Flow-induced corrosion behaviour of low alloy steel in the presence of mono-ethylene glycol

Conference of the South African Advanced Materials Initiative 2018

Aribo, Sunday^1,2 ; Sesheweni, Mantsha^1 ; Sanumi, Olufemi^1 ; Ogunbadejo, Adekunle^2 ; Ige, Oladeji^1 ; Olubambi, Peter Apata^1

Centre for Nanoengineering and Tribocorrosion, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, South Africa^1

Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria^2

关键词: Degradation mechanism;    Flow induced corrosion;    Low temperature environment;    Mono ethylene glycols;    Monoethylene glycol;    Submerged impinging jets;    Weight loss;    Welded steels;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/430/1/012040/pdf
DOI  :  10.1088/1757-899X/430/1/012040

来源: IOP

【 摘 要 】

The flow-induced corrosion behaviour of welded low ally steel in 1 wt. % NaCl environment containing monoethylene glycol at 0°C and 25°C respectively, was investigated. A modified submerged impinging jet rig was adopted to simulate the low temperature environment. Varying speeds between 1 and 3 m/s were used to study the degradation mechanism of the welded steel. Also, the ratio of MEG: 1 wt. % NaCl was kept at 1:4 for the MEG/NaCl solution. Static corrosion condition was also studied and compared with the flowing conditions. Results indicated that the alloy degraded with observable weight loss in pure 1wt. % NaCl at both temperatures whereas there was very negligible weight loss in all the samples in MEG/NaCl solution.