Article
Engineering, Chemical
Shunyuan Xiao, Shaofu Li, Xuemeng Gan, Yafeng Yang
Summary: An electrostatic self-assembly strategy combining surface functional modification and solid-liquid fluidized bed powder coating treatment was proposed to synthesize a novel LaB6-coated Ti composite powder with excellent O-scavenging efficiency and high utilization rate. The as-sintered Ti samples with low LaB6 coating-content showed significantly improved tensile strength and elongation.
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
Yu Pan, Jinshan Zhang, Jianzhuo Sun, Yanjun Liu, Ce Zhang, Rui Li, Fan Kuang, Xinxin Wu, Xin Lu
Summary: The challenge of producing high-ductility titanium materials using inexpensive high-oxygen HDH Ti powder is addressed by incorporating CaB6 oxygen-scavenger. The addition of CaB6 improves the tensile ductility and strength of Ti material by increasing deformation twining activity, grain refinement, and the formation of TiB and CaTiO3 reinforcements. This work provides an effective method for fabricating high-performance Ti material.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
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)
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
Chemistry, Physical
Takuma Teramae, Takayuki Tanaka, Mizuki Fukuo, Kazuki Shitara, Junko Umeda, Shufeng Li, Abdulaziz Alhazaa, Katsuyoshi Kondoh
Summary: Commercial pure Ti alloys are often used in biomedical applications, but they need to be strengthened by adding alloying elements. Ti-Fe alloys modified with Zr were investigated in this study to produce high-strength, ductile, and biocompatible alloys. The addition of Zr solid solution increased lattice constants and refined grain size, leading to improved mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Dhyah Annur, Ika Kartika, Toto Sudiro, Sugeng Supriadi, Bambang Suharno
Summary: This study produced porous titanium using the spark plasma sintering (SPS) method at temperatures ranging from 600 to 800 degrees C. The porous titanium had a porosity value of 4.2-27.5% and an elastic modulus of 13.6-24.4 GPa, which could match the elastic modulus of human bone. However, in vitro studies showed that the porous titanium prepared through SPS at 600 degrees C had lower cell viability compared to that prepared by conventional powder metallurgy.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Materials Science, Multidisciplinary
M. A. Hussein, A. Madhan Kumar, M. A. Azeem, N. Ankah
Summary: This study focused on designing and processing a Ti-30Nb alloy with improved biocorrosion protection and lower elastic modulus for orthopedic applications. The effect of sintering temperature on phases, microstructure, microhardness, and modulus of elasticity was investigated. The results showed that increasing the sintering temperature enhanced the density, microhardness, and corrosion protection of the Ti-30Nb alloy. The developed Ti-30Nb alloy has a lower modulus and higher surface energy than commercial Ti6Al4V alloy, making it a potential candidate for orthopedic implants.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Mathematics, Interdisciplinary Applications
V Ivannikov, F. Thomsen, T. Ebel, R. Willumeit-Roemer
Summary: A novel discrete element method-based approach is proposed for modeling solid state sintering of spherical metallic powder, addressing the thermodynamical mass transport effects and mechanical interaction between particles near grain boundaries. The model consists of solving partial differential equations to describe matter flow behavior at grain boundaries and representing the mechanical interaction using 2-nodal structural elements with 6 degrees of freedom per node. Numerical implementation shows good agreement with experimental data for neck growth and shrinkage rates.
COMPUTATIONAL PARTICLE MECHANICS
(2022)
Review
Engineering, Chemical
T. Chen, C. Suryanarayana, C. Yang
Summary: Advanced Ti materials, including Ti, Ti alloys, and Ti-matrix composites, have significant advantages over conventional counterparts in terms of higher performance, lower cost, and wider applications. Titanium hydride (TiH2) powder has many advantages in producing advanced Ti materials, such as high relative density, novel microstructure, and competitive mechanical properties. This review summarizes the research progress on the dehydrogenation mechanism and resultant effect of TiH2 powder, the interrelation between processing technologies, microstructures, and mechanical properties of advanced Ti materials, and the influence of Kirkendall's pores on mechanical properties of Ti matrix composites.
Article
Automation & Control Systems
Da-ming Sun, Xiao-song Jiang, Hong-liang Sun, Yong-jian Fang, Ting-feng Song
Summary: The Fe-based cermets with SiCP as abrasive were prepared through vacuum hot pressing sintering. The study analyzed the influence of SiCP content on the microstructure and grinding performance of Fe-based cermets, revealing that the grinding mechanism changed with decreasing SiCP content. Through experiments and finite element analysis, the source/distribution of grinding heat and heat flow were verified, and the mechanism of material removal was revealed, indicating a shift in grinding behavior from cutting and plowing to friction with decreasing SiCP content.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jianli Huang, Yiying Jin, Xu Chu, Zhifei Shu, Xinxin Ma, Jingyong Liu
Summary: Loose powder sintering was used to prepare porous ceramic from MSWI FA and WG. Increasing temperature and holding time promoted densification and heavy metal removal efficiency. Addition of Al2O3 inhibited volatilization of certain heavy metals, while SiC decreased bulk density. A proposed ratio of MSWI FA:WG:Al2O3:borax resulted in ceramic meeting regulatory standards.
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)
Article
Engineering, Manufacturing
Vahid Fartashvand, Rezvan Abedini, Amir Abdullah
Summary: This study investigates the influence of longitudinal ultrasonic vibration on the physical/mechanical properties of sintered titanium powder samples. The results show that the application of ultrasonic vibration improves the density of fine powder sintered samples, although their compacted density is still lower than that of coarse powder samples. Additionally, coarse powder samples exhibit better dimensional stability than fine powder samples, with a decrease in shrinkage of up to 12%. The compression strength is also improved by 64% due to the application of ultrasonic vibration.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2022)
Review
Materials Science, Multidisciplinary
Francisco Cavilha Neto, Mauricio Vitor Giaretton, Guilherme Oliveira Neves, Claudio Aguilar, Marcelo Tramontin Souza, Cristiano Binder, Aloisio Nelmo Klein
Summary: Titanium foams have gained increasing interest in the biomedical industry as biomimetic implants in the past two decades. The porous structure is crucial for bone adhesion and reducing elastic modulus to enhance compatibility with bone.
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
Chemistry, Physical
Paloma Trueba, Carlos Navarro, Merce Giner, Jose A. Rodriguez-Ortiz, Maria Jose Montoya-Garcia, Ernesto J. Delgado-Pujol, Luisa M. Rodriguez-Albelo, Yadir Torres
Summary: This study evaluates the fatigue and cellular performance of novel superficially treated porous titanium dental implants and discusses the effect of surface modifications on the implants' properties. The results show that factors such as porosity, surface roughness, chemical composition, and coating adherence have a significant impact on the fatigue life and cellular activity of the implants.
Article
Chemistry, Physical
Ana M. Beltran, Merce Giner, Angel Rodriguez, Paloma Trueba, Luisa M. Rodriguez-Albelo, Maria Angeles Vazquez-Gamez, Vanda Godinho, Ana Alcudia, Jose M. Amado, Carmen Lopez-Santos, Yadir Torres
Summary: This study investigates the effects of modifying the texture and surface roughness of porous titanium samples using a femtosecond Yb-doped fiber laser on implant performance. The results show that the laser treatment creates a rough surface with micro-columns and micro-holes covered by ripples over micro-metric structures. The optimal candidate for bone tissue replacement is a titanium sample with 30% porosity and a pore range size of 100-200 μm.
Article
Chemistry, Physical
Ana Alcudia, Belen Begines, Paula Rodriguez-Lejarraga, Valeria Greyer, Vanda Cristina Fortio Godinho, Eloisa Pajuelo, Yadir Torres
Summary: This study proposes a joint solution to address stress shielding, poor osseointegration, and bacterial infections of titanium dental implants, by using porous Ti samples and coating techniques. This solution aims to improve the survival rate and biocompatibility of titanium dental implants.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Pharmacology & Pharmacy
Francesca Accioni, Giovanna Rassu, Belen Begines, Luisa Marleny Rodriguez-Albelo, Yadir Torres, Ana Alcudia, Elisabetta Gavini
Summary: This study presents a novel microtechnology based on polycaprolactone microspheres for porous dental implants. The microspheres loaded with an antibacterial therapeutic agent were successfully infiltrated into the porous titanium substrate, providing a suitable prophylactic tool for preventing early-stage infection and late-stage osseointegration problems.
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)
