scholarly journals High Functionalization of Magnesium Alloy Surface by Superhydrophobic Treatment

10.5772/13721 ◽  
2011 ◽  
Author(s):  
Takahiro Ishizaki ◽  
Sunhyung Lee ◽  
Katsuya Teshim
Keyword(s):  
Magnesium Alloy ◽  
Alloy Surface

Utilisation of High-Energy Heat Sources in Magnesium Alloy Surface Layer Treatment

2013 ◽  
Vol 58 (2) ◽  
pp. 619-624 ◽  
Author(s):  
M. Szafarska ◽  
J. Iwaszko ◽  
K. Kudła ◽  
I. Łegowik
Keyword(s):  
Surface Layer ◽  
Magnesium Alloy ◽  
Physicochemical Properties ◽  
Treatment Effectiveness ◽  
High Energy ◽  
Alloy Surface ◽  
Heat Sources ◽  
X Ray ◽  
Additional Equipment ◽  
Alloy Surface Layer

The main aim of the study was the evaluation of magnesium alloy surface treatment effectiveness using high-energy heat sources, i.e. a Yb-YAG Disk Laser and the GTAW method. The AZ91 and AM60 commercial magnesium alloys were subject to surface layer modification. Because of the physicochemical properties of the materials studied in case of the GTAW method, it was necessary to provide the welding stand with additional equipment. A novel two-torch set with torches operating in tandem was developed within the experiment. The effectiveness of specimen remelting using a laser and the GTAW method was verified based on macro- and microscopic examinations as well as in X-ray phase analysis and hardness measurements. In addition, the remelting parameters were optimised. The proposed treatment methodology enabled the achieving of the intended result and effective modification of a magnesium alloy surface layer.

Formation of a phosphoric acid compound film on an AZ31 magnesium alloy surface using cavitation bubbles

2021 ◽  
pp. 101194
Author(s):  
Masataka Ijiri ◽  
Koji Yamaguchi ◽  
Shoichi Kikuchi ◽  
Fumihiro Kato ◽  
Yui Kunieda ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Phosphoric Acid ◽  
Az31 Magnesium Alloy ◽  
Alloy Surface ◽  
Cavitation Bubbles ◽  
Acid Compound

scholarly journals Structural Aspects of Remelting of the AZ91 Magnesium Alloy Surface Layer

2016 ◽  
Vol 16 (1) ◽  
pp. 13-18
Author(s):  
J. Iwaszko ◽  
M. Strzelecka
Keyword(s):  
Surface Layer ◽  
Magnesium Alloy ◽  
Structural Changes ◽  
Continuous Wave ◽  
Sample Surface ◽  
Alloy Surface ◽  
Az91 Alloy ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium ◽  
Alloy Surface Layer

Abstract In this study, modification of the AZ91 magnesium alloy surface layer with a CO2 continuous wave operation laser has been taken on. The extent and character of structural changes generated in the surface layer of the material was being assessed on the basis of both macro- and microscopy investigations, and the EDX analysis. Considerable changes in the structure of the AZ91 alloy surface layer and the morphology of phases have been found. The remelting processing was accompanied by a strong refinement of the structure and a more uniform distribution of individual phases. The conducted investigations showed that the remelting zone dimensions are a result of the process parameters, and that they can be controlled by an appropriate combination of basic remelting parameters, i.e. the laser power, the distance from the sample surface, and the scanning rate. The investigations and the obtained results revealed the possibility of an effective modification of the AZ91 magnesium alloy surface layer in the process of remelting carried out with a CO2 laser beam.

Phenomenon and Analysis of Periodic Ripple Structure on Magnesium Alloy Surface Induced by Laser Shock Processing

2010 ◽  
Vol 30 (9) ◽  
pp. 2613-2619
Author(s):  
张永康 Zhang Yongkang ◽  
裴旭 Pei Xu ◽  
陈菊芳 Chen Jufang ◽  
顾永玉 Gu Yongyu ◽  
任爱国 Ren Aiguo ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Alloy Surface ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Ripple Structure ◽  
Shock Processing

Hydrothermal growth of hydroxyapatite and ZnO bilayered nanoarrays on magnesium alloy surface with antibacterial activities

2019 ◽  
Vol 14 (1) ◽  
pp. 14-23
Author(s):  
Mengke Peng ◽  
Fenyan Hu ◽  
Minting Du ◽  
Bingjie Mai ◽  
Shurong Zheng ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Antibacterial Activities ◽  
Hydrothermal Growth ◽  
Alloy Surface

A novel in situ deposition of hydroxyapatite nanoplates using anodization/hydrothermal process onto magnesium alloy surface towards third generation biomaterials

2016 ◽  
Vol 164 ◽  
pp. 144-147 ◽  
Author(s):  
Hamouda M. Mousa ◽  
Arjun Prasad Tiwari ◽  
Jinwoo Kim ◽  
Surya Prasad Adhikari ◽  
Chan Hee Park ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Hydrothermal Process ◽  
Alloy Surface ◽  
Third Generation ◽  
In Situ Deposition

Effect of Na2CO3 on corrosion resistance of cerium conversion film on Mg–Gd–Y–Zr magnesium alloy surface

2008 ◽  
Vol 59 (9) ◽  
pp. 955-958 ◽  
Author(s):  
Jian-long Yi ◽  
Xin-ming Zhang ◽  
Ming-an Chen ◽  
Rui Gu
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Alloy Surface

Investigation of the Surface Modification on Biomedical Magnesium Alloy

2015 ◽  
Vol 1095 ◽  
pp. 295-298 ◽  
Author(s):  
You Dong Xu ◽  
Jian Qing Xiong ◽  
Shi Guang Xu ◽  
Jun Jun Zhang
Keyword(s):  
Magnesium Alloy ◽  
Body Fluid ◽  
Energy Dispersive Spectrometry ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Conversion Coating ◽  
Alloy Surface ◽  
Material Surface ◽  
Original Material ◽  
Cell Toxicity

In this work, the green chemistry conversion coating on AZ31 magnesium alloy surface was made and studied by means of Ce (SO4)2·2(NH4)2SO4·4H2O and MnSO4 as inhibitor, H2O2 as oxidant, NaCl as accelerator, CH3COOH as stabilizer. The coating was evaluated in simulated body fluid (SBF) with pH=7.4 at 37°C by using electrochemical impedance spectroscopy (EIS). The results show the conversion coating resistance, for the untreated or treated alloy, is 0.75 kΩ·cm2 and 3.28 kΩ·cm2 respectively. It indicates the conversion coating treated surface presents better corrosion behaviour in SBF than the original material surface. The morphologies and composition the coating were examined by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) respectively. The result indicates that the Ce-Mn conversion coating was made on magnesium alloy surface. Biocompatibility of conversion coating was investigated by use of cell toxicity. Cell culture has shown that the magnesium alloy has good cytocompatibility.

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