Download or read book Tribological and Corrosion Performance of Electrodeposited Nickel Composite Coatings written by Nicholus Malatji and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The inclusion of second-phase particles in nickel-based matrix to fabricate composite coatings presents a promising solution to combating corrosion and wear deterioration of materials during service. Composite coatings possess better surface properties such as wear resistance, high microhardness, thermal stability, and corrosion resistance than the traditional nickel coatings. Their excellent properties enable them to be used in advanced industrial applications where they will be constantly exposed to severe and degrading environments. There are various surface modification techniques that are employed to produce these coatings and electrodeposition has received wide range of use in fabrication of nickel matrix composites. This technique is associated with low cost, simplicity of operation, versatility, high production rates, and few size and shape limitations. To produce advanced electrodeposits with better performance during application, the optimization and further developments of the process remain vital. Therefore, this chapter aims to review the electrofabrication and properties of nickel composite/nanocomposite coatings for corrosion and wear applications.

Download or read book Electrodeposition of Composite Materials written by A.M.A Mohamed and published by BoD – Books on Demand. This book was released on 2016-03-23 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocomposite coatings have various properties that can be utilized for corrosion protection and tribological improvements. Synthesis of the nanocomposite coatings using an electrodeposition method allows unique control of the experimental parameters. By fine tuning the experimental parameters, various compositions and properties can be obtained for the nanocomposite coatings. This book covers some of the electrochemical methods used for nanocomposite coating deposition as well as discusses in detail examples of several nanocomposite coating. The corrosion and tribological performance of the nanocomposite coatings are also covered and some nanocomposite coatings are discussed for specific technological areas, such as fuel cells and microelectronics.

Download or read book Electrodeposited Zinc Nickel Nanocomposite Coatings written by Heidi Conrad and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite coatings can demonstrate improved property performance as compared to metals and alloy materials. One category of composite coatings is composed of metal or metal alloys with a dispersed phase of nonmetallic nanoparticles. The addition of these nanoparticles has been found to improve corrosion, wear resistance, and hardness. Producing metal composite coatings using electrochemical techniques can be advantageous due to reduced production cost, lower working temperatures, and precise control of experimental parameters. Metal coatings such as zinc have been successfully co-deposited with TiO2, SiO2, CeO2 and mica particles and nickel has been co-deposited with a number of materials including TiO2, SiC, Al2O3, PTFE and silicates. Zinc-nickel alloys have long been studied for a number of properties, most notably corrosion resistance and recently their tribological properties. This chapter reviews the literature on electrodeposition of ZnNi nanocomposite coatings. Although there has been much work done on composite coatings, there is much less literature available on composite coatings with zinc-nickel alloys. So in this review, we look at the general trends for nanoparticle incorporation, deposition mechanisms, system stability, microstructures of the coatings and general corrosion trends.

Download or read book Microstructure Characterization Corrosion and Wear Resistance of Duplex Electrodeposited Ni P Ni B TiO2 Sol enhanced Nano composite Coating written by Sina Sheikholeslami and published by . This book was released on 2017 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion and wear are responsible for more than 90% of metals failure in industries. Therefore, it is imperative to overcome the detriment caused by these phenomena to save costs, materials resources, manpower and energy efficiency. Applying coatings is one of the most efficient methods to combat wear and corrosion. Among different coating methods, electrochemical deposition is the most common and appreciated method due to its simple application technique and low cost. For the coating material selection, there are many available options that are compatible with electrodeposition methods. Nickel is one of the major preferences, since it has both good corrosion resistance and mechanical properties compared to other materials. To improve the coating characteristics, several developments have been introduced and investigated. This research considers doping enforcing particles into the coating to create a composite. Compared with conventional coatings, composite coatings have exquisite properties. If the size of doping particles decreases and their dispersion through the coating improves, then the overall properties of the coating are enhanced. Thus, instead of simple composite coatings, micro and nano-composite coatings have been developed. Moreover, the development of the coating itself is not the only relevant issue. In fact, each type of coating is mostly effective against either corrosion attacks or wear. In the electrodeposited nickel coatings category, high concentration phosphorous Ni-P coating is believed to have the ultimate corrosion resistance. Ni-B was believed to be the best coating in terms of tribological behavior. This research group has determined that sol-enhanced nano-composite Ni-B-TiO2 coating is the best coating to protect the surface against wear. However, none of the mentioned coatings can effectively withstand both corrosion and wear at the same time. Facing the problem mentioned above, an idea to create a special coating that can be effective both ways was presented and considered as the provision of the current study. The idea was to simply apply a multilayer coating instead of a single-layer one. The multilayer coating was set to consist of two main layers: The first layer, or the inner layer, is to be deposited on the surface of the substrate to be the corrosion-resistance layer. The second layer, or the outer layer, is to be applied on the top of the first layer to act as a wear resistance shield. For the first layer, high-content phosphorous Ni-P coating and for the second layer, sol-enhanced nano-composite Ni-B-TiO2 coating were selected, respectively. The deposition method for the Ni-P coating was electroless plating and for the sol-enhanced nano-composite Ni-B-TiO2 coating, electroplating was conducted. Optimum sol-enhancement parameters were extracted and used from the published results of a previous study from our research group. To make comparison and investigate the enhancement in properties, along with the duplex Ni-P/NiB-TiO2 coating sample, mono-layer Ni-P and Ni-B-TiO2 coating samples were also prepared for further analysis. It was observed that the microstructure of each layer within the duplex coating is not affected by the duplex coating process and remains identical to the mono-layer coating with the same chemical composition. The XRD-EDS revealed that the chemical composition of the inner and outer layers did not change and remained as single-layer Ni-P and Ni-B-TiO2.The outer layer in the duplex coating was completely the same as the mono-layer Ni-B-TiO2 nano-composite coating with almost the same hardness and grain size. In addition, wear resistance for the duplex coating was reported to be approximately the same as the single layer Ni-B-TiO2 coating and much better than the Ni-P coating. There was also an astonishing result from comparing corrosion behavior between Ni-P and sol-enhanced Ni-B-TiO2 nano-composite coatings. No previous study compared the properties of high-concentration Ni-P coatings and sol-enhanced Ni-B-TiO2 nano-composite coatings. This study has revealed that although Ni-P coatings are generally better than Ni-B coatings in terms of corrosion resistance, the corrosion resistance of this Ni-B-TiO2 coating is slightly better than the high content Ni-P coating, given the current study specifications. However, the ultimate result of this study was to identify the duplex Ni-P/Ni-B-TiO2 coating as having the best corrosion resistance among itself, Ni-P and Ni-B-TiO2 coating samples. It was concluded that while having the same corrosion potential as single layer Ni-B-TiO2 coating, the duplex Ni-P/Ni-B-TiO2 coating has almost 10 times lower corrosion current density and thus, its corrosion kinetic rate is much slower in comparison to other coating samples. Hence, we believe the duplex coating with both good wear resistance and corrosion protection will have great application prospect in a wide range of industries.

Download or read book Nanocomposite Coatings written by Mahmood Aliofkhazraei and published by Nova Science Pub Incorporated. This book was released on 2011-01-01 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews research activities around fabrication of these kinds of two dimensional nanostructured coatings with examples of enhanced mechanical properties, corrosion resistance, and physical characteristics. As one of the useful and simple methods for fabrication of nanocomposite coatings, electrochemical deposition (electroplating) techniques are a strong focus in this book. The relation among nanotechnology and these kinds of nanostructures that come from "size effect" and "distribution effect" is discussed through different chapters of this book. Nanocomposite coatings have numerous advantages.

Download or read book Development and Evaluation of NiW Alloy and NiW TiO2 Composite Coatings on the Mechanical Properties Tribological Performance and the Corrosion Resistance of Bearing Steel written by Arindam Paul and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2016 it was estimated that corrosion related costs were 3.4% of global GDP. Coatings are widely used for preventing or controlling corrosion. However, none of the currently used corrosion resistant coatings provides enough wear resistance for gears and bearing applications. Poor surface morphology of the corrosion resistant coatings cause increased wear and friction, resulting in early failure of the rolling element. Developing electrodeposited alloy coatings that promote synergy with additives used in gear and engine oils, while providing corrosion resistance can be a viable solution. Alloyed metals provides superior properties (like hardness, physical, chemical, magnetic) compared to pure metals, even at a nanoscale. Ni-W alloy was recently been reported to have unique contribution to mechanical, tribological and corrosion resistant performance. In addition, Ni was found to promote the formation of a thicker and durable lubricating layer. However, careful evaluation of in-service life of these alloy coatings are needed. Composite nanoparticles in many cases can also improve tribological performance of the component. Researchers have studied the effect of such nanoparticles on the tribological performance of oils. Both beneficial and detrimental effect of such nanoparticles has been reported. In this study NiW alloy and NiW-TiO2 composite coatings were electrodeposited on SAE 52100 steel coupons. Pulsed reversed current (PRC) electrodeposition technique is used due to its capability of producing more dense and uniform coating. Also, incorporating TiO2 nanoparticles on the NiW matrix is hypothesized to enhance the hardness and corrosion resistance. Both NiW alloy and NiW-TiO2 coated disks were tested in fully formulated oil and mineral oil provided by John Deere. Tribological performance was evaluated in both sliding and rolling condition. Corrosion resistance property were measured in 3.5% NaCl. Sliding performance were tested using High Frequency Reciprocating Rig (HFRR), rolling performance were tested using 3 ball-on-rod rolling contact fatigue tribometer (RCF) and micro pitting rig (MPR) under boundary lubricated condition. Compositional, elemental and wear tracks analysis were done using 3D interferometer, X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray fluorescence (XRF), Raman spectroscopy and optical microscopy. Hardness measurement were done using a Nanoindentor.

Download or read book Electrodeposition and Tribological Behavior of Ni MoS2 Composite Coatings written by Lin Wu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Electroplated Ni has been widely used for protection from mild corrosion and mechanical damage. The friction and wear resistance of composite coatings were improved by the incorporation of solid lubricants molybdenum disulfide (MoS2). The electrodeposition of Ni and Ni-MoS2 composite coatings and tribological behavior of the coatings were studied. Classified by the surfactant added in the plating bath, two series of Ni-MoS2 composite coatings were successfully deposited on the mild steel substrate. The effect of the plating parameters (plating time and bath temperature), the MoS2 concentration in the bath as well as the types of surfactants (anionic surfactant SDS and cationic surfactant CTAB) were investigated. The organic additive thiourea (TU) was used to control the surface roughness of the coatings. The corresponding changes in morphology and component content were discussed.The tribological behaviors of Ni and Ni-MoS2 composite coatings were studied by the reciprocating sliding wear test performed on a ball-on-flat tribometer. The friction coefficient of composite coatings was reduced with the incorporation of solid lubricant. The lubricity of MoS2 diminished the plastic deformation and the abrasive wear of Ni and Ni-MoS2 composite coatings. The tribological properties of the Ni-MoS2 coatings changed associated with the retention of MoS2 in the wear tracks. By modifying the morphology of the coating and the volume fraction of MoS2 in the composite coating, the coating showed better MoS2 retention. A lower and slightly increased friction coefficient was achieved. A transfer film was observed on the counterface after the sliding wear test. The correlation between the microstructure of the coatings, the retention capacity of MoS2, and the wear mechanism of coatings were investigated"--

Download or read book Electrodeposition of Nickel based Composite Coatings for Tribological Applications written by Yang He and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electroless Nickel Plating Fundamentals to Applications written by Fabienne Delaunois and published by CRC Press. This book was released on 2019-10-30 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroless Nickel Plating: Fundamentals to Applications provides a complete and actualized view of electroless nickel plating, thus greatly improving the accessibility of knowledge on the subject. It touches upon all aspects of electroless nickel, from the fundamentals (including thermodynamics of electroless plating, bath chemistry, and substrate preparation) to more applied areas of the field such as bath replenishment, composite coatings, post-treatments, polyalloys, graded and multilayer coatings, ultrasound assistance, applications, and properties. Contributed to by a variety of international authors to ensure different points of view and interests are addressed, this book stands as the first complete and updated state-of-the-art text on electroless nickel in the twenty-first century. It also serves as the first technical book with a strong emphasis on nickel-boron. It also focuses on environmental aspects. Including cutting-edge content presented sufficiently extensive to be directly useful to the practitioner, this book is aimed at materials scientists, metallurgists, and other professionals working with electroless nickel plating.

Download or read book Development of Wear and Corrosion Resistant Nickel Based Coatings Through Pulse Reverse Current PRC Electrodeposition Process written by Devesh Dadhich Shreeram and published by . This book was released on 2017 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion is estimated to have cost the global economy over $2.2 trillion in 2010 (~3.5% global GDP); corrosion-resistant coatings are a multibillion-dollar market. None of the current industrial corrosion-resistant coatings provide significant wear resistance for mechanical applications such as, bearing and powertrains. Development of a single coating with high corrosion and wear resistance can fulfill this unmet need. Research in this project tests two primary hypotheses: (1) is it possible to use pulsed reverse current (PRC) electrodeposition processes to develop coatings with corrosion and a tribological performance comparable to industrial baseline standards? ; and (2) is it possible to use the PRC process to develop coatings that promote synergistic benefits with typical extreme pressure and anti-wear lubricant additives that should provide enhanced durability and friction-reduction to oil-lubricated mechanical systems?. Electrodeposited coatings were developed and analyzed using, Scanning Electron Microscope (SEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), Auger Electron Spectroscopy (AES), High Frequency Reciprocating Rig (HFRR), Pin on Disk (POD) and 3D Optical Profilometer. The corrosion and tribological performance of developed coatings was compared to the performance of baseline industrial materials such as, uncoated AISI 52100, Tungsten Carbide (WC) doped diamond like carbon (DLC) coatings, ZnNi and chromate coatings. Two types of Ni-W coatings i.e. millisecond and second range were developed via pulse reverse current (PRC) electrodeposition process. Effect of doping TiO2 nanoparticles in the millisecond range Ni-W matrix was also observed. Ni-P coatings were developed using fixed millisecond and second range parameter settings. Results showed that the second and millisecond range deposition processes had distinct effects on the properties of the coatings. Developed Ni-W and Ni-P coatings had corrosion resistance similar to the ZnNi coating and better than the 52100 and WC/DLC. The second range Ni-W coatings in fully-formulated engine oil had lowest friction coefficient values and no measurable wear. It was also observed that the tribofilm structure and stability on the second range Ni-W surfaces were peculiar when compared to all other coatings. The observed data supports both hypothesis 1 and 2.

Download or read book Tribology and Characterization of Surface Coatings written by Sarfraj Ahmed and published by John Wiley & Sons. This book was released on 2022-01-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRIBOLOGY AND CHARACTERIZATION OF SURFACE COATINGS The book provides updated information on the friction and wear behavior of coatings used in various industrial applications. Surface modification is a cost-effective process of increasing the life of components so that the whole device need not be changed if the surface is worn out. The tribological behavior of biological implants is currently an active topic and a thorough discussion is one of the book’s features. Tribology and Characterization of Surface Coatings explores key issues which are important in the research and development of surface coatings by providing updated information on friction and wear behavior of coatings used in different industrial applications. It covers the various coating deposition techniques, tribological response of nanocomposite coatings, multilayer hardfacing, and wear testing methods for coatings at nanoscale. The use of nanostructures may alter the tribological, characterization, and mechanical properties of the materials. Thermal spraying is the most widely used technique in industry for the deposition of coatings and their tribological properties need to be determined. This book also includes the recent trends in biotribology and the materials used in implants to counter the abrasive wear. Audience The book will serve as a reference to researchers, scientists, academicians, industrial engineers, and students who work in the fields of materials/polymer science and mechanical engineering. Apart from their applications to aerospace and electronics industries, the coatings are also used in the field of biomedical engineering.

Download or read book Electroplating written by Nasser Kanani and published by Elsevier. This book was released on 2004-11-23 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroplating: Basic Principles, Processes and Practice offers an understanding of the theoretical background to electroplating, which is essential if the practical results are to be as required. This book is different in that it explains HOW the electrodeposition processes work, covering such topics as the elctrodeposition of composites, multilayers, whisker formation and giant magnetoresistive effects. The section on R & D approaches will be especially useful for organisations in the field. This is the first English language version of a well-known German language book from a prestigious author of international repute.‘Electroplating’ is an invaluable resource for manufacturers of coatings, electrochemists, metal finishers and their customers and academics in surface engineering. · Offers an understanding of the theoretical background to electroplating · Explains how the electrodeposition processes work · Prestigious author of international repute

Download or read book Handbook of Research on Corrosion Sciences and Engineering written by El Kacimi, Younes and published by IGI Global. This book was released on 2023-05-09 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: The climate change crisis presents a multi-dimensional challenge to the development of the built environment. With finite global resources and increasingly unpredictable climate patterns, the need to improve our understanding of sustainable practices and materials for construction has never been more pressing. The Handbook of Research on Corrosion Sciences and Engineering aims to shed light on the recent developments in the usage of sustainable materials to protect metallic materials against corrosion and provides emerging research exploring the theoretical and practical aspects of corrosion engineering science and technology. Covering key topics such as machine learning, smart coating, sustainability, and artificial intelligence, this major reference work is ideal for construction workers, industry professionals, researchers, academicians, scholars, practitioners, instructors, and students.

Download or read book Tribology Friction and Wear of Engineering Materials written by Hutchings and published by Springer. This book was released on 1992 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribology covers the fundamentals of tribology and the tribological response of all types of materials, including metals, ceramics, and polymers. The book provides a solid scientific foundation without relying on extensive mathematics, an approach that will allow readers to formulate appropriate solutions when faced with practical problems. Topics considered include fundamentals of surface topography and contact, friction, lubrication, and wear. The book also presents up-to-date discussions on the treatment of wear in the design process, tribological applications of surface engineering, and materials for sliding and rolling bearings. Tribology will be valuable to engineers in the field of tribology, mechanical engineers, physicists, chemists, materials scientists, and students. Features Provides an excellent general introduction to the friction, wear, and lubrication of materials Presents a balanced comparison of the tribological behavior of metals, ceramics, and polymers Includes discussions on tribological applications of surface engineering and materials for sliding and rolling bearings Emphasizes the scientific foundation of tribology Discusses the treatment of wear in the design process Uses SI units throughout and refers to U.S., U.K., and other European standards and material designations

Download or read book Coatings and Surface Treatment for Corrosion and Wear Resistance written by Kenneth Norman Strafford and published by . This book was released on 1984 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chichester : Published for the Institution of Corrosion Science and Technology, Birmingham, by E. Horwood ; New York, N.Y., U.S.A. : Halsted Press [distributor], 1984.

Download or read book Electrochemical Synthesis of Nanoengineered Materials and Their Applications written by Nosang Vincent Myung and published by Frontiers Media SA. This book was released on 2019-12-27 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion Performance of Decorative Electrodeposited Nickel and Nickel Iron Alloy Coatings written by EA. Baker and published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The corrosion performance of chromium-electroplated, decorative nickel and nickel-iron alloy electrodeposits has been studied in marine and industrial atmospheres and by means of copper-accelerated acetic acid-salt spray testing (CASS). Decorative nickel coatings, 15 and 30 ?m thick, gave better overall corrosion performance than comparable decorative nickel-iron alloy coatings. Because of the rapid staining that occurs in marine and industrial atmospheres, nickel-iron alloy deposits are not suitable for decorative applications involving moderate and severe corrosion service. Decorative nickel-iron alloy deposits, 7.6 μm thick, appear suitable for mild corrosion service on the basis of CASS test results, but results were affected by iron content and type of electrodeposited chromium. The relatively good performance of thin alloy deposits accounts for established applications in mildly corrosive environments.