Advances in metals and alloys for joint replacement
TL;DR: In this article, the authors focus solely on advances in metals, highlighting the current and emerging technologies in metals processing, metal surface treatment, and integration of metals into hybrid materials systems.
About: This article is published in Progress in Materials Science.The article was published on 2017-07-01. It has received 217 citations till now. The article focuses on the topics: Joint replacement.
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TL;DR: A review of 3D and 4D printing technologies available for use in dentistry can be found in this paper, together with a critique on the materials available for 3D/4D printing.
121 citations
TL;DR: In this article, a balanced solution for the stress shielding and the poor osseointegration in titanium implants is proposed, with a porosity of 100-200μm of pore size employing space-holder technique (50-vol% NH4HCO3, 800-MPa at 1250°C during 2h under high vacuum conditions), obtaining a good equilibrium between stiffness and mechanical resistance.
Abstract: The stress shielding and the poor osseointegration in titanium implants are still problems to be resolved. In this context, this work proposes a balanced solution. Titanium samples were fabricated, with a porosity of 100–200 μm of pore size employing space-holder technique (50 vol% NH4HCO3, 800 MPa at 1250 °C during 2 h under high vacuum conditions), obtaining a good equilibrium between stiffness and mechanical resistance. The porous titanium substrates were coated with hydroxyapatite, obtained by sol-gel technique: immersion, dried at 80 °C and heat treatment at 450 °C during 5 h under vacuum conditions. Phases, surface morphology and interfacial microstructure of the transverse section were analyzed by Micro-Computed Tomography, SEM and confocal laser, as well as the infiltration capability of the coating into the metallic substrate pores. The FTIR and XRD showed the crystallinity of the phases and the chemical composition homogeneity of the coating. The size and interconnected pores obtained allow the infiltration of hydroxyapatite (HA), possible bone ingrowth and osseointegration. The scratch resistance of the coating corroborated a good adherence to the porous metallic substrate. The coated titanium samples have a biomechanical and biofunctional equilibrium, as well as a potential use in biomedical applications (partial substitution of bone tissue).
110 citations
TL;DR: In this paper, a correlation between LED value and density, surface quality, micro-structural features and hardness of SLM parts was defined, and the final goal was to identify, for the biomedical Co-28Cr-6Mo alloy, the optimal LED window to be considered in order to maximize the overall quality of the parts.
97 citations
TL;DR: Abrasive jet machining (AJM) is a manufacturing technology based on erosion localization and intensification as discussed by the authors, which has a progressively important influence on the machining technology market.
Abstract: Abrasive jet machining (AJM) is a manufacturing technology based on erosion localization and intensification AJM has a progressively important influence on the machining technology market Over the past 20 years, there has been an exponential growth in the number of papers that discuss AJM Various innovations and process developments such as intermittent, submerged, thermally assisted and other jet conditions were proposed This paper examines AJM’s technological advantages and the variety of machining operations in different industries where AJM is utilized Particular attention is devoted to the micro-texturing capabilities of powder blasting and its application in tribology New evidence of ductile and brittle material removal mechanisms are reviewed together with recently discovered elastic removal mode The effects of hydraulic, abrasive and machining parameters on particles kinetic energy, machined surface roughness and footprint size are described in detail Nozzle wear has a strong dependence on nozzle materials, its geometry, particles size, hardness, and flow rate The trend of AJM development is a shift from macro to micro scale Improvements in micro-machining resolution, process controlling and erosion prediction are current challenges facing AJM
92 citations
TL;DR: In this paper, the authors present a review of the historical and latest research developments and integrated applications of waterjet machining in the domains of mechanism and performances, which covers a lot of key aspects such as water jet machining optimization, dynamic simulation and process monitoring of machining process.
Abstract: Waterjet machining has attracted great attention in the conditions of hard-to-machine materials, microstructures, or complicated industrial components, and it has become well-established in all major areas of theoretical researches and already been found across the broad spectrum of technical application areas especially in the specific sectors of scientific frontiers, including the mechanical precision component, advanced functional material, intelligent automotive engineering, aerospace equipment, renewable energy science, leading medical instruments, etc. This paper reviews the historical and latest research developments and integrated applications of waterjet machining in the domains of mechanism and performances, which covers a lot of key aspects such as waterjet machining optimization, dynamic simulation and process monitoring of machining process, and the influence mechanism of waterjet machining as well. Its machining mechanism, performance capability, functional advantages, and inherent disadvantages are characterized and assessed in detail, so that the integrated applications of multifield-assisted waterjet machining can be introduced and focused thereafter. Finally, various future development prospects in all the abovementioned aspects of waterjet machining are discussed systematically and explored subsequently, which contribute to the acquirement of a series of comprehensive conclusions. This review can be used as suitable and effective tools to study and summarize the complicated correlations between waterjet machining mechanism and its actual working performances in different environmental conditions; therefore, this proposed investigation facilitates the precision manufacture or characteristic improvements of industrial product with higher efficiency and better quality in return.
63 citations
References
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TL;DR: New fabrication techniques, such as solid-free form fabrication, can potentially be used to generate scaffolds with morphological and mechanical properties more selectively designed to meet the specificity of bone-repair needs.
5,470 citations
Book•
11 Oct 1996
TL;DR: A. Ratner, Biomaterials Science: An Interdisciplinary Endeavor, Materials Science and Engineering--Properties of Materials: J.E. Schoen, and R.J.Ratner, Surface Properties of Materials, and Application of Materials in Medicine and Dentistry.
Abstract: B.D. Ratner, Biomaterials Science: An Interdisciplinary Endeavor. Materials Science and Engineering--Properties of Materials: J.E. Lemons, Introduction. F.W. Cooke, Bulk Properties of Materials. B.D. Ratner, Surface Properties of Materials. Classes of Materials Used in Medicine: A.S. Hoffman, Introduction. J.B. Brunski, Metals. S.A. Visser, R.W. Hergenrother, and S.L. Cooper, Polymers. N.A. Peppas, Hydrogels. J. Kohnand R. Langer, Bioresorbable and Bioerodible Materials. L.L. Hench, Ceramics, Glasses, and Glass Ceramics. I.V. Yannas, Natural Materials. H. Alexander, Composites. B.D. Ratner and A.S. Hoffman, Thin Films, Grafts, and Coatings. S.W. Shalaby, Fabrics. A.S. Hoffman, Biologically Functional Materials. Biology, Biochemistry, and Medicine--Some Background Concepts: B.D. Ratner, Introduction. T.A. Horbett, Proteins: Structure, Properties, and Adsorption to Surfaces. J.M. Schakenraad, Cells: Their Surfaces and Interactions with Materials. F.J. Schoen, Tissues. Host Reactions to Biomaterials and Their Evaluations: F.J. Schoen, Introduction. J.M. Anderson, Inflammation, Wound Healing, and the Foreign Body Response. R.J. Johnson, Immunology and the Complement System. K. Merritt, Systemic Toxicity and Hypersensitivity. S.R. Hanson and L.A. Harker, Blood Coagulation and Blood-Materials Interaction. F.J.Schoen, Tumorigenesis and Biomaterials. A.G. Gristina and P.T. Naylor, Implant-Associated Infection. Testing Biomaterials: B.D. Ratner, Introduction. S.J. Northup, In Vitro Assessment of Tissue Compatibility. M. Spector and P.A. Lalor, In Vivo Assessment of Tissue Compatibility. S. Hanson and B.D. Ratner, Testing of Blood-Material Interactions. B.H. Vale, J.E. Willson, and S.M. Niemi, Animal Models. Degradation of Materials in the Biological Environment: B.D. Ratner, Introduction. A.J. Coury, Chemical and Biochemical Degradation of Polymers. D.F. Williams and R.L. Williams, Degradative Effects of the Biological Environment on Metals and Ceramics. C.R. McMillin, Mechanical Breakdown in the Biological Environment. Y. Pathak, F.J. Schoen, and R.J. Levy, Pathologic Calcification of Biomaterials. Application of Materials in Medicine and Dentistry: J.E. Lemons, Introduction. D. Didisheim and J.T. Watson, Cardiovascular Applications. S.W. Kim, Nonthrombogenic Treatments and Strategies. J.E. Lemons, Dental Implants. D.C. Smith, Adhesives and Sealants. M.F. Refojo, Ophthalmologic Applications. J.L. Katz, Orthopedic Applications. J. Heller, Drug Delivery Systems. D. Goupil, Sutures. J.B. Kane, R.G. Tompkins, M.L. Yarmush, and J.F. Burke, Burn Dressings. L.S. Robblee and J.D. Sweeney, Bioelectrodes. P. Yager, Biomedical Sensors and Biosensors. Artificial Organs: F.J. Schoen, Introduction. K.D. Murray and D.B. Olsen, Implantable Pneumatic Artificial Hearts. P. Malchesky, Extracorporeal Artificial Organs. Practical Aspects of Biomaterials--Implants and Devices: F.J. Schoen, Introduction. J.B. Kowalski and R.F. Morrissey, Sterilization of Implants. L.M. Graham, D. Whittlesey, and B. Bevacqua, Cardiovascular Implantation. A.N. Cranin, M. Klein, and A. Sirakian, Dental Implantation. S.A. Obstbaum, Ophthalmic Implantation. A.E. Hoffman, Implant and Device Failure. B.D. Ratner, Correlations of Material Surface Properties with Biological Responses. J.M. Anderson, Implant Retrieval and Evaluation. New Products and Standards: J.E. Lemons, Introduction. S.A. Brown, Voluntary Consensus Standards. N.B. Mateo, Product Development and Regulation. B. Ratner, Perspectives and Possibilities in Biomaterials Science. Appendix: S. Slack, Properties of Biological Fluids. Subject Index.
4,194 citations
TL;DR: In this paper, the influence of alloy chemistry, thermomechanical processing and surface condition on these properties is discussed and various surface modification techniques to achieve superior biocompatibility, higher wear and corrosion resistance.
4,113 citations
TL;DR: This review summarizes the main advances published over the last 15 years, outlining the synthesis, biodegradability and biomedical applications ofBiodegradable synthetic and natural polymers.
3,801 citations
TL;DR: A review of the properties, biological performance, challenges and future directions of magnesium-based biomaterials can be found in this paper, where the authors explore the properties and challenges of magnesium biomaterial.
3,757 citations