Structure and Electrochemical Properties of DLC/SiC Films on the Surface of Magnesium Alloy by Plasma Immersion Ion Deposition

2013 ◽  
Vol 750 ◽  
pp. 298-301
Author(s):  
Yuan Yuan Guo ◽  
Hong Yang Zhao ◽  
Dong Ying Ju ◽  
Alan Hase ◽  
Rong Hua Wei
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Transition Layer ◽  
Corrosion Potential ◽  
Surface Hardness ◽  
Dlc Film ◽  
Electrochemical Tests ◽  
Magnesium Alloy Az31 ◽  
Sic Films ◽  
Ion Deposition

DLC/SiC films (SiC as a transition layer) were prepared on the surface of magnesium alloy (AZ31) using a plasma immersion ion deposition (PIID) process. A dense and smooth DLC film can be observed by SEM. The surface hardness can be improved to 11.45GPa by deposition of the DLC film. Electrochemical tests show that the corrosion potential of AZ31 with DLC film is increased from -1.7V to -0.6V, which indicates that the DLC film improves the corrosion resistance of Mg alloy.

Unusual anti-bacterial behavior and corrosion resistance of magnesium alloy coated with diamond-like carbon

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14756-14762 ◽  
Author(s):  
Hongqing Feng ◽  
Xiaolin Zhang ◽  
Guosong Wu ◽  
Weihong Jin ◽  
Qi Hao ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Diamond Like Carbon ◽  
Combined Effects ◽  
Dlc Film ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Bacteria Adhesion ◽  
Local Release

A corrosion protective DLC film is deposited on magnesium alloy AZ31, and exhibits strong anti-bacterial ability caused by the combined effects of the bacteria adhesion favorable surface and the local release of killing elements from the substrate.

scholarly journals In vitro corrosion resistance of layer-by-layer assembled polyacrylic acid multilayers induced Ca–P coating on magnesium alloy AZ31

2020 ◽  
Vol 5 (1) ◽  
pp. 153-163 ◽  
Author(s):  
Lan-Yue Cui ◽  
Shen-Cong Cheng ◽  
Lu-Xian Liang ◽  
Jing-Chao Zhang ◽  
Shuo-Qi Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Polyacrylic Acid ◽  
Layer By Layer ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Corrosion resistance of in-situ growth of nano-sized Mg(OH)2 on micro-arc oxidized magnesium alloy AZ31—Influence of EDTA

2019 ◽  
Vol 35 (6) ◽  
pp. 1088-1098 ◽  
Author(s):  
Chang-Yang Li ◽  
Xiao-Li Fan ◽  
Rong-Chang Zeng ◽  
Lan-Yue Cui ◽  
Shuo-Qi Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
In Situ Growth ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

scholarly journals Corrosion Behaviour of Preserved PEO Coating on AZ31 Magnesium Alloy

2020 ◽  
Vol 23 (2) ◽  
pp. B76-B88
Author(s):  
Filip Pastorek ◽  
Milan Štrbák ◽  
Daniel Kajánek ◽  
Martina Jacková ◽  
Jana Pastorková ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Treatment Process ◽  
Corrosion Behaviour ◽  
Salt Spray ◽  
Az31 Magnesium Alloy ◽  
Electrochemical Tests ◽  
Marine Transport ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

A surface treatment process, composed of plasma electrolytic oxidation (PEO) and sealing by temporary oil preservation system containing corrosion inhibitors, was performed on AZ31 magnesium alloy in order to improve its corrosion resistance in environments containing chlorides. Both atmospheric and immersion conditions were evaluated by electrochemical tests in 0.1M NaCl solution together with salt spray test according to STN EN ISO 9227 standard. The obtained results confirmed significant improvement of corrosion resistance reached by the PEO sealing in aggressive environments compared to the pure PEO coating on AZ31 surface. Hence, such a duplex coating is a very perspective alternative for magnesium alloy applications in severe conditions or for temporary protection of magnesium products coated by the PEO during marine transport.

scholarly journals Influence of Elements on the Corrosion Resistance of DLC Films

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Nutthanun Moolsradoo ◽  
Shuichi Watanabe
Keyword(s):  
Corrosion Resistance ◽  
Silicon Content ◽  
Corrosion Potential ◽  
Film Structure ◽  
Dlc Film ◽  
Hardness Tester ◽  
Potential Value ◽  
Corrosion Resistance Property ◽  
Nanoindentation Hardness ◽  
Silicon Silicon

Pure DLC, Si-DLC, and Si-N-DLC films deposited from C2H2, C2H2 : TMS and C2H2 : TMS : N2 mixtures were used to study the effects of the elemental contents (silicon, silicon-nitrogen) on deposition and corrosion resistance properties. The films were prepared on Si (100) wafers using the plasma-based ion implantation (PBII) technique. The film structure was analyzed using Raman spectroscopy. The composition at the top surface of the films was measured using energy dispersive X-ray spectroscopy (EDS). The hardness and elastic modulus of the films were measured using a nanoindentation hardness tester. The corrosion performance of the films was conducted using potentiodynamic polarization experiments in an aqueous 0.05 M NaCl solution. The results indicate that the hardness and corrosion resistance of the Si-DLC film increase as the silicon content increases. This is due to the increase of the sp3 cluster. The corrosion resistance of a pure DLC film increases when silicon and silicon-nitrogen are doped into the film. Si-DLC films with a silicon content of 40 at.% had a corrosion potential value of 0.61 V, while a Si-N-DLC film with a silicon and nitrogen content of 19.3 at.% and 1 at.% shows a corrosion potential value of 0.85 V, which is a considerable improvement in the corrosion resistance property.

Effect of Electron Beam Treatment on the Surface Properties of AZ31B Magnesium Alloy

2012 ◽  
Vol 424-425 ◽  
pp. 1016-1019 ◽  
Author(s):  
Hong Ye ◽  
Rui Chen ◽  
Zhong Lin Yan
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
Magnesium Alloy ◽  
High Speed ◽  
Surface Hardness ◽  
Optical Microscope ◽  
Wear Volume ◽  
Az31b Magnesium Alloy ◽  
Pulsed Electron Beam ◽  
Modified Layer

AZ31B magnesium alloy were irradiated by a high current pulsed electron beam (HCPEB) device with pulse times 10, 15 and 20 respectively. The morphology of the surface and cross-section of modified layer were investigated by optical microscope. The corrosion resistance of modified layer were tested by EG&G M273 potentiostat in 5% NaCl solution. Wear resistance were tested by HRS-2 high speed reciprocation frictional testing machines. The results indicated that magnesium alloy surface hardness obviously enhances, the wear volume reduces 7%, the corrosion resistance also improves obviously after electron beam processing.

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