scholarly journals Laser irradiation of Mg-Al-Zn alloy: Reduced electrochemical kinetics and enhanced performance in simulated body fluid

2017 ◽  
Vol 12 (2) ◽  
pp. 021003 ◽  
Author(s):  
David C. Florian ◽  
Michael A. Melia ◽  
Fritz W. Steuer ◽  
Bruce F. Briglia ◽  
Michael K. Purzycki ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Laser Irradiation ◽  
Body Fluid ◽  
Electrochemical Kinetics ◽  
Zn Alloy

scholarly journals Laser irradiation of WE54 surface through simulated body fluid layer

2017 ◽  
Author(s):  
Indira Khadka ◽  
Sylvie Castagne ◽  
Zhongke Wang ◽  
Hongyu Zheng ◽  
Kuddannaya Shreyas
Keyword(s):  
Simulated Body Fluid ◽  
Laser Irradiation ◽  
Body Fluid ◽  
Fluid Layer

Biodegradable Behaviors of Mg-6%Zn-5%Hydroxyapatite Biomaterial

2011 ◽  
Vol 239-242 ◽  
pp. 1287-1291 ◽  
Author(s):  
Jun Zhao ◽  
Zhi Ming Yu ◽  
Kun Yu ◽  
Liang Jian Chen
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Powder Metallurgy ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Corrosion Products ◽  
Powder Metallurgy Method ◽  
Corrosion Rates ◽  
Immersion Corrosion ◽  
Zn Alloy

The Mg-6%Zn-5%Hydroxyapatite (HA) biomaterial had been prepared through powder metallurgy method in this investigation. The mechanical properties and biodegradable behaviors of the Mg-Zn-HAcomposite in simulated body fluid were studied. The Mg-Zn-HA specimens obtained appropriate density, adjustable elastic modulus and compatible strength to natural bones. Immersion corrosion experiments revealed that 5wt% addition of HA in Mg-6%Zn alloy exhibited acceptable corrosion rates in simulated body fluid. The Mg matrix, Mg7Zn3phase and HA are identified in the experimental composite. The Mg(OH)2and Hydroxyapatite were found on the corrosion products in the simulated body fluid.

Laser Surface Modification of Rare Earth Containing Magnesium Alloy Through Simulated Body Fluid and Its Impact on Cell Viability

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Khadka Indira ◽  
Wang Zhongke ◽  
Zheng Hongyu ◽  
Castagne Sylvie
Keyword(s):  
Rare Earth ◽  
Simulated Body Fluid ◽  
Cell Viability ◽  
Surface Treatment ◽  
Laser Irradiation ◽  
Body Fluid ◽  
Laser Surface ◽  
Test Method ◽  
Surface Structures ◽  
Direct Laser

Magnesium alloys have a good potential as structural biomaterials for temporary implant applications because of their self-degradation properties and biocompatibility. The surface condition is important for such applications, and lasers are often used to modify the surface characteristics of such components. In this context, the media through which the laser beam passes before reaching the surface to be irradiated is also of interest. In particular, laser irradiation in liquids affects the thermal energy delivery to the surface of the material, which in turns influences the formation of surface structures. In this work, rare earth containing WE54 Mg alloy has been irradiated under air and through a simulated body fluid (SBF) layer using a 500 watt pulsed Nd: YAG laser. As compared to direct laser surface treatment through air, laser irradiation through SBF generates new surface structures and deposition of ions issued from the SBF solution. Scanning electron microscope combined with energy dispersive spectroscopy (EDS) was used for the examination of surface structures formation and determination of elemental composition. Mesenchymal stem cells (MSC) culture was performed on laser modified WE54 alloy surface, and the MSC cytocompatibility on SBF-treated substrates was evaluated by the PrestoBlue™ assay test method. Cell reproducibility was observed on the SBF laser-treated surface which indicated that cell viability was improved by the surface treatment. The deposition of calcium and phosphorus ions on the WE54 surface was beneficial for cell viability. These results motivate the potential use of SBF-based films for biomedical purposes.

scholarly journals In Vitro Degradation Behaviors of Manganese-Calcium Phosphate Coatings on an Mg-Ca-Zn Alloy

Scanning ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Yichang Su ◽  
Yingchao Su ◽  
Wei Zai ◽  
Guangyu Li ◽  
Cuie Wen
Keyword(s):  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Electrochemical Corrosion ◽  
Hydrogen Release ◽  
Phosphate Coatings ◽  
Degradation Behaviors ◽  
Calcium Phosphate Coatings ◽  
Zn Alloy

In order to decrease the degradation rate of magnesium (Mg) alloys for the potential orthopedic applications, manganese-calcium phosphate coatings were prepared on an Mg-Ca-Zn alloy in calcium phosphating solutions with different addition of Mn2+. Influence of Mn content on degradation behaviors of phosphate coatings in the simulated body fluid was investigated to obtain the optimum coating. With the increasing Mn addition, the corrosion resistance of the manganese-calcium phosphate coatings was gradually improved. The optimum coating prepared in solution containing 0.05 mol/L Mn2+ had a uniform and compact microstructure and was composed of MnHPO4·3H2O, CaHPO4·2H2O, and Ca3(PO4)2. The electrochemical corrosion test in simulated body fluid revealed that polarization resistance of the optimum coating is 36273 Ωcm2, which is about 11 times higher than that of phosphate coating without Mn addition. The optimum coating also showed the most stable surface structure and lowest hydrogen release in the immersion test in simulated body fluid.

Study on Corrosion Properties of Medical Mg-Zn Alloy

2018 ◽  
Vol 777 ◽  
pp. 607-611
Author(s):  
Zhi Ling Wang
Keyword(s):  
Simulated Body Fluid ◽  
Corrosion Rate ◽  
Body Fluid ◽  
Body Fluids ◽  
Corrosion Products ◽  
Corrosion Properties ◽  
Corrosion Morphology ◽  
Zn Content ◽  
Simulated Body Fluids ◽  
Zn Alloy

Casting Mg-Zn alloy was corroded on the surface and analyzed the corrosion morphology and corrosion properties under different corrosion conditions. The results show that Mg-Zn alloy is unevenly by corrosion in simulated body fluids and the corrosion products are brittle and easy to break. With the increase of Zn content in Mg-Zn alloy, the corrosion rate of casting Mg-Zn alloy in simulated body fluid is improved obviously.

Corrosion behavior of TiO2 films on Mg–Zn alloy in simulated body fluid

2011 ◽  
Vol 257 (9) ◽  
pp. 4464-4467 ◽  
Author(s):  
Shuai Chen ◽  
Shaokang Guan ◽  
Bin Chen ◽  
Wen Li ◽  
Jun Wang ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Corrosion Behavior ◽  
Body Fluid ◽  
Tio2 Films ◽  
Zn Alloy

IN-VITRO BEHAVIOUR OF BIPHASIC CALCIUM PHOSPHATE WITH DIFFERENT RATIO OF SILICA CONTENT IN SIMULATED BODY FLUID

2015 ◽  
Vol 23 (1) ◽  
pp. 1-14
Author(s):  
Sudirman Sahid ◽  
◽  
Nor Shahida Kader Bashah ◽  
Salina Sabudin ◽  
◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Biphasic Calcium Phosphate ◽  
Silica Content
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