作为SAE 1020碳钢自然腐蚀过程中形成的新针铁矿形态。

as new goethite morphology from the natural corrosion process of SAE 1020 carbon steel.

作者信息

Costa Thiago G, Cunha Ostroski Vanessa Wandersee, de Souza Fernando S

机构信息

Laboratory of Materials, Atelier for the Conservation-Restoration of Movable Cultural Heritage, Fundação Catarinense de Cultura (Santa Catarina Culture Foundation), 88025-200, Florianópolis, SC, Brazil.

UNISOCIESC, SociedadeEducacional de Santa Catarina, Chemical Eengineering Departament, 89206001, Joinville, SAC, Brazil.

出版信息

Heliyon. 2019 Nov 27;5(11):e02771. doi: 10.1016/j.heliyon.2019.e02771. eCollection 2019 Nov.

DOI:10.1016/j.heliyon.2019.e02771

PMID:31844707

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6895721/

Abstract

A new morphology of goethite aggregates (α-FeOOH) obtained through the natural corrosion process of 1020 carbon steel parts exposed to weathering was found. Micrographies obtained by SEM reveal micro and nanostructures with forms of nanosquares, microparticles, nanowires inside microparticles and the unpublished structure of "", all varying between 115 nm and 8 μm. The molecular structure of goethite was characterized by FTIR and elemental analysis of EDX converged with the obtained data. The average corrosion rate for 1020 carbon steel in the weathering was 1.7592 mpy. The data obtained in this work will contribute to the understanding of the corrosion process of 1020 carbon steel, one of the most used in civil construction, as well as in material sciences, where iron oxides are widely used in metallurgy, catalysis and adsorption, and the domain of morphology is fundamental for each application.

摘要

发现了通过1020碳钢部件暴露于风化的自然腐蚀过程获得的针铁矿聚集体（α-FeOOH）的一种新形态。通过扫描电子显微镜（SEM）获得的显微照片揭示了具有纳米方形、微粒、微粒内纳米线以及未公开的“”结构形式的微观和纳米结构，所有这些结构的尺寸在115纳米至8微米之间变化。针铁矿的分子结构通过傅里叶变换红外光谱（FTIR）进行了表征，能量色散X射线光谱（EDX）的元素分析结果与所得数据相符。1020碳钢在风化环境中的平均腐蚀速率为1.7592密耳/年。这项工作中获得的数据将有助于理解1020碳钢的腐蚀过程，1020碳钢是民用建筑中最常用的钢材之一，在材料科学领域也是如此，在材料科学中，氧化铁广泛应用于冶金、催化和吸附领域，形态学领域对于每种应用都至关重要。