Laser Surface Modification Of Alloys For Corrosion And Erosion Resistance
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| Author | : C T Kwok |
| Publisher | : Elsevier |
| Total Pages | : 401 |
| Release | : 2012-03-20 |
| Genre | : Technology & Engineering |
| ISBN | : 0857095838 |
Corrosion and erosion processes often occur synergistically to cause serious damage to metal alloys. Laser surface modification techniques such as laser surface melting or alloying are being increasingly used to treat surfaces to prevent corrosion or repair corroded or damaged components. Laser surface modification of alloys for corrosion and erosion resistance reviews the wealth of recent research on these important techniques and their applications. After an introductory overview, part one reviews the use of laser surface melting and other techniques to improve the corrosion resistance of stainless and other steels as well as nickel-titanium and a range of other alloys. Part two covers the use of laser surface modification to prevent different types of erosion, including liquid impingement, slurry (solid particle) and electrical erosion as well as laser remanufacturing of damaged components. With its distinguished editor and international team of contributors, Laser surface modification of alloys for corrosion and erosion resistance is a standard reference for all those concerned with preventing corrosion and erosion damage in metallic components in sectors as diverse as energy production and electrical engineering. Reviews recent research on the use of laser surface modification techniques, including the prevention of corrosion and repair of corroded or damaged components Discusses the techniques for improving the corrosion resistance of steels, nickel-titanium and a range of alloys Analyses the use of laser surface modification to prevent different types of erosion, including liquid impingement and laser remanufacturing of damaged components
| Author | : Jianhua Yao |
| Publisher | : Springer |
| Total Pages | : 0 |
| Release | : 2023-03-01 |
| Genre | : Technology & Engineering |
| ISBN | : 9789811689246 |
This book introduces the applications of laser in surface modification, such as laser cladding of Stellite alloys and metal-ceramic composites. Besides, nanomaterials including carbon nanotubes and Al2O3 nanoparticles are brought into the laser processing, to form high-temperature resistance, chemical stability, and wear- and oxidation-resistant composite coatings. The readers will get more knowledge about the basic principle and application of laser cladding and laser surface hardening technologies, and gain a deep insight into the process and characteristics of the nanomaterial-assisted laser surface enhancement. It provides references for the researchers, engineers, and students in the fields of mechanical engineering, laser processing, and material engineering.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2001 |
| Genre | : |
| ISBN | : |
X, 228 leaves : ill. ; 30 cm.
| Author | : Hitesh Vasudev |
| Publisher | : CRC Press |
| Total Pages | : 205 |
| Release | : 2023-07-05 |
| Genre | : Technology & Engineering |
| ISBN | : 1000902099 |
This handbook provides an insight into the advancements in surface engineering methods, addressing the microstructural features, properties, mechanisms of surface degradation failures, and tribological performance of the components. Emphasis is placed on the use of laser cladding methods because they make it simple to deposit new classes of materials such nano-composites, nanotubes, and smart materials. Handbook of Laser-Based Sustainable Surface Modification and Manufacturing Techniques discusses the main mechanism behind the surface degradation of structural components in strenuous environments. It highlights the capacity of laser cladding to operate on a wide range of substrate materials and shapes as well as presents how laser cladding can offer new possibilities in the reconditioning of components and how, in many cases, these approaches are the only solution for economic efficiency. The handbook illustrates how the type of laser, laser optics, and the parameters of the process can be efficiently selected, and thus the number of applications of laser cladding and its applications can be increased. The standard methods of testing used for various types of biomedical devices and tools, as well as the advantages of combining laser cladding with simultaneous induction heating, are described as well within this handbook. Features: Discusses the role of claddings fabricated with laser technique to withstand wear and corrosion Highlights the role of laser in the manufacturing of alloys and recent advancements in laser based additive manufacturing processes Presents the possibilities, applications and challenges in laser surfacing Illustrates the post-treatments of powders and coatings and case studies related to laser surface technology Offers the standard methods of testing applied to various types of biomedical devices and tools Goes over the advantages of combining laser cladding with simultaneous induction heating The technical outcomes of these surface engineering methods are helpful for academics, students, and professionals who are working in this field, as this enlightens their understanding of the performance of these latest processes. The audience is broad and multidisciplinary.
| Author | : J.M. Poate |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 413 |
| Release | : 2013-11-21 |
| Genre | : Science |
| ISBN | : 146133733X |
This book is an outcome of the NATO institute on surface modification which was held in Trevi, 1981. Surface modification and alloying by ion, electron or laser beams is proving to be one of the most burgeoning areas of materials science. The field covers such diverse areas as integrated circuit processing to fabricating wear and corrosion resistant surfaces on mechanical components. The common scientific questions of interest are the microstructures by the different energy deposition techniques. and associated physical properties produced The chapters constitute a critical review of the various subjects covered at Trevi. Each chapter author took responsibility for the overall review and used contributions from the many papers presented at the meeting; each participant gave a presentation. The contributors are listed at the start of each chapter. We took this approach to get some order in a large and diverse field. We are indebted to all the contributors, in particular the chapter authors for working the many papers into coherent packages; to Jim Mayer for hosting a workshop of chapter authors at Cornell and to Ian Bubb who did a sterling job in working over some of the manuscripts. Our special thanks are due to the text processing center at Bell Labs who took on the task of assembling the book. In particular Karen Lieb and Beverly Heravi typed the whole manuscript and had the entire book phototypeset using the Bell Laboratories UNIXTM system.
| Author | : C.W. Draper |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 670 |
| Release | : 2012-12-06 |
| Genre | : Medical |
| ISBN | : 9400944683 |
Proceedings of the NATO Advanced Study Institute, San Miniato, Italy, September 2-13, 1985
| Author | : Jeyaprakash Natarajan |
| Publisher | : Bentham Science Publishers |
| Total Pages | : 245 |
| Release | : 2021-11-22 |
| Genre | : Technology & Engineering |
| ISBN | : 9815036319 |
This reference presents comprehensive information about laser surface treatments for tribological applications. Chapters of the book highlight the importance of laser technology in modifying materials to optimize the effects of friction and lubrication, by explaining a range of surface modification methods used in industries. These methods include hardening, melting, alloying, cladding and texturing. The knowledge in the book is intended to give an in-depth understanding about the role of laser technology in tribology and the manufacture of industrial materials and surfaces for special applications. Key Features: - 10 chapters on topics relevant to tribology and industrial applications of laser material processing - Comprehensively covers laser surface modification of metals and alloys - Explains a wide range of surface modification methods (hardening, melting, alloying, cladding and texturing) - Covers material and tribological characterization of surfaces - Presents information in a simple structured layout for easy reading, with introductory notes for learners - Provides references for further reading This book is an ideal reference for students and learners in courses related to engineering, manufacturing and materials science. Researchers, industrial professionals and general readers interested in laser assisted machining processes and surface modification techniques will also find the book to be an informative reference on the subject.
| Author | : Jonathan R. Lawrence |
| Publisher | : Elsevier |
| Total Pages | : 719 |
| Release | : 2014-10-02 |
| Genre | : Technology & Engineering |
| ISBN | : 1782420797 |
Lasers can alter the surface composition and properties of materials in a highly controllable way, which makes them efficient and cost-effective tools for surface engineering. This book provides an overview of the different techniques, the laser-material interactions and the advantages and disadvantages for different applications. Part one looks at laser heat treatment, part two covers laser additive manufacturing such as laser-enhanced electroplating, and part three discusses laser micromachining, structuring and surface modification. Chemical and biological applications of laser surface engineering are explored in part four, including ways to improve the surface corrosion properties of metals. Provides an overview of thermal surface treatments using lasers, including the treatment of steels, light metal alloys, polycrystalline silicon and technical ceramics Addresses the development of new metallic materials, innovations in laser cladding and direct metal deposition, and the fabrication of tuneable micro- and nano-scale surface structures Chapters also cover laser structuring, surface modification, and the chemical and biological applications of laser surface engineering
| Author | : Bader M. H. M. Elkandari |
| Publisher | : |
| Total Pages | : |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
High strength 7xxx aluminium alloys are used extensively in the aerospace industry because the alloys offer excellent mechanical properties. Unfortunately, the alloys can suffer localised corrosion due to the presence of large intermetallic particles at the alloy surface that are aligned in the rolling direction. Laser surface melting (LSM) techniques offer the potential to reduce and/or to eliminate the intermetallic phases from the surface of the alloy without affecting the alloy matrix. The present study concerns the application of LSM using an excimer laser to enhance the corrosion resistance of AA 7075-T6 aluminium alloy. The initial stage of the project was aimed at optimising the laser conditions for production of a uniform microstructure, with the increase in the corrosion resistance of the alloy being determined by potentiodynamic polarization measurements in sodium chloride solution. Low and high laser energy densities were used with a different number of pulses per unit area to treat the alloy surface, which were achieved by changing both the laser fluence and the pulse repetition frequency. A laser fluence of 3.3 J/cm2 with 80 pulses was subsequently selected as the optimum condition to treat the surface of the alloy. The composition and microstructure of the alloy before and after LSM treatment, and following corrosion tests, were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD).After the laser treatment, the surface and the cross-sections of the alloy showed a significant reduction in the number of large intermetallic particles and a relatively homogenous melted layer was generated that provided significant improvement in the resistance of the alloy against corrosion, as assessed by several corrosion test methods, including exfoliation corrosion (EXCO) tests. However, delamination of the melted layer was observed after extended testing in the EXCO solution which is possibly related to the formation of bands of fine magnesium and zinc-rich precipitates within the melted layer. Therefore, anodising in sulphuric acid was applied to the LSM alloy, in order to further increase the corrosion resistance and to protect the laser treated layer from delamination by generating a thin oxide film over the LSM layer. The results revealed that the anodic treatment increased the resistance of the alloy to exfoliation attack.
| Author | : Ravi Shanker Rajamure |
| Publisher | : |
| Total Pages | : 151 |
| Release | : 2014 |
| Genre | : Aluminum alloys |
| ISBN | : |
