Download or read book Functionality of Laser Deposited Carbide Coating on Die tool Steel written by Swapnil Vallabh Shah and published by . This book was released on 2001 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Cladding of Metals written by Pasquale Cavaliere and published by Springer Nature. This book was released on 2020-11-05 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser cladding is an additive manufacturing technology capable of producing coatings due to the surface fusion of metals. The selected powder is fed into a focused laser beam to be melted and deposited as coating. This allows to apply material in a selected way onto those required sections of complex components. The process main properties are the production of a perfect metallurgically bonded and fully dense coatings; the minimal heat affected zone and low dilution between the substrate and filler material resulting in functional coatings that perform at reduced thickness, so fewer layers are applied; fine, homogeneous microstructure resulting from the rapid solidification rate that promotes wear resistance of carbide coatings; near net-shape weld build-up requires little finishing effort; extended weldability of sensitive materials like carbon-rich steels or nickel-based superalloys that are difficult or even impossible to weld using conventional welding processes; post-weld heat treatment is often eliminated as the small heat affected zone minimizes component stress; excellent process stability and reproducibility because it is numerical controlled welding process. The typical applications are the dimensional restoration; the wear and corrosion protection; additive manufacturing. The wide range of materials that can be deposited and its suitability for treating small areas make laser cladding particularly appropriate to tailor surface properties to local service requirements and it opens up a new perspective for surface engineered materials. The main key aspect to be scientifically and technologically explored are the type of laser; the powders properties; the processing parameters; the consequent microstructural and mechanical properties of the processed material; the capability of fabrication of prototypes to rapid tooling and rapid manufacturing. Distills critical concepts, methods, and applications from leading full-length chapters, along with the authors’s own deep understanding of the material taught, into a concise yet rigorous graduate and advanced undergraduate text; Reinforces concepts covered with detailed solutions to illuminating and challenging industrial applications; Discusses current and future applications of laser cladding in additive manufacturing.

Download or read book Pulsed Laser Deposition of Carbide Coatings for Rolling and Sliding Contact Applications written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research program several new concepts were investigated for improving the mechanical and tribological properties of coatings intended for applications subject to repeated rolling and sliding contacts. The investigation focused on four primary areas: 1) alloying carbides to enhance coating hardness, 2) depositing composite carbide-silver coatings for reduced friction in vacuum environments, 3) evaluating carbide-metal nacreous structures for improving coating toughness, and 4) chemical vapor deposition (CVD) methods for nanostructured composite carbide coatings. Results show that, in carbide coatings, additions of silicon can provide a useful and practical route towards improving coating hardness. This is due to the disordering effect of silicon when present in transition metal carbides. Investigation of composite carbide-silver coatings demonstrated their potential as low-friction coatings in vacuum environments. In these coatings, phase separation between carbide and silver allows the silver to act as a solid lubricant, while the carbide matrix improves wear resistance over silver alone. In the third research area, the authors evaluated whether increasing film toughness by using a metal layer in TiC-based films could enhance the wear resistance of such films. Results show that the use of thin (

Download or read book Laser Metal Deposition Process of Metals Alloys and Composite Materials written by Rasheedat Modupe Mahamood and published by Springer. This book was released on 2017-09-05 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the industrial potential and explains the physics behind laser metal deposition (LMD) technology. It describes the laser metal deposition (LMD) process with the help of numerous diagrams and photographs of real-world process situations, ranging from the fabrication of parts to the repair of existing products, and includes case studies from current research in this field. Consumer demand is moving away from standardized products to customized ones, and to remain competitive manufacturers require manufacturing processes that are flexible and able to meet consumer demand at low cost and on schedule. Laser metal deposition (LMD) is a promising alternative manufacturing process in this context. This book enables researchers and professionals in industry gain a better understanding of the LMD process, which they can then use in real-world applications. It also helps spur on further innovations.

Download or read book Laser In situ Combinatorial Carbide Coating on Steel written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential for synthesizing an in-situ grown ultra-fine carbide composite coating on the surface of steel during laser surface engineering was investigated. A 2.5 KW Nd:YAG laser was employed to modify the surface of a AISI 1010 steel deposited with a precursor powder mixture of Fe, Ti, Cr and C. With the help of laser surface engineering, carbide composite coating on the surface of plain C steel was achieved. It is envisioned that such a coating will offer superior tribological properties. Energy Dispersive Spectroscopy in supplement with X-ray Diffractometery indicated the evolution of TiC, Fe-Cr, and M--C3 as major phases in the coating. An oscillatory pattern for evolution of M--C3 was observed with respect to the laser power over the range of 900-2100 watts during processing. Although TiC was present in all the samples, the chromium carbides were absent in samples processed at certain laser powers. Corresponding to this behavior, variation in mechanical properties of the coating was observed. The hardness and wear properties of the samples without chromium carbides was inferior in comparison to samples with both TiC and chromium carbides. The roles of in-situ growth, refractory nature of the carbide particles, the non-equilibrium nature of the process and their contribution in successfully forming a composite coating have been described. Computational techniques were employed with the aim of studying possible reasons for phase evolution, stability of phases and solidification path and thus optimize parameters to tailor properties according to requirement. The temperature range of thermal transitions within the quaternary system (Fe, Ti, Cr and C) and the thermal stability of the evolved phases were studied with the help of differential scanning calorimetry (DSC). DSC studies indicated that the major exothermic reactions (formation of carbides) take place within 850-1150C̊. Temperature ranges for individual reactions were investigated. The evolved phases (TiC, M--C3, Fe-Cr and Fe3C) were characterized using X-ray diffraction (XRD). This multicomponent powder mixture, which was used as a precursor for synthesizing a composite coating on the surface of steel via laser surface engineering (LSE), was computationally investigated for thermal stability. The intended wear applications of the coating made thermal stability investigations imperative, as there is a localized heat buildup during wear, because of the contact between rubbing surfaces ...

Download or read book Surface Hardening of Steels written by Joseph R. Davis and published by ASM International. This book was released on 2002-01-01 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation A practical selection guide to help engineers and technicians choose the mot efficient surface hardening techniques that offer consistent and repeatable results. Emphasis is placed on characteristics such as processing temperature, case/coating thickness, bond strength, and hardness level obtained. The advantages and limitations of the various thermochemical, thermal and coating/surface modification technologies are compared

Download or read book Army R D A written by and published by . This book was released on 1985-11 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Army RD A Magazine written by and published by . This book was released on 1985 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metallurgical Coatings and Thin Films 1991 written by G.E. McGuire and published by Elsevier. This book was released on 2012-12-02 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions in this two-volume set represent the work of over two hundred international researchers from universities, government laboratories and industry, with diverse backgrounds and interests in a wide range of coatings and thin film processes. The two hundred and six papers attest to the fact that Metallurgical Coatings is a rapidly growing field attracting experts from the large materials, scientific and technical community. The papers will be a useful and dynamic tool for those wishing to increase their knowledge on metallurgical coatings, as well as providing a guide to recent literature in this field.

Download or read book Lasers Based Manufacturing written by Shrikrishna N. Joshi and published by Springer. This book was released on 2015-04-08 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected research papers of the AIMTDR 2014 conference on application of laser technology for various manufacturing processes such as cutting, forming, welding, sintering, cladding and micro-machining. State-of-the-art of these technologies in terms of numerical modeling, experimental studies and industrial case studies are presented. This book will enrich the knowledge of budding technocrats, graduate students of mechanical and manufacturing engineering, and researchers working in this area.

Download or read book Chemical Vapour Deposition CVD written by Kwang-Leong Choy and published by CRC Press. This book was released on 2019-06-07 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a timely and complete overview on chemical vapour deposition (CVD) and its variants for the processing of nanoparticles, nanowires, nanotubes, nanocomposite coatings, thin and thick films, and composites. Chapters discuss key aspects, from processing, material structure and properties to practical use, cost considerations, versatility, and sustainability. The author presents a comprehensive overview of CVD and its potential in producing high performance, cost-effective nanomaterials and thin and thick films. Features Provides an up-to-date introduction to CVD technology for the fabrication of nanomaterials, nanostructured films, and composite coatings Discusses processing, structure, functionalization, properties, and use in clean energy, engineering, and biomedical grand challenges Covers thin and thick films and composites Compares CVD with other processing techniques in terms of structure/properties, cost, versatility, and sustainability Kwang-Leong Choy is the Director of the UCL Centre for Materials Discovery and Professor of Materials Discovery in the Institute for Materials Discovery at the University College London. She earned her D.Phil. from the University of Oxford, and is the recipient of numerous honors including the Hetherington Prize, Oxford Metallurgical Society Award, and Grunfeld Medal and Prize from the Institute of Materials (UK). She is an elected fellow of the Institute of Materials, Minerals and Mining, and the Royal Society of Chemistry.

Download or read book Surface Engineering for Corrosion and Wear Resistance written by J. R. Davis and published by ASM International. This book was released on 2001-01-01 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineers are faced with a bewildering array of choices when selecting a surface treatment for a specific corrosion or wear application. This book provides practical information to help them select the best possible treatment. An entire chapter is devoted to process comparisons, and dozens of useful tables and figures compare surface treatment thickness and hardness ranges; abrasion and corrosion resistance; processing time, temperature, and pressure; costs; distortion tendencies; and other critical process factors and coating characteristics. The chapter Practical Guidelines for Surface Engin.

Download or read book Ion Beam Processing of Materials and Deposition Processes of Protective Coatings written by P.L.F. Hemment and published by Newnes. This book was released on 2012-12-02 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing the proceedings of three symposia in the E-MRS series this book is divided into two parts. Part one is concerned with ion beam processing, a particularly powerful and versatile technology which can be used both to synthesise and modify materials, including metals, semiconductors, ceramics and dielectrics, with great precision and excellent control. Furthermore it also deals with the correlated effects in atomic and cluster ion bombardment and implantation. Part two deals with the deposition techniques, characterization and applications of advanced ceramic, metallic and polymeric coatings or thin films for surface protection against corrosion, erosion, abrasion, diffusion and for lubrication of contracting surfaces in relative motion.

Download or read book New Materials Society Challenges and Opportunities written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1993-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers: new materials technology overview; advanced metals (magnetic alloys, superalloys, powdered metals, & more); metal matrix composites; advanced ceramic materials (techniques & applications); advanced polymer materials (description of engineering & high performance polymers) & glossary of terms. Black & white photos, graphs & tables.

Download or read book Modern Physical Metallurgy and Materials Engineering written by R. E. Smallman and published by Butterworth-Heinemann. This book was released on 1999-12-08 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sixth edition of Modern Physical Metallurgy provides a comprehensive overview of the structure of matter, the physical properties of materials and their mechanical behaviour and some of the most recent advances in physical metallurgy.

Download or read book Comprehensive Hard Materials written by Daniele Mari and published by Newnes. This book was released on 2014-02-01 with total page 1809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Hard Materials, Three Volume Set deals with the production, uses and properties of the carbides, nitrides and borides of these metals and those of titanium, as well as tools of ceramics, the superhard boron nitrides and diamond and related compounds. Articles include the technologies of powder production (including their precursor materials), milling, granulation, cold and hot compaction, sintering, hot isostatic pressing, hot-pressing, injection moulding, as well as on the coating technologies for refractory metals, hard metals and hard materials. The characterization, testing, quality assurance and applications are also covered. Comprehensive Hard Materials provides meaningful insights on materials at the leading edge of technology. It aids continued research and development of these materials and as such it is a critical information resource to academics and industry professionals facing the technological challenges of the future. Hard materials operate at the leading edge of technology, and continued research and development of such materials is critical to meet the technological challenges of the future. Users of this work can improve their knowledge of basic principles and gain a better understanding of process/structure/property relationships. With the convergence of nanotechnology, coating techniques, and functionally graded materials to the cognitive science of cemented carbides, cermets, advanced ceramics, super-hard materials and composites, it is evident that the full potential of this class of materials is far from exhausted. This work unites these important areas of research and will provide useful insights to users through its extensive cross-referencing and thematic presentation. To link academic to industrial usage of hard materials and vice versa, this work deals with the production, uses and properties of the carbides, nitrides and borides of these metals and those of titanium, as well as tools of ceramics, the superhard boron nitrides and diamond and related compounds.