Development of a Co-20Cr alloy for potential biomedical applications
Ana Ramirez-Ledesma1, Hugo Lopez F2*, Julio Juarez-Islas1
1Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Av. Universidad 3000, Circuito Exterior S/N, Cd. Universitaria, 04510, Mexico, D. F., Mexico
2Materials Science and Engineering Department, CEAS, University of Wisconsin-Milwaukee 3200 N. Cramer Street, Milwaukee WI 53211, USA
Adv. Mater. Lett., 2018, 9 (4), pp 291-295
DOI: 10.5185/amlett.2018.1586
Publication Date (Web): May 17, 2018
Copyright © 2019 VBRI Press
E-mail: hlopez@uwm.edu
A Co-20 wt. Cr alloy was vacuum induction melted and cast into a wedge shaped copper mold. The resultant microstructures were investigated from sections obtained longitudinally and centrally in the plane normal to the diverging wedge faces. The aim of this work was to produce a microstructure free of interdendritic segregation with minimal or no intermetallic precipitates and suitable for biomedical implant applications. The as-cast microstructure consisted predominantly of columnar dendrites. In particular, the presence of athermal HCP e-martensite and the metastable FCC γ-Co phase were identified by X-ray diffraction means and scanning electron microscopy. It was found that the exhibited volume fraction of athermal e-martensite was over 90 wt. %. In addition, a heat treating below the γ/e transition temperature led to transformation of the athermal e-martensite into a stress-relieved isothermal one. In turn, the resultant tensile properties, ductility and fracture mode of the alloy after the heat treatment exhibited significant changes. Finally, preliminary tests in artificial saliva indicated that the heat-treated alloy possesses appreciable corrosion resistance when compared with other Co-alloys, making it an ideal candidate for dental implants.
Cloud Medicine set to Revolutionize Doorstep Personalized Healthcare
Various surfactants for 0 – 3 dimensional nanocarbons: Separation, exfoliation and solubilization
Polypyrrole based biofunctional composite layer for bioelectrocatalytic device system
Innovative Graphene-PDMS sensors for aerospace applications
Effect of hot drawing process and carbonization temperature in electrochemical behavior of electrospun carbon nanofibers
Chemical Reactivity and Electronical Properties of Graphene and Reduced Graphene Oxide on Different Substrates
Laser Raman micro-spectroscopy as an effective non-destructive method of detection and identification of various sp2 carbon modifications in industry and in nature
Electrochemical promotion of ammonia synthesis with proton-conducting solid oxide fuel cells
Biomimetic surfaces with hierarchical structure using microsized texture and nanosized Cu particles for superhydrophobicity
Enhancement the properties of high and low-density polyethylene membranes by radiation grafting process
Synthesis of 9-Aminoacridine and its Application as an Anode Material for Aqueous Rechargeable Lithium–ion Batteries
Facile synthesis of novel tough and highly flexible biodegradable membranes for water microfiltration
Investigating the possibility of using acetic acid in place of HF in chromium-benzenedicarboxylates (MIL-53 and MIL-101) synthesis applicable for CO2 adsorption
Smart Healthcare pulls up Clouds for Virtual Medicine
Selecting the correct electromagnetic inspection technology
Influence of railway-track grinding on the track material condition and tribological behaviour
Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens
Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices
Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers
Photomemristive heterostructures based on two-dimensional crystals
Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers
Graphene and doped graphene: A comparative DFT study
Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye
Optimization of acid hydrolysis process for the preparation cellulose nanofibrils
Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin
Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel
Copyright ©2010-2019 VBRI Press
Full Article