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Books > Professional & Technical > Industrial chemistry & manufacturing technologies > Metals technology / metallurgy
Palladacycles: Catalysis and Beyond provides an overview of recent
research in palladacycles in catalysis for cross-coupling and
similar reactions. In the quest for developing highly efficient and
robust palladium-based catalysts for C-C bond formation via
cross-coupling reactions, palladacycles have played a significant
role. In recent years, they have found a wide variety of
applications, ranging from catalysts for cross-coupling and related
reactions, to their more recent application as anticancer agents.
This book explores early examples of the use of palladacyclic
complexes in catalysis employing azobenzene and hydrazobenzene as
coordinating ligands. Its applications in processes such as
selective reduction of alkenes, alkynes, or nitroalkanes are also
covered. Palladacycles: Catalysis and Beyond reveals the tremendous
advances that have taken place in the potential applications of
palladacycles as versatile catalysts in academia and industry. It
is a valuable resource for synthetic chemists, organometallic
chemists, and chemical biologists.
During September 24-26, 2001, the Faculty of Aerospace Engineering
of the Delft University of Technology in the Netherlands organised
the Glare - the New Material for Aircraft Conference, an
international conference on the relationship between design,
material choice and application of aircraft materials with respect
to new developments in industry. Eminent representatives from the
aircraft manufacturing world, including manufacturers, airlines,
airports, universities, governments and aviation authorities, were
present at this conference to meet and exchange ideas - see the
group photo on the next two pages. The fact that the conference was
held just two weeks after 'September 11, 2001' put things in a
rather unique perspective. The aim of the conference was to
illustrate the many unique applications of the Glare family of
fibre metal laminates and to provide for the exchange and
distribution of information regarding this material in order to
stimulate their acceptance and promote further application. The
introduction of fibre metal laminates into the commercial aviation
market took about 20 years' time. Introducing new technologies
should not be taken lightly, however; the aircraft industry is by
nature rather conservative and innovations must therefore be proven
- a paradox actually - in all possible ways before they can be
introduced in real aircraft structures. Not only do technical
aspects play a role in this respect; historical, cultural,
economical and political issues are equally important.
This textbook is a revised and enlarged version of notes for a
one-semester course on electromagnetism. It covers the theory of
electromagnetic phenomena in vacuum and in material media. The book
includes a CD-ROM with didactic software, to solve boundary value
problems in electrostatics and magnetostatics.
Christian Heinemann explores a unifying model which couples phase
separation and damage processes in a system of partial differential
equations. The model has technological applications to solder
materials where interactions of both phenomena have been observed
and cannot be neglected for a realistic description. The author
derives the equations in a thermodynamically consistent framework
and presents suitable weak formulations for various types of this
coupled system. In the main part, he proves the existence of weak
solutions and investigates degenerate limits.
The concept of virtual manufacturing has been developed in order to
increase the industrial performances, being one of the most ef
cient ways of reducing the m- ufacturing times and improving the
quality of the products. Numerical simulation of metal forming
processes, as a component of the virtual manufacturing process, has
a very important contribution to the reduction of the lead time.
The nite element method is currently the most widely used numerical
procedure for s- ulating sheet metal forming processes. The
accuracy of the simulation programs used in industry is in uenced
by the constitutive models and the forming limit curves models
incorporated in their structure. From the above discussion, we can
distinguish a very strong connection between virtual manufacturing
as a general concept, ?nite element method as a numerical analysis
instrument and constitutive laws,aswellas forming limit curves as a
speci city of the sheet metal forming processes. Consequently, the
material modeling is strategic when models of reality have to be
built. The book gives a synthetic presentation of the research
performed in the eld of sheet metal forming simulation during more
than 20 years by the members of three international teams: the
Research Centre on Sheet Metal Forming-CERTETA (Technical
University of Cluj-Napoca, Romania); AutoForm Company from Zurich,
Switzerland and VOLVO automotive company from Sweden. The rst
chapter presents an overview of different Finite Element (FE)
formu- tions used for sheet metal forming simulation, now and in
the past.
"Biomimetics in Materials Science" provides a comprehensive
theoretical and practical review of biomimetic materials with
self-healing, self-lubricating and self-cleaning properties. These
three topics are closely related and constitute rapidly developing
areas of study. The field of self-healing materials requires a new
conceptual understanding of this biomimetic technology, which is in
contrast to traditional engineering processes such as wear and
fatigue. "Biomimetics in Materials Science" is the first monograph
to be devoted to these materials. A new theoretical framework for
these processes is presented based on the concept of multi-scale
structure of entropy and non-equilibrium thermodynamics, together
with a detailed review of the available technology. The latter
includes experimental, modeling, and simulation results obtained on
self-healing/lubricating/cleaning materials since their emergence
in the past decade."
Fatigue of structures and materials covers a wide scope of
different topics. The purpose of the present book is to explain
these topics, to indicate how they can be analyzed, and how this
can contribute to the designing of fatigue resistant structures and
to prevent structural fatigue problems in service. Chapter 1 gives
a general survey of the topic with brief comments on the
signi?cance of the aspects involved. This serves as a kind of a
program for the following chapters. The central issues in this book
are predictions of fatigue properties and designing against
fatigue. These objectives cannot be realized without a physical and
mechanical understanding of all relevant conditions. In Chapter 2
the book starts with basic concepts of what happens in the material
of a structure under cyclic loads. It illustrates the large number
of variables which can affect fatigue properties and it provides
the essential background knowledge for subsequent chapters.
Different subjects are presented in the following main parts: *
Basic chapters on fatigue properties and predictions (Chapters 2-8)
* Load spectra and fatigue under variable-amplitude loading
(Chapters 9-11) * Fatigue tests and scatter (Chapters 12 and 13) *
Special fatigue conditions (Chapters 14-17) * Fatigue of joints and
structures (Chapters 18-20) * Fiber-metal laminates (Chapter 21)
Each chapter presents a discussion of a speci?c subject.
Machining of Metal Matrix Composites provides the fundamentals and
recent advances in the study of machining of metal matrix
composites (MMCs). Each chapter is written by an international
expert in this important field of research. Machining of Metal
Matrix Composites gives the reader information on machining of MMCs
with a special emphasis on aluminium matrix composites. Chapter 1
provides the mechanics and modelling of chip formation for
traditional machining processes. Chapter 2 is dedicated to surface
integrity when machining MMCs. Chapter 3 describes the
machinability aspects of MMCs. Chapter 4 contains information on
traditional machining processes and Chapter 5 is dedicated to the
grinding of MMCs. Chapter 6 describes the dry cutting of MMCs with
SiC particulate reinforcement. Finally, Chapter 7 is dedicated to
computational methods and optimization in the machining of MMCs.
Machining of Metal Matrix Composites can serve as a useful
reference for academics, manufacturing and materials researchers,
manufacturing and mechanical engineers, and professionals involved
with MMC applications. It can also be used to teach modern
manufacturing engineering or as a textbook for advanced
undergraduate and postgraduate engineering courses in machining,
manufacturing or materials.
Metal matrix composites are making tangible inroads into the "real"
world of engineering. They are used in engineering components such
as brake rotors, aircraft parts, combustion engines, and heat sinks
for electronic systems. Yet, outside a relatively limited circle of
specialists, these materials are mostly unknown. Designers do not
as a rule think of using these materials, in part because access to
information is difficult as these materials have not really entered
engineering handbooks. Metal Matrix Composites in Industry is thus
useful to engineers who wish to gain introductory knowledge of
these materials and who want to know where "to find" them.
Additionally, it provides researchers and academics with a survey
of current industrial activity in this area of technology.
By drawing together the current theoretical and experimental
understanding of the phenomena of delayed hydride cracking (DHC) in
zirconium alloys, The Effect of Hydrogen and Hydrides on the
Integrity of Zirconium Alloy Components: Delayed Hydride Cracking
provides a detailed explanation focusing on the properties of
hydrogen and hydrides in these alloys. Whilst the emphasis lies on
zirconium alloys, the combination of both the empirical and
mechanistic approaches creates a solid understanding that can also
be applied to other hydride forming metals. This up-to-date
reference focuses on documented research surrounding DHC, including
current methodologies for design and assessment of the results of
periodic in-service inspections of pressure tubes in nuclear
reactors. Emphasis is placed on showing how our understanding of
DHC is supported by progress in general understanding of such broad
fields as the study of hysteresis associated with first order phase
transformations, phase relationships in coherent crystalline
metallic solids, the physics of point and line defects, diffusion
of substitutional and interstitial atoms in crystalline solids, and
continuum fracture and solid mechanics. Furthermore, an account of
current methodologies is given illustrating how such understanding
of hydrogen, hydrides and DHC in zirconium alloys underpins these
methodologies for assessments of real life cases in the Canadian
nuclear industry. The all-encompassing approach makes The Effect of
Hydrogen and Hydrides on the Integrity of Zirconium Alloy
Component: Delayed Hydride Cracking an ideal reference source for
students, researchers and industry professionals alike.
The mineral resources of the industrialized countries, especially
the member nations of the North Atlantic Treaty Organiza tion, are
being depleted at such a rate that more and more of these count
ries are beginning to depend on ore imported from other coun tries.
To sustain the economic and strategie well-being of these member
countries, it becomes imperative that a program of developing and
exploiting other non-conventional mineral resources and a con
servation program where metal values from waste dumps and scrap
metals and alloys are recycled must be initiated and implemented.
In order to meet this challenge, new processes and technology must
be available for consideration in the design and operation of the
new plants. One of the possible routes of extracting the metals
from their ores, especially for multimetal complex ores and very
low grade ores, is by hydrometallurgical processing. The
hydrometallurgical route of metal recovery where dissolution
(leaching), separation and concentration (ion exchange, solvent
extraction, and membrane separation) and reduction to metal
(cementation, precipitation by gaseous reduction, and electrolysis)
is carried out at near ambient temperature is becoming more competi
tive with the conventional high temperature processes used in the
smelting of metals from high grade and beneficiated ores.
Jonathan Scragg documents his work on a very promising material
suitable for use in solar cells. Copper Zinc Tin Sulfide (CZTS) is
a low cost, earth-abundant material suitable for large scale
deployment in photovoltaics. Jonathan pioneered and optimized a low
cost route to this material involving electroplating of the three
metals concerned, followed by rapid thermal processing (RTP) in
sulfur vapour. His beautifully detailed RTP studies - combined with
techniques such as XRD, EDX and Raman - reveal the complex
relationships between composition, processing and photovoltaic
performance. This exceptional thesis contributes to the development
of clean, sustainable and alternative sources of energy
Erosive wear is characterized by successive loss of material from
the surface due to the continuous impact of solid particles. This
type of wear affects numerous industries, such as power generation,
mining, and the pneumatic transportation of solids. The worst case
scenario normally occurs where there is a combination of both
erosion and oxidation, especially at high temperatures. In order to
minimize damage caused by erosive wear, many authors propose the
use of better bulk materials or surface coatings, and generally
cermets are suggested. Various researchers have conducted
experiments to study the wear mechanisms occurring in this kind of
materials, but most of these experiments do not lead to similar
results; in fact, there is no accordance among the authors, and
moreover, some wear variables are ignored. In this book, studies
undertaken in this field by several investigators have been
discussed extensively. At the end of it, table reviews are
suggested to summarize the most important mechanisms of the erosive
wear in bulk and coating cermets.
Charge density analysis of materials provides a firm basis for the
evaluation of the properties of materials. The design and
engineering of a new combination of metals requires a firm
knowledge of intermolecular features. Recent advances in technology
and high-speed computation have made the crystal X-ray diffraction
technique a unique tool for the determination of charge density
distribution in molecular crystal. Methods have been developed to
make experimental probes capable of unraveling the features of
charge densities in the intra- and inter-molecular regions of
crystal structures. In Metal and Alloy Bonding - An Experimental
Analysis, the structural details of materials are elucidated with
the X-ray diffraction technique. Analyses of the charge density and
the local and average structure are given to reveal the structural
properties of technologically important materials. Readers will
gain a new understanding of the local and average structure of
existing materials. The electron density, bonding, and charge
transfer studies in Metal and Alloy Bonding - An Experimental
Analysis contain useful information for researchers in the fields
of physics, chemistry, materials science, and metallurgy. The
properties described in these studies can contribute to the
successful engineering of these technologically important
materials.
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