Corrosion Behavior of Porous Mg Alloy in Simulated Body Fluid

2015 ◽  
Vol 754-755 ◽  
pp. 1093-1097
Author(s):  
Husna Z. Nurul ◽  
Chang Chuan Lee ◽  
Siti Norbahiyah ◽  
A.B. Sanuddin ◽  
M.Z. Zamzuri
Keyword(s):  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Biomedical Applications ◽  
Degradation Rate ◽  
Ammonium Bicarbonate ◽  
Mg Alloy ◽  
High Demand ◽  
Degradation Rates ◽  
Immersion Period

Magnesium (Mg) alloy possess a high demand in biomedical applications due to their biocompatibility and biodegradability. However the main limitation for Mg alloy is their fast degradation rates in physiological environment. This paper reports the preparation of porous Mg alloy through powder metallurgy technique by using ammonium bicarbonate (NH4HCO3) as space holder material and hexane as solvent. The corrosion behavior and degradation rate of porous Mg alloy was measured after 24h, 96h and 168h respectively of immersion in simulated body fluid (SBF) with compact Mg alloy as control. The results reported that degradation rate increased with increasing immersion period, yet the compact Mg alloy shows better degradation rate than porous Mg alloy. Moreover, the pH of SBF changed proportional to immersion period and stabilized after 96h of immersion.

Corrosion Behavior of P-Coated Biomedical Pure Magnesium

2015 ◽  
Vol 814 ◽  
pp. 389-391 ◽  
Author(s):  
Shi Jie Zhou ◽  
Jun Feng Li ◽  
Jian Ping Long ◽  
Han Qiu Du
Keyword(s):  
Corrosion Resistance ◽  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Electrochemical Behavior ◽  
Body Fluid ◽  
Biomedical Application ◽  
Chemical Conversion ◽  
Hard Tissue ◽  
Degradation Rates ◽  
Morphology And Structure

Magnesium and its alloys are potential materials in biodegradable hard tissue implants. However, the fast degradation rates in a physiological environment constitute the main limitation for biomedical application. In this work, the NH4H2PO4- KMnO4chemical conversion treatment on the surface was used. The morphology and structure of the coating was observed and analyzed by SEM. The electrochemical behavior in Hanks' simulated body fluid of the coated magnesium was systematically investigated. Our results disclose that the corrosion resistance of the P-coated magnesium is significantly improved.

In Vitro Bioactivity Assessment of Metallic Magnesium

2006 ◽  
Vol 309-311 ◽  
pp. 453-456 ◽  
Author(s):  
Haydée Y. López ◽  
Dora A. Cortés-Hernández ◽  
Sergio Escobedo ◽  
D. Mantovani
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Biomedical Applications ◽  
Degradation Rate ◽  
Magnesium Concentration ◽  
In Vitro Bioactivity ◽  
Ph Values ◽  
Heat Treated ◽  
Bonelike Apatite

In the aim to decrease the degradation rate of magnesium in simulated body fluid, pure magnesium was treated by two different routes, i) by soaking specimens in an HF aqueous solution at 30oC for 30 min and ii) by heating specimens at 345oC for 15 min. The treated samples were immersed in simulated body fluid (SBF) at 37oC for different periods of time. Samples with no treatment were also immersed in SBF. The magnesium released into the SBF, the weight loss of the specimens and the pH of SBF increased with time of immersion in all the cases. The heat treated samples showed a lower degradation rate and lower pH values. A substantial decrease of magnesium concentration in the SBF corresponding to the heat treated samples was also observed. However, the degradation rate of the heat treated samples remains being extremely high. On the other hand, a bonelike apatite layer was observed after only 3 days of immersion in SBF in all the cases. The thickness of this layer increased with time of immersion. Further research needs to be performed to decrease the degradation rate. However, these results indicate that magnesium is a highly potential bioactive material for biomedical applications.

Investigation of corrosion behavior of polypyrrole-coated Ti using dynamic electrochemical impedance spectroscopy (DEIS)

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 80275-80285 ◽  
Author(s):  
Bhavana Rikhari ◽  
S. Pugal Mani ◽  
N. Rajendran
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Electrochemical Impedance ◽  
Sbf Solution ◽  
Dynamic Electrochemical Impedance Spectroscopy

In the present work, dynamic electrochemical impedance spectroscopy (DEIS) was used to investigate the corrosion behavior of polypyrrole (PPy)-coated titanium (Ti) in simulated body fluid (SBF) solution.

In Vitro and In Vivo Degradation, Mechanical Properties, and Histocompatibility of Weft-Knitted Silk Mesh-Like Grafts

2022 ◽  
Vol 12 (2) ◽  
pp. 411-416
Author(s):  
Liang Tang ◽  
Si-Yu Zhao ◽  
Ya-Dong Yang ◽  
Geng Yang ◽  
Wen-Yuan Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Degradation Rate ◽  
Maximum Load ◽  
Artificial Ligament ◽  
In Vivo Degradation

To investigate the degradation, mechanical properties, and histocompatibility of weft-knitted silk mesh-like grafts, we carried out the In Vitro and In Vivo silk grafts degradation assay. The In Vitro degradation experiment was performed by immersing the silk grafts in simulated body fluid for 1 year, and the results showed that the degradation rate of the silk mesh-like grafts was very slow, and there were few changes in the mechanical properties and quality of the silk mesh-like graft. In Vivo degradation assay was taken by implantation of the silk mesh-like grafts into the subcutaneous muscles of rabbits. At 3, 6, and 12 months postoperation, the rate of mass loss was 19.36%, 31.84%, and 58.77%, respectively, and the maximum load was 63.85%, 34.63%, and 10.76%, respectively of that prior to degradation. The results showed that the degradation rate of the silk graft and the loss of mechanical properties In Vivo were faster than the results obtained in the In Vitro experiments. In addition, there were no significant differences in secretion of serum IL-6 and TNF-α between the experimental and normal rabbits (P >0.05), suggesting no obvious inflammatory reaction. The findings suggest that the weft-knitted silk mesh-like grafts have good mechanical properties, histocompatibility, and In Vivo degradation rate, and therefore represent a candidate material for artificial ligament

Corrosion behavior of surface-modified titanium in a simulated body fluid

2011 ◽  
Vol 46 (18) ◽  
pp. 5931-5939 ◽  
Author(s):  
Julia van Drunen ◽  
Baodong Zhao ◽  
Gregory Jerkiewicz
Keyword(s):  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Surface Modified

scholarly journals Corrosion study of metallic biomaterials in simulated body fluid

10.30544/384 ◽  
2011 ◽  
Vol 17 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Hamid Reza Asgari Bidhendi ◽  
Majid Pouranvari
Keyword(s):  
Stainless Steel ◽  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Pure Titanium ◽  
Localized Corrosion ◽  
Commercially Pure Titanium ◽  
Corrosion Properties ◽  
Cyclic Polarization ◽  
Cp Ti

Titanium alloys and stainless steel 316L are still the most widely used biomaterials for implants despite emerging new materials for this application. There is still someambiguity in corrosion behavior of metals in simulated body fluid (SBF). This paper aims at investigating the corrosion behavior of commercially pure titanium (CP-Ti), Ti–6Al–4V and 316LVM stainless steel (316LVM) in SBF (Hank’s solution) at37 ºC using the cyclic polarization test. Corrosion behavior was described in terms of breakdown potential, the potential and rate ofcorrosion, localized corrosion resistance, andbreakdown repassivation. The effects of anodizing on CP-Ti samples and the passivation on the 316LVM were studied in detail. It was shown that CP-Ti exhibited superior corrosion properties compared to Ti–6Al–4V and 316LVM.

Dynamic corrosion behavior of AZ80 magnesium alloy with different orientations in simulated body fluid

2021 ◽  
Vol 259 ◽  
pp. 124039
Author(s):  
Tao Zhu ◽  
Yi Yu ◽  
Jie Yang ◽  
Yongshui Shen ◽  
Liuyong He ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Az80 Magnesium Alloy
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