensive and sustained efforts in research and development. In the five reviews presented in the volumes 101 and 102 of "Structure and Bonding" an attempt has been made to cover both the essential and the most recent advances achieved in this particular field of materials research. The scope of the individual contributions is such as to address both graduate students, specializing in ceramic materials, and all scientists in academia or industry dealing with materials research and development. Each review provides, in its introductory part, the chemical, physical and, to some extent, historical background of the respective material, and then focuses on the most relevant and the most recent achievements.
Sustainable Biopolymer Composites by Deepak Verma,Mohit Sharma,Kheng-Lim Goh,Siddharth Jain,Himani Sharma Pdf
Sustainable Biopolymer Composites: Biocompatibility, Self-healing, Modeling, Repair and Recyclability focuses on sustainable polymer composites also referred to as bio- composites. Vital aspects such as biodegradability, biocompatibility, repair and recyclability are discussed in detail. In addition, complexities like rapid and scalable processing, onsite repair, and minimal environmental effects are also covered along with the appropriateness of advanced polymer composites for structural applications in automotive, aviation and marine industries. This book will be an indispensable resource for scientists, engineers, physicists and chemists who are interested in the preparation, applications and repair analysis of bio-based composites and nano-composites for different types of applications. The composites repair process is extremely complex, hence it is essential to have a comprehensive understanding of damage mechanisms to apply the most suitable repair technique. Damage assessment using onsite inspection, e.g., NDT, THz techniques and the automated repair process for reliability and repeatability, are vital parameters when executing bonded composite repair. Furthermore, overall integrity and structural health monitoring of composites repair is also necessary. Features detailed information on damage detection, failure analysis and repair of advanced bio-polymer composites Emphasizes biocompatibility, degradation and recyclability of these materials Features key chapters on molecular dynamics, multi-scale modeling and self-healing Presents a roadmap for materials selection, processing and industrial utilization for a broad range of applications
High Temperature Corrosion and Materials Chemistry IV by Elizabeth J. Opila Pdf
" ... papers presented at the Fourth International Symposium on High Temperature Corrosion and Materials Chemistry, held at the 203rd meeting of the Electrochemical Society, Inc., in Paris, France, April 30- May 2, 2003"--Preface.
MAX Phases and Ultra-High Temperature Ceramics for Extreme Environments by Low, I. M. Pdf
Ceramics are a versatile material, more so than is widely known. They are thermal resistant, poor electrical conductors, insulators against nuclear radiation, and not easily damaged, making ceramics a key component in many industrial processes. MAX Phases and Ultra-High Temperature Ceramics for Extreme Environments investigates a new class of ultra-durable ceramic materials, which exhibit characteristics of both ceramics and metals. Readers will explore recent advances in the manufacturing of ceramic materials that improve their durability and other physical properties, enhancing their overall usability and cost-effectiveness. This book will be of primary use to researchers, academics, and practitioners in chemical, mechanical, and electrical engineering. This book is part of the Research Essentials collection.
Additive Manufacturing of Polymer-Derived Ceramics by Shruti Gupta Pdf
This dissertation describes the stereolithography-based additive manufacturing of ceramic matrix composites starting from preceramic polymers. Preceramic polymer route to produce high performance silicon carbide based ceramic matrix composites has been explored with various techniques to produce parts with high strengths. This route makes polymer processing amenable to ceramics. Ceramic matrix composites (CMCs), especially those based on SiC or SiOC, possess low weight and exhibit superior high temperature properties. It is possible to attain a higher degree of synthetic control over the microstructure and properties due to the tailorable polymer precursor chemistry and processing. Polymer-derived ceramics (PDCs) produced upon pyrolysis are mostly amorphous solids often containing a large amount of free carbon. However, the main issue with producing such ceramics is the inherent density increase from the preceramic polymer (1 g/cc) to 3.21 g/cc of the SiC ceramic. This results in a tremendous amount of shrinkage during the polymer to ceramic transformation causing cracks and pore formation in the ceramic matrix. The mechanical strength of PDCs suffers from these cracks, pores and microstructure inhomogeneities. Despite its benefits, the SLA process faces the challenge of producing PDCs with high strengths. The goal of this dissertation is to identify techniques to combat defects in SLA printed ceramics and increase their mechanical strength. This dissertation details exploratory work in identifying 3 main materials and processing pathways to predict and resolve such shrinkage-related microstructural defects in the PDCs. Firstly, if the shrinkage in the preceramic polymer matrix governs the pore and crack formation, it is vital to determine how the mechanical properties of these SLA printed green bodies affect the strength of the PDC formed upon pyrolysis. Therefore, the first study was based on comparing the mechanical properties of the printed green bodies of the preceramic resins to those of the pyrolyzed ceramics. Properties of the printed preceramic polymer such as the modulus and strain-at-break played an important role in determining the failure in the PDCs. These properties can be modulated by choosing an appropriate crosslinking chemistry Such comparative studies between these properties of the green bodies and the ceramic microstructure have not been conducted in the past. This work identifies strain-at-break as a new parameter to be considered to predict the amount of shrinkage sustained by the matrix without cracking. By eliminating cracks, higher strengths can be achieved. The compressive strengths of the lattices produced in this work were comparable to the highest reported values in the literature. Secondly, if inert fillers such as ceramic particles are added to the preceramic resin as second phase heterogeneities, then the overall density of the PDC will increase and the shrinkage will be reduced as shrinkage will not occur in the volume occupied by the inert fillers. In the next part of this dissertation, the effect of silicon nitride inert fillers in the PDC matrix on the strength of the composite PDCs was studied. It was observed that not only the amount of particle loading, but also the particle size affected the strengths of such ceramic composites. Besides, preliminary studies on polymer infiltration and pyrolysis (PIP) of ceramics produced with high solids loading were carried out. This process generated flexural strengths of 197 MPa, higher than other techniques reported in this work. A combination of SLA printing and PIP showed promise in future development of high strength industrially important parts such as gas turbine blades, splash plates and heat exchangers. Lastly, if reactive components (or active fillers) such as transition metals are present in the preceramic polymer system, upon pyrolysis, the reaction of such active fillers with the gaseous byproducts will cause an expansion in the volume of the PDC matrix during pyrolysis, thereby curbing the shrinkage. Importantly for the additive manufacture of ceramics, this is the first report on the incorporation of active fillers in vat photopolymerization techniques. Chapter 7 will describe iron as an active filler which when present in catalytic amounts in siloxane-based resins lowered the crystallization temperature of SiC to ~1200°C. This process will enable low temperature fabrication of more complex PDCs while also improving their strengths. The presence of crystalline domains of silicon carbide served as reinforcements to the PDC matrix. Preliminary work was also carried out on titanium as an active filler. In both cases, addition of active filler significantly increased the strengths of the PDCs.
Ceramics and Composites Processing Methods by Narottam P. Bansal,Aldo R. Boccaccini Pdf
Examines the latest processing and fabrication methods There is increasing interest in the application of advanced ceramic materials in diverse areas such as transportation, energy, environmental protection and remediation, communications, health, and aerospace. This book guides readers through a broad selection of key processing techniques for ceramics and their composites, enabling them to manufacture ceramic products and components with the properties needed for various industrial applications. With chapters contributed by internationally recognized experts in the field of ceramics, the book includes traditional fabrication routes as well as new and emerging approaches in order to meet the increasing demand for more reliable ceramic materials. Ceramics and Composites Processing Methods is divided into three sections: * Densification, covering the fundamentals and practice of sintering, pulsed electric current sintering, and viscous phase silicate processing * Chemical Methods, examining colloidal methods, sol-gel, gel casting, polymer processing, chemical vapor deposition, chemical vapor infiltration, reactive melt infiltration, and combustion synthesis * Physical Methods, including directional solidification, solid free-form fabrication, microwave processing, electrophoretic deposition, and plasma spraying Each chapter focuses on a particular processing method or approach. Collectively, these chapters offer readers comprehensive, state-of-the-science information on the many approaches, techniques, and methods for the processing and fabrication of advanced ceramics and ceramic composites. With its coverage of the latest processing methods, Ceramics and Composites Processing Methods is recommended for researchers and students in ceramics, materials science, structural materials, biomedical engineering, and nanotechnology.
