https://scholars.lib.ntu.edu.tw/handle/123456789/576882
標題: | Microstructure inhomogeneity of the constituent particles of 7075-T6 aluminum alloy after alkaline cleaning and desmutting | 作者: | Chen S.-Y Huang C.-Y CHAO-SUNG LIN |
關鍵字: | Aluminum alloys; Aluminum coatings; Aluminum corrosion; Aluminum oxide; Cleaning; Copper corrosion; Galvanic corrosion; Iron alloys; Microstructure; Nanotechnology; Sodium hydroxide; Ternary alloys; 7075-T6 aluminium alloys; A aluminum; Alkaline cleaning; Aluminium matrix; B AES; B TEM; C acidic corrosion; C alkaline corrosion; C de-alloying; Inhomogeneities; Dealloying | 公開日期: | 2021 | 卷: | 184 | 來源出版物: | Corrosion Science | 摘要: | The microstructural evolution of AA7075-T6 aluminum alloy during alkaline cleaning in NaOH solution and desmutting in HNO3 solution was studied. AA7075-T6 contained micro-sized Mg-Si and Al-Fe-Cu constituent particles. After desmutting, Mg-Si particles transformed to Si-O particles, leaving gaps with the aluminum matrix. The aluminum matrix nearby Al-Fe-Cu particles suffered slight trenching corrosion; meanwhile, the corrosion of Al-Fe-Cu particles varied from slight corrosion, dealloying, and nano-scale galvanic corrosion induced by re-deposited Cu particulates. After alkaline cleaning and desmutting, the microstructure of constituent particles was inhomogeneous although a uniform, 5 ? 15-nm-thick Al oxide/hydroxide film covered the aluminum matrix. ? 2021 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102084701&doi=10.1016%2fj.corsci.2021.109354&partnerID=40&md5=e2b0aed394e83c51af11e39df0fccd41 https://scholars.lib.ntu.edu.tw/handle/123456789/576882 |
ISSN: | 0010938X | DOI: | 10.1016/j.corsci.2021.109354 |
顯示於: | 材料科學與工程學系 |
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