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钢的大气腐蚀与冲击韧性：对在复活节岛暴露3年的镀锌和未镀锌钢的案例研究。

Atmospheric corrosion and impact toughness of steels: Case study in steels with and without galvanizing, exposed for 3 years in Rapa Nui Island.

作者信息

Vera Rosa, Valverde Bárbara, Olave Elizabeth, Sánchez Rodrigo, Díaz-Gómez Andrés, Muñoz Lisa, Rojas Paula

机构信息

Institute of Chemistry, Faculty of Sciences, Pontificia Universidad Católica de Valparaiso, Av. Universidad 330, Placilla, Valparaíso, Chile.

Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Diagonal Las Torres 2640, Santiago, Chile.

出版信息

Heliyon. 2023 Jun 29;9(7):e17811. doi: 10.1016/j.heliyon.2023.e17811. eCollection 2023 Jul.

DOI:10.1016/j.heliyon.2023.e17811
PMID:37483784
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10362324/
Abstract

We studied atmospheric corrosion on Rapa Nui Island, using galvanized and non-galvanized SAE 1020 steel samples exposed on racks. We also added Charpy samples of both materials to directly determine the effect of corrosion rate on these materials' impact toughness. The results indicated a correlation between corrosion rate and toughness loss in the studied materials. In the corrosion study, we could also demonstrate the effect from increased insular population growth on contaminants which aid atmospheric corrosivity. Results showed that atmospheric SO has tripled compared with similar corrosion studies done 20 years ago (Mapa Iberoamericano de Corrosión, MICAT), increasing corrosion rates. Our results show how human factors can influence changes in environmental variables that strengthen corrosion.

摘要

我们在复活节岛研究了大气腐蚀情况，使用了暴露在架子上的镀锌和未镀锌的SAE 1020钢样本。我们还添加了这两种材料的夏比样本，以直接确定腐蚀速率对这些材料冲击韧性的影响。结果表明，在所研究的材料中，腐蚀速率与韧性损失之间存在相关性。在腐蚀研究中，我们还可以证明岛屿人口增长增加对有助于大气腐蚀性的污染物的影响。结果表明，与20年前进行的类似腐蚀研究（《伊比利亚美洲腐蚀地图》，MICAT）相比，大气中的二氧化硫增加了两倍，腐蚀速率也随之增加。我们的研究结果表明了人为因素如何影响强化腐蚀的环境变量的变化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/21a619f19023/gr19.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/cc2cea83448b/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/7854ca934524/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/9c9cecc4e345/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/2dd23071e76e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/89a89b4a4884/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/67959fd1913e/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/74a4907251c3/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/c335931c9899/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/c842fa47e2f9/gr11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/417084923160/gr12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/753b4b5c54a8/gr13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/b8d7e7236309/gr14.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/94e5117d4659/gr15.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/a8ae45eab80b/gr16.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/b0715bef571e/gr17.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/fee2269ac21b/gr18.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f2d/10362324/21a619f19023/gr19.jpg

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