锌局部腐蚀的结晶学和形貌特征研究

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2023-09-05 DOI:10.1080/1478422X.2023.2247236

X. Zhong, Philip J Withers, Yi Guo, Xiaorong Zhou, Ivan S. Cole

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引用次数: 0

摘要

摘要通过等离子体聚焦离子束（pFIB）挖掘的背散射电子衍射（EBSD）对0.5mm锌丝的整个横截面进行大面积晶体学分析，并通过扫描电子显微镜（SEM）进行形貌分析，确定并关联了锌腐蚀的晶体学和形貌特征。支配表面的条纹畴是非基面优先溶解的结果，留下与表面相交的（0001）板。锌的残余碎片靠近原始表面，这是由于表面上的初始保护膜和晶体腐蚀的共同作用。发现了三个腐蚀层，即从外到内，一个高度多孔的外层，一个致密的中间层和一个侵蚀层。

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Insights into crystallographic and topographic characteristics of local corrosion attack on zinc

ABSTRACT Through large area crystallographic analysis across the whole cross-section of a 0.5 mm zinc wire by backscattered electron diffraction (EBSD) excavated by plasma focused ion beam (pFIB) and topographic analysis by scanning electron microscopy (SEM), the crystallographic and topographic characteristics of corrosion on zinc are identified and correlated. Striated domains dominating the surface are the result of preferential dissolution of non-basal planes leaving (0001) plates intersecting the surface. Remnant fragments of zinc lie close to the original surface which is due to the combined effects of the initial protective film on the surface and the crystallographic corrosion. Three corrosion layers were found, namely from the outside inwards, a highly porous outer layer, a densified intermediate layer and an attacked layer.

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来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.