Refinement and Alteration of Electrode Surfaces : Electrodeposition of Nickel and Cobalt Based Alloys PDF Download
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Author: Christopher P. Karwas
Publisher:
ISBN:
Category : Electroplating
Languages : en
Pages : 440
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Book Description
Author: Christopher P. Karwas
Publisher:
ISBN:
Category : Electroplating
Languages : en
Pages : 440
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
The electroless deposition of nickel and cobalt from hypophosphite- based solutions has found numerous applications by virtue of characteristics unmatched by electrodeposition. For example, since deposition is produced by contact of the catalytic surface with the solution, exceptionally good deposit uniformity may be obtained. Also, the presence of phosphorus (from hypophosphite) in the deposits provides exceptional hardness (1) and corrosion resistance (2) to nickel and valuable magnetic properties (3) to cobalt. Electroless deposits may, in addition, be directly applied to non-conductive materials (4). Electroless deposition of copper (5) and palladium (6) has also been successfully applied utilizing formaldehyde and hydrazine reducing agents respectively. The electroless deposition process, at present, is limited to the four metals mentioned above. It was felt that electroless deposits with a wider variety of chemical, physical, and magnetic properties might be achieved by means of codeposition of other metals during electroless nickel or cobalt deposition.
Author: Abner Brenner
Publisher: Elsevier
ISBN: 1483223108
Category : Technology & Engineering
Languages : en
Pages : 677
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Book Description
Electrodeposition of Alloys: Principles and Practice, Volume II: Practical and Specific Information provides sufficient information for preparing and operating alloy plating baths. This book is organized into five sections encompassing 21 chapters that also consider the facts and theory of alloy plating. The five sections discuss the five types of alloy plating system with respect to the plating variables. Each section deals with the fundamental bases of alloy deposition, which have been summed up in six principles. This book further examines the role of diffusion in alloy deposition and the role of the density versus potential relations in alloy deposition, as well as certain misconceptions regarding their value in alloy deposition have been pointed out. This book will prove useful to electrochemists, researchers, and electrochemistry teachers and students.
Author: Jorge Gabriel Vazquez
Publisher:
ISBN:
Category :
Languages : en
Pages : 158
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Book Description
Nowadays, the development of novel materials involves diverse branches of science as a consequence of the new requirements imposed by modern society. This includes aspects ranging from the optimization of the manufacturing processes to the durability of the materials themselves. Ideally, some synergism should exist between the durability, the properties of interest in the material. Although metals in their pure state are often desired, the best properties or combination of properties often cannot be satisfactorily achieved with a single metal. In these situations, the desired properties can be attained by the formation of alloys of these metals with others. Ni-Co alloys are no exception and so have received considerable attention especially in microsystem technology due to the magnetic properties of cobalt and the corrosion and wear resistance of nickel. Moreover, this interest has been further stimulated by its use in the manufacture of sensors, magnetic devices, microrelays, inductors, actuators, memory devices and hard drives. The fabrication of these alloys (particularly coatings) via electroplating has been shown to be techno-economically feasible in comparison with other processes: capability of high volume production, low cost and the ability to coat thin layers on non-planar substrates. In addition, the materials fabricated by this technology exhibit excellent characteristics such as refined grain structure, smoothness, low residual stress and coercivity, etc., making them advantageous to materials produced by other physical methods of deposition. Nevertheless, one of the biggest problems faced during the formation of Ni-Co alloys is its anomalous behavior whereby cobalt preferentially deposits over nickel under most conditions, even when the Ni(II) concentration is significantly higher than that of Co(II).
Author: Andrew Y. C. Nee
Publisher: Springer
ISBN: 9781447146698
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
The Springer Reference Work Handbook of Manufacturing Engineering and Technology provides overviews and in-depth and authoritative analyses on the basic and cutting-edge manufacturing technologies and sciences across a broad spectrum of areas. These topics are commonly encountered in industries as well as in academia. Manufacturing engineering curricula across universities are now essential topics covered in major universities worldwide.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1368
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Book Description
Author: Akmal Sjarif
Publisher:
ISBN:
Category : Alloy plating
Languages : en
Pages : 138
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Book Description
Author: Qianwen Huang
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages :
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Book Description
Amorphous alloys exhibit unique and highly advantageous mechanical, chemical, and magnetic properties, including superb corrosion resistance and extreme hardness. Their fabrication by electrodeposition offers significant advantages, the major ones being low cost, relatively high rate, and the ability to coat parts made of less expensive base metals, imparting them with excellent surface properties and corrosion resistance. A major limitation on the application of amorphous alloys has been their relatively low (~300°C) recrystallization temperature, upon which the alloys lose many of their unique properties. Presented here are new electrodeposition processes for the fabrication of ternary amorphous alloys that offer substantially higher recrystallization temperature (~400°C). It is shown that the ternary amorphous alloy, Ni-Co-P, is particularly advantageous. The effect of different current waveforms, including pulse and periodic reverse current on the amorphous alloys composition and properties, are studied. Different chloride-based electrolytes are introduced and shown to be beneficial. A new process for the electrodeposition of Fe-P, an amorphous alloy that provides important advantages, including the potential of being a non-allergenic replacement for nickel, has been also developed. The electrodeposition processes are described and the characterization of the deposited amorphous alloys is provided.
Author: v
Publisher: Book Rivers
ISBN: 9391000703
Category : Antiques & Collectibles
Languages : en
Pages : 155
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Book Description
Author: Mordechay Schlesinger
Publisher: John Wiley & Sons
ISBN: 1118063147
Category : Science
Languages : en
Pages : 755
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Book Description
The definitive resource for electroplating, now completely up to date With advances in information-age technologies, the field of electroplating has seen dramatic growth in the decade since the previous edition of Modern Electroplating was published. This expanded new edition addresses these developments, providing a comprehensive, one-stop reference to the latest methods and applications of electroplating of metals, alloys, semiconductors, and conductive polymers. With special emphasis on electroplating and electrochemical plating in nanotechnologies, data storage, and medical applications, the Fifth Edition boasts vast amounts of new and revised material, unmatched in breadth and depth by any other book on the subject. It includes: Easily accessible, self-contained contributions by over thirty experts Five completely new chapters and hundreds of additional pages A cutting-edge look at applications in nanoelectronics Coverage of the formation of nanoclusters and quantum dots using scanning tunneling microscopy (STM) An important discussion of the physical properties of metal thin films Chapters devoted to methods, tools, control, and environmental issues And much more A must-have for anyone in electroplating, including technicians, platers, plating researchers, and metal finishers, Modern Electroplating, Fifth Edition is also an excellent reference for electrical engineers and researchers in the automotive, data storage, and medical industries.
