Advances In Brazing

Advances in Brazing PDF
Author: Dušan P. Sekulić
Publisher: Woodhead Publishing Limited
ISBN: 9780857094230
Size: 26.34 MB
Format: PDF
Category : Technology & Engineering
Languages : en
Pages : 600
View: 6758

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Book Description: Brazing is a technology for bonding similar or dissimilar substrate materials by using temperatures above 450 degrees Celsius to effect the phase change in an added filler of clad, preferably without markedly impacting the integrity of the substrate(s). This book offers a collection of nineteen in-depth presentations devoted to a number of state-of-the art brazing topics. The authors represent some of the most respected world institutions in the field, including national laboratories, agencies, academic organizations, and research centers from industrial corporations. 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 considers specific materials, such as super alloys, filler metals for high temperature brazing, diamonds and cubic boron nitride, and varied ceramics and intermetallics. Chapters explore brazing of carbon-carbon (C/C) composites to metals, and the final section discusses applications of brazing and brazed materials, including brazing of cutting materials, use of coating techniques, and metal-nonmetal brazing for electrical, packaging and structural applications, 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.

Advances In Brazing

Advances in brazing PDF
Author: H. Krappitz
Publisher: Elsevier Inc. Chapters
ISBN: 0128088869
Size: 55.43 MB
Format: PDF, ePub, Docs
Category : Technology & Engineering
Languages : en
Pages : 620
View: 2314

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Book Description: 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 overview of the major technologies of coating by brazing and demonstrates that this relatively unknown coating technique offers complementary possibilities to other well-established coating processes. It is shown that the specific possibilities of coating by brazing create a niche where this coating technique can offer superior solutions.

Advances In Brazing

Advances in brazing PDF
Author: W. Tillmann
Publisher: Elsevier Inc. Chapters
ISBN: 0128088850
Size: 72.46 MB
Format: PDF, ePub, Docs
Category : Technology & Engineering
Languages : en
Pages : 620
View: 942

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Book Description: 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 active elements can help to induce a wetting reaction. Brazing ceramic cutting materials requires the use of active filler alloys to achieve a wetting reaction. The chapter reviews the alloys required. A joint can be weakened by interfacial effects or mismatches in physical properties. Employing the right filler metal with an adapted brazing process can significantly improve joint quality. Stress calculations based on the finite element method contribute to better joint design with reduced stress levels.

Advances In Brazing

Advances in brazing PDF
Author: A. Rabinkin
Publisher: Elsevier Inc. Chapters
ISBN: 0128088761
Size: 38.30 MB
Format: PDF, Mobi
Category : Technology & Engineering
Languages : en
Pages : 620
View: 5329

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Book Description: 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 are described. The modern outlook on metallurgical paths of joint formation and an understanding of brazing mechanisms are provided. Finally, recent examples of advanced applications are given, particularly in the aerospace and automotive industries and in energy conservation and environment protection.

Advances In Brazing

Advances in brazing PDF
Author: N. Eustathopoulos
Publisher: Elsevier Inc. Chapters
ISBN: 0128088729
Size: 67.53 MB
Format: PDF, ePub, Mobi
Category : Technology & Engineering
Languages : en
Pages : 620
View: 3544

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Book Description: 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 illustrated. Three examples of brazing of metals and ceramics in non-reactive and reactive systems are discussed to show how wetting can affect brazability and the properties of brazed joints.

Advances In Brazing

Advances in brazing PDF
Author: T.-T. Ikeshoji
Publisher: Elsevier Inc. Chapters
ISBN: 0128088842
Size: 16.14 MB
Format: PDF, ePub, Docs
Category : Technology & Engineering
Languages : en
Pages : 620
View: 3479

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Book Description: 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 the joint strength of C/C composites and titanium is described. The manufacturing method for overcoming the mismatch in CTE between C/C composites and metals is also described.

Advances In Brazing

Advances in brazing PDF
Author: D.K. Hawksworth
Publisher: Elsevier Inc. Chapters
ISBN: 0128088907
Size: 21.26 MB
Format: PDF, Mobi
Category : Technology & Engineering
Languages : en
Pages : 620
View: 7101

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Book Description: 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 described, including nickel brazing, filler metal alloying, electrochemical surface treatment and composite filler material developments.

Advances In Brazing

Advances in brazing PDF
Author: A. Rabinkin
Publisher: Elsevier Inc. Chapters
ISBN: 012808877X
Size: 63.92 MB
Format: PDF, ePub, Docs
Category : Technology & Engineering
Languages : en
Pages : 620
View: 7129

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Book Description: 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 joining. Some properties of brazed joints of diamond and CBN with different metals, as well as cemented carbide inserts, are presented and discussed. Finally, application examples are provided.

Advances In Brazing

Advances in brazing PDF
Author: H. Peng
Publisher: Elsevier Inc. Chapters
ISBN: 0128088796
Size: 19.32 MB
Format: PDF, Mobi
Category : Technology & Engineering
Languages : en
Pages : 620
View: 2713

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Book Description: Intermetallics have many metallic characteristics, including luster, and electrical and thermal conductivity. Ordered intermetallic structural materials have recently been the focus of many investigations. The physical and brazing properties of Ni–Al system intermetallics, Fe–Al intermetallics and Ti–Al intermetallics are presented in this chapter, including brazing methods, joint microstructure and corresponding mechanical strengths. The suitability of a variety of brazing filler metals for Ti–Al intermetallics is also discussed, and an extensive comparison is made between the brazing of traditional materials and those including more than three intermetallics.

Advances In Brazing

Advances in brazing PDF
Author: V.F. Khorunov
Publisher: Elsevier Inc. Chapters
ISBN: 012808880X
Size: 57.93 MB
Format: PDF, ePub
Category : Technology & Engineering
Languages : en
Pages : 620
View: 1661

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Book Description: 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 can be used for furnace, induction and arc brazing. Low-temperature fluxes based on polyatomic alcohols, which contain synthesised complex tetrafluoroborates of metals with nitrogen-bearing bases, improve conditions for formation of brazed joints on aluminium.