Caracterisation De La Morphologie Daerogels De Silice En Relation Avec Les Conditions Delaboration

Download Caracterisation De La Morphologie Daerogels De Silice En Relation Avec Les Conditions Delaboration full books in PDF, epub, and Kindle. Read online Caracterisation De La Morphologie Daerogels De Silice En Relation Avec Les Conditions Delaboration ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Caractérisation de la morphologie d'aérogels de silice en relation avec les conditions d'élaboration

Author : Julien Dallamano
Publisher :
ISBN 13 :
Total Pages : 141 pages
Book Rating : 4.:/5 (116 download)

DOWNLOAD NOW!

Book Synopsis Caractérisation de la morphologie d'aérogels de silice en relation avec les conditions d'élaboration by : Julien Dallamano

Download or read book Caractérisation de la morphologie d'aérogels de silice en relation avec les conditions d'élaboration written by Julien Dallamano and published by . This book was released on 1995 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les aérogels de silice sont des matériaux extrêmement poreux qui présentent un grand intérêt tant du point de vue de la recherche fondamentale que des applications. Ils sont notamment utilisés comme matériaux isolants thermiques et phoniques, et, comme supports de catalyseurs. La caractérisation de leur porosité à toutes les échelles, ainsi que l'étude de la relation entre la texture poreuse et les conditions de préparation, est indispensable à une meilleure compréhension de leurs propriétés physiques. Les aérogels de notre étude sont préparés au Laboratoire d'application de la chimie à l'environnement de Villeurbanne (Université Claude Bernard, Lyon 1). Deux étapes sont nécessaires à l'élaboration : la première est la synthèse d'un alcogel par un processus sol-gel traditionnel et la seconde est l'évacuation du solvant au delà des conditions hypercritiques. La texture de l'alcogel initial est alors mieux préservée. Une variante, consistant à échanger le solvant par du CO2 liquide et à évacuer ce dernier dans les conditions hypercritiques, présente de nombreux avantages expérimentaux. L'étude morphologique est axée autour de deux techniques majeures : l'adsorption de gaz, qui caractérise la texture à l'échelle nanométrique et la thermoporométrie qui mesure la distribution en rayons de pores compris entre 2 nm et 300 nm. Les effets résultant du choix du catalyseur, de la quantité initiale de tétraméthoxysilane et du séchage dans les conditions hypercritiques du méthanol ou du CO2 sont étudiés. Enfin, les effets de la réhydroxylation due à une exposition à l'air ambiant sont mesurés. De manière systématique, les conditions hypercritiques du CO2 (T = 304 K, P = 7.4 MPa), plus « douces », entraînent un meilleur maintient de la texture de l'alcogel que celles du méthanol (T = 513 K, P = 7.9 MPa). Le réseau des gels catalysés par HF est particulièrement fragile et s'effondre lors du séchage hypercritique du méthanol. Cependant, la texture semble préservée après évacuation de CO2 liquide lorsque le taux de TMOS est d'au moins 20%

Emulsion Science

Author : Jerôme Bibette
Publisher : Springer
ISBN 13 : 3540708200
Total Pages : 148 pages
Book Rating : 4.5/5 (47 download)

DOWNLOAD NOW!

Book Synopsis Emulsion Science by : Jerôme Bibette

Download or read book Emulsion Science written by Jerôme Bibette and published by Springer. This book was released on 2003-07-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions occur either as end products or during the processing of products in a huge range of areas including the food, agrochemical, pharmaceuticals, paints and oil industries. As end products, emulsions allow to avoid organic solvent in processing hydrophobic coatings. Emulsion technology is a suitable approach to vehicle viscous phases. It is also a remarkable mean of targeting actives or capturing specific species. The range of applications of emulsions progresses and their manufacturing becomes more and more sophisticated. Besides this broad domain of technological interest, emulsions are raising a variety of fundamental questions at the frontier between physic and chem istry. Indeed, as a class of soft colloidal materials, emulsions science is linked to various aspects of these disciplines: phase transitions, surface forces and wetting, metastability and hydrodynamic instabilities, mechanical properties and flow. The aim of this book is to review the main important concepts governing emulsion science. In Chapter 2, repulsive interactions between liquid films are discussed as well as adhesive interaction related to wetting. In Chap ter 3, consequences of weak and strong attractions are presented, related to the well accepted liquid solid transition analogy. In Chapter 4, the basics of both bulk compressibility and shear elasticity are presented, the role of disorder being the most important aspect of the elastic behavior of these soft systems. In Chapter 5 the central question of the emulsion lifetime related to metastability is discussed.

Environmental Barrier Coatings

Author : Kang N. Lee
Publisher : MDPI
ISBN 13 : 3039365177
Total Pages : 168 pages
Book Rating : 4.0/5 (393 download)

DOWNLOAD NOW!

Book Synopsis Environmental Barrier Coatings by : Kang N. Lee

Download or read book Environmental Barrier Coatings written by Kang N. Lee and published by MDPI. This book was released on 2020-12-29 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global increase in air travel will require commercial vehicles to be more efficient than ever before. Advanced engine hot section materials are a key technology required to keep fuel consumption and emission to a minimum in next-generation gas turbines. Ceramic matrix composites (CMCs) are the most promising material to revolutionize gas turbine hot section materials technology because of their excellent high‐temperature properties. Rapid surface recession due to volatilization by water vapor is the Achilles heel of CMCs. Environmental barrier coatings (EBCs) is an enabling technology for CMCs, since it protects CMCs from water vapor. The first CMC component entered into service in 2016 in a commercial engine, and more CMC components are scheduled to follow within the next few years. One of the most difficult challenges to CMC components is EBC durability, because failure of EBC leads to a rapid reduction in CMC component life. Key contributors to EBC failure include recession, oxidation, degradation by calcium‐aluminum‐magnesium silicates (CMAS) deposits, thermal and thermo‐mechanical strains, particle erosion, and foreign object damage (FOD). Novel EBC chemistries, creative EBC designs, and robust processes are required to meet EBC durability challenges. Engine-relevant testing, characterization, and lifing methods need to be developed to improve EBC reliability. The aim of this Special Issue is to present recent advances in EBC technology to address these issues. In particular, topics of interest include but are not limited to the following: • Novel EBC chemistries and designs; • Processing including plasma spray, suspension plasma spray, solution precursor plasma spray, slurry process, PS-PVD, EB-PVD, and CVD; • Testing, characterization, and modeling; • Lifing.

Tin Oxide Materials

Author : Marcelo Ornaghi Orlandi
Publisher : Elsevier
ISBN 13 : 0128162791
Total Pages : 666 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!

Book Synopsis Tin Oxide Materials by : Marcelo Ornaghi Orlandi

Download or read book Tin Oxide Materials written by Marcelo Ornaghi Orlandi and published by Elsevier. This book was released on 2019-10-05 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tin Oxide Materials: Synthesis, Properties, and Applications discusses the latest in metal oxides, an emerging area in electronic materials. As more is learned about this important materials system, more functionalities and applications have been revealed. This key reference on the topic covers important material that is ideal for materials scientists, materials engineers and materials chemists who have been introduced to metal oxides as a general category of materials, but want to take the next step and learn more about a specific material. Provides a complete resource on tin oxide materials systems, including in-depth discussions of properties, their synthesis, modelling methods, and applications Presents information on the well-investigated SnO2, but also includes discussions on its emerging stoichiometries, such as SnO and Sn3O4 Includes the most relevant applications in varistors, sensing devices, fuel cells, transistors, biological studies, and much more

The Science and Engineering of Thermal Spray Coatings

Author : Lech Pawlowski
Publisher : John Wiley & Sons
ISBN 13 : 0470754079
Total Pages : 656 pages
Book Rating : 4.4/5 (77 download)

DOWNLOAD NOW!

Book Synopsis The Science and Engineering of Thermal Spray Coatings by : Lech Pawlowski

Download or read book The Science and Engineering of Thermal Spray Coatings written by Lech Pawlowski and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively updated and revised version builds on the success of the first edition featuring new discoveries in powder technology, spraying techniques, new coatings applications and testing techniques for coatings -- Many new spray techniques are considered that did not exist when the first edition was published! The book begins with coverage of materials used, pre-spray treatment, and the techniques used. It then leads into the physics and chemistry of spraying and discusses coatings build-up. Characterization methods and the properties of the applied coatings are presented, and the book concludes with a lengthy chapters on thermal spray applications covers such areas as the aeronautics and space, automobiles, ceramics, chemicals, civil engineering, decorative coatings, electronics, energy generation and transport, iron and steel, medicine, mining and the nuclear industries.

Mullite Formations

Author : Akshoy Kumar Chakraborty
Publisher :
ISBN 13 : 9789814877053
Total Pages : 870 pages
Book Rating : 4.8/5 (77 download)

DOWNLOAD NOW!

Book Synopsis Mullite Formations by : Akshoy Kumar Chakraborty

Download or read book Mullite Formations written by Akshoy Kumar Chakraborty and published by . This book was released on 2021-11-30 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively covers the synthesis and six types of phase transformation of mullite. Part 1 reviews previous research on synthesis of mullite gels, advantages and disadvantages of different chemical routes of synthesis, and phase transformation processes.

Optical Properties of Solar Absorber Materials and Structures

Author : Liang-Yao Chen
Publisher : Springer Nature
ISBN 13 : 9811634920
Total Pages : 187 pages
Book Rating : 4.8/5 (116 download)

DOWNLOAD NOW!

Book Synopsis Optical Properties of Solar Absorber Materials and Structures by : Liang-Yao Chen

Download or read book Optical Properties of Solar Absorber Materials and Structures written by Liang-Yao Chen and published by Springer Nature. This book was released on 2021-08-23 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of both the theory and experimental methods required to realize high efficiency solar absorber devices. It begins with a historical description of the study of spectrally selective solar absorber materials and structures based on optical principles and methods developed over the past few decades. The optical properties of metals and dielectric materials are addressed to provide the background necessary to achieve high performance of the solar absorber devices as applied in the solar energy field. In the following sections, different types of materials and structures, together with the relevant experimental methods, are discussed for practical construction and fabrication of the solar absorber devices, aiming to maximally harvest the solar energy while at the same time effectively suppressing the heat-emission loss. The optical principles and methods used to evaluate the performance of solar absorber devices with broad applications in different physical conditions are presented. The book is suitable for graduate students in applied physics, and provides a valuable reference for researchers working actively in the field of solar energy.

Transparent Oxide Electronics

Author : Pedro Barquinha
Publisher : John Wiley & Sons
ISBN 13 : 1119967740
Total Pages : 348 pages
Book Rating : 4.1/5 (199 download)

DOWNLOAD NOW!

Book Synopsis Transparent Oxide Electronics by : Pedro Barquinha

Download or read book Transparent Oxide Electronics written by Pedro Barquinha and published by John Wiley & Sons. This book was released on 2012-03-15 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transparent electronics is emerging as one of the most promising technologies for the next generation of electronic products, away from the traditional silicon technology. It is essential for touch display panels, solar cells, LEDs and antistatic coatings. The book describes the concept of transparent electronics, passive and active oxide semiconductors, multicomponent dielectrics and their importance for a new era of novel electronic materials and products. This is followed by a short history of transistors, and how oxides have revolutionized this field. It concludes with a glance at low-cost, disposable and lightweight devices for the next generation of ergonomic and functional discrete devices. Chapters cover: Properties and applications of n-type oxide semiconductors P-type conductors and semiconductors, including copper oxide and tin monoxide Low-temperature processed dielectrics n and p-type thin film transistors (TFTs) – structure, physics and brief history Paper electronics – Paper transistors, paper memories and paper batteries Applications of oxide TFTs – transparent circuits, active matrices for displays and biosensors Written by a team of renowned world experts, Transparent Oxide Electronics: From Materials to Devices gives an overview of the world of transparent electronics, and showcases groundbreaking work on paper transistors

Handbook of Hydrothermal Technology

Author : K. Byrappa
Publisher : William Andrew
ISBN 13 : 1437778364
Total Pages : 796 pages
Book Rating : 4.4/5 (377 download)

DOWNLOAD NOW!

Book Synopsis Handbook of Hydrothermal Technology by : K. Byrappa

Download or read book Handbook of Hydrothermal Technology written by K. Byrappa and published by William Andrew. This book was released on 2012-12-31 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more -- all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume.The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including: À Evolution of the technology from geology to widespread industrial use. À Descriptions of equipment used in the process and how it works.À Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.À Analysis of the direction of today's technology. In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes. Gives an overview of the evolution of Hydrothermal Technology from geology to widespread industrial use Describes the equipment used in the process and how it works Discusses problems involved with the growth of crystals, processing of technological materials, and environmental and safety issues

Spray Drying Handbook

Author : Keith Masters
Publisher :
ISBN 13 :
Total Pages : 718 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Spray Drying Handbook by : Keith Masters

Download or read book Spray Drying Handbook written by Keith Masters and published by . This book was released on 1985 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This edition reflects the changes which have occurred in spray drying technology and plant design since the publication of the fourth edition. The author argues that spray drying will remain the most important dehydration technique available to convert pumpable fluid feedstocks into powders. Topics covered include the drying principles, a survey of auxiliary equipment and the applications of spray drying in industry. There is a new chpater on spray drying in environmental control and there is a list of spray drying patents issued within the last five years. This edition also contains more data and tables that cover operation and design information for a wide range of products."--Provided by the publisher.

Phenolic Resins: A Century of Progress

Author : Louis Pilato
Publisher : Springer Science & Business Media
ISBN 13 : 3642047149
Total Pages : 543 pages
Book Rating : 4.6/5 (42 download)

DOWNLOAD NOW!

Book Synopsis Phenolic Resins: A Century of Progress by : Louis Pilato

Download or read book Phenolic Resins: A Century of Progress written by Louis Pilato and published by Springer Science & Business Media. This book was released on 2010-03-10 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: The legacy of Leo Hendrik Baekeland and his development of phenol formal- hyde resins are recognized as the cornerstone of the Plastics Industry in the early twentieth century, and phenolic resins continue to ?ourish after a century of robust growth. On July 13, 1907, Baekeland ?led his “heat and pressure” patent related to the processing of phenol formaldehyde resins and identi?ed their unique utility in a plethora of applications. The year 2010 marks the Centennial Year of the prod- tion of phenolic resins by Leo Baekeland. In 1910, Baekeland formed Bakelite GmbH and launched the manufacture of phenolic resins in Erkner in May 1910. In October 1910, General Bakelite began producing resins in Perth Amboy, New Jersey. Lastly, Baekeland collaborated with Dr. Takamine to manufacture phenolic resins in Japan in 1911. These events were instrumental in establishing the Plastics Industry and in tracing the identity to the brilliance of Dr. Leo Baekeland. Phenolic resins remain as a versatile resin system featuring either a stable, thermoplastic novolak composition that cures with a latent source of formaldehyde (hexa) or a heat reactive and perishable resole composition that cures thermally or under acidic or special basic conditions. Phenolic resins are a very large volume resin system with a worldwide volume in excess of 5 million tons/year, and its growth is related to the gross national product (GNP) growth rate globally.

Clay-containing Polymeric Nanocomposites

Author : L. A. Utracki
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574379
Total Pages : 464 pages
Book Rating : 4.5/5 (743 download)

DOWNLOAD NOW!

Book Synopsis Clay-containing Polymeric Nanocomposites by : L. A. Utracki

Download or read book Clay-containing Polymeric Nanocomposites written by L. A. Utracki and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Part 1 of a two-part set. Part 2 ISBN is 1859574823

Thermal Radiation Heat Transfer: The blackbody, electromagnetic theory, and material properties

Author : Robert Siegel
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (31 download)

DOWNLOAD NOW!

Book Synopsis Thermal Radiation Heat Transfer: The blackbody, electromagnetic theory, and material properties by : Robert Siegel

Download or read book Thermal Radiation Heat Transfer: The blackbody, electromagnetic theory, and material properties written by Robert Siegel and published by . This book was released on 1968 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Concentrated Emulsion Polymerization

Author : Eli Ruckenstein
Publisher : CRC Press
ISBN 13 : 0429649045
Total Pages : 317 pages
Book Rating : 4.4/5 (296 download)

DOWNLOAD NOW!

Book Synopsis Concentrated Emulsion Polymerization by : Eli Ruckenstein

Download or read book Concentrated Emulsion Polymerization written by Eli Ruckenstein and published by CRC Press. This book was released on 2019-03-29 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprising one volume of Functional and Modified Polymeric Materials, Two-Volume Set, this curated collection of papers by Professor Eli Ruckenstein and co-workers discusses the merits of concentrated emulsion polymerization systems, as well as their ability to yield a broad variety of products with high synthetic efficiency. Comprised of carefully curated chapters previously published by these pioneering scientists in the field, this volume offers a comprehensive view of the subject and presents functional and modified polymeric materials prepared by concentrated emulsion polymerization approaches. It covers conductive polymer composites, core-shell latex particles, enzyme/catalyst carriers, and plastics toughening and compatibilization polymerization. The authors have performed seminal studies on the preparation of functional and modified polymeric materials via concentrated emulsion polymerization. The corresponding research papers, after further selection and classification, are collected in the four chapters of this book.

Hydrothermal Reactions for Materials Science and Engineering

Author : S. Somiya
Publisher : Springer Science & Business Media
ISBN 13 : 9400907435
Total Pages : 503 pages
Book Rating : 4.4/5 (9 download)

DOWNLOAD NOW!

Book Synopsis Hydrothermal Reactions for Materials Science and Engineering by : S. Somiya

Download or read book Hydrothermal Reactions for Materials Science and Engineering written by S. Somiya and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the late Professor Emeritus Seitaro Tsuboi,l the word 'hydrothermal' was used as early as 1849 by a British geologist, Sir Roderick Murchison (1792-187 I), in relation to the action of heated water in bringing about change in the earth's crust. The term abounds in later geological literature, and is most frequently met in connection with the processes that take place at a stage near the closing in the course of consolidation of magma. When a cooling magma reaches that stage, the residual liquid contains a large proportion of volatile components, chiefly water, and further cooling results in the formation of minerals of special interest or ore-deposits. A great concern of Tsuboi's as a petrologist was to elucidate the details of the nature of various actions involved in these 'hydrothermal processes', of which little was known. It is remarkable that, in the last few decades, extensive high-temperature and high-pressure experiments, in which water plays an important role, have become practicable in laboratories, owing to the development of new apparatus and new methods. As a result, the knowledge essential to the elucidation of 'hydrothermal processes' has been improved, but is still far from complete.

Porous Ceramic Materials

Author : Dean Mo Liu
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3035703574
Total Pages : 248 pages
Book Rating : 4.0/5 (357 download)

DOWNLOAD NOW!

Book Synopsis Porous Ceramic Materials by : Dean Mo Liu

Download or read book Porous Ceramic Materials written by Dean Mo Liu and published by Trans Tech Publications Ltd. This book was released on 1995-09-26 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of porous ceramic materials has presented a new challenge to various industries, because porous ceramics are more durable in severe environments and their surface characteristics permit them to satisfy very specific requirements.

Carbon Alloys

Author : E. Yasuda
Publisher : Elsevier
ISBN 13 : 0080528538
Total Pages : 584 pages
Book Rating : 4.0/5 (85 download)

DOWNLOAD NOW!

Book Synopsis Carbon Alloys by : E. Yasuda

Download or read book Carbon Alloys written by E. Yasuda and published by Elsevier. This book was released on 2003-03-05 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the Japanese have funded a comprehensive study of carbon materials which incorporate other elements including boron, nitrogen and fluorine, hence the title of the project "Carbon Alloys". Coined in 1992, the phrase "Carbon Alloys" can be applied to those materials mainly composed of carbon materials in multi-component systems. The carbon atoms of each component have a physical and/or chemical interactive relationship with other atoms or compounds. The carbon atoms of the components may have different hybrid bonding orbitals to create quite different carbon components. Eiichi Yasuda and his team consider the definition of Carbon Alloys, present the results of the Carbon Alloys projects, describe typical Carbon Alloys and their uses, discuss recent techniques for their characterization, and finally, illustrate potential applications and future developments for Carbon Alloy science. The book contains over thirty chapters on these studies from as many researchers. The most modern of techniques, particularly in the area of spectroscopy, were used as diagnostic tools, and many of these are applicable to pure carbons also. Porosity in carbons received considerable attention.