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

Influence of Laser Parameters on Magnesium Alloy Surface Modification

2011 ◽  
Vol 704-705 ◽  
pp. 1216-1218
Author(s):  
Kai Sun ◽  
Sen Yang ◽  
Feng Xia Liu
Keyword(s):  
Corrosion Resistance ◽  
Surface Modification ◽  
Magnesium Alloy ◽  
Laser Power ◽  
Surface Engineering ◽  
Laser Surface ◽  
Alloy Surface ◽  
Technological Parameters ◽  
Az91d Magnesium Alloy ◽  
Surface Modified

It’s an important content to treat on the magnesium alloy surface for improving it’s abrasion performance and corrosion resistance in the field of surface engineering nowerdays. This research takes the AZ91D magnesium alloy and Aluminum as a substrate and powdered alloy respectively.It takes the laser surface modified technology as the method so that to enhance the corrosion resistance of the magnesium alloy surface.The optimization technological parameters are obtained by discussing the influence rule on laser power to corrosion resistance of AZ91D substrate and Mg-Al modified level.

scholarly journals Analysis and Development Review of Metal and Metal/Ceramic Composite Coating Prepared on Magnesium Alloy Surface

2022 ◽  
Vol 2152 (1) ◽  
pp. 012025
Author(s):  
Haichuan Zhang ◽  
Xuemei Pu ◽  
Hua Yang ◽  
Yifan Jiang ◽  
Xiao Wang
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Magnetron Sputtering ◽  
Ceramic Composite ◽  
Ceramic Coatings ◽  
Research Progress ◽  
Alloy Surface ◽  
Metal Ceramic ◽  
The Impact

Abstract Magnesium, as one of the lightest metal structural materials, also has its advantages such as high specific strength, good electromagnetic shielding characteristics, good processability and easy recycling, so it has a wide application prospect. However, its poor insulation, corrosion resistance, wear resistance and other properties limited it to be an alloy that can be used in a large area. Therefore, how to improve the corrosion resistance and wear resistance of magnesium alloy is the key to promote the development of magnesium alloy field. This paper reviews the research progress of using magnetron sputtering technology to prepare ceramic composite film on the surface of magnesium alloy and briefly introduces the film corrosion resistance and wear resistance of the thin films. It analyzes the impact of metal transition layer, process parameters and other factors on structure and properties of metal / ceramic coatings and prospects for the development prospects of magnetron sputtering in the field of magnesium alloy surface protection.

scholarly journals Construction of Chi(Zn/BMP2)/HA composite coating on AZ31B magnesium alloy surface to improve the corrosion resistance and biocompatibility

2021 ◽  
Vol 10 (1) ◽  
pp. 870-882
Author(s):  
Qiuyang Zhang ◽  
Li Zhang ◽  
Minhui Yang ◽  
Qingxiang Hong ◽  
Zhongmei Yang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Composite Coating ◽  
Magnesium Alloys ◽  
Bone Morphogenetic Protein 2 ◽  
Alloy Surface ◽  
Zinc Ions ◽  
Hexadecanoic Acid ◽  
Az31b Magnesium Alloy ◽  
E Coli

Abstract As biodegradable orthopedic implant materials, magnesium alloys have been attracted enough attentions recently. However, too fast degradation in vivo, limited biocompatibilities, and insufficient antibacterial properties are three main challenges at present. In order to solve these problems, a multifunctional composite coating of Chi(Zn/BMP2)/HA was constructed on AZ31B magnesium alloy surface, successively by the alkali heating treatment, self-assembly of 16-phosphonyl-hexadecanoic acid, in situ immobilization of Chi(Zn/BMP2) (chitosan, zinc ions, and bone morphogenetic protein 2), and the deposition of HA (hydroxyapatite). The results of ATR-FTIR (attenuated total reflection Fourier transform infrared spectrum) spectra and elemental compositions confirmed that 16-phosphonyl-hexadecanoic acid, Chi(Zn/BMP2), and HA were successfully immobilized on the surface. Compared with Mg, Mg-OH, Mg-16, and Mg-Chi(Zn/BMP2), Mg-Chi(Zn/BMP2)/HA with the concave–convex structure surface significantly enhanced the hydrophilicity and corrosion resistance. On the other hand, Mg-Chi(Zn/BMP2)/HA coating also showed excellent biocompatibilities, which not only significantly promoted the osteoblast adhesion and proliferation, but also upregulated ALP and OCN expression of osteoblasts. Furthermore, due to the synergistic antibacterial effect of zinc ions and chitosan, Mg-Chi(Zn/BMP2)/HA showed a good antibacterial property against Escherichia coli (E. coli). Therefore, it can be said that the method used in this work has a good application prospect in improving the corrosion resistance, biocompatibility of magnesium alloys, and inhibiting infections against E. coli.

Superhydrophobic magnesium alloy surface with corrosion resistance

2021 ◽  
Author(s):  
Qianqian Cai ◽  
Jinkai Xu ◽  
Zhongxu Lian ◽  
Zhanjiang Yu ◽  
Huadong Yu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Alloy Surface

scholarly journals Reinforcing Mechanism of WC Particles in Fe-Based Amorphous Matrix Coating on Magnesium Alloy Surface

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6571
Author(s):  
Haoran Zhang ◽  
Hongyan Wu ◽  
Shanlin Wang ◽  
Yuhua Chen ◽  
Yongde Huang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Composite Coating ◽  
Wear Behavior ◽  
Amorphous Structure ◽  
Alloy Surface ◽  
Amorphous Coating ◽  
Hvof Spraying ◽  
Amorphous Content ◽  
Wear And Corrosion

To protect magnesium alloy surfaces from wear and corrosion, an Fe-based amorphous coating was prepared on WE43 through the Ni60 interlayer by high-velocity oxygen-fuel (HVOF) spraying. The porosity was ~1%, and the amorphous content exceeded 90%. The wear and corrosion resistance of the composite coating with WC particles wrapped in a Ni layer as the reinforcing phase were compared with that of the completely amorphous coating. The friction coefficient (COF) of the composite coating was 0.3, which is only half of that of the WE43 substrate, and the composite coating exhibited a more stable wear behavior than the completely amorphous coating. The corrosion tendency of the composite coating is lower than that of stainless steel, with a corrosion potential of −0.331 V, and the addition of WC particles did not deteriorate the corrosion resistance considerably. The bonding mechanism of the bonding interface between the amorphous structure and the particles of the reinforcing phase was investigated by transmission electron microscopy (TEM). Reinforcing particles were confirmed to form metallurgical bonding with the coating. It was found that the Ni layer showed excellent bonding performance in the form of a mixture that is amorphous and nanocrystalline. Therefore, the Fe-based amorphous composite coating on a magnesium alloy surface shows a potential protective effect.

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.

ALUMINUM 3004

Alloy Digest ◽  
1974 ◽  
Vol 23 (4) ◽  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Magnesium Alloy ◽  
Cold Working ◽  
Heat Treating ◽  
Temperature Performance ◽  
Good Workability ◽  
Manganese Magnesium

Abstract ALUMINUM 3004 is nominally an aluminum-manganese-magnesium alloy which cannot be hardened by heat treatment; however, it can be strain hardened by cold working. It has higher strength than Aluminum 3003 and good workability, weldability and resistance to corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-51. Producer or source: Various aluminum companies. Originally published June 1957, revised April 1974.

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