Volta Potential Analysis of Intermetallics in 7A52 Aluminum Alloy
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第2期
论文作者：张平
文章页码：227 - 230
摘 要：In order to study the effect of intermaetallics on the corrosion behaviour of 7A52 aluminum alloy,the alloy was characterized by means of SEM-EDS and scanning Kelvin probe force microscopy（SKPFM）.The experimental results indicate that there are two different intermetallics:Al-Mn-Fe and Mg2Si.Both intermetallics exhibite the negative volta potential relative to the matrix indicating an anodic behaviour.Hereby,they are easy to be dissolved and corroded under the erosive environment,and there become the corrosion initiation sites.The Al-Mn-Fe intermetallics show stronger anodic behaviour than those of Mg2Si intermetalics.It means that Al-Mn-Fe intermetalics are easier to be corroded.
张平
National Defense Key Laboratory for Remanufacturing Technology,Academy of Armored Force Engineering
摘 要：In order to study the effect of intermaetallics on the corrosion behaviour of 7A52 aluminum alloy,the alloy was characterized by means of SEM-EDS and scanning Kelvin probe force microscopy（SKPFM）.The experimental results indicate that there are two different intermetallics:Al-Mn-Fe and Mg2Si.Both intermetallics exhibite the negative volta potential relative to the matrix indicating an anodic behaviour.Hereby,they are easy to be dissolved and corroded under the erosive environment,and there become the corrosion initiation sites.The Al-Mn-Fe intermetallics show stronger anodic behaviour than those of Mg2Si intermetalics.It means that Al-Mn-Fe intermetalics are easier to be corroded.
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