Download or read book Multi functional Protective Coatings for Plastics Using Open air Spray Plasma Deposition written by Yichuan Ding and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transparent plastics are increasingly important to emerging technologies such as light-weight transportation, flexible electronics, and display technologies. However, due to the low surface hardness, plastics can be easily scratched and degraded which significantly reduce their optical qualities and lifetimes. In this dissertation, I will focus on the development of durable functional protective coatings for plastics and new understandings of their mechanical properties including adhesion, stiffness, and moisture-assisted cracking behavior. I will demonstrate two scalable processing strategies for synthesizing these coatings, namely, spray deposition of sol-gel precursors and open-air plasma deposition. Firstly, I will focus on the processing of an organosilicate-based bilayer coating with unprecedented combination of adhesion and stiffness using open-air spray and plasma depositions. The bilayer coating exhibited a > 90% transparency in the visible wavelengths, 8-fold the adhesion energy and 4-fold the Young's modulus of commercial sol-gel polysiloxane coatings. The coating deposition rate, elastic modulus, hardness and adhesion to poly methyl methacrylate (PMMA) substrates will be discussed and correlated to the molecular structures and chemical compositions of the coatings. Secondly, I will demonstrate the molecular design strategies for engineering coating's deformation rate sensitivity and fracture resistance in a moist environment. With increasing non-hydrolysable organic network connectivity, the mechanical behavior of the coatings can vary from almost perfectly elastic to increasingly viscoelastic in a controlled fashion. The related fracture resistance was also found to be significantly improved. New insights into the fundamental molecular-scale relaxation and cracking mechanisms of the coatings will also be highlighted. Finally, I will describe a novel and versatile dual-source deposition method involving ultrasonic spraying and open-air plasma deposition for making durable multifunctional nanocomposite coatings. Previous work for making nanocomposites focused on incorporating nanoparticles by either in-situ growth in the matrix or by dispersing into the matrix precursor before deposition. However, in this new method, the nanoparticles and coating matrix are independently deposited which eliminate the potential difficulties associated with preparing high mass fraction composites with well-dispersed nanoparticles. The capability of incorporating several different functional nanoparticles into durable coating matrix with good nanoparticle dispersity, uniformity and strong matrix-nanoparticle interfacial interactions will be highlighted. The effect of nanoparticle concentration, size, and film thicknesses on coatings surface morphology, optical properties and mechanical properties will also be discussed.

Download or read book Plasma Spray Coating written by Robert B. Heimann and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past two decades, thermal spraying of metallic, ceramic and composite coatings has emerged as a powerful tool for surface engineering, with many new applications and markets continually being developed. This book will help materials scientists and engineers to choose the most appropriate combination of materials, equipment, and operation parameters for the design of high-performance coatings with new functional properties and improved service life. Includes: * a thorough treatment of the fundamental physical processes governing plasma spray technology; * a critical assessment of advantages and disadvantages of the method compared with other suface coating techniques; * a discussion of basic equipment requirements and limitations; * case studies and typical applications to solve industrial problems. Plasma-Spray Coating offers a stimulating combination of basic concepts and practical applications. Materials scientists and engineers, as well as graduate students will find this book of enormous value.

Download or read book Protective Coatings by Plasma Deposition written by P. Moorhouse and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plasma Deposition and Treatment of Polymers Volume 544 written by Wei William Lee and published by . This book was released on 1999-09 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is immense interest, both industrial and academic, in developing processes for plasma deposition and modification of polymers. These polymers and treatments have wide-ranging applications in electronics, protective coatings, optical coatings, biomaterials, ophthalmics, corrosion protection, tribology, surface mechanics, membranes, food and pharmaceutical packaging, and sensors. In addition, fundamentals of plasma processes and technology are also of critical importance in many semiconductor processing operations such as etching and treatment of polymers, deposition of low-dielectric constant materials, and dry photoresist. The understanding of plasma polymer deposition in various technical fields, as well as in the treatment methods of polymers, have become critical. This book focuses on the deposition, modification and characterization of polymeric materials which are important for advanced technologies. Particular emphasis is placed on materials and synthesis concepts. Topics include: plasma processes for biomaterials; fundamentals of plasma processing; plasma processing for electronics and optics; and plasma treatments and functional coatings.

Download or read book Atmospheric Plasma Deposition of Transparent Coatings on Polymers written by Linying Cui and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric plasma enables plasma assisted coating deposition in ambient air at low temperature on large and/or complex geometry substrates. It has huge potential for coating synthesis and materials surface treatment at lower cost without the necessity of vacuum equipment, for applications of energy, display, aerospace, etc. In this dissertation, I present the results of atmospheric plasma deposition of transparent hard protective coatings on polymers. In order to deposit high quality coatings, we find that the interaction between atmospheric plasma, coating, and polymer substrate should all be optimized. Firstly, I studied the interaction between atmospheric plasma and polymer substrates. Atmospheric plasma was used to pretreat polycarbonate and stretched poly(methyl methacrylate) surfaces in order to enhance the adhesion of polymers to inorganic coatings. The treatment time and the chemical structure of the polymers were found to be important factors. For polycarbonate, a short treatment increased the adhesion energy by four times, while longer treatment resulted in low molecular-weight species formation and decreased adhesion. Next, I deposited dense silica coatings on polymers using atmospheric plasma. The coating deposition rate, molecular network structure, density, Young's modulus and adhesion to polymers exhibited a strong dependence on the precursor delivery temperature and rate, and the functionality and number of silicon atoms in the precursor molecules. The highest Young's modulus of the atmospheric plasma silica was four times higher than that of commercial sol-gel polysiloxane coatings. After that, I successfully deposited carbon-bridged hybrid organosilicate coating using atmospheric plasma, with the ethyl bridges incorporated in the silicate network under the ambient air environment. These coatings doubled the adhesion energy to polymers due to the molecular bridging effect, compared to commercial sol-gel polysiloxane coatings. Finally, I deposited a hard, adhesive, and highly transparent bilayer structure on polymers, with the bottom layer highly adhesive to polymer and the top layer hard to resist scratches. The method overcomes the challenge of fabricating coatings with high mechanical and interfacial properties in a one-step process. The bilayer structure exhibited ~ 100% transmittance in the visible wavelength range and no sacrifice of the hard or adhesive properties of the single sub-layers.

Download or read book Atomised Spray Plasma Deposition of Functional Polymer Coatings written by Isaias Castaneda-Montes and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Active Protective Coatings written by Anthony E. Hughes and published by Springer. This book was released on 2016-03-01 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a broad range of materials science that has been brought to bear on providing solutions to the challenges of developing self-healing and protective coatings for a range of metals. The book has a strong emphasis on characterisation techniques, particularly new techniques that are beginning to be used in the coatings area. It features many contributions written by experts from various industrial sectors which examine the needs of the sectors and the state of the art. The development of self-healing and protective coatings has been an expanding field in recent years and applies a lot of new knowledge gained from other fields as well as other areas of materials science to the development of coatings. It has borrowed from fields such as the food and pharmaceutical industries who have used, polymer techniques, sol-gel science and colloidosome technology for a range encapsulation techniques. It has also borrowed from fields like hydrogen storage such as from the development of hierarchical and other materials based on organic templating as “nanocontainers” for the delivery of inhibitors. In materials science, recent developments in high throughput and other characterisation techniques, such as those available from synchrotrons, are being increasing used for novel characterisation – one only needs to look at the application of these techniques in self healing polymers to gauge wealth of new information that has been gained from these techniques. This work is largely driven by the need to replace environmental pollutants and hazardous chemicals that represent risk to humans such as chromate inhibitors which are still used in some applications.

Download or read book Handbook of Deposition Technologies for Films and Coatings written by Peter M. Martin and published by William Andrew. This book was released on 2009-12-01 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 3e, edited by Peter M. Martin, PNNL 2005 Inventor of the Year, is an extensive update of the many improvements in deposition technologies, mechanisms, and applications. This long-awaited revision includes updated and new chapters on atomic layer deposition, cathodic arc deposition, sculpted thin films, polymer thin films and emerging technologies. Extensive material was added throughout the book, especially in the areas concerned with plasma-assisted vapor deposition processes and metallurgical coating applications.

Download or read book Environmental Barrier Coatings written by Kang N. Lee and published by MDPI. This book was released on 2020-12-29 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global increase in air travel will require commercial vehicles to be more efficient than ever before. Advanced engine hot section materials are a key technology required to keep fuel consumption and emission to a minimum in next-generation gas turbines. Ceramic matrix composites (CMCs) are the most promising material to revolutionize gas turbine hot section materials technology because of their excellent high‐temperature properties. Rapid surface recession due to volatilization by water vapor is the Achilles heel of CMCs. Environmental barrier coatings (EBCs) is an enabling technology for CMCs, since it protects CMCs from water vapor. The first CMC component entered into service in 2016 in a commercial engine, and more CMC components are scheduled to follow within the next few years. One of the most difficult challenges to CMC components is EBC durability, because failure of EBC leads to a rapid reduction in CMC component life. Key contributors to EBC failure include recession, oxidation, degradation by calcium‐aluminum‐magnesium silicates (CMAS) deposits, thermal and thermo‐mechanical strains, particle erosion, and foreign object damage (FOD). Novel EBC chemistries, creative EBC designs, and robust processes are required to meet EBC durability challenges. Engine-relevant testing, characterization, and lifing methods need to be developed to improve EBC reliability. The aim of this Special Issue is to present recent advances in EBC technology to address these issues. In particular, topics of interest include but are not limited to the following: • Novel EBC chemistries and designs; • Processing including plasma spray, suspension plasma spray, solution precursor plasma spray, slurry process, PS-PVD, EB-PVD, and CVD; • Testing, characterization, and modeling; • Lifing.

Download or read book Cold Spray Coatings written by Pasquale Cavaliere and published by Springer. This book was released on 2017-11-08 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines the contributions of experts in the field to describe the behavior of various materials, micromechanisms involved during processing, and the optimization of cold-spray technology. It spans production, characterization, and applications including wear resistance, fatigue, life improvement, thermal barriers, crack repair, and biological applications. Cold spray is an innovative coating technology based on the kinetic energy gained by particles sprayed at very high pressures. While the technique was developed in the 1990s, industrial and scientific interest in this technology has grown vastly in the last ten years. Recently, many interesting applications have been associated with cold-sprayed coatings, including wear resistance, fatigue life improvement, thermal barriers, biological applications, and crack repair. However, many fundamental aspects require clarification and description.

Download or read book Thermal Spray Fundamentals written by Pierre L. Fauchais and published by Springer Science & Business Media. This book was released on 2014-01-24 with total page 1587 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with the fundamentals necessary for understanding thermal spray technology. Coverage includes in-depth discussions of various thermal spray processes, feedstock materials, particle-jet interactions, and associated yet very critical topics: diagnostics, current and emerging applications, surface science, and pre and post-treatment. This book will serve as an invaluable resource as a textbook for graduate courses in the field and as an exhaustive reference for professionals involved in thermal spray technology.

Download or read book Handbook of Thermal Spray Technology written by Joseph R. Davis and published by ASM International. This book was released on 2004-01-01 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference covers principles, processes, types of coatings, applications, performance, and testing and analysis of thermal spray technology. It will serve as an introduction and guide for those new to thermal spray, and as a reference for specifiers and users of thermal spray coatings and thermal spray experts. Coverage encompasses basics of th

Download or read book Functional Ceramic Coatings written by Bozena Pietrzyk and published by MDPI. This book was released on 2021-05-26 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic materials in the form of coatings can significantly improve the functionality and applications of other engineering materials. Due to a wide range of controllable features and various deposition methods, it is possible to create tailored substrate–coating systems that meet the requirements of modern technologies. Therefore, it is crucial to understand the relationships between the structures, morphology and the properties of ceramic coatings and expand the base of scientific knowledge about them. This book contains a series of fourteen articles which present research on the production and properties of ceramic coatings designed to improve functionality for advanced applications.

Download or read book Plasma Spraying Theory And Applications written by R Suryanarayanan and published by World Scientific. This book was released on 1993-06-09 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent advances in plasma spraying are discussed in this book which divides into two sections — theory and application. The book presents sophisticated experimental techniques, diagnostics, theoretical models and computer simulations which not only improve the understanding and uses of the spraying process but also help to increase the reliability factor of the manufacturing components. Applications that are metallurgical, aeronautical, automobile, chemical, etc. are also shown. More importantly, applications that include silicon for solar cells, magnets and superconductors are also discussed for the first time. Advanced graduate students in materials science and engineering, research scientists, engineers and industries involved in plasma spray applications will benefit from this book.

Download or read book Smart Coatings written by Theodore Provder and published by . This book was released on 2007 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 25 years coatings technologies have been influenced by the need to lower volatile organic contents (VOC) in order to comply with stricter environmental regulations as well as to reduce the use of costly petroleum based solvents. During this time the use of waterborne coatings in the architectural, industrial maintenance and original equipment manufacturing (OEM) sectors has continued to grow replacing solvent based coatings while meeting the ever decreasing VOC targets. In addition to waterborne coatings, other alternative technologies in the industrial and OEM sectors include powder coatings, uv-curable coatings and high solids coatings have had significant growth. Traditionally these coatings had the primary functions of protecting and decorating substrates. More recently, there has been growth in Research and Development and commercial product generation of coatings which have novel functions and sense and interact with their environment in addition to having the traditional protection and decoration functions. These coatings are often referred to as Smart Coatings. These types of coatings generally provide significant added value. Smart Coatings can be achieved in many ways such as by addition of additives and strategically designing polymer structures and coatings morphologies.

Download or read book Modern Surface Technology written by Friedrich-Wilhelm Bach and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This translation of a successful German title provides a broad and fundamental overview of current coating technology. Edited by experts from one of the largest research centers for this field in Germany, this valuable reference combines research and industrial perspectives, treated by authors from academia and industry alike. They discuss the potential of the many innovations introduced into industrial application in recent years, allowing materials scientists and engineers to find the appropriate solution for their own specific coating problems. Thus, with the aid of this book, it is possible to make coating technology an integral part of R&D, construction and production.

Download or read book Metal Reinforced Ceramics written by Andrew J. Ruys and published by Woodhead Publishing. This book was released on 2020-11-07 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Reinforced Ceramics covers the principle of metal-fiber-reinforced ceramics, a well-known topic in the field of reinforced concrete. Much of the work that has been done has remained unpublished, hidden in industrial company archives due to the commercial sensitivity associated with the respective technologies that prevailed at the time, which no longer applies today. This book will discuss advanced technologies that have largely been undocumented before in a broad range of industrial application areas, with updates on alumina, silicon carbide, boron carbide, tungsten carbide, fused silica, and carbon-based ceramics which are hard, heat resistant, wear resistant, and chemically durable. - Provides detailed information on fundamental principles, advanced processing technologies and industrial applications - Features comprehensive industrial knowledge not usually in the public domain from the author's experience spanning more than three decades - Features armor ceramics, bioceramics, aerospace, mining and architectural ceramic applications