The high temperature oxidation and ignition behavior of Mg–Nd alloys part I: The oxidation of dilute alloys

Aydin, D.S.; Bayindir, Z.; Hoseini, Majid; Pekguleryuz, Mihriban

doi:10.1016/j.jallcom.2013.03.130

Cited by 86 publications

(45 citation statements)

References 37 publications

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“…Because of the exothermic nature of Mg burning, the ignition temperature has been measured as the temperature associated with a sharp increase of the alloy temperature [26,27,43] when the Mg alloy was subjected to a temperature ramp in air in a furnace. The ignition temperature of pure Mg ranged from 620 C to 650 C [45][46][47], which is close to or equal to the melting temperature of pure Mg of 650 C. For Mg alloys, ignition may occur at lower temperatures, either below or slightly above the solidus, because localized melting of the alloy significantly accelerates the Mg evaporation rate.…”

Section: Ignition and Burningmentioning

confidence: 84%

“…The ignition temperature of Mg increased with increasing Sr content. Redrawn from Aydin [46,147,178,180] and used with permission of Springer. AZ91-1.5Ca AZ91-1.5Ca-0.5Y AZ91-20ppmBe AZ91-60ppmBe Figure 25: Oxidation kinetics of AZ91-1.5Ca, AZ91-1.5Ca-0.5Y, AZ91-20 ppm (wt) Be and AZ91-60 ppm (wt) Be at 400 C in air for 300 min.…”

Section: Discussionmentioning

confidence: 99%

“…There were duplex MgO and SrO oxide layers on the Sr-containing alloys in both the solid and molten states after oxidation [178,180]. Unlike Ce, Nd and La [46,143,146,155], higher Sr contents led to higher ignition temperatures due to the high surface activity of Sr in liquid Mg [181]. Based on thermodynamic calculations [180], at 700…”

Section: Srmentioning

confidence: 99%

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Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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Highlights The oxidation behaviours of Mg alloys from low to high temperatures are reviewed. Characteristics of MgO during oxidation is discussed. Mechanisms of Mg oxidation is presented. Effect of various alloying elements is analysed. AbstractThis paper reviews (i) the oxidation of Mg alloys at elevated temperatures in air; (ii) the influence of alloying elements on the oxidation of Mg alloys; and (iii) the progress in the development of oxidation-resistant Mg alloys. Low oxidation rates have been shown by Mg alloys containing the alloying elements, Ca, Be and rare earth elements. However, these alloying elements may also decrease mechanical properties, such as ductility.

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Section: Ignition and Burningmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

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Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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“…Since the diffusion rate of Mg 2+ is faster than that of Y 3+ by its smaller radius [21], a thin film would form on the surface of Mg-Y-Sn and Mg-Y at 500 • C. MgO would form on the gas/oxide interface. The consumption of Mg leads to the decrease of Mg content on the oxide/metal interface.…”

Section: Thermodynamic Analysismentioning

confidence: 99%

High temperature oxidation behavior of Mg-Y-Sn, Mg-Y, Mg-Sn alloys and its effect on corrosion property

Jiang

Hong

et al. 2015

Applied Surface Science

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“…A detailed review of the REE on high temperature oxidation of Mg was recently published by Czerwinski [27], including Ca, Be, Sr and Ti, which readily oxidise when exposed to oxygen, give the magnesium alloy improved resistance to oxidation during melting. The high affinity to oxygen of those and all other rare earth elements are the basis of the REE [30][31][32]. Some examples of Ca, Be, Sr and Ti additions to molten Mg are given below.…”

Section: Reactive Element Effectmentioning

confidence: 99%

Melt Protection of Mg-Al Based Alloys

Balart

Patel

Fan

2016

Metals

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This paper reports the current status of Mg melt protection in view to identify near-future challenges, but also opportunities, for Mg melt protection of Mg-Al based alloys. The goal is to design and manufacture sustainable Mg alloys for resource efficiency, recycling and minimising waste. Among alternative cover gas technologies for Mg melt protection other than SF 6 : commercially available technologies containing-HFC-134a, fluorinated ketone and dilute SO 2 -and developed technologies containing solid CO 2 , BF 3 and SO 2 F 2 , can potentially produce toxic and/or corrosive by-products. On the other hand, additions of alkaline earth metal oxides to Mg and its alloys have developed a strong comparative advantage in the field of Mg melt protection. The near-future challenges and opportunities for Mg-Al based alloys include optimising and using CO 2 gas as feedstock for both melt protection and grain refinement and TiO 2 additions for melt protection.

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The high temperature oxidation and ignition behavior of Mg–Nd alloys part I: The oxidation of dilute alloys

Cited by 86 publications

References 37 publications

Oxidation of magnesium alloys at elevated temperatures in air: A review

Oxidation of magnesium alloys at elevated temperatures in air: A review

High temperature oxidation behavior of Mg-Y-Sn, Mg-Y, Mg-Sn alloys and its effect on corrosion property

Melt Protection of Mg-Al Based Alloys

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