Technology Of Dispersed Systems And Materials

Written by the founder of the field, this practice-oriented guide summarizes the author's breakthrough research results and their applications in chemical technology. The book adopts an entirely novel approach, describing the physical chemistry of structure formation and materials synthesis under dynamic conditions. It begins by developing the general theory in the first two chapters with as little mathematics as necessary and substantiated by experimental results in each case. The following chapters deal with the fundamental aspects of rheology, vibrorheology, and superfluidity of structured dispersed systems within the framework of physicochemical dynamics, while the final chapter exemplifies the technological applications of the developed methodology using real-life problems of materials science and chemical engineering. The authoritative guide to physicochemical dynamics.

Physical–Chemical Mechanics of Disperse Systems and Materials is a novel interdisciplinary area in the science of the disperse state of matter. It covers the broad spectrum of objects and systems with dimensions ranging from nanometers to millimeters and establishes a fundamental basis for controlling and tuning the properties of these systems as well as the processes taking place in them. Physical–chemical mechanics focuses on the analysis of the complex physical–chemical interfacial phenomena taking place both in the transition of a dispersed system into a material, such as in the course of pressing, sintering, hydration hardening, and sol-gel transitions, and in the course of the dispersion of bulk materials taking place in milling, mechanical treatment, friction and wear, and fracturing. These studies are based on thorough experimental investigation of contact interactions between particles in these processes. The book is divided into two sections. The first section covers basic principles of the formation, stability and rupture of contacts between particles in different media and in surfactant solutions, as well as the properties of coagulation structures and their rheology. The second section covers surface phenomena taking place in solid-like structures with phase contacts and in compact bodies with an emphasis on several applications and processes as well as the special role of the Rehbinder effect. Where appropriate and relevant, the book presents essays on specific significant and principal studies, such as the damageability of crystal and glass surfaces, the strength of industrial catalysts, the nano-mechanisms of cement hardening, the role of the structure-mechanical barrier in the stabilization of fluorinated systems, and contact interactions in papermaking. It also devotes attention to experimental methods used in physical–chemical mechanics, the direct measurement of contact strength, and relevant instrumentations. The book utilizes the content used over many years in lecture courses and includes fundamental material on colloid and surface chemistry, the strength of materials, rheology, and tensors, which makes it well suited for novices and experts in the field.

"This comprehensive guide illustrates the effects of dispersions in applications, the means necessary to achieve these effects with optical results, and how to overcome or avoid the difficulties encounteredemphasizing the dispersions of solid particles in liquid or solid media."

Atomically dispersed metallic materials (ADMMs) are the most advanced materials used in energy conversion and storage devices to improve their performance for portable electronics, electric vehicles, and stationary power stations. Atomically Dispersed Metallic Materials for Electrochemical Energy Technologies aims to facilitate research and development of ADMMs for applications in electrochemical energy devices. It provides a comprehensive description of the science and technology of ADMMs, including material selection, synthesis, characterization, and their applications in fuel cells, batteries, supercapacitors, and H2O/CO2/N2 electrolysis to encourage progress in commercialization of these clean energy technologies. Offers a comprehensive introduction to various types of ADMMs, their fabrication and characterization, and how to improve their performance Analyzes, compares, and discusses advances in different ADMMs in the application of electrochemical energy devices, including commercial requirements Describes cutting-edge methodologies in composite ADMM design, selection, and fabrication Summarizes current achievements, challenges, and future research directions Written by authors with strong academic and industry expertise, this book will be attractive to researchers and industry professionals working in the fields of materials, chemical, mechanical, and electrical engineering, as well as nanotechnology and clean energy.

The demands of industry for creating new functional materials with predetermined properties have stimulated an increasing interest in the investigation of processes occurring in plasma jets of complex chemical composition (homogeneous and heterogeneous) as well as their interaction with hard surfaces. This Proceedings volume contains contributions from leading international specialists on plasma science and technology which were presented at the 2nd International Workshop ''Plasma Jets in the Development in of New Materials Technology'', 3--9 September 1990, Frunze (USSR). The scope of the workshop incorporated the following aspects: -- modelling of the processes of momentum heat and mass transfer in homogeneous and heterogeneous plasma jets as well as interaction between the particles and the base; -- diagnostics of the parameters of gas and disperse phases in plasma flows; -- plasma-spraying processes investigations; -- processes of treatment and production of materials, including powder materials.

Excerpt from The Use of Nomenclature in Dispersion Science and Technology The use of nomenclature for describing dispersed particulate systems, along with their associated properties and components, is often inconsistent and sub ject to misinterpretation in the technical and scientific literature. For example, terms for describing the state of association of particles in suspension (e. G., aggregate or agglomerate) often carry specific connotations that vary among different authors. This guide has been prepared as a resource for researchers, engineers and students working in dispersion-based applications. In compiling this guide, we drew on a number of resources, including books, review articles and published terminologies. To the extent possible, every effort was made to maintain a degree of uniformity with existing standards and conventions, including published terminologies from the American Concrete Institute (aci), the British Standards Institute (b si), the International Union of Pure and Applied Chemistry (iupac) and the Society of Rheology, as well as current and draft astm and iso standards. We intend this guide to serve as a resource for practitioners working in various fields in which ceramic dispersions are used, where ceramic is broadly defined as a non-metallic inorganic material. Equations have been used sparingly, and only where necessary for clarity or where they are integral to the subject at hand. This is not, nor is it intended to be, an exhaustive compilation. Rather, this document focuses on commonly encountered terms, and endeavors to provide a consistent framework for improved technical communication. The technical nomenclature portion of this guide is divided into two sections. The first section is derived from Special Publication 945, and deals with general topics related to dispersion science and technology, such as particle agglomeration and colloidal stability. The second section is based on Special Publication 946, and provides definitions of terms and expressions relating to the measurement of rheological properties in liquid-based ceramic dispersions suspensions, pastes and gels). About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

The book describes the results of research dealing with two types of petroleum dispersions: water in petroleum fractions and fuels as well as asphaltenes in crude oil. Such industrial research is aimed at acquiring new knowledge useful for improving processes and products. The main goal of the research carried out was to solve problems of refining technology and the exploitation of petroleum products. Some of the developed solutions have been patented and applied in industry. The problem of solubilizing a small technological amount of water in gasoline and diesel fuels with the aid of surfactant compositions has been successfully resolved. This solution has been used in business practice; it also increases the water tolerance of gasoline with 5% ethanol and allows for the effective use of LPG. The coalescence on fibrous barriers for dewatering fractions from the atmospheric distillation of crude oil allowed for the economic removal of dispersed water and additionally - the removal from diesel distillates of a significant part of the mineral contaminations. A coalescing method of removing sodium lye dispersed in heavy gasoline from the FCC process was successfully used in an industrial plant, replacing the sand filter used in Merox technology. The deep dehydration of the hydrotreated kerosene fraction by evaporating water into an inert gas, a nitrogen blanket, was developed. The product was additionally protected against the aging processes. The influence of pyrolysis oil, a waste product of the pyrolysis process, on the physical structure of crude oil was investigated. The results of the laboratory tests were verified in industrial trials in the AVD plant. Positive test results made it possible to use pyrolysis oil on an industrial scale changing the dispersion structure and properties of crude oil as well as distillation results.

Investigations in space have been conducted in both manned and unmanned space vehicles. Space: Technologies, Materials and Structures explains the development of hardware and instrumentation designed to operate in the severe conditions of space. For the operation and repair of such vehicles, engineers and scientists must consider a broad range of practical issues, such as the construction and mounting of extended large structures, discussed here using the Mir space station as a case study. Another consideration is the manufacture of permanent joins by welding and brazing, as well as the application of various coatings by thermal evaporation. Astrophysicists, engineers and applied mathematicians will benefit from this volume.