Magnesium‐Based Alloys

Neite, G.; Kubota, Kôhei; Higashi, Kenji; Hehmann, F.

doi:10.1002/9783527603978.mst0082

Cited by 31 publications

(25 citation statements)

References 76 publications

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“…Furthermore, it was reported that the corrosion potential of β-phase in 5% NaCl saturated solution with Mg(OH) 2 was approximately 490 and 420 mV more cathodic to pure Mg and AZ91 alloy, respectively [13]. The solubility of rare earths (RE) in the magnesium matrix is very limited in the presence of aluminum, but the intermetallic Al-RE formed is electrochemically passive and does not significantly affect the corrosion rate [18].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media

Öteyaka

Ghali

Tremblay

2012

International Journal of Corrosion

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Corrosion behaviour of AZ and ZA magnesium alloys in untreated, aerated, and deaerated chloride media was investigated. The influence of impurity, alloying element, and oxygen on corrosion potential, rate, and pitting was examined in alkaline media saturated with Mg(OH) 2 at pH 9 and 25• C. After 8 h immersion, slightly less active corrosion potentials were generally observed in deaerated than oxygen containing solutions. AZ91D and ZA104 alloys recorded much lower corrosion rates in deaerated medium as compared to AZ91E, ZAC 10403 (0.3Ca), and ZACS1040305 (0.3Ca+ 0.5Sr). Generally, ZAC alloy showed the highest corrosion rate, followed by ZACS alloy, and both showed a constant value in the three media with or without oxygen. The effect of oxygen is then dependent on the alloy properties and is not a simple acceleration of the cathodic reaction but could cause also inhibition and/or passivation. Pit depth and distribution were influenced by alloy composition. The pits were found deeper and more localized on AZ and more uniformly dispersed on ZA alloy surfaces.

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Section: Introductionmentioning

confidence: 99%

Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media

Öteyaka

Ghali

Tremblay

2012

International Journal of Corrosion

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“…[2] Magnesium is the 6 th most abundant element in the earth crust (2 mass%) and the 3 rd most dissolved mineral in seawater (1.1 kg/m 3 ). [3] Currently, the use of magnesium and its alloys are still limited to niche applications and aluminum alloys remains the preferred choice amongst materials where lightweight properties are desired. Other advantages of magnesium include comparable strength value with aluminum, high damping capacity, recyclable, most easily machinable of all structural metals and less energy required in the production of magnesium compared to aluminum.…”

mentioning

confidence: 99%

“…Other advantages of magnesium include comparable strength value with aluminum, high damping capacity, recyclable, most easily machinable of all structural metals and less energy required in the production of magnesium compared to aluminum. [3][4] The major limiting factors for the limited use of magnesium and its alloys include its low stiffness and ductility, limited strength and creep resistance at elevated temperatures and low electrical potential making it prone to corrosion. These limitations are often circumvented by the addition of stiffer and stronger ceramic and/or metallic reinforcements.…”

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confidence: 99%

Improving Overall Mechanical Performance of Magnesium Using Nano‐Alumina Reinforcement and Energy Efficient Microwave Assisted Processing Route

Wong

Gupta

2007

Adv Eng Mater

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Improving energy efficiency has been identified as the cheapest, fastest and most environmentally friendly way to meet the increasing demand in energy by the International Energy Agency (IEA). [1] This can be achieved through innovation, the adoption of new cost-effective technologies and a better use of existing energy-efficient technologies. One of the key areas targeted by IEA for improved energy efficiency lies in buildings, industry and transport. For industry, it was highlighted that there is huge potential to reduce energy consumption and CO 2 emission through increased energy recovery in materials-production processes and the adoption of new and more advanced processes and materials. Similarly in the transport sector, the use and development of lighter materials can reduce fuel consumption leading to improved energy efficiency.Magnesium is the lightest of all engineering metals with a density of 1.74 g/cm 3 which is lighter than aluminum (2.7 g/ cm 3 ) and steel (∼ 7.87 g/cm 3 ) and in close comparison with plastics (0.92-2.17). [2] Magnesium is the 6 th most abundant element in the earth crust (2 mass%) and the 3 rd most dissolved mineral in seawater (1.1 kg/m 3 ). [3] Currently, the use of magnesium and its alloys are still limited to niche applications and aluminum alloys remains the preferred choice amongst materials where lightweight properties are desired. Other advantages of magnesium include comparable strength value with aluminum, high damping capacity, recyclable, most easily machinable of all structural metals and less energy required in the production of magnesium compared to aluminum. [3][4] The major limiting factors for the limited use of magnesium and its alloys include its low stiffness and ductility, limited strength and creep resistance at elevated temperatures and low electrical potential making it prone to corrosion. These limitations are often circumvented by the addition of stiffer and stronger ceramic and/or metallic reinforcements. However, the addition of micron-size reinforcements generally deteriorates the intrinsic limited ductility of magnesium. In recent studies, it has been observed that the addition of nano-size reinforcements such ceramic oxides, SiC and carbon nanotubes can lead to a simultaneous increase in strength and ductility of magnesium. [5][6][7] Accordingly, the aim of this study was to develop lightweight and high performance Mg/Al 2 O 3 nanocomposites through the use of a cost-effective and energy efficient microwave sintering technique. Characterization studies were conducted following hot extrusion to evaluate the physical, microstructural and mechanical properties of the synthesized materials. Particular emphasis was placed to highlight the cost-effectiveness and energy efficiency of microwave sintering over conventional sintering and to correlate the addition of nano Al 2 O 3 particulates on the physical, microstructural and mechanical properties of pure magnesium. Results and Discussion Macrostructural CharacteristicsMacrostructural characterization con...

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“…Magnesium is an abundantly available element on planet earth (both land and water bodies) and in the universe [14][15][16]. Its availability is almost 13 times that of aluminum by mass and hence ensures the sustainability of its applications in aerospace sector.…”

Section: Justifying the Use Of Magnesiummentioning

confidence: 99%

Utilizing Magnesium based Materials to Reduce Green House Gas Emissions in Aerospace Sector

Gupta¹,

Gupta²

2017

AAOAJ

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This article highlights the importance of light weighting option in aerospace sector as an effective measure of reducing the carbon dioxide emission. Various methods of reduction in fuel consumption in aerospace sector are highlighted. Use of magnesium based materials as replacement for aluminum based materials and fiber based composites for light weighting is highlighted with an example. Myths of ignitability and flammability are dispelled by directing the attention of the readers to the inherent thermal properties of magnesium in bulk form and through highlighting the past and present use of magnesium based materials in both fighter and commercial aircrafts. Information is also provided on the availability of some coating techniques that can bring the corrosion resistance of magnesium based materials at par with aluminum based materials.

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Magnesium‐Based Alloys

Cited by 31 publications

References 76 publications

Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media

Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media

Improving Overall Mechanical Performance of Magnesium Using Nano‐Alumina Reinforcement and Energy Efficient Microwave Assisted Processing Route

Utilizing Magnesium based Materials to Reduce Green House Gas Emissions in Aerospace Sector

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