Mg-Ca合金表面氧化行为的研究

卢庆亮; 闵光辉; 王常春; 于化顺; 李卫红

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Mg-Ca合金表面氧化行为的研究
Surface Oxidizing Behavior of Mg-Ca Alloy
2004年第6期页码：14-16
纸质出版日期： 2004 ，
DOI：

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[1]卢庆亮,闵光辉,王常春,于化顺,李卫红.Mg-Ca合金表面氧化行为的研究[J].特种铸造及有色合金,2004(06):14-16+76.

Lu Qingliang Min Guanghui Wang Changchun Yu Huashun. Surface Oxidizing Behavior of Mg-Ca Alloy[J]. Special Casting & Nonferrous Alloys, 2004,(6):14-16.
[1]卢庆亮,闵光辉,王常春,于化顺,李卫红.Mg-Ca合金表面氧化行为的研究[J].特种铸造及有色合金,2004(06):14-16+76. DOI：

Lu Qingliang Min Guanghui Wang Changchun Yu Huashun. Surface Oxidizing Behavior of Mg-Ca Alloy[J]. Special Casting & Nonferrous Alloys, 2004,(6):14-16. DOI：

摘要

研究了几种不同Ca含量的Mg Ca二元合金表面氧化程度及其氧化膜形貌。合金表面氧化膜的XRD

SEM

TEM及其电子探针分析表明

Ca元素的加入可有效地减少镁合金熔体表面的氧化

且随着Ca含量的增加

氧化程度减弱

表面品质变好。含Ca镁合金熔体氧化膜由外到内分为MgO层、CaO层和MgO·CaO层。还从热力学角度探讨了Ca元素的阻燃机理。

Abstract

Surface oxidized degree and oxidizing film morphology of Mg-Ca alloy with varying Ca contents were examined. Analysis of surface oxidizing film of the alloy by XRD

SEM

TEM and EPMA indicated that Ca addition can effectively reduce the oxidation of molten alloy surface. The surface quality can be improved due to the reduction of oxidation with Ca addition increase. The oxidizing film of the Ca containing molten Mg alloy is composed of MgO layer

CaO layer and MgO·CaO layer from outside to inside.The anti-ignition mechanism of Ca was approached based on the thermodynamics.