Article
Chemistry, Physical
Tarik Aydogmus, Dana Kareem Hameed Palani, Fevzi Kelen
Summary: Ti74Nb26 alloys with porosities in the range of 45-68% were successfully produced using Mg space holder technique combined with hot pressing and sintering processes. The mechanical properties of the alloys improved with decreasing porosity and were suitable for various bone replacement applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Biomaterials
Mohammad Alqattan, Linda Peters, Yousef Alshammari, Fei Yang, Leandro Bolzoni
Summary: By adding manganese and copper, new titanium alloys have been developed in this study to reduce manufacturing costs and introduce antibacterial response, leading to enhanced mechanical performance and potential use as permanent medical implants.
REGENERATIVE BIOMATERIALS
(2021)
Article
Materials Science, Multidisciplinary
M. A. Hussein, M. A. Azeem, A. Madhan Kumar, S. Saravanan, N. Ankah, A. A. Sorour
Summary: This study aims to design and process a low elastic modulus near -b Ti-30Nb-3Ag at% (TNA) alloy with enhanced corrosion and antibacterial characteristics for bioimplant uses. The TNA alloy was processed using powder metallurgy and designed using molybdenum equivalency and the d-electron alloy design method. The results showed that the TNA alloy exhibited improved corrosion resistance and antibacterial properties compared to Ti6Al4V alloy, making it a potential bioimplant material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
J. Chavez, O. Jimenez, D. Bravo-Barcenas, L. Olmos, F. Alvarado-Hernandez, M. A. Gonzalez, A. Bedolla-Jacuinde, M. Flores
Summary: The corrosion and tribocorrosion behavior of Ti6Al4V/xTiN composites fabricated by solid-state sintering were investigated. The addition of TiN particles resulted in increased hardness and corrosion resistance of the composites, but also decreased the corrosion resistance.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Ozlem Canpolat, Aykut Canakci, Fatih Erdemir
Summary: The performance of biomedical implants has been the focus of research. Functionally graded materials (FGM) have the potential to improve implant performance by mimicking bone structure. In this study, SS316L/Al2O3 FGM was successfully fabricated using the powder metallurgy technique, and its microstructure, corrosion resistance, and mechanical and bioactivity properties were investigated.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Nicolas Soro, Erin G. Brodie, Abdalla Abdal-hay, Aya Q. Alali, Damon Kent, Matthew S. Dargusch
Summary: In this study, 3D lattices designed with gyroid, diamond, and Schwarz primitive minimal surfaces are fabricated using laser powder-bed fusion and a blend of titanium-tantalum powder. The processability, compressive mechanical properties, and in vitro biological properties of the dense and lattice samples are evaluated. The results show that the Ti-25Ta lattices exhibit higher ductility and absence of toxic elements compared to the conventional Ti-6Al-4V alloy. The designs also demonstrate advantageous mechanical properties and higher elastic admissible strains for bone implants compared to conventional lattices.
MATERIALS & DESIGN
(2022)
Article
Engineering, Biomedical
Y. Alshammari, F. Yang, L. Bolzoni
Summary: Ti-based ternary alloys Ti-xCu-2.5Al obtained by powder metallurgy methods show increasing tensile strength and Vickers hardness values with increasing Cu content, but a decrease in elongation. A higher content of beta-stabiliser leads to the formation of a greater number of spherically shaped pores and a refined lamellar structure, impacting the mechanical properties of the materials.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Alexandre Brillon, Justo Garcia, Fanny Riallant, Christian Garnier, Anne Joulain, Yongfeng Lu, Jean-Francois Silvain
Summary: Aluminum matrix composites with boron carbide reinforcements were fabricated using solid state powder metallurgy and hot-pressing process. The incorporation of B4C particles up to 12% increased the hardness and strain hardening threshold of the composite material, but decreased ductility. The thermal conductivity and coefficient of thermal expansion also decreased with an increase in B4C volume fraction.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Chengshang Zhou, Fangrui Lin, Pei Sun, Zoujun Chen, Zhongyuan Duan, Xianzhi Zhu, Yong Liu, Zhigang Zak Fang
Summary: This paper introduces a novel approach called constrained hydrogenation assisted densification (CHAD) for improving the density of powder metallurgy Ti alloys. The results demonstrate that CHAD can effectively reduce or eliminate residual porosity in Ti alloys and improve their tensile properties. This method is considered as an efficient and cost-effective technique for manufacturing high-density Ti alloys.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Jialong Kang, Yaoran Cui, Jingjing Song, Hongxia Mao, Guibao Qiu, Zhenyun Tian, Feng Zhang
Summary: The use of SiC as a reinforcing agent in porous titanium materials can significantly improve their mechanical properties, with the compressive strength reaching its peak when the SiC content is 3wt.%. This study demonstrates that the addition of SiC enhances the densification, sintering properties, hardness, and strength of porous titanium.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Materials Science, Multidisciplinary
Dhyah Annur, Ika Kartika, Sugeng Supriadi, Bambang Suharno
Summary: The use of titanium in biomedical implants is due to its excellent mechanical properties and biocompatibility. Manufacturing titanium is challenging due to high temperature requirements. Spark plasma sintering (SPS) is an advance rapid sintering technique used to produce bulk and porous titanium for biomedical applications. The development of titanium alloys prepared by SPS includes bulk and porous titanium for biomedical implants, focusing on improving biocompatibility and mechanical properties, as well as studying low toxicity titanium alloys. SPN can improve the mechanical properties of titanium alloys, while porous titanium alloys with lower elastic modulus are gaining attention for implant materials.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Luisa M. Rodriguez-Albelo, Paula Navarro, Francisco J. Gotor, Julio E. de la Rosa, Danaysi Mena, Francisco J. Garcia-Garcia, Ana M. Beltran, Ana Alcudia, Yadir Torres
Summary: This article presents the use of 13-Titanium alloys to fabricate metal implants with Young's modulus resembling bone tissues as an alternative to commercially pure titanium or a-Titanium alloys. Porous samples were fabricated by loose sintering and compared to samples manufactured at 1000 MPa. The physicochemical and microstructural properties of the Ti35Nb7Zr5Ta alloy were characterized, and the tribo-mechanical and bio-functional behavior of the samples were evaluated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
M. Alqattan, Y. Alshammari, F. Yang, L. Peters, L. Bolzoni
Summary: This study successfully developed Ti-Cu-Mn alloys with antibacterial capability through powder metallurgy method, achieving performance comparable to other biomedical Ti alloys. The addition rates of Cu and Mn impact the strength, hardness, and antibacterial capability of the material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Coatings & Films
Juliana Gaviria, Ana Alcudia, Belen Begines, Ana Maria Beltran, Junes Villarraga, Rocio Moriche, Jose Antonio Rodriguez-Ortiz, Yadir Torres
Summary: Ti implants are highly biocompatible and allow orderly bone growth, but a small percentage may fail due to poor osseointegration and bacterial infections. Silver nanoparticles, when immobilized on a surface, have been shown to damage bacterial cells through prolonged release of Ag+ ions. In this study, two methods for synthesizing silver nanoparticles were proposed and their deposition on porous Ti substrates was evaluated for antibacterial behavior. Preliminary results showed the presence of inhibitory halos, particularly in substrates with larger pores.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Fangxia Xie, Jiabing Huang, Hao Yang, Xueming He
Summary: The Ti-10Mo/xHA composites fabricated by powder metallurgy showed excellent microstructural evolution, mechanical properties, and biological activity. As the HA content increased, the elastic modulus increased while the compressive strength decreased, and excessive HA content resulted in an increase in microcracks and pores.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Ricardo Chavez-Vasconez, Sheila Lascano, Sergio Sauceda, Mauricio Reyes-Valenzuela, Christopher Salvo, Ramalinga Viswanathan Mangalaraja, Francisco Jose Gotor, Cristina Arevalo, Yadir Torres
Summary: Commercially pure titanium grade IV with a bimodal microstructure is a promising material for biomedical implants. The influence of processing parameters on its physical, microstructural, and mechanical properties was investigated. It was found that a bimodal microstructure and a porous structure could be achieved by blending powder particles with different sizes and using the space-holder technique.
Article
Chemistry, Physical
Paula Navarro, Alberto Olmo, Merce Giner, Marleny Rodriguez-Albelo, Angel Rodriguez, Yadir Torres
Summary: This study investigates a non-invasive alternative method, electrical impedance spectroscopy, for characterizing the chemical composition and surface topography of titanium implants. The effects of femtosecond laser treatment and cell culture on titanium discs are also examined. Results show that this measurement technique has the potential to quantitatively analyze porosity and surface modification effects.
Article
Materials Science, Multidisciplinary
Ana M. Beltran, Paloma Trueba, Flora Borie, Ana Alcudia, Belen Begines, Jose A. Rodriguez-Ortiz, Yadir Torres
Summary: In this study, porous titanium samples were optimized to improve the performance of implants by preventing bone resorption and enhancing osseointegration. The results showed a favorable balance in terms of biomechanics and biofunctionality, making these implants potentially suitable for replacing small tumors in cortical bone tissues.
Article
Agronomy
Manuel Merinero, Ana Alcudia, Belen Begines, Guillermo Martinez, Maria Jesus Martin-Valero, Jesus Alberto Perez-Romero, Enrique Mateos-Naranjo, Susana Redondo-Gomez, Salvadora Navarro-Torre, Yadir Torres, Francisco Merchan, Ignacio D. Rodriguez-Llorente, Eloisa Pajuelo
Summary: In this study, a new approach using plant growth-promoting rhizobacterium and organometallic Fe-containing polymeric nanoparticles was used to increase mineral nutrients in wheat. The results showed that using FeNPs alone can effectively enhance the biofortification of iron in wheat.
Article
Nanoscience & Nanotechnology
Belen Begines, Cristina Arevalo, Carlos Romero, Zoya Hadzhieva, Aldo R. Boccaccini, Yadir Torres
Summary: This research investigates the fabrication of biphasic composite implants using porous pure Ti as a bone replacement and composites based on gelatin, alginate, and bioactive glass as a soft tissue coating. The microstructure, degradation rates, biofunctionality, and wear behavior of the composites were studied to determine the best coating. The experiments showed that a substrate with a size range distribution of 200-355 μm had the best micromechanical balance, and a composite containing 50% alginate and 50% gelatin had higher elastic recovery, making it a suitable coating for joint areas.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Infectious Diseases
Maria Perez-Aranda, Eloisa Pajuelo, Salvadora Navarro-Torre, Patricia Perez-Palacios, Belen Begines, Ignacio D. Rodriguez-Llorente, Yadir Torres, Ana Alcudia
Summary: The spread of antibiotic resistance is a major health concern, so the search for alternative antimicrobial substances is crucial. In this study, 4,4'-dihydroxy-azobenzene (DHAB) was tested for its potential as an antimicrobial agent against Staphylococcus aureus and Staphylococcus pseudintermedius. DHAB showed inhibitory effects on growth and biofilm formation of both bacteria.
Article
Engineering, Biomedical
Ana Civantos, Andrea Mesa-Restrepo, Yadir Torres, Akshath R. Shetty, Ming Kit Cheng, Camilo Jaramillo-Correa, Teresa Aditya, Jean Paul Allain
Summary: Chemical and physical surface modification methods, such as direct irradiation synthesis (DIS), have been successfully used to address stress shielding and osseointegration challenges in bone regeneration. DIS generates self-organized nanopatterns on the surface of materials, enhancing their mechanical properties and topography for better osseointegration. By adjusting the volume percentage of spacer NaCl particles, the porosity and morphology of the material can be controlled. These nanoscale features are biocompatible and promote cell differentiation and mineralization, making them promising for bone tissue engineering.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2023)
Article
Materials Science, Multidisciplinary
Eduin I. Gonzalez-Castillo, Yadir Torres, Francisco J. J. Gonzalez, Arturo E. E. Aguilar-Rabiela, Peter S. S. Shuttleworth, Gary J. J. Ellis, Aldo R. R. Boccaccini
Summary: The thermal stability, mechanical properties, and scratch resistance of PEEK/RGO nanocomposite coatings were analyzed and discussed based on their nanosheet content and microstructure. The addition of RGO slightly affected the thermal stability of the coatings, but did not limit PEEK processing. The presence of RGO influenced the morphology, crystalline phase, and near-to-surface mechanical properties of the coatings, as well as their scratch damage mechanism. The comprehensive characterization indicated that PEEK/RGO coatings are suitable for applications requiring tribo-mechanical resistance.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ernesto J. Delgado-Pujol, Ana Alcudia, Amir A. Elhadad, Luisa Marleny Rodriguez-Albelo, Paula Navarro, Belen Begines, Yadir Torres
Summary: Tooth loss commonly occurs in patients with dental cavities, periodontal diseases, tumors, and substance abuse. Dental implants have become the main treatment option for tooth loss. This study proposes a solution to overcome the limitations of dental implants through the use of porous beta-titanium substrates with varying porosity and pore diameters. The mechanical characteristics and antimicrobial behavior of the infiltrated substrates were successfully characterized.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Luisa M. Rodriguez-Albelo, Paula Navarro, Francisco J. Gotor, Julio E. de la Rosa, Danaysi Mena, Francisco J. Garcia-Garcia, Ana M. Beltran, Ana Alcudia, Yadir Torres
Summary: This article presents the use of 13-Titanium alloys to fabricate metal implants with Young's modulus resembling bone tissues as an alternative to commercially pure titanium or a-Titanium alloys. Porous samples were fabricated by loose sintering and compared to samples manufactured at 1000 MPa. The physicochemical and microstructural properties of the Ti35Nb7Zr5Ta alloy were characterized, and the tribo-mechanical and bio-functional behavior of the samples were evaluated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biochemistry & Molecular Biology
Guillermo Martinez, Belen Begines, Eloisa Pajuelo, Juan Vazquez, Luisa Marleny Rodriguez-Albelo, Davide Cofini, Yadir Torres, Ana Alcudia
Summary: This research proposes a synergistic approach to enhance implant performance by using porous Ti substrates and a biodegradable polymer coating to reduce material mismatch and bacterial adhesion, improving implant-bone integration.
Article
Chemistry, Physical
Juan Carlos Sanchez-Lopez, Marleny Rodriguez-Albelo, Miriam Sanchez-Perez, Vanda Godinho, Carmen Lopez-Santos, Yadir Torres
Summary: This study aims to improve the biomedical performance of commercially pure titanium by coating it with 1-3 μm of Ti6Al4V alloy using DC-pulsed or high-power impulse magnetron sputtering (HiPIMS) technique. The titanium-coated implants with controlled nano-roughness exhibit enhanced mechanical properties and hydrophobicity. The surface modification of titanium implants through HiPIMS process proves to be an effective strategy for achieving biomedical requirements and functionality.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
C. Garcia-Cabezon, V. Godinho, C. Perez-Gonzalez, Y. Torres, F. Martin-Pedrosa
Summary: This study proposes an innovative strategy combining powder metallurgy based space-holder (SH) technique and electropolymerization to prepare porous biocompatible Ti substrates coated with PPy-AgNPs composite conductive polymers. The coated substrates show excellent adhesion and corrosion resistance, as well as enhanced antibacterial activity. This strategy has significant potential for the substitution of small damaged bone tissues, such as in tumors.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ricardo Chavez-Vasconez, Cristina Arevalo, Yadir Torres, Mauricio Reyes-Valenzuela, Sergio Sauceda, Christopher Salvo, Ramalinga Viswanathan Mangalaraja, Isabel Montealegre, Eva M. Perez-Soriano, Sheila Lascano
Summary: This study investigates the interplay between processing parameters, microstructural attributes, and the tribo-mechanical performance of titanium grade 4 biomedical implants. The study finds that a sample composed of 75 wt% milled powder, 10-hour milling duration, and 60 vol% NaCl exhibits superior biomechanical equilibrium and promising application prospects.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Amir A. Elhadad, Ana Rosa-Sainz, Raquel Canete, Estela Peralta, Belen Begines, Mario Balbuena, Ana Alcudia, Y. Torres
Summary: This article explores recent advancements and emerging trends in 3D printing from a novel multidisciplinary perspective. It provides an overview of various 3D printing techniques and their applications, with a focus on materials such as composites, hybrids, and smart materials. The article also discusses the latest developments in 4D bioprinting technology and outlines present challenges and future regulations.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2023)
