Clays and Hydrosilicate Gels in Nuclear Fields


Book Description

Research on issues relating to nuclear waste storage plays an important role in contributing to finding good solutions to a problem that concerns mankind's future, predicting the durability of engineered barriers and determining the kinetics of alteration processes. The latter is now one of the vital questions in the scientific community concerned with clay minerals and hydrosilicate gels. The 20 papers published in this volume bring together the experience of specialists on topics such as hydrosilicate gels and early mineral phase crystallization, clay mineral reactions and crystallochemistry of clay minerals. The contributions are of world-wide interest, and will help to stimulate future research and analysis in this field.




Clays


Book Description

Here is a comprehensive and up to-do-date presentation of the origins, and properties of clay minerals at the Earth ́s surface. The text reviews the relatively simple laws that govern the chemical or isotopic composition and the crystalline structure of clays, and then discusses their genesis and alteration. Concluding chapters show that clay minerals can form in variety of different environments: meteorites, lavas, subduction zones, among others.




Illite


Book Description

This monograph examines the mineralogy of illite, the most common clay mineral, as a unifying theme for understanding problems of the surface environment and environmental change. The volume begins with a careful analysis of the structure and transformation of illite. Using illite as the frame, the authors describe problems in soil chemistry, clay stability and clay kinetics in sedimentary rocks.




Clays and Hydrosilicate Gels in Nuclear Fields


Book Description

Research on issues relating to nuclear waste storage plays an important role in contributing to finding good solutions to a problem that concerns mankind's future, predicting the durability of engineered barriers and determining the kinetics of alteration processes. The latter is now one of the vital questions in the scientific community concerned with clay minerals and hydrosilicate gels. The 20 papers published in this volume bring together the experience of specialists on topics such as hydrosilicate gels and early mineral phase crystallization, clay mineral reactions and crystallochemistry of clay minerals. The contributions are of world-wide interest, and will help to stimulate future research and analysis in this field.




Nuclear Materials for Fission Reactors


Book Description

This volume brings together 47 papers from scientists involved in the fabrication of new nuclear fuels, in basic research of nuclear materials, their application and technology as well as in computer codes and modelling of fuel behaviour. The main emphasis is on progress in the development of non-oxide fuels besides reporting advances in the more conventional oxide fuels. The two currently performed large reactor safety programmes CORA and PHEBUS-FP are described in invited lectures. The contributions review basic property measurements, as well as the present state of fuel performance modelling. The performance of today's nuclear fuel, hence UO2, at high burnup is also reviewed with particular emphasis on the recently observed phenomenon of grain subdivision in the cold part of the oxide fuel at high burnup, the so-called "rim" effect. Similar phenomena can be simulated by ion implantation in order to better elucidate the underlying mechanism and reviews on high resolution electron microscopy provide further information. The papers will provide a useful treatise of views, ideas and new results for all those scientists and engineers involved in the specific questions of current nuclear waste management.




Chemistry of Cements for Nuclear Applications


Book Description

In recent times the nuclear industry has thrown up challenges which cannot be met by the application of conventional civil and materials engineering knowledge. The contributions in this volume investigate all aspects of cement performance. The scope of the papers demonstrate the current balance of activities which have as their objective the elucidation of kinetics and immobilization, determining material interactions and of assessing future performance. The papers reflect the varied goals of the sponsors who include national governments, the Commission of the European Communities and the nuclear industries, coming together to keep each other at the forefront of advanced technology.




Photorefractive Materials


Book Description

The papers presented here reflect the core of the scientific activities that took place at the 1994 E-MRS conference. The contributions indicate that the field of photorefractive materials is advancing vigorously, moving into new classes of compounds, finding ways for the judicious tailoring of the microscopic properties of the materials - based on increased insight into the features of defects or quantum wells - and leading to new applications, often made possible by the advances at the forefront of the materials. The many papers presented by European participants emphasised the large amount of work being carried out here. Stimulating contributions also came from the United States and Japan, while papers presented by members from the industrial world indicate the importance of the field in this sector.




Synthetic Materials for Non-Linear Optics and Electronics


Book Description

Recent progress in organic and LED structures, in photorefractive response in molecular ferromagnetism, as well as the ultrafast and large non-linear optical response in conjugated systems are attracting great interest from the scientific community. The discovery of fullerenes has added further impetus to this field. Two areas bear particular promise for the development of a new electronics based on SEM materials: the integration of organic materials into the planar silicon technology such as, for instance, the advances in "all organic" field-effect transistors (FET) and the new organic light emitting diodes (LED); and secondly the appearance of a totally new electronics in which photons, rather than electrons, carry the information and SEM materials act as switching devices. Both aspects and more are covered in this volume. The quality of the 52 contributions attests to the fact that this subject area has progressed from the level of a scientific curiosity to a mature field of materials science introducing important technological perspectives for electronic applications.




Semiconductor Materials Analysis and Fabrication Process Control


Book Description

There is a growing awareness that the successful implementation of novel material systems and technology steps in the fabrication of microelectronic and optoelectronic devices, is critically dependent on the understanding and control of the materials, the process steps and their interactions. The contributions in this volume demonstrate that characterisation and analysis techniques are an essential support mechanism for research in these fields. Current major research themes are reviewed both in the development and application of diagnostic techniques for advanced materials analysis and fabrication process control. Two distinct trends are elucidated: the emergence and evaluation of sophisticated in situ optical diagnostic techniques such as photoreflectance and spectroellipsometry and the industrial application of ultra-high sensitivity chemical analysis techniques for contamination monitoring. The volume will serve as a useful and timely overview of this increasingly important field.




Single Chamber Processing


Book Description

Single chamber processing has attracted the attention of a number of researchers as well as industries as an alternative processing "philosophy" to complement or even replace the stringent environment of micro- and optoelectronics device fabrication. Up till now single chamber processing has been an elusive manufacturing objective throughout the history of integrated circuit technology. With the emergence of integrated processing tools in recent years, significant segments for continuous fabrication processes have been successfully realised and their potential has already innovated the industry. The 14 papers in this volume cover topics such as: The background of this approach and up-dated status; Design and concepts of relevant cluster tools equipment; Specific process modules such as deposition chambers (CVD, RTCVD, UVCVD, ...) annealing or etching reactors; and Standardization efforts. The work will provide both a stimulus for future research in this field, as well as useful reference material on the new technology trends in microelectronic device manufacturing technology.