scholarly journals Analysis of Metallic Materials used for Manufacturing of Extruders Screws

2019 ◽  
Vol 23 (3) ◽  
pp. 36-41
Author(s):  
Anna Dziubińska ◽  
Janusz Sikora
Keyword(s):  
Metallic Materials ◽  
Materials Used

scholarly journals Nanoengineering in biomedicine: Current development and future perspectives

2020 ◽  
Vol 9 (1) ◽  
pp. 700-715 ◽  
Author(s):  
Wei Jian ◽  
David Hui ◽  
Denvid Lau
Keyword(s):  
Molecular Dynamics ◽  
Research And Development ◽  
Molecular Dynamics Simulations ◽  
Material Properties ◽  
Biomedical Applications ◽  
Metallic Materials ◽  
Future Perspectives ◽  
Current Development ◽  
Materials Used ◽  
Dynamics Simulations

AbstractRecent advances in biomedicine largely rely on the development in nanoengineering. As the access to unique properties in biomaterials is not readily available from traditional techniques, the nanoengineering becomes an effective approach for research and development, by which the performance as well as the functionalities of biomaterials has been greatly improved and enriched. This review focuses on the main materials used in biomedicine, including metallic materials, polymers, and nanocomposites, as well as the major applications of nanoengineering in developing biomedical treatments and techniques. Research that provides an in-depth understanding of material properties and efficient enhancement of material performance using molecular dynamics simulations from the nanoengineering perspective are discussed. The advanced techniques which facilitate nanoengineering in biomedical applications are also presented to inspire further improvement in the future. Furthermore, the potential challenges of nanoengineering in biomedicine are evaluated by summarizing concerned issues and possible solutions.

Evaluation of the nanodebris produced by in vitro degradation of titanium-based dental implants in the presence of bacteria using single particle and single cell inductively coupled plasma mass spectrometry.

2021 ◽  
Author(s):  
Marzia Cosmi ◽  
Nathaly Gonzalez-Quiñonez ◽  
Pablo Tejerina Díaz ◽  
Ángel Manteca ◽  
Elisa Blanco González ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Dental Implants ◽  
Inductively Coupled Plasma ◽  
Metallic Materials ◽  
In Vitro Degradation ◽  
Inductively Coupled ◽  
Oral Environment ◽  
Plasma Mass Spectrometry ◽  
Materials Used

The bio-tribocorrosion of metallic materials used for dental implants (Ti and alloys) in the oral environment involves the production of metallic debris in the ionic, but also in the nanoparticulated...

Stainless Steels with Biocompatible Properties for Medical Devices

2013 ◽  
Vol 583 ◽  
pp. 9-15 ◽  
Author(s):  
Victor Geanta ◽  
Ionelia Voiculescu ◽  
Radu Stefanoiu ◽  
Elena Roxana Rusu
Keyword(s):  
Medical Devices ◽  
Stainless Steels ◽  
Point Of View ◽  
Vacuum Arc ◽  
Metallic Materials ◽  
Vacuum Arc Remelting ◽  
Martensitic Stainless Steels ◽  
Superior Mechanical Properties ◽  
Materials Used ◽  
Experimental Researches

Stainless steels, commercial as well as with special properties, are the principal metallic materials used for medical devices manufacturing. Stainless steels for medical devices should have superior mechanical properties, as: hardness, wear resistance, tensile strength, elongation, fracture toughness, creep resistance etc. This paper aims to present experimental researches regarding the obtaining in vacuum arc remelting device (VAR) of austenitic and martensitic stainless steels and their characterization from microstructure and microhardness point of view.

scholarly journals Considerations on determining the castability of dental casting alloys

2018 ◽  
Vol 178 ◽  
pp. 04009
Author(s):  
Cristian Deac ◽  
Alina Gligor ◽  
Lucian Tarnu
Keyword(s):  
Titanium Alloy ◽  
Critical Analysis ◽  
Casting Machine ◽  
Current Paper ◽  
Metallic Materials ◽  
Dental Alloys ◽  
Casting Alloys ◽  
And Performance ◽  
Materials Used ◽  
Dental Casting Alloys

Castability is, along with biocompatibility, one of the most important characteristics of metallic materials used for dental prosthetic applications. In addition, the characteristics and performance of the employed casting machine are also decisive for the end result of the casting, especially when dealing with titanium or a titanium alloy. Starting from a critical analysis of the existing methods for determining the castability of dental alloys, the current paper presents a new method (and associated pattern) for determining the castability. Also, given the castability’s dependence on the type of casting machine, the paper includes an analysis of suitable casting machines and suggests some possible improvements.

Experimental Research of the Formability of Lightweight Metallic Materials Used in Automotive Industry

2015 ◽  
Vol 760 ◽  
pp. 391-396 ◽  
Author(s):  
Claudia Girjob ◽  
Octavian Bologa ◽  
Sever Gabriel Racz ◽  
Cristina Biris
Keyword(s):  
Magnesium Alloy ◽  
Deformation Behaviour ◽  
Alloy System ◽  
Tensile Tests ◽  
Forming Limit ◽  
Metallic Materials ◽  
Az31b Magnesium Alloy ◽  
Materials Used ◽  
Experimental Researches ◽  
Forming Limit Curves

This paper aims to study the plastic deformation behaviour of lightweight metallic materials in order to reduce the total weight of the vehicles without affecting their performances. For the theoretical and experimental researches presented here, among these materials the AZ31B magnesium alloy has been chosen, a representative alloy for the magnesium-zinc-aluminium alloy system. The results of the theoretical researches, made on finite elements models, were validated by means of experimental researches consisting of tensile tests, forming limit curves determination tests and AZ31B magnesium alloy drawing, respectively.

An Investigation of Non-Metallic Pipe for Use With Liquid Corrosives

CORROSION ◽  
1960 ◽  
Vol 16 (2) ◽  
pp. 25-30
Keyword(s):  
Metallic Materials ◽  
Tabular Data ◽  
Proper Selection ◽  
Materials Used ◽  
Selection Of

Abstract Metallic and non-metallic materials used for piping are discussed, showing the number of different corrosive solutions each material can handle, and comparative costs of the two groups of materials. Also discusses proper selection of non-metallics for use with liquid corrosives. Includes tabular data from investigation. 7.2

scholarly journals A Complex Evaluation of the In-Vivo Biocompatibility and Degradation of an Extruded ZnMgSr Absorbable Alloy Implanted into Rabbit Bones for 360 Days

2021 ◽  
Vol 22 (24) ◽  
pp. 13444
Author(s):  
Karel Klíma ◽  
Dan Ulmann ◽  
Martin Bartoš ◽  
Michal Španko ◽  
Jaroslava Dušková ◽  
...  
Keyword(s):  
Bone Fractures ◽  
Rabbit Model ◽  
Control Group ◽  
Metallic Materials ◽  
Second Stage ◽  
Complex Evaluation ◽  
Rabbit Tibia ◽  
Good Biocompatibility ◽  
Materials Used

The increasing incidence of trauma in medicine brings with it new demands on the materials used for the surgical treatment of bone fractures. Titanium, its alloys, and steel are used worldwide in the treatment of skeletal injuries. These metallic materials, although inert, are often removed after the injured bone has healed. The second-stage procedure—the removal of the plates and screws—can overwhelm patients and overload healthcare systems. The development of suitable absorbable metallic materials would help us to overcome these issues. In this experimental study, we analyzed an extruded Zn-0.8Mg-0.2Sr (wt.%) alloy on a rabbit model. From this alloy we developed screws which were implanted into the rabbit tibia. After 120, 240, and 360 days, we tested the toxicity at the site of implantation and also within the vital organs: the liver, kidneys, and brain. The results were compared with a control group, implanted with a Ti-based screw and sacrificed after 360 days. The samples were analyzed using X-ray, micro-CT, and a scanning electron microscope. Chemical analysis revealed only small concentrations of zinc, strontium, and magnesium in the liver, kidneys, and brain. Histologically, the alloy was verified to possess very good biocompatibility after 360 days, without any signs of toxicity at the site of implantation. We did not observe raised levels of Sr, Zn, or Mg in any of the vital organs when compared with the Ti group at 360 days. The material was found to slowly degrade in vivo, forming solid corrosion products on its surface.

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