Mechanical behavior and corrosion properties of Ti-7Mo-8Nb alloy for biomedical applications

Magnesium (Mg)-based alloys have attracted great interest as metallic biomaterials for orthopedic applications due to their biocompatibility, biodegradability, and mechanical properties that resemble those of cortical bone. However, the potential toxicity of alloying elements in commercially available Mg alloys makes it critical to engineer and screen new alloys specifically for biomedical applications. The objective of this study was to evaluate and compare the in vitrodegradation and cytocompatibility of two distinct Mg - Zinc (Zn) - Calcium (Ca) alloys (Mg-4%Zn-1%Ca and Mg-9%Zn-1%Ca, wt. %; abbreviated as ZCa41 and ZCa91, respectively) using a bonemarrow derived mesenchymal stem cell (BMSC) model. Both Zn and Ca play critical roles in boneformation and growth, and have been shown to increase mechanical and corrosion properties of Mgalloys. BMSCs provide vertebrates the continuous supply of osteoblasts needed for bone remodelingand repair, and thus were selected to determine the effect of increasing Zn content on cell behavior.Surface microstructure and composition of the alloys were characterized before and after BMSC culture using field emission scanning electron microscopy (FESEM) and energy dispersive X-rayspectroscopy (EDS). Thermanox® treated glass and plasma treated tissue culture polystyrene were used as a control and reference, respectively. Results indicated that the ZCa91 alloy improved BMSC adhesion as compared with ZCa41 alloy. The formation of high-aspect ratio needle-likefeatures on the surface of ZCa41 alloy after its degradation in cell culture media was speculated tocontribute to the lower cell adhesion. This study provided an early indication on cytocompatibility of Mg-Zn-Ca alloys for biomedical applications.

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Mechanical Behavior and Corrosion Properties of AA8079 Sheets

Journal of the Mechanical Behavior of Materials ◽

10.1515/jmbm.2006.17.1.1 ◽

2006 ◽

Vol 17 (1) ◽

pp. 1-16

Author(s):

Kemal Delijic, ◽

Vanja Asanovic, ◽

Dragan Radonjic,

Keyword(s):

Mechanical Behavior ◽

Corrosion Properties

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Microstructure, Mechanical and Corrosion Properties and Biocompatibility of Mg-Y-Zn-Zr Rolled Alloy for Biomedical Applications

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-021-02401-8 ◽

2021 ◽

Author(s):

Shenggang Zhou ◽

Yuanqi You ◽

Jinyang Zhang ◽

Yong Cao

Keyword(s):

Biomedical Applications ◽

Corrosion Properties ◽

Mechanical And Corrosion Properties

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Experimental investigation and empirical modeling for corrosion rate prediction of biodegradable zinc based composite considering the effect of constituent materials

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/09544062211055658 ◽

2021 ◽

pp. 095440622110556

Author(s):

Dayanidhi Krishana Pathak ◽

Pulak Mohan Pandey

Keyword(s):

Mechanical Properties ◽

Corrosion Rate ◽

Biomedical Applications ◽

Microwave Sintering ◽

Research Work ◽

Simulated Body Fluid Solution ◽

Corrosion Current ◽

Essential Elements ◽

Empirical Modeling ◽

Corrosion Properties

Biodegradable zinc (Zn) has shown great potential in the area of biomedical applications. Though, the mechanical properties are decisive for the use of Zn for orthopedic and cardiovascular applications. Consequently, one needs to focus on improving the mechanical properties of Zn for its suitability in biomedical applications. Alloying of essential elements of the human body resulted in enhancement of Zn’s mechanical properties in recent years. The corrosion rate of pure Zn is ideal; however, the addition of other elements has resulted in a loss of its ideal corrosion rate. The inclusion of hydroxyapatite (HA) and iron (Fe) in Zn has also been reported in improving the mechanical properties. Hence, a need is raised for the development of a model which can predict the corrosion rate after adding HA along with Fe in Zn. In this research work, empirical based modeling is proposed to predict the corrosion rate, which incorporates the outcome of addition of Fe and HA in Zn. The Zn based materials were fabricated with the help of microwave sintering for developing the empirical model. The corrosion properties of the materials were assessed through a potentiodynamic polarization test in a simulated body fluid solution. The enhanced corrosion rate was attained with the rise in HA (wt%) and Fe (wt%) in Zn. An empirical correlation was established between the influencing controlling parameters (i.e., corrosion current, equivalent weight, and material density) of corrosion rate. Confirmation experiments were conducted to validate the developed model, and the highest error of 6.12% was obtained between the experimental and predicted values exhibiting the efficaciousness of the proposed model.

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Corrosion Properties of Plasma Oxidized Titanium Nitride for Biomedical Applications

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.227.471 ◽

2015 ◽

Vol 227 ◽

pp. 471-474 ◽

Cited By ~ 1

Author(s):

Jerzy Robert Sobiecki ◽

Agnieszka Brojanowska ◽

Konrad Kowalczyk

Keyword(s):

Titanium Nitride ◽

Calcium Ions ◽

Biomedical Applications ◽

Oxidation Potential ◽

Plasma Oxidation ◽

Corrosion Properties ◽

Oxide Layers ◽

Oxidation Processes ◽

Oxidation Potentials ◽

Electrolytic Plasma Oxidation

The article compares the corrosion properties of oxide layers formed on titanium nitride (obtained in glow-discharge nitriding) using electrolytic plasma oxidation. The corrosion properties are analysed in correlation with the surface morphology, microstructure and chemical composition of the layers. The oxidation processes were carried out in 10% and 25% phosphoric acid (V) solutions containing Ca2+ calcium ions. In each of these environments, oxide layers were formed using three oxidation potentials: 200V, 400V and 600 V. The oxidation potential and the concentration of acid and calcium ions in the oxidation solution was shown to affect the morphology of the surface and the corrosion properties of the oxide layers obtained.

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Effect of nitrogen and cold working on structural and mechanical behavior of Ni-free nitrogen containing austenitic stainless steels for biomedical applications

Materials Science and Engineering C ◽

10.1016/j.msec.2014.10.078 ◽

2015 ◽

Vol 47 ◽

pp. 196-203 ◽

Cited By ~ 29

Author(s):

Mohd Talha ◽

C.K. Behera ◽

O.P. Sinha

Keyword(s):

Mechanical Behavior ◽

Stainless Steels ◽

Biomedical Applications ◽

Cold Working ◽

Austenitic Stainless Steels

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Corrosion Properties of DLC-Coated Stainless Steel in Hank`s Solution for Biomedical Applications

ECS Meeting Abstracts ◽

10.1149/ma2011-02/24/1798 ◽

2011 ◽

Keyword(s):

Stainless Steel ◽

Biomedical Applications ◽

Corrosion Properties

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AZ31 and WE43 Alloys for Biomedical Applications

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.270.205 ◽

2017 ◽

Vol 270 ◽

pp. 205-211 ◽

Cited By ~ 2

Author(s):

Drahomír Dvorský ◽

Jiří Kubásek ◽

Dalibor Vojtěch

Keyword(s):

Mechanical Properties ◽

Magnesium Alloys ◽

Biomedical Applications ◽

Intermetallic Phases ◽

Alloying Elements ◽

Biodegradable Implants ◽

Preparation Process ◽

Magnesium Matrix ◽

Corrosion Properties ◽

Mechanical And Corrosion Properties

Magnesium and its alloys are considered for application as materials for biodegradable implants as they have mechanical properties similar to bone tissue. High demands on corrosion and mechanical properties are made on these alloys. While mechanical properties of magnesium are usually enhanced by alloying, corrosion properties may deteriorate. This paper is focused on the comparison of magnesium alloys AZ31 (3 wt. % Al, 1 wt. % Zn) and WE43 (4 wt. % Y, 3 wt. % Nd) which are considered for biomedical applications. Besides the type of alloying elements, the preparation process has also great impact on final mechanical and corrosion properties. Alloying elements may be dissolved in magnesium matrix or they can form intermetallic phases, which alter final properties. Microstructure, mechanical and corrosion properties of AZ31 and WE43 were studied and compared with pure magnesium.

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Semt-Solid Processing of Titanium Alloys for Biomedical Applications

MRS Proceedings ◽

10.1557/proc-55-361 ◽

1985 ◽

Vol 55 ◽

Cited By ~ 2

Author(s):

B. Toloui ◽

J. V. Wood

Keyword(s):

Titanium Alloys ◽

Biomedical Applications ◽

The Body ◽

Basic Process ◽

Corrosion Properties ◽

Forged Parts ◽

Wide Range ◽

Mechanical And Corrosion Properties ◽

Semi Solid ◽

Powder Titanium

ABSTRACTAmong metallic systems, titanium alloys are prime candidate materials for biomedical applications in view of their apparent properties in the body environment. While machined and forged parts of CPTi, or Ti-6Al-4V, are suitable for many applications, they are not economical for one-off objects or artefacts of extreme intricacy. Titanium castings are an obvious solution to the problem but these are extremely difficult to process without contamination. Alloying allows a lowering of the melting point and significantly reduces the risk of contamination but the resultant alloys are normally brittle due to networks of intermetallics forming. This paper describes a process of semi-solid casting using a powder titanium feedstock for making one-off castings of artefacts like those required in dentistry. The process will be described and the mechanical and corrosion properties of several alloys which are compatible with this technique are assessed. The basic process is relatively inexpensive and provides a useful tool for examining a wide range of potential titanium base alloys.

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