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Atmospheric Corrosion Monitoring Sensor in Corrosion Rate Prediction of Carbon and Weathering Steels in Thailand
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Metadata
Document Title
Atmospheric Corrosion Monitoring Sensor in Corrosion Rate Prediction of Carbon and Weathering Steels in Thailand
Author
Pongsaksawad W, Palsson NS, Khamsuk P, Sorachot S, Chianpairot A, Viyanit E, Shinohara T
Name from Authors Collection
Affiliations
National Science & Technology Development Agency - Thailand; National Metal & Materials Technology Center (MTEC); National Institute for Materials Science; RISE Research Institutes of Sweden; Tokyo University of Marine Science & Technology
Type
Article
Source Title
MATERIALS TRANSACTIONS
Year
2020
Volume
61
Issue
12
Page
2348-2356
Open Access
Bronze
Publisher
JAPAN INST METALS & MATERIALS
DOI
10.2320/matertrans.MT-M2020230
Format
Abstract
Galvanic type atmospheric corrosion monitoring (ACM) sensors can distinguish wet and dry conditions of a surface by reporting spiked charge when there is an electrolyte film on the sensor. In this study, Fe-Ag type ACM sensor was exposed to monitor time of wetness (TOWACM) on carbon steel and weathering steel coupons at seven test stations in Thailand. Climate parameters were monitored by weather stations. Chloride and sulfur dioxide deposition rates were obtained by dry gauze and lead dioxide cylinder methods, respectively. The objective was to investigate the effects of TOWACM, climate, and aerosols on corrosion rate in Thailand tropical climate under high temperature, high relative humidity, and frequent monsoon-induced rainfalls. Multivariable linear regression model applied on the first-year corrosion rate yielded predictive equations for ( I ) inland areas-as a function of temperature (T) and relative humidity (RH) and (2) coastal areas-as a function of rainfall (RF) with TOWACM or chloride (CI ) deposition rate. The first corrosion map of Thailand was proposed based on the predictive equations for corrosion rates of carbon steel and weathering steel.
Funding Sponsor
National Metal and Materials Technology Center, Thailand [P1850634, P1201530]
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WOS