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

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

doi:10.1016/j.heliyon.2023.e17811

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

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

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

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 SO₂ 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.

Original language	English
Article number	e17811
Journal	Heliyon
Volume	9
Issue number	7
DOIs	https://doi.org/10.1016/j.heliyon.2023.e17811
State	Published - Jul 2023
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Keywords

Galvanized steel
Impact toughness
Marine environment
Mild steel
atmospheric corrosion

Access to Document

10.1016/j.heliyon.2023.e17811

Cite this

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

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 SO2 has tripled compared with similar corrosion studies done 20 years ago (Mapa Iberoamericano de Corrosi{\'o}n, MICAT), increasing corrosion rates. Our results show how human factors can influence changes in environmental variables that strengthen corrosion.",

keywords = "Galvanized steel, Impact toughness, Marine environment, Mild steel, atmospheric corrosion",

author = "Rosa Vera and B{\'a}rbara Valverde and Elizabeth Olave and Rodrigo S{\'a}nchez and Andr{\'e}s D{\'i}az-G{\'o}mez and Lisa Mu{\~n}oz and Paula Rojas",

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doi = "10.1016/j.heliyon.2023.e17811",

language = "English",

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journal = "Heliyon",

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TY - JOUR

T1 - Atmospheric corrosion and impact toughness of steels

T2 - Case study in steels with and without galvanizing, exposed for 3 years in Rapa Nui Island

AU - Vera, Rosa

AU - Valverde, Bárbara

AU - Olave, Elizabeth

AU - Sánchez, Rodrigo

AU - Díaz-Gómez, Andrés

AU - Muñoz, Lisa

AU - Rojas, Paula

PY - 2023/7

Y1 - 2023/7

N2 - 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 SO2 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.

AB - 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 SO2 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.

KW - Galvanized steel

KW - Impact toughness

KW - Marine environment

KW - Mild steel

KW - atmospheric corrosion

UR - https://www.scopus.com/pages/publications/85165279056

U2 - 10.1016/j.heliyon.2023.e17811

DO - 10.1016/j.heliyon.2023.e17811

M3 - Article

AN - SCOPUS:85165279056

SN - 2405-8440

VL - 9

JO - Heliyon

JF - Heliyon

IS - 7

M1 - e17811

ER -

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

Abstract

UN SDGs

Keywords

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