Characterization of initial atmospheric corrosion of conventional weathering steels and a mild steel in a tropical atmosphere

被引：1
|
作者：
Jaen, Juan A. [1 ]
Munoz, Alcides [2 ]
Justavino, Jaime [3 ]
Hernandez, Cecilio [3 ]
机构：
[1] Univ Panama, Dept Quim Fis, CITEN, Lab 105,Edificio Labs Cient VIP, Panama City, Panama
[2] Univ Panama, Dept Fis, Panama City, Panama
[3] Univ Tecnol Panama, Lab Quim & Fis Aplicada, Panama City, Panama
来源：
ISIAME 2008 | 2009年
关键词：
Atmospheric corrosion; Weathering steel; Carbon steel; Tropical atmosphere; Corrosion product; MOSSBAUER-SPECTROSCOPY; CARBON-STEELS; DIFFERENT ENVIRONMENTS; PRODUCTS; MARINE; PANAMA; LAYER;
D O I：
10.1007/978-3-642-01369-0_73
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The phases and compositions of the corrosion products of a mild steel (A-36) and two weathering steels (A-588 and COR 420) formed after 3 months exposure to the tropical marine atmosphere of Panama were examined using FTIR and Mossbauer spectroscopy. The results show that amorphous or crystallized iron oxyhydroxides goethite alpha-FeOOH and lepidocrocite gamma-FeOOH are early corrosion products. Maghemite gamma-Fe2O3 and magnetite Fe3O4 have also been identified and found to be prominent components for steels exposed to the most aggressive conditions. The formation of akaganeite beta-FeOOH was observed when chlorides were occluded within the rust. FTIR showed the presence of hematite alpha-Fe2O3 in one sample.
引用
收藏
页码：553 / +
页数：3
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