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Ce元素的添加對Mg-1.2Ca合金氧化行為和表面張力的影響
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1.河北工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院;2.河北工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院

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Oxidation behavior and surface tension of Mg-1.2Ca alloy with Ce addition
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School of Materials Science and Engineering, Hebei University of Technology

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    摘要:

    摘 要：為了發(fā)展高性能阻燃鎂合金，本文對工業(yè)純鎂在添加元素Ca和Ce的氧化性能進(jìn)行了研究。結(jié)果表明隨著Ce含量從0到1.5wt.%的增加，Mg-1.2Ca合金的燃點(diǎn)不斷提高，熔體表面張力不斷下降。Mg-1.2Ca-1.2Ce的燃點(diǎn)可以達(dá)到780℃，而且可以在大氣中不添加任何保護(hù)的情況下進(jìn)行熔煉。隨著Ce含量的增加Mg-1.2Ca熔體氧化膜變得光滑而致密，可以很好地起到阻止氧化、燃燒的效果。通過檢測和分析，Mg-1.2Ca-1.2Ce的氧化膜可以分成三層：外層是疏松的MgO，中間層是MgO-CaO復(fù)合氧化膜，內(nèi)層是MgO-Ce2O3復(fù)合氧化膜。

    Abstract:

    Abstract: The effect of alloying element Ce on oxidation behavior and surface tension of Mg-1.2Ca alloy was investigated in order to have a further develop for the ignition-proof magnesium alloys. As the content of Ce range from 0 to 1.5wt.%, the ignition point of Mg-1.2Ca increase rapidly while the surface tension decline. The ignition point of Mg-1.2Ca-1.2Ce alloy can reach to 780℃. And the Mg-1.2Ca-1.2Ce alloy can be melt at the atmosphere without any protection method. The oxidation film of Mg-1.2Ca melt has turned to fine and close structure from porous structure with Ce addition, which can prevent magnesium alloys from further oxidation and burning. According to the test and analysis, oxide film of Mg-1.2Ca-1.2Ce alloy consists of three layers which are loose MgO in the outer layer, MgO-CaO composite oxide film in the middle layer and MgO-Ce2O3 composite oxide film in the inner layer respectively.

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引用本文

秦林,丁儉. Ce元素的添加對Mg-1.2Ca合金氧化行為和表面張力的影響[J].稀有金屬材料與工程,2016,45(1):23~27.[Qin Lin, Ding Jian. Oxidation behavior and surface tension of Mg-1.2Ca alloy with Ce addition[J]. Rare Metal Materials and Engineering,2016,45(1):23~27.]
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  • 收稿日期:2013-12-22
  • 最后修改日期:2014-02-18
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  • 在線發(fā)布日期: 2019-01-04
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