The versatility of titanium (Ti) allows it to be employed in various industries, from aerospace engineering to medical technology, highlighting its significance in modern manufacturing and engineering processes. Spark plasma sintering (SPS) is currently being explored to enhance its properties further and broaden its application range. The current study focuses on exploring and optimizing the effect of SPS temperature (800, 900, 1000, 1100, 1200, and 1400 °C) on pure Ti sintered at 60 MPa in a controlled argon environment with a dwell time of 5 min. All the prepared samples were highly dense with a relative density above 99%, but exhibited significant variations in grain size (10 to 57 µm), tensile yield strength (488 to 700 MPa), ultimate tensile strength (597 to 792 MPa), and ductility (4 to 7%). A microstructural investigation was performed using XRD, SEM, and EDS to predict the influence of sintering temperature on the formation of different phases. The XRD patterns of all sintered samples showed the presence of single-phase α-Ti with hexagonally close-packed Ti. This work is a step forward in optimizing SPS-processed Ti's physical and mechanical properties for enhanced structural and biomedical applications.
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http://dx.doi.org/10.3390/ma17143469 | DOI Listing |
ACS Appl Mater Interfaces
December 2024
Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, 41-800 Zabrze, Poland.
This work covers a Mg-Zn-Ca-Pr alloy fabricated by a novel method of mechanical alloying and spark plasma sintering (SPS). Currently, magnesium alloys used as biomaterials are mostly commercial alloys without consideration of cytotoxicity from the perspective of biosafety. So far, the tribological and cytotoxic properties of Mg-Zn-Ca-Pr alloys have not been investigated.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China.
Five carbide powders, TiC, CrC, ZrC, NbC and SiC, were selected as raw materials and mixed by dry or wet milling. Then (TiCrZrNb)C-SiC multiphase ceramics were successfully prepared by spark plasma sintering (SPS) at 1900 °C, using D-HECs-1900 (dry milling method) and W-HECs-1900 (wet milling method), respectively. In this study, the effects of the ball milling method on the microstructure and mechanical properties of the multiphase high-entropy ceramics were systematically investigated.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
School of Materials Science & Engineering, Sichuan University, Chengdu 610065, China.
The spark plasma sintering (SPS) process was used to create iron-based composites reinforced with tungsten carbide (WC) particles of various morphologies, and the effect of WC particle morphology on material wear resistance was systematically investigated. The experiment revealed that the addition of non-spherical WC (CTC-A) significantly altered the composites' friction coefficient, wear morphology, and wear mechanism. As the CTC-A content increased, the composites' wear rate decreased at first, then increased, and then decreased again.
View Article and Find Full Text PDFNanomaterials (Basel)
November 2024
Institute for Technical Physics and Materials Science, HUN-REN Centre for Energy Research, Konkoly-Thege Miklós Str. 29-33, 1121 Budapest, Hungary.
Engineering ceramics and their composites are widely used owing to their excellent properties, including high wear, corrosion and heat resistance, low friction coefficient, and low thermal conductivity; thus, the current paper presents a comprehensive review of the most common types of engineering ceramics, demonstrating their key properties, advantages, potential applications, and challenges. This paper also provides prevailing methods for tackling the engineering ceramic challenges and maximizing their applicability. This review paper focuses on alumina (AlO), silicon carbide (SiC), zirconia (ZrO), aluminum nitride (AlN), and silicon nitride (SiN), and explores their usability in automotive, aerospace, and tribological applications.
View Article and Find Full Text PDFActa Biomater
December 2024
School of Mechanical and Mining Engineering, University of Queensland, Brisbane QLD4072, Australia.
The significance of biomedical applications of bio-functional niobium (Nb)-based metallic biomaterials is underscored by their potential utilization in implant application. Nb-based metallic materials present reliable physicomechanical and biological properties, thus represent materials highly suitable for implant application. This review provides an overview on the advances of pure niobium and Nb-based metallic materials as implant materials over the past 20 years, and highlights the advantages of Nb-based metallic biomaterials for implant application in terms of their physicomechanical properties, corrosion resistance in biological media, magnetic resonance imaging (MRI) compatibility, cell compatibility, blood compatibility, osteogenesis, and bioactivity.
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