Enhanced corrosion resistance of bio-piezoelectric composite coatings on medical magnesium alloys

2020 ◽  
Vol 176 ◽  
pp. 108939
Author(s):  
Yufei Tang ◽  
Lixia Zhu ◽  
Ping Zhang ◽  
Kang Zhao ◽  
Zixiang Wu
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Composite Coatings ◽  
Piezoelectric Composite

scholarly journals Research Progress of Superhydrophobic Polymer Composite Coatings for os Magnesium Alloys

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Wensheng Fu ◽  
Yufang Luo ◽  
Jingjin Tan ◽  
Bohan Jiang
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Composite Coatings ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Research Progress ◽  
Practical Applications ◽  
Specific Strength ◽  
Promising Development

Abstract: Magnesium (Mg) alloy is the lightest metal material found because of its excellent physical and mechanical properties, specific strength, biocompatibility and biomechanical compatibility, therefore, it has very promising development prospects in aerospace, automobile manufacturing, and biodegradable materials. However, due to the relatively chemical properties of magnesium alloys, poor corrosion resistance, fast degradation rate, and poor wear resistance, they have been greatly restricted in practical applications. Therefore, anti-corrosion measures of magnesium alloys are particularly important. The manufacture of hydrophobic surfaces is a very effective method of anti-corrosion. The surface of super-hydrophobic polymer composites (i.e., thin coatings) is constructed on the surface of magnesium alloy materials to enhance their corrosion resistance and wear resistance, and the effect of its antiseptic measures is very impressive.

scholarly journals Corrosion Resistance of Micro-Arc Oxidation/Graphene Oxide Composite Coatings on Magnesium Alloys

ACS Omega ◽  
2020 ◽  
Vol 5 (13) ◽  
pp. 7262-7270 ◽  
Author(s):  
Wei Shang ◽  
Fang Wu ◽  
Yuanyuan Wang ◽  
Amin Rabiei Baboukani ◽  
Yuqing Wen ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Graphene Oxide ◽  
Magnesium Alloys ◽  
Composite Coatings ◽  
Oxide Composite ◽  
Micro Arc Oxidation

Properties of Electrodeposited Ni-SiC Composite Coatings on MB8 Wrought Magnesium Alloys

2011 ◽  
Vol 314-316 ◽  
pp. 181-186
Author(s):  
Xue Song Li ◽  
Li Min Wang ◽  
You Yang ◽  
Yue Yang ◽  
Hua Wu
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
State Of The Art ◽  
Composite Coatings ◽  
Corrosion And Wear ◽  
Experimental Results ◽  
Nanocomposite Coatings ◽  
Chemical Compositions ◽  
Good Corrosion Resistance

Ni–SiC nanocomposite coatings with reinforcing SiC nano-particulates were prepared by electrodeposition on MB8 wrought magnesium alloys. The microstructure, chemical compositions, hardness, corrosion resistance, and wear resistance of resulting composites were investigated respectively. This article details the state of the art in coating technologies, applied to magnesium based substrates for improved corrosion and wear resistance.The experimental results show that, uniform and compact coatings with good corrosion resistance can be obtained on MB8 wrought magnesium alloys. The wear resistance of the coatings were observed to be superior to hard chromium coatings.

Improvement of the Corrosion Resistance of Biomedical Magnesium Alloys in the Ringer’s Solution Using Protective Coatings

2015 ◽  
Vol 227 ◽  
pp. 459-462
Author(s):  
Iwona Kot ◽  
Halina Krawiec
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Electrochemical Impedance ◽  
Protective Coatings ◽  
Corrosion Behaviour ◽  
Composite Coatings ◽  
Electrochemical Behaviour ◽  
Dip Coating ◽  
Biodegradable Implant ◽  
Ringer’S Solution

The corrosion resistance of magnesium alloys depends on their microstructure, especially the presence of different intermetallic phases and precipitates. In this paper, the electrochemical behaviour of Mg1Ca and Mg1Ca1Si magnesium alloys has been investigated in the Ringer’s solution at 37 °C. In order to improve the corrosion resistance of these magnesium alloys composite coatings were fabricated by modification of a chitosan layer. The coatings were prepared by dip-coating in a chitosan solution and then modified by electrochemical deposition of a layer from a solution containing fluorine ions and water glass. The electrochemical performance of chitosan and chitosan modified coated alloys was evaluated by linear sweep voltamperometry and electrochemical impedance spectroscopy. The coated magnesium alloys possess suitable corrosion behaviour for the application as biodegradable implant material.

Microstructure and Corrosion Resistance Behavior of Composite Micro-Arc Oxidation and Sio2 Coatings on Magnesium Alloys

2010 ◽  
Vol 160-162 ◽  
pp. 1834-1838 ◽  
Author(s):  
Yan Feng Ge ◽  
Bai Ling Jiang ◽  
Zhi Yuan Yang ◽  
Yu Lei Li
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Potentiodynamic Polarization ◽  
Composite Coatings ◽  
Corrosion Process ◽  
Sio2 Layer ◽  
Xps Analysis ◽  
Micro Arc Oxidation

SiO2 sol sealing agent was developed by hydrolyzing of organic alkoxide, and protective composite coatings were obtained on magnesium alloys AZ31B by micro-arc oxidation (MAO) treatment plus a top coating with sealing agent using dipping-costing technique. SEM observations revealed that SiO2 sol immersed into pores and uniformly covered the surface of MAO coating. XPS analysis indicated that an inorganic SiO2 layer has formed on the surface of MAO coating. The results of potentiodynamic polarization tests showed that corrosion resistance of AZ31B alloys with composite coatings was evidently superior to that of merely MAO coating. The SiO2 layer provided corrosion protection by physically sealing the pores on the MAO coating and acting as a barrier. The composite coatings could suppress the corrosion process by preventing the transferring or diffusing of corrosive ions between magnesium alloys substrate and solution.

Studies and Research on the Corrosion Behavior of Ni-Al2O3 Compound Coatings Obtained by Electrochemical Methods

2020 ◽  
Vol 43 (3) ◽  
pp. 21-25
Author(s):  
Simona BOICIUC ◽  
◽  
◽  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Corrosion Behaviour ◽  
Composite Coatings ◽  
Point Of View ◽  
Electrochemical Methods ◽  
Dispersed Phase ◽  
Nickel Matrix ◽  
Technical Alumina ◽  
Compound Coatings

The undertaken research which is described in this paper aims at the corrosion behaviour of composite coatings in nickel matrix using as dispersed phase technical alumina with dimensions of 5 μm and their characterization from a microstructural point of view. The corrosion resistance in the saline fog of the coatings is influenced by the microstructure, the stresses developed in the layer and the roughness.

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