Download or read book Functionalized Coatings by Cold Spray for Joint Prosthesis written by Anna Martín Vilardell and published by . This book was released on 2017 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cold Spray (CS) is a novelty technique for the production of coatings within the field of Thermal Spray. The use of low work temperatures (under the melting point of the material) is what makes it different from the other conventional spraying techniques. CS is an ideal technique to spray materials that are sensitive to temperature, such as nanostructured and amorphous materials, or sensitive to the oxygen, as could be titanium. These characteristics may be specially promising within the field of biomedical coatings. Compared to the conventional processes, it would allow to produce coatings in a more cost-effect and environmental friendly way. The research is mostly focused on the obtaining of highly rough Commercial Pure Titanium (CP-Ti) and Calcium Phosphate (CP) coatings by CS for joint prosthesis application. An exhaustive development of coating parameter optimization has been developed and the different deposition mechanisms for each feedstock powder were analyzed as well. The mechanical and biological properties of the optimal coatings were evaluated consequently. The mechanical testing (e.g. Tensile and shear strength test and Taber test), was performed on the optimized CP-Ti coating overcoming the ASTM standard specifications for joint, shoulder and knee prosthesis; CP-Ti coating showed good bonding between particles as well with the substrate. The used of coarse titanium particles provided high roughness (Ra=40±12 æm and Rz=235±44 æm) that shows an increase in cell viability, proliferation and differentiation as well as mineralization, in comparison with a low-roughness titanium surface obtained by Sand Blasted (SB). Afterwards, additional surface modification procedures were investigated to obtain nanotextured surfaces on the as-sprayed CS titanium coatings to evaluate their in-vitro response for comparison. The anodic oxidation treatment leads to a TiO2 Nanotube (NT) layer with a pore diameter between 50-100 nm and a roughness of Ra=36.8±4.6 nm, whereas the alkaline treatment leads to a nanosurface of Ra=1.2±0.2nm, composed by very fine porosity 100nm. The nanotextured treatments lead to an increase of cell viability in comparison with the as-sprayed CP-Ti coating as well as high cell differentiation due to its nanofeatures. On the other hand, Hydroxyapatite (HA) coatings were well-deposited by CS without amorphization. Two different HA powders were used as feedstock, a sintered HA powder with a crystalline microstructure, and agglomerate HA feedstock powder with a nanocrystalline microstructure. Both powders show different deposition by CS according to their microstructure; particle deposition of sintered HA powder occurred by slight void collapse and dynamic fragmentation followed by cracking and crushing and reduction in crystal size by plastic deformation mechanisms, whereas agglomerate HA powder a consolidation between particles is caused by the tamping effect produced by the continuous impact of incoming particles onto the already adhered ones, leading to coating build up. Although sintered HA coatings show high cell differentiation, agglomerated HA coatings result in higher cell viability and proliferation, as well as a more homogeneous cell deposition along the coating; agglomerate HA coatings were compared to HA coatings obtained by conventional techniques (e.g. Plasma Spray), and an increase of cell viability and proliferation were observed according to the crystalline HA percentage (CSPS). To sum up, CS has shown to be suitable to produce metallic and ceramic coatings for joint applications, especially those dealing with materials that are sensitive to the temperature and oxygen. The non-microstructural changes from the feedstock powder to the coatings leads to a big advantage in CS to obtain customized coatings.

Download or read book Cold Spray in the Realm of Additive Manufacturing written by Sunil Pathak and published by Springer Nature. This book was released on 2020-05-12 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book sheds light on the development of the cold spray process in applications of additive manufacturing (AM) and repair/remanufacturing engineering. It covers the process fundamentals of different cold spray techniques, namely low pressure cold spray and high pressure cold spray process. Bonding mechanism and powder substrate interface are an important part of the book. The chapters present the recent developments in materials used in cold spraying for AM and various coating applications. The latest research in this area as well as possible avenues of future research are also highlighted as a way to encourage the researchers.

Download or read book Functional Coatings for Biomedical Energy and Environmental Applications written by Raj K. Arya and published by John Wiley & Sons. This book was released on 2024-10-22 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand functional coatings and their role in three key industries of the future Functional coatings play a huge range of roles in industries from automotive to aerospace to electronic and beyond. They offer protection, performance enhancement, corrosion resistance, self-cleaning properties, and more. Recent developments in the field have allowed for ever more precise optimization of functional coatings, with the result that demand for these key tools is only likely to increase. Functional Coatings for Biomedical, Energy, and Environmental Applications offers a comprehensive overview of these coatings and their applications in three explosively productive industries. A team of expert contributors provides chapters analyzing the latest developments in this growing area of production, with a particular focus on the dynamic relationship between functional coatings and their many applications. The result is an interdisciplinary text which will serve as an essential resource for researchers and industry professionals worldwide. Readers will also find: Analysis of functional coatings for dental implants, pool boilers, solar cells, and many more Detailed discussion of coating properties including superhydrophobicity, self-cleaning, controlled drug release, and more Key contributions to the great environmental challenges of the twenty-first century This book is a must-own for researchers in chemistry, engineering, energy, materials science, and more, as well as for industry professionals working with coating and other aspects of research and development in biomedical, energy, or environmental industries.

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 Advanced Coating Materials written by Liang Li and published by John Wiley & Sons. This book was released on 2018-11-15 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive, yet practical source of reference, and excellent foundation for comparing the properties and performance of coatings and selecting the most suitable materials based on specific service needs and environmental factors. Coating technology has developed significant techniques for protecting existing infrastructure from corrosion and erosion, maintaining and enhancing the performance of equipment, and provided novel functions such as smart coatings greatly benefiting the medical device, energy, automotive and construction industries. The mechanisms, usage, and manipulation of cutting-edge coating methods are the focus of this book. Not only are the working mechanisms of coating materials explored in great detail, but also craft designs for further optimization of more uniform, safe, stable, and scalable coatings. A group of leading experts in different coating technologies demonstrate their main applications, identify the key bottlenecks, and outline future prospects. Advanced Coating Materials broadly covers the coating techniques, including cold spray, plasma vapor deposition, chemical vapor deposition, sol–gel method, etc., and their significant applications in microreactor technology, super(de)wetting, joint implants, electrocatalyst, etc. Numerous kinds of coating structures are addressed, including nanosize particles, biomimicry structures, metals and complexed materials, along with the environmental and human compatible biopolymers resulting from microbial activities. This state-of-the-art book is divided into three parts: (1) Materials and Methods: Design and Fabrication, (2) Coating Materials: Nanotechnology, and (3) Advanced Coating Technology and Applications.

Download or read book Bioactive Antibacterial Composite Coatings Deposited By Cold Spray written by Kiran Judd and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tissue damage, loosening of implants, and the infection of the body are some of the most common complications that arise following surgical procedures. In dental and orthopedic medical implants infections are largely caused by the adhesion and growth of bacteria on the implant surface. Additionally, anatomical differences between the surrounding tissue/bone and the implant material can cause further complications. The usage of biomaterial-based implant coatings has been fundamental to the application of medical implants/devices and have improved mechanical properties. Successful implants must have favorable mechanical properties/wear resistance, provide strong biocompatibility/bioactivity, and display antibacterial properties. To date, bioactive coatings have generally been deposited using thermal spray methods such as plasma spray; however, this method of deposition has led to the melting and degradation of novel bioactive properties of hydroxyapatite (HA) as well as poor coating adhesion. This study discusses a novel approach of depositing biocompatible, bioactive, and antibacterial coatings well below their melting point using the cold spray process. The cold spray process was used to deposit composite powders with 70 wt% titanium (Ti), 20 wt% hydroxyapatite (HA), and 10 wt% chitosan (CS) onto aluminum 6061 (Al6061) substrates. The effect of process parameters was examined and the goal was to achieve antibacterial well-bonded coatings. The biofunctionality and corrosion resistance was investigated by a bacterial cellular assay and corrosion testing in the simulated body fluid (SBF) Hank's Balanced Salt Solution (HBSS). These tests compared the bacterial and corrosion resistance of composite coatings with commonly used implant substrate materials. The preliminary results indicate the phase composition of the Ti and HA remained the same before and after coating deposition. However, it is inconclusive whether CS particles remained in the same phase following deposition. Porous Ti/HA/CS coatings were obtained with more than double the porosity of Ti/HA coatings. Microstructural characterization and phase analysis of feedstock powders and as-deposited coatings was carried out using Field Emission Scanning Electron Microscope/Energy-Dispersive X-ray Spectroscopy (FESEM/EDS) and X-ray Powder Diffraction (XRD). The addition of the CS in the coating offered no improved antibacterial properties when compared to plain Al6061, 316 stainless steel (SS316), and titanium-6 aluminum-4 vanadium (Ti-6Al-4V) substrate samples. The reason for this lack of protection is still being investigated and could be attributed to a change in phase during the application or an insignificant amount of CS depositing.

Download or read book Modern Cold Spray written by Julio Villafuerte and published by Springer. This book was released on 2015-08-24 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the current state of the art of the novel cold spray process. Cold spray is a solid state metal consolidation process, which allows engineers to tailor surface and shape properties by optimizing process parameters, powder characteristics and substrate conditions for a wide variety of applications that are difficult or impossible by other techniques. Readers will benefit from this book's coverage of the commercial evolution of cold spray since the 1980's and will gain a practical understanding of what the technology has to offer.

Download or read book Advances in Cold Spray written by Victor K. Champagne and published by Woodhead Publishing. This book was released on 2023-06-23 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Cold Spray: A Coating Deposition and Additive Manufacturing Process, Second Edition reviews the fundamental processes and recent advances made in the field of cold spray. This fully updated edition now includes a special chapter on Cold Spray Additive Manufacturing, along with advancements in impact modeling and simulation that allow a better understanding of the cold spray bonding mechanisms, powder synthesis and predictive modeling to improve the engineering of cold spray powders. In addition, materials properties data is a backbone of this book because the advanced cold spray materials have proven to be comparable to wrought and enable cold spray to be incorporated into structural applications for near-net shape parts production as well as for repair. Finally, numerous modern applications of cold spray representative of the Electronics, Medical, Petrochemical, Nuclear, Aerospace, Automotive, and Additive Manufacturing industries are presented. - Provides information on the fundamentals of cold spray as an additive manufacturing process - Presents the significant increase in properties of cold spray materials achieved to date - Discusses recent advancements in cold spray powders, equipment, automation, modeling and simulation and the expansion of applications

Download or read book Cold Spray Materials Deposition of Coatings for Applications in Corrosive Environments written by Benjamin R. Maier and published by . This book was released on 2015 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Encyclopedia of Biomedical Engineering written by and published by Elsevier. This book was released on 2018-09-01 with total page 2069 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Biomedical Engineering, Three Volume Set is a unique source for rapidly evolving updates on topics that are at the interface of the biological sciences and engineering. Biomaterials, biomedical devices and techniques play a significant role in improving the quality of health care in the developed world. The book covers an extensive range of topics related to biomedical engineering, including biomaterials, sensors, medical devices, imaging modalities and imaging processing. In addition, applications of biomedical engineering, advances in cardiology, drug delivery, gene therapy, orthopedics, ophthalmology, sensing and tissue engineering are explored. This important reference work serves many groups working at the interface of the biological sciences and engineering, including engineering students, biological science students, clinicians, and industrial researchers. Provides students with a concise description of the technologies at the interface of the biological sciences and engineering Covers all aspects of biomedical engineering, also incorporating perspectives from experts working within the domains of biomedicine, medical engineering, biology, chemistry, physics, electrical engineering, and more Contains reputable, multidisciplinary content from domain experts Presents a ‘one-stop’ resource for access to information written by world-leading scholars in the field

Download or read book Cold Spray Coatings Fundamentals and Applications written by Elsevier Science & Technology Books and published by Academic Press. This book was released on 2016-06-13 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Engineering and Technology for Biomedical Implants written by Yoshiki Oshida and published by Momentum Press. This book was released on 2014-04-15 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book synthesizes a wide range of interdisciplinary literature to provide the state-of-the art of biomedical implants. It discusses materials and explains the three basic requirements for implant success from a surface engineering perspective: biological compatibility, biomechanical compatibility, morphological compatibility. Biomedical, mechanical, and materials engineers will find this book indispensable for understanding proper treatment of implant surfaces in order to achieve clinical success. Highlights include: • Coverage of surface engineering of polymer, metallic, ceramic and composite implant materials; • Coverage of chemical, mechanical, physical, thermal, and combined surface modification technologies; • Explanations of interfacial reaction between vital tissue and non-vital implant surface; and • Methodologies and technologies for modification of surface layer/zone to promote the osteo-integration, the ultimate success for biomedical implants in both dental and medical practice.

Download or read book Cold Spray Coatings written by G. Sundararajan and published by Academic Press. This book was released on 2016-06-13 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold Spray Coatings

Download or read book Engineered Self lubricating Coatings Utilizing Cold Spray Technology written by Lisa M. Stark and published by . This book was released on 2010 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coatings for Biomedical Applications written by Mike Driver and published by Elsevier. This book was released on 2012-02-22 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biomaterials sector is rapidly expanding and significant advances have been made in the technology of biomedical coatings and materials, which provide a means to improve the wear of joints, change the biological interaction between implant and host and combine the properties of various materials to improve device performance. Coatings for biomedical applications provides an extensive review of coating types and surface modifications for biomedical applications.The first part of the book explores a range of coating types and their biomedical applications. Chapters look at hydrophilic, mineral and pyrolytic carbon coatings in and ex vivo orthopaedic applications and finally at surface modification and preparation techniques. Part two presents case studies of orthopaedic and ophthalmic coatings, and biomedical applications including vascular stents, cardiopulomonary by-pass equipment and ventricular assist devices.With its clear structure and comprehensive review of research, Coatings for biomedical applications is a valuable resource to researchers, scientists and engineers in the biomedical industry. It will also benefit anyone studying or working within the biomedical sector, particularly those specialising in biomedical coatings. - Provides an extensive review of coating types and surface modifications for biomedical applications - Chapters look at hydrophilic coatings for biomedical applications in and ex vivo, mineral coatings for orthopaedic applications, pyrolytic carbon coating and other commonly-used biomedical coatings - Presents case studies of orthopaedic and ophthalmic coatings, and biomedical applications including vascular stents, cardiopulomonary by-pass equipment and ventricular assist devices

Download or read book Proceedings of the International Conference on Advances in Surface Treatment Research Applications ASTRA written by and published by . This book was released on 2004 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Materials for the Restoration and Reconstruction of Dental Functions written by Jianxun Ding and published by Frontiers Media SA. This book was released on 2021-10-21 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: