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Advances in Brazing

Advances in Brazing
  • Author : Dušan P Sekulić
  • Publsiher : Elsevier
  • Release : 04 March 2013
  • ISBN : 0857096508
  • Pages : 620 pages
  • Rating : 4/5 from 21 ratings
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Summary:
Brazing processes offer enhanced control, adaptability and cost-efficiency in the joining of materials. Unsurprisingly, this has lead to great interest and investment in the area. Drawing on important research in the field, Advances in brazing provides a clear guide to the principles, materials, methods and key applications of brazing. Part one introduces the fundamentals of brazing, including molten metal wetting processes, strength and margins of safety of brazed joints, and modeling of associated physical phenomena. Part two goes on to consider specific materials, such as super alloys, filler metals for high temperature brazing, diamonds and cubic boron nitride, and varied ceramics and intermetallics. The brazing of carbon-carbon (C/C) composites to metals is also explored before applications of brazing and brazed materials are discussed in part three. Brazing of cutting materials, use of coating techniques, and metal-nonmetal brazing for electrical, packaging and structural applications are reviewed, along with fluxless brazing, the use of glasses and glass ceramics for high temperature applications and nickel-based filler metals for components in contact with drinking water. With its distinguished editor and international team of expert contributors, Advances in brazing is a technical guide for any professionals requiring an understanding of brazing processes, and offers a deeper understanding of the subject to researchers and engineers within the field of joining. Reviews the advances of brazing processes in joining materials Discusses the fundamentals of brazing and considers specific materials, including super alloys, filler metals, ceramics and intermetallics Brazing of cutting materials and structural applications are also discussed


Advances in Brazing

Advances in Brazing
  • Author : Dušan P Sekulić
  • Publisher : Elsevier
  • Release : 04 March 2013
GET THIS BOOKAdvances in Brazing

Brazing processes offer enhanced control, adaptability and cost-efficiency in the joining of materials. Unsurprisingly, this has lead to great interest and investment in the area. Drawing on important research in the field, Advances in brazing provides a clear guide to the principles, materials, methods and key applications of brazing. Part one introduces the fundamentals of brazing, including molten metal wetting processes, strength and margins of safety of brazed joints, and modeling of associated physical phenomena. Part two goes on to

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Advances in brazing

Advances in brazing
  • Author : H. Krappitz
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Although brazing is commonly regarded as a joining technique, the following chapter will introduce possibilities for using brazing as a coating technology, which offers new and unique solutions for applying functional coatings to surfaces. Details are presented of some fundamental aspects of this coating technology with regard to processes, metallurgical considerations and mechanical properties, followed by the various methods for producing coatings by brazing. Examples of applications are explained with regard to the various coating techniques. The chapter gives an

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Advances in brazing

Advances in brazing
  • Author : N. Eustathopoulos,F. Hodaj,O. Kozlova
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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The fundamental equations of wetting and adhesion are presented and the contact angles of non-reactive liquid metals and molten oxides on different types of solids are interpreted. The main features of reactive wetting are briefly described and illustrated. The two types of brazing used in practice (capillary brazing and sandwich brazing) are defined and the thermodynamics and kinetics of capillary infiltration are presented. The different configurations expected to occur in ‘sandwich brazing’ at varying intrinsic contact angles are described and

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Advances in brazing

Advances in brazing
  • Author : W. Tillmann,A. Elrefaey,L. Wojarski
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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An important brazing application is the production of cutting and machining tools. This chapter provides an overview of brazing alloys for the joining of cutting materials. Process-related problems and solutions are presented and discussed. High strength values can be achieved with the right filler alloy and joint design. Most cemented carbides consist of a hard material such as tungsten carbide and a metallic binder. Due to the high carbide content, wetting and bonding reactions have to be monitored. Addition of

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Advances in brazing

Advances in brazing
  • Author : T.-T. Ikeshoji
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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The brazing of carbon–carbon (C/C) composites and metals is a necessary manufacturing technique for some high-performance applications. In this chapter, the fundamentals of brazing C/C composites to metals are described including the wettability of the brazing filler on C/C composites and the coefficient of thermal expansion (CTE) difference between C/C composites and metals. Commercially available brazing fillers for the brazing of C/C composites and various metals are listed. The effect of fiber orientation on

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Advances in brazing

Advances in brazing
  • Author : R. Asthana,M. Singh
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Advanced ceramic-matrix composites (CMCs) outperform traditional ceramics in many ways and have shown potential for demanding applications. Net-shape manufacture of CMC parts is challenging, and many advanced applications demand robust and reliable integration technologies such as brazing. Brazing of CMC/metal joints is reviewed, highlighting scientific issues together with a discussion of some of the challenges that brazing of CMCs presents. Brazing practices for SiC–SiC, C–SiC, C–C, ZrB2-based ultra-high-temperature composites, and oxide, nitride and silicate-based composites

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Advances in brazing

Advances in brazing
  • Author : A. Rabinkin,A.E. Shapiro,M. Boretius
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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A quiet revolution in industry has happened over the last 50 or so years due to the use of diamond and cubic boron nitride (CBN) in many applications. Joining of diamonds to various materials via brazing is very specific compared with conventional brazing due to the unique nature of diamond. This chapter describes the properties of diamond and CBN, and their wetting by and interaction with metals and alloys; factors that affect these interactions; and practical aspects of diamonds and CBN

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Advances in brazing

Advances in brazing
  • Author : H. Zhao,R. Woods
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Compact aluminum heat exchangers are widely used in the automotive industry. The market in the heating, ventilation, air conditioning and refrigeration (HVAC&R) industry is expected to grow. Controlled atmosphere brazing (CAB) is the state-of-the-art mass production technology. This chapter presents the manufacturing process for compact aluminum heat exchangers (e.g. micro-channel heat exchangers) using CAB. Suitable aluminum alloys are introduced and the principles of brazing sheet metallurgy, filler metal selection and application are described. Fluoride fluxes and recent developments

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Advances in brazing

Advances in brazing
  • Author : A. Rabinkin
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Huge technological progress in high-temperature brazing has made in the last few decades. This chapter reassesses the topic. It describes compositional and structural specifics of base metal (BM) classes at high temperatures. The classification of brazing filler metals (BFMs) is given, with some new compositions. In choosing optimal BFMs the metallurgical background is built on phase diagrams of BM and BFM and potential interactions. Novel methods of BFM placements, joint loading and heat treatment are covered. Rapidly solidified amorphous BFMs

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Advances in brazing

Advances in brazing
  • Author : D.P. Sekulić
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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The phenomena involved in a brazing process constitute a set of very complex spatially distributed, transient physical and chemical processes, influenced by multiple parameters. This has been difficult to model reliably. This chapter offers a high level review of three broad areas of modeling: (i) the heating/cooling process during brazing, (ii) the thermomechanical behavior of brazed assemblies, and (iii) micro-scale phenomena, taking place in the joint zone and primarily related to transport phenomena. This discussion illustrates the importance of

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Advances in brazing

Advances in brazing
  • Author : V.F. Khorunov,O.M. Sabadash
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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The chapter focuses on the problems of reactive-flux brazing and soldering of aluminium and aluminium to steel. High-temperature fluxes of the K,Al,Si/F salt system improve wetting and capillary properties of filler metals during brazing. The possibility of brazing aluminium using a reactive flux without a filler metal is established. Brazed joints on aluminium have strength equal to that of the base metal, and joints between aluminium and steel preserve their performance after thermal cycling tests. Reactive fluxes

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Advances in brazing

Advances in brazing
  • Author : C.A. Walker
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Metal–nonmetal brazing is an established joining method used to fabricate products such as hermetic electronic packages, insulators for power generation and turbo-machinery components. Brazing presents opportunities for the materials engineer seeking to utilize recently engineered materials in advanced applications and extreme environments. Three commonly used brazing methods used for joining metals to nonmetals will be discussed: conventional brazing methods that use metallization coatings on the nonmetal surface to be brazed; active brazing methods that eliminate the need for metallization

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Advances in brazing

Advances in brazing
  • Author : D.K. Hawksworth
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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The creation of a thermally induced metallic bond between aluminium components in the absence of powdered brazing fluxes has been achieved using a number of different techniques. Oxide disruption to promote the wetting and flow of filler metal on the surface is necessary for brazed joint formation. This can be achieved by making modifications to the brazing sheet surface, filler metal alloy and the use of composite alloy–flux materials. Different inert atmosphere brazing techniques and associated brazing mechanisms are

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Advances in brazing

Advances in brazing
  • Author : H. Peng
  • Publisher : Elsevier Inc. Chapters
  • Release : 04 March 2013
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Ceramics are inorganic non-metallic materials made from natural or synthetic compounds using shaping and high-temperature sintering processes. At present, the poor plasticity and low impact resistance of engineering ceramics have limited their further application. Joining ceramics or composites to metal is challenging because of their chemical dissimilarity and differences in coefficient of thermal expansion. The complexity and high cost of procedures that can overcome these problems limit their application. In this chapter, the difficulties of brazing ceramics and solutions are

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