Search
Filters
Close

Get BIG discounts on selected titles from NACE and SSPC.  Shop Now

Electrochemical Corrosion Behavior of Carbon Steel With and Without Residual Elements

Residual elements (RE) in carbon steel, not specifically included in the specified steel, appear to influence the corrosion rate under certain conditions, especially in services involving hydrofluoric acid (HF). The relative proportions of RE, specifically %C, %Ni, %Cu, and %Cr in carbon steel base and weld metals used in refineries, especially in alkylation processes with HF as the catalyst, significantly impact corrosion behavior. Studies described in the literature show corrosion damage with high RE (Cu + Ni + Cr >0.20) components as compared to low RE (Cu + Ni + Cr <0.20) components.  

In this study, electrochemical corrosion testing was performed on a 3-inch pipe elbow section with high REs that had developed a through-wall leak in service. Test results were compared to those obtained on a similar pipe elbow section with lower REs. The samples were exposed to 50% HF at room temperature and at 65°C. Linear polarization resistance (LPR) corrosion rates were measured at both temperatures. Potentiodynamic (PD) polarization scans were performed on samples of low and high RE steel exposed to 50% HF at room temperature.  

Test results indicated that LPR corrosion rates were higher for the high RE carbon steel samples than for low RE carbon steel samples at both temperatures. PD scans showed that the critical current densities were higher for high RE steel than for low RE steel.  

Product Number: 51320-14245-SG
Author: Suresh Divi, Sri Krishna Chimbli
Publication Date: 2020
$0.00
$20.00
$20.00
Product tags
Also Purchased
Picture for Mechanistic Modelling of Carbon Steel Corrosion in a MDEA-Based CO2 Capture Process
Available for download

51312-01321-Mechanistic Modelling of Carbon Steel Corrosion in a MDEA-Based CO2 Capture Process

Product Number: 51312-01321-SG
ISBN: 01321 2012 CP
Author: Yoon-Seok Choi
Publication Date: 2012
$20.00
Picture for 11003 Modelling the Rate of Deterioration of Reinforced Concrete Structures
Available for download

11003 Modelling the Rate of Deterioration of Reinforced Concrete Structures

Product Number: 51300-11003-SG
ISBN: 11003 2011 CP
Author: John Broomfield
Publication Date: 2011
$20.00