Review on modelling of corrosion under droplet electrolyte for predicting atmospheric corrosion rate

2021 ◽  
Vol 62 ◽  
pp. 254-267
Author(s):  
Bangalore Gangadharacharya Koushik ◽  
Nils Van den Steen ◽  
Mesfin Haile Mamme ◽  
Yves Van Ingelgem ◽  
Herman Terryn
Keyword(s):  
Corrosion Rate ◽  
Atmospheric Corrosion

Research on Prediction of Carbon Steel in SO2 Atmospheric Corrosion Using Grey Model

2014 ◽  
Vol 507 ◽  
pp. 258-262
Author(s):  
Ping Wang ◽  
Zhao Hui Yin ◽  
Han Tao Ren ◽  
Song Xu
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Prediction Model ◽  
Relative Error ◽  
Atmospheric Corrosion ◽  
Grey Model ◽  
Fitting Accuracy

The rate of carbon steel in SO2 Atmospheric Corrosion was modeled by grey model GM (1, 1). The accuracy and rationality of prediction model have been evaluated. The result indicated that the model had a better fitting accuracy. By comparing the calculated values with a predicted atmospheric corrosion rate of carbon steel after 264h, it showed that its relative error has been just 0.5619% which had higher forecast reliability.

scholarly journals ASESMEN KOROSI & ANALISIS RISIKO KUALITATIF PADA VERTIKAL BEJANA TEKAN

2021 ◽  
Vol 8 (2) ◽  
pp. 63-72
Author(s):  
Amam Fachrur Rozie ◽  
D.N Adnyana
Keyword(s):  
Risk Analysis ◽  
Corrosion Rate ◽  
Pressure Vessel ◽  
Atmospheric Corrosion ◽  
Uniform Corrosion ◽  
Vertical Pressure ◽  
Qualitative Risk Analysis ◽  
Non Destructive ◽  
Design Pressure

Keselamatan dan keamanan dalam penggunaan bejana tekan sangat penting dan hal utama dalam penggunaan bejana tekan, terlebih lagi jika bejana tekan tersebut sudah melewati umur desain nya. Penelitian ini bertujuan untuk menilai kelayakan kondisi terkini dari suatu bejana tekan vertikal (vertical pressure vessel) yang telah beroperasi sejak tahun 1970 tetapi berhenti beroperasi pada tahun 2011. Pendekatan penilaian pada bejana tekan vertikal ini berbasis pada metode penilaian korosi dan risiko secara kualitatif. Selain itu juga dipergunakan metode-metode lain dalam aspek penilaian nya seperti visual inspeksi, laju korosi (corrosion rate), Non-Destructive Examination (NDE), software calculation dan analisa risiko kualitatif (qualitative risk analysis). Dari hasil observasi dan inspeksi di dapat tekanan desain (design pressure) adalah 7 kg/cm2, Temperatur desain (design temperature) adalah 61°C dengan material konstruksi adalah SA-283 Gr. C dan standard & code yang dipergunakan adalah ASME Sect. VIII Div. 1 dan API 510 serta beberapa standard & code lainnya. Dari hasil kajian dan kalkulasi di lapangan, maka didapat faktor penyebab kerusakan yang kemungkinan terjadi adalah atmospheric corrosion & uniform corrosion dengan nilai laju korosi adalah sebesar 0,127mm/yr dan tingkat risiko dari bejana tekan vertikal ini masuk dalam kategori 2D yang artinya adalah medium-high dengan maksimal umur pakai sampai usia 27 tahun untuk top head dan 24 tahun dan bottom head serta 23 tahun untuk shell. Sehingga dapat disimpulkan bahwa bejana tekan ini masih aman dan layak dipergunakan dengan batasan-batasan di atas.

scholarly journals The role of chromium content in the long-term atmospheric corrosion process

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Baozhuang Sun ◽  
Xiaomei Zuo ◽  
Xuequn Cheng ◽  
Xiaogang Li
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Atmospheric Corrosion ◽  
X Ray Diffraction ◽  
Kelvin Probe ◽  
Electrochemical Tests ◽  
Force Microscopy ◽  
Cr Content ◽  
Alloy Steels ◽  
Bare Steel

AbstractThe corrosion of alloy steels with different amounts of Cr was studied using electrochemical tests, wet–dry cycle corrosion, X-ray diffraction, and Kelvin probe force microscopy. The results show that the content of Cr is positively correlated with the corrosion resistance of bare steel, but the corrosion resistance of atmospheric corrosion does not show the same pattern. The atmospheric corrosion resistance of Cr-containing steel exhibits three different stages with the change of Cr element content. When the Cr content is in the range of 1–4%, the corrosion rate is high and does not change within the Cr content. As the Cr content was further increased from 4 to 7%, the corrosion rate exhibited a linear decrease and then drops rapidly when the Cr content reaches 8%. These three different corrosion rate stages are related to the influence of Cr content on Fe3O4 content in the rust layer.

Methodology to Improve Corrosion Rate Estimation Based on Atmospheric Corrosion Monitoring Sensors

CORROSION ◽  
10.5006/2234 ◽  
2017 ◽  
Vol 73 (2) ◽  
pp. 199-209 ◽  
Author(s):  
Norikazu Fuse ◽  
Atsushi Naganuma ◽  
Tetsuo Fukuchi ◽  
Jun-ichi Tani ◽  
Yasuhiko Hori
Keyword(s):  
Corrosion Rate ◽  
Atmospheric Corrosion ◽  
Corrosion Monitoring ◽  
Rate Estimation

Annual atmospheric corrosion rate and dose-response function for carbon steel in Bogotá

Atmósfera ◽  
2017 ◽  
Vol 30 (1) ◽  
pp. 53-61 ◽  
Author(s):  
John Fredy Ríos Rojas ◽  
◽  
David Aperador Rodríguez ◽  
Edwin Arbey Hernández García ◽  
Carlos Enrique Arroyave Posada ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Response Function ◽  
Dose Response ◽  
Atmospheric Corrosion ◽  
Dose Response Function

scholarly journals Evolutionary Computation Techniques for Predicting Atmospheric Corrosion

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Amine Marref ◽  
Saleh Basalamah ◽  
Rami Al-Ghamdi
Keyword(s):  
Genetic Algorithm ◽  
Genetic Algorithms ◽  
Corrosion Rate ◽  
Genetic Programming ◽  
Atmospheric Corrosion ◽  
Structural Integrity ◽  
Good Accuracy ◽  
Residual Life ◽  
Vital Role ◽  
Engineering Structures

Corrosion occurs in many engineering structures such as bridges, pipelines, and refineries and leads to the destruction of materials in a gradual manner and thus shortening their lifespan. It is therefore crucial to assess the structural integrity of engineering structures which are approaching or exceeding their designed lifespan in order to ensure their correct functioning, for example, carrying ability and safety. An understanding of corrosion and an ability to predict corrosion rate of a material in a particular environment plays a vital role in evaluating the residual life of the material. In this paper we investigate the use of genetic programming and genetic algorithms in the derivation of corrosion-rate expressions for steel and zinc. Genetic programming is used to automatically evolve corrosion-rate expressions while a genetic algorithm is used to evolve the parameters of an already engineered corrosion-rate expression. We show that both evolutionary techniques yield corrosion-rate expressions that have good accuracy.

scholarly journals Some Clarifications Regarding Literature on Atmospheric Corrosion of Weathering Steels

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
I. Díaz ◽  
H. Cano ◽  
B. Chico ◽  
D. de la Fuente ◽  
M. Morcillo
Keyword(s):  
Corrosion Rate ◽  
Environmental Conditions ◽  
Atmospheric Corrosion ◽  
Research Work ◽  
Rust Layer ◽  
Morphology And Structure ◽  
Time Of Wetness ◽  
Best Fit

Extensive research work has thrown light on the requisites for a protective rust layer to form on weathering steels (WSs) in the atmosphere, one of the most important is the existence of wet/dry cycling. However, the abundant literature on WS behaviour in different atmospheres can sometimes be confusing and lacks clear criteria regarding certain aspects that are addressed in the present paper. What corrosion models best fit the obtained data? How long does it take for the rust layer to stabilize? What is the morphology and structure of the protective rust layer? What is an acceptable corrosion rate for unpainted WS? What are the guideline environmental conditions, time of wetness (TOW), SO2, and Cl−, for unpainted WS? The paper makes a review of the bibliography on this issue.

scholarly journals Technique for Estimating Atmospheric Corrosion Rate of Zinc in Coastal Areas

1989 ◽  
Vol 38 (10) ◽  
pp. 540-545 ◽  
Author(s):  
Yoshimori Miyata ◽  
Ryoji Takekoshi ◽  
Hisayoshi Takazawa
Keyword(s):  
Corrosion Rate ◽  
Atmospheric Corrosion ◽  
Coastal Areas

scholarly journals DETERMINATION OF ATMOSPHERIC CORROSION RATE OF METALS IN 12 VIETNAMESE AREAS

2018 ◽  
Vol 55 (5B) ◽  
pp. 272
Author(s):  
Pham Duy Nam
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Rural Areas ◽  
Atmospheric Corrosion ◽  
Climatic Factors ◽  
Air Pollutant ◽  
Climatic Data ◽  
Corrosion Rates ◽  
Copper Aluminum

The corrosion of materials is a result of complex impact from many climatic factors such as temperature, humidity, air pollutant content in the air, rainfall etc. In addition, the corrosion rate of metals can be measured. Each climatic zone is characterized by its corrosion rate. This article presents the testing results to determine the corrosion rate of carbon steel, copper, aluminum and zinc in 12 districts characterizing different climate zones of Vietnam. Testing, evaluation, and classification of atmospheric corrosion were conducted in accordance with the standard ISO 9223. The results show that for all types of studied metals, their corrosion rates which are determined from climatic data are higher than the corrosion rates in reality, especially for carbon steel and aluminum. This difference is more visible in the rural areas.

scholarly journals Atmospheric Corrosion Monitoring Sensor in Corrosion Rate Prediction of Carbon and Weathering Steels in Thailand

2020 ◽  
Vol 61 (12) ◽  
pp. 2348-2356
Author(s):  
Wanida Pongsaksawad ◽  
Namurata S. Palsson ◽  
Piya Khamsuk ◽  
Sikharin Sorachot ◽  
Amnuaysak Chianpairot ◽  
...  
Keyword(s):  
Corrosion Rate ◽  
Atmospheric Corrosion ◽  
Corrosion Monitoring ◽  
Rate Prediction
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