Protective Coatings on Magnesium Alloys Intended for Use on Components of Airborne Vehicles

1961 ◽  
Author(s):  
DOW METAL PRODUCTS CO MIDLAND MI
Keyword(s):  
Magnesium Alloys ◽  
Protective Coatings

Incorporation of Composite Zirconia-Silica Nanoparticles into PEO-Coatings on Magnesium Alloys

2018 ◽  
Vol 386 ◽  
pp. 321-325
Author(s):  
Igor M. Imshinetsky ◽  
Sergey V. Gnedenkov ◽  
Sergey L. Sinebryukhov ◽  
Dmitry V. Mashtalyar ◽  
Andrew V. Samokhin ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Silica Nanoparticles ◽  
Magnesium Alloys ◽  
Plasma Electrolytic Oxidation ◽  
Protective Coatings ◽  
Surface Layers ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Peo Coatings ◽  
The Way

The way of protective coatings formation on MA8 magnesium alloy by plasma electrolytic oxidation (PEO) in the electrolyte containing composite zirconia-silica nanoparticles has been developed. It is shown that the coatings, which contain nanoparticles, have a significant advantage in comparison with the surface layers obtained without their use.

scholarly journals Cold-Sprayed Aluminum-Silica Composite Coatings Enhance Antiwear/Anticorrosion Performances of AZ31 Magnesium Alloy

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Lijia Fang ◽  
Yuting Xu ◽  
Li Gao ◽  
Xinkun Suo ◽  
Jianguo Gong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Magnesium Alloys ◽  
Cold Spray ◽  
Protective Coatings ◽  
Composite Coatings ◽  
Silica Content ◽  
Protective Layers ◽  
Structural Applications ◽  
Enhanced Surface

Extensive efforts devoted in recent years to booming structural applications of lightweight magnesium alloys are usually undermined by their insufficient surface properties. Surface modification is therefore necessarily required in most cases for enhanced surface integrity of the alloys. Here, we report construction of aluminum-silica protective layers by cold spray on AZ31 magnesium alloys, and the effect of the silica additives on microstructure and mechanical properties of the coatings was examined. The ceramic particles were dispersed evenly in the coatings, and increased silica content gives rise to enhanced adhesion, antiwear performances, and microhardness of the coatings. The even distribution of silica in the coatings altered the wear regimes from adhesive to abrasive wear. The cold spray fabrication of the aluminum-silica protective coatings would facilitate structural applications of the magnesium alloys.

scholarly journals The effect of electrolysis conditions during microarc oxidation on the phase-structural state, hardness and corrosion resistance of magnesium alloys

2020 ◽  
Vol 21 (3) ◽  
pp. 545-551
Author(s):  
V.V. Subbotina ◽  
V.V. Belozerov
Keyword(s):  
Corrosion Resistance ◽  
Phase Composition ◽  
Magnesium Alloys ◽  
Protective Coatings ◽  
Microarc Oxidation ◽  
High Hardness ◽  
Ceramic Coatings ◽  
Functional Layer ◽  
Different Types ◽  
Spinel Mgal2o4

By the method of microarc oxidation for different types of electrolytes (which include KOH, Na2SiO3, Н2О2, NaOH, NaAlO2, Na5P3O10, NaF) and electrolysis conditions, multifunctional ceramic coatings on a magnesium alloy were obtained. The phase composition of the coating includes magnesium oxide (MgO), spinel MgAl2O4, Mg2SiO4 and Мg3(РО4)2 compounds. The phase composition of the coatings is determined by the composition of the electrolyte. The obtained MAO coatings provide high hardness, which is 1500 to 7300 MPa, as well as high corrosion resistance. The results obtained make it possible to recommend MAO coatings on magnesium alloys both as an external (functional) layer and for the formation of an underlayer for the subsequent application of protective coatings (varnishes, polymers, polytetrafluoroethylene, in particular).

Chrome-free neodymium-based protective coatings for magnesium alloys

2011 ◽  
Vol 65 (8) ◽  
pp. 1145-1147 ◽  
Author(s):  
Guo Jin ◽  
Yuyun Yang ◽  
Xiufang Cui ◽  
Erbao Liu ◽  
Zhongyu Wang ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Protective Coatings

scholarly journals Promising Methods for Corrosion Protection of Magnesium Alloys in the Case of Mg-Al, Mg-Mn-Ce and Mg-Zn-Zr: A Recent Progress Review

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1133
Author(s):  
Pavel Predko ◽  
Dragan Rajnovic ◽  
Maria Luisa Grilli ◽  
Bogdan O. Postolnyi ◽  
Vjaceslavs Zemcenkovs ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Recent Progress ◽  
Protective Coatings ◽  
Chemical Reactivity ◽  
Short Review ◽  
Industrial Applications ◽  
Organic Polymer ◽  
Multilayer Systems ◽  
Specific Strength

High specific strength characteristics make magnesium alloys widely demanded in many industrial applications such as aviation, astronautics, military, automotive, bio-medicine, energy, etc. However, the high chemical reactivity of magnesium alloys significantly limits their applicability in aggressive environments. Therefore, the development of effective technology for corrosion protection is an urgent task to ensure the use of magnesium-containing structures in various fields of application. The present paper is aimed to provide a short review of recent achievements in corrosion protection of magnesium alloys, both surface treatments and coatings, with particular focus on Mg-Al-Mn-Ce, Mg-Al-Zn-Mn and Mg-Zn-Zr alloys, because of their wide application in the transport industry. Recent progress was made during the last decade in the development of protective coatings (metals, ceramics, organic/polymer, both single layers and multilayer systems) fabricated by different deposition techniques such as anodization, physical vapour deposition, laser processes and plasma electrolytic oxidation.

A Brief Review about Surface Treatment of Magnesium Alloys

2012 ◽  
Vol 724 ◽  
pp. 307-310 ◽  
Author(s):  
Yu Bai ◽  
Fang Li Yu ◽  
Jun Du ◽  
Wen Xian Wang ◽  
Ze Qin Cui ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Protective Coatings ◽  
Corrosion And Wear ◽  
New Materials ◽  
Paper Briefly ◽  
Effective Protection ◽  
Widespread Application ◽  
Specific Strength ◽  
Aerospace Applications ◽  
High Specific Strength

Due to the low density and high specific strength, magnesium and its alloys have been extensively used in the automobile and aerospace applications, where the weight reduction is critical. However, they are highly prone to corrosion, which has greatly limited their application in the automotive and aerospace industries. This paper briefly reviews the technologies for improving the corrosion and wear resistance of magnesium alloys and finds that the widespread application of magnesium alloys is still limited by the lack of proper protective coatings. Therefore, there is still a need to explore new materials and methods for the effective protection of magnesium and its alloys.

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