Books and journals Case studies Expert Briefings Open Access
Advanced search

Search results

1 – 10 of over 4000
To view the access options for this content please click here
Article
Publication date: 2 March 2015

The influence of tensile stress on the electrochemical behavior of X80 steel in a simulated acid soil solution

Jie Zhang, Jing Liu, Qian Hu, Feng Huang, ZhaoYang Cheng and JunTao Guo

The aim of this paper was to clarify the influence of tensile stress on the electrochemical behavior of X80 steel in a simulated acid soil solution and attempt to…

HTML
PDF (341 KB)

Abstract

Purpose

The aim of this paper was to clarify the influence of tensile stress on the electrochemical behavior of X80 steel in a simulated acid soil solution and attempt to understand mechanistic aspects of the corrosion behaviors of X80 under these conditions.

Design/methodology/approach

The electrochemical behavior of X80 steel at various tensile stresses was investigated in a simulated acid soil solution using electrochemical impedance spectroscopy, potentiodynamic scan measurements and surface analysis techniques.

Findings

The results show that as tensile stress was increased, the open-circuit potential decreased, the reaction activity increase, the reaction resistance (Rct)value became smaller by degrees, the corrosion product film resistance (Rf) first decreased and then increased and polarization current densities changed conversely. The corrosion product film was compact and continuous under the low stress, whereas it was relatively loose under high-stress conditions. Tensile stress promotes the movement of dislocations, which become active points when they move to the steel surface. The increase in the number of active points enhances the anodic dissolution rate and promotes the formation of corrosion product film whose blocking effect can decrease the dissolution rate. The corrosion rate of the specimen is determined by these two effects.

Originality/value

This research provides an essential insight into the mechanism of the electrochemical behavior of X80 steel in acid soil environments.

Details

Anti-Corrosion Methods and Materials, vol. 62 no. 2
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-11-2013-1321
ISSN: 0003-5599

Keywords

  • Corrosion behavior
  • Corrosion products
  • Tensile stress
  • X80

To view the access options for this content please click here
Article
Publication date: 25 February 2014

Corrosion behavior of ZHMn55-3-1 copper alloy in stagnant and flowing seawater with entrained sediment

Yanan Luo, Qizheng Li and Shizhe Song

The purpose of this investigation was to study the erosion-corrosion behavior of ZHMn55-3-1 copper alloy in seawater (flow velocity from 0 to 0.8 m/s, sediment content…

HTML
PDF (393 KB)

Abstract

Purpose

The purpose of this investigation was to study the erosion-corrosion behavior of ZHMn55-3-1 copper alloy in seawater (flow velocity from 0 to 0.8 m/s, sediment content from 0 to 0.15 percent), to analyze the effects of the flow velocity and sediment content on the erosion-corrosion process.

Design/methodology/approach

A simulated erosion-corrosion test system was set up. Weight loss determinations and electrochemical measurements (such as potentiostat square wave (PSW), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests) were used to study the erosion-corrosion behavior of ZHMn55-3-1 copper alloy in stagnant and flowing seawater with different sediment contents.

Findings

Under the test conditions, ZHMn55-3-1 copper alloys had good corrosion resistance to stagnant clear seawater, while increasing the flow velocity and sediment content reduced the corrosion resistance of the material. The difference in the erosion-corrosion mechanism between flow velocity and sediment content was that the former affected both the cathode process and the anode process of electrochemical corrosion, while the latter essentially affected only the anode process.

Originality/value

This paper explains the effects of flow velocity and sediment content on the erosion-corrosion behavior of ZHMn55-3-1 copper alloy in flowing seawater.

Details

Anti-Corrosion Methods and Materials, vol. 61 no. 2
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-04-2013-1255
ISSN: 0003-5599

Keywords

  • Seawater
  • Copper alloy
  • Electrochemical impedance spectroscopy
  • Erosion-corrosion
  • Potentiodynamic polarization
  • Sediment content

To view the access options for this content please click here
Article
Publication date: 1 September 1984

High temperature corrosion behaviour of ceramic‐based coatings on mild steel

A.U. Malik and Sharif Ahmed

High temperature oxidation and hot corrosion behaviour of some ceramic‐based coatings, e.g. borate, silicate‐chromate and carbide‐oxide on mild steel has been investigated…

HTML
PDF (700 KB)

Abstract

High temperature oxidation and hot corrosion behaviour of some ceramic‐based coatings, e.g. borate, silicate‐chromate and carbide‐oxide on mild steel has been investigated in the temperature range of 400–850°C. The coated steel in general shows much better oxidation and hot corrosion resistance than the uncoated steel specially at higher temperatures. The borate coating has better hot corrosion resistance performance between 700 and 800°C whereas silicate‐chromate is suitable at temperatures above 800°C. The coated steels show parabolic behaviour during oxidation. In presence of Na2SO4, the corrosion rate increases with increasing salt concentration till a maxima is reached. The amount of Na2SO4 corresponding to the maximum corrosion rate decreases with increasing temperature. A self‐sustained fluxing cum sulphidation mechanism has been proposed to explain hot corrosion behaviour of uncoated or coated mild steel.

Details

Anti-Corrosion Methods and Materials, vol. 31 no. 9
Type: Research Article
DOI: https://doi.org/10.1108/eb007248
ISSN: 0003-5599

To view the access options for this content please click here
Article
Publication date: 4 November 2019

Investigations on the void coalescence and corrosion behaviour of titanium grade 4 sheets during single point incremental forming process

G. Yoganjaneyulu, Y. Phaneendra, V.V. Ravikumar and C. Sathiya Narayanan

The purpose of this paper is to investigate the void coalescence and corrosion behaviour of titanium Grade 4 sheets during single point incremental forming (SPIF) process…

HTML
PDF (1.8 MB)

Abstract

Purpose

The purpose of this paper is to investigate the void coalescence and corrosion behaviour of titanium Grade 4 sheets during single point incremental forming (SPIF) process with various spindle rotational speeds. The development of corrosion pits in 3.5 (%) NaCl solution has also been studied during SPIF process.

Design/methodology/approach

In this current research work, the void coalescence analysis and corrosion behaviour of titanium Grade 4 specimens were studied. A potentio-dynamic polarization (PDP) study was conducted to investigate the corrosion behaviour of titanium Grade 4 processed samples with various spindle speeds in 3.5 (%) NaCl solution. The scanning electron microscope and transmission electron microscope analysis was carried out to study the fracture behaviour and corrosion morphology of processed samples.

Findings

The titanium Grade 4 sheets obtained better formability and corrosion resistance by increasing the CNC spindle rotational speeds. In fact that, the significant plastic deformation affects the corrosion rate with various spindle speeds were recorded.

Originality/value

The spindle rotational speeds and vertical step depths increases then the titanium Grade 4 sheets showed better formability, void coalescence and corrosion behaviour as the same is evidenced in forming limit diagram and PDP curves.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 6
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-01-2019-2074
ISSN: 0003-5599

Keywords

  • SEM
  • Corrosion behaviour
  • FLD
  • TEM
  • Titanium Grade 4 sheets
  • Void coalescence analysis

To view the access options for this content please click here
Article
Publication date: 31 January 2020

The influence of half-cycle rectified sinusoidal alternating current (AC) on corrosion of X80 pipeline steel in an acid bicarbonate solution

Hailing Li, Hongxia Wan, Shengrong Wang, Cuiwei Du and Dawei Zhang

This paper aims to investigate the effect of alternating current (AC) on corrosion, it is not yet clear about the exact mechanism of the corrosion induced by AC. Previous…

HTML
PDF (2.4 MB)

Abstract

Purpose

This paper aims to investigate the effect of alternating current (AC) on corrosion, it is not yet clear about the exact mechanism of the corrosion induced by AC. Previous reports indicated that AC corrosion was similar to the effect of continuous cathodic and anodic polarization on the corrosion process of the metals. Wan et al. studied the effect of negative half-wave AC on stress corrosion cracking behavior and mechanism of X80 pipeline steel in near-neutral solution.

Design/methodology/approach

This study attempted to understand the AC-induced corrosion by imposing the half-cycle AC on the X80 pipeline steel in an acid bicarbonate solution. The AC corrosion mechanism was determined by weight loss and potentiodynamic polarization curve measurements, as well as surface characterization.

Findings

The results show that the positive half-cycle AC accelerated the uniform corrosion in the NaHCO3 solution, the negative half-cycle AC would decrease the uniform corrosion and local corrosion was increased and some Ca and Mg deposited on the surface of X80 steel, so the corrosion rate decreased by negative half-cycle AC. The corrosion product was composed of α-FeOOH under the application of positive half-cycle AC. The oxygen reduction led to a local increase of pH near the electrode surface and led to the formation of α-FeOOH, which enhanced the protectability of corrosion products.

Originality/value

Researchers studied the effect of negative half-wave AC on stress corrosion cracking behavior and mechanism of X80 pipeline steel in near-neutral solution. However, the AC behavior and corrosion mechanism in acid solution are unknown. So to make clear about the corrosion behavior of metals in different polarization states and the mechanism involved, diode technology was used to research the AC corrosion, half-wave AC was applied on the metals after the full-wave rectified.

Details

Anti-Corrosion Methods and Materials, vol. 67 no. 2
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-10-2018-2021
ISSN: 0003-5599

Keywords

  • Half-cycle alternating current (AC)
  • X80 steel
  • Pitting corrosion

To view the access options for this content please click here
Article
Publication date: 1 July 2019

Corrosion behavior of N80 steel in CO2-saturated formation water

Zhichao Qiu, Chunming Xiong, Zhengrong Ye, Xiang Zhou, Rui Wang, Xueqiang Lin and Pengfei Sui

This paper aims to explore the influence of CO2 partial pressure, flow rate and water cut on N80 steel corrosion behaviors in the displacement process of oil in glutenite…

HTML
PDF (3 MB)

Abstract

Purpose

This paper aims to explore the influence of CO2 partial pressure, flow rate and water cut on N80 steel corrosion behaviors in the displacement process of oil in glutenite reservoir by CO2 injection.

Design/methodology/approach

A self-made 3 L high-temperature and high-pressure autoclave was used to conduct corrosion simulation experiments of N80 steel in different CO2 partial pressures, flow rates and water cut (the independently developed oil and water mixing approach can ensure the uniform mixing of oil and water in experiments). Techniques like weight loss and surface analysis were used to analyze the corrosion behaviors of N80 steel under different conditions.

Findings

Results showed that the average corrosion rate of N80 steel accelerated at varying degrees with the increase of CO2 partial pressure, flow rate and water cut. Excluding that the samples showed uniform corrosion under the two conditions of 0.5MPa CO2 partial pressure and static corrosion, they displayed mesa attack corrosion under other conditions. Besides, with the increase of CO2 partial pressure, the pH value of solution dropped and the matrix corrosion speed rose, hence leading to the increased Fe2+ and CO32− concentration. Meanwhile, a lowered pH value improved the FeCO3 critical supersaturation, thereby leading to an increased nucleation rate/growth rate and ultimately causing the decrease of the dimension of FeCO3 crystallites formed on the surface of the samples.

Originality/value

The results can be helpful in targeted anti-corrosion measures for CO2/oil/water corrosive environment.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 4
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-10-2018-2005
ISSN: 0003-5599

Keywords

  • N80 steel
  • Weight loss
  • CO2 partial pressure
  • Flow rate
  • Water cut

To view the access options for this content please click here
Article
Publication date: 1 August 2005

A comparative study on the corrosion behaviour of simulated archaeological iron in Cl−, NO3− and HSO3− bearing pollutants

Xia Cao, Chunchun Xu, Weizhen Ouyang and Lijie Yue

The main purpose of this study was to investigate the corrosion behaviour of simulated archaeological iron in Cl−, NO3− and HSO3− bearing pollutants.

HTML
PDF (345 KB)

Abstract

Purpose

The main purpose of this study was to investigate the corrosion behaviour of simulated archaeological iron in Cl−, NO3− and HSO3− bearing pollutants.

Design/methodology/approach

Periodic wet‐dry test, potentiodynamic polarization experiments and surface tension tests were used to study the rule of corrosion rate. Scanning Electron microscopy with EDAX, stereoscopic microscopy and X‐ray diffraction were also used to identify the corrosion products and mechanism. Weight loss measurement, electrochemical theory, as well as ions adsorption theory and penetration theory were used to explain the different corrosion behaviour.

Findings

The experimental results demonstrated that the attack of anodic ions to the metal at the initial corrosion stage showed great agreement with their surface activity. However, as corrosion progressed, the different reaction mechanisms and the penetration effect of anions as well as the characteristics of the corrosion products (intermediate products and final products) begin to control the corrosion process.

Originality/value

The initial corrosion rate was found to show agreement with the surface activity of anions. From a new viewpoint, this paper explains the different corrosion behaviour of Cl−, NO3− and HSO3− anions to simulated archaeological iron and offers reference to the individual who pursues in corrosion and protection of metal.

Details

Anti-Corrosion Methods and Materials, vol. 52 no. 4
Type: Research Article
DOI: https://doi.org/10.1108/00035590510603229
ISSN: 0003-5599

Keywords

  • Corrosion
  • Iron

To view the access options for this content please click here
Article
Publication date: 17 April 2020

Synthesis and characterization of ZA-27/SiC nanocomposites and study of its anticorrosion performance in a 3.5% NaCl medium

Mohammed T. Hayajneh, Mohammed Ali Almomani and Shrouq M. Alelaumi

The purpose of this paper is to investigate the effects of incorporating SiC nanoparticles into ZA-27 alloy on the corrosion behavior of the produced nanocomposites.

HTML
PDF (4.9 MB)

Abstract

Purpose

The purpose of this paper is to investigate the effects of incorporating SiC nanoparticles into ZA-27 alloy on the corrosion behavior of the produced nanocomposites.

Design/methodology/approach

The nanocomposites were fabricated by a double-step stir casting technique. The corrosion behavior of the produced ZA-27 nanocomposites was investigated using potentiodynamic polarization test in a 3.5% NaCl medium. The surfaces of the fabricated metal matrix nanocomposites (MMNCs) before and after corrosion tests were imaged and analyzed using an optical microscope and scanning electron microscope (SEM) to examine the microstructure of the produced MMNCs and morphology of its surface before and after corrosion.

Findings

The corrosion test results reveal that the fabricated nanocomposites have an improved uniform corrosion resistance when compared with the corresponding monolithic matrix alloy. On the other hand, the base monolithic alloy is less susceptible to the pitting phenomenon than the nanocomposites. The electrochemical results are consistent with the pits morphology of the corroded MMNCs.

Originality/value

This study highlights the use of SiC nano-particulates for controlling of ZA alloy corrosion behavior and enhancing its anti-corrosion characteristics which will open a new route for industrial applications. The corrosion behavior of ZA-27 alloy-based composite reinforced with different weight fractions of nano-SiC particles have an improved uniform corrosion behavior as compared with the corresponding matrix alloy.

Details

Anti-Corrosion Methods and Materials, vol. 67 no. 3
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-05-2019-2122
ISSN: 0003-5599

Keywords

  • ZA-27 alloy
  • Nanocomposites
  • Corrosion behaviour
  • Anticorrosion performance
  • Uniform and localized corrosion

To view the access options for this content please click here
Article
Publication date: 6 January 2020

Corrosion behavior of heat-treated and cryorolled Al 5052 alloys in different chloride ion concentrations

Anasyida Abu Seman, Ji Kit Chan, Muhammad Anas Norazman, Zuhailawati Hussain, Dhindaw Brij and Azzura Ismail

This paper aims to investigate the corrosion behaviour of heat-treated and cryorolled Al 5052 alloys in different Cl− ion concentrations.

HTML
PDF (1.9 MB)

Abstract

Purpose

This paper aims to investigate the corrosion behaviour of heat-treated and cryorolled Al 5052 alloys in different Cl− ion concentrations.

Design/methodology/approach

NaCl solutions with concentrations of 0, 0.5, 3.5 and 5.5 per cent were selected. Samples were subjected to pre-heat treatment (annealing at 300 °C and solution treatment at 540 °C) and cryorolling up to 30 per cent reduction before undergoing corrosion tests. The corrosion behaviour of the samples was then investigated by potentiodynamic polarization. The microstructure of the corroded samples was evaluated under an optical microscope, and the percentages of pits on their surfaces were calculated.

Findings

The cryorolled samples had a lower corrosion rate than the samples that were not cryorolled. The cryorolled sample that underwent solution treatment showed the highest corrosion resistance among all the samples tested.

Practical implications

The commercial impact of the study is the possibility of using the cryorolled Al alloy in various ion chloride environment.

Originality/value

The obtained results help in understanding the corrosion behaviour of cryorolled samples under different heat treatment conditions.

Details

Anti-Corrosion Methods and Materials, vol. 67 no. 1
Type: Research Article
DOI: https://doi.org/10.1108/ACMM-03-2019-2092
ISSN: 0003-5599

Keywords

  • Corrosion
  • Heat treatment
  • Al 5052 alloy
  • Cryorolling

To view the access options for this content please click here
Article
Publication date: 27 June 2008

Effect of humic acid on the corrosion behavior of carbon steel in natural freshwaters

Li Jiang, Xuhui Mao, Jianfei Yu and Fuxing Gan

The purpose of this paper is to study corrosion behavior and corrosion mechanism of carbon steel in natural freshwaters with humic acid (HA).

HTML
PDF (103 KB)

Abstract

Purpose

The purpose of this paper is to study corrosion behavior and corrosion mechanism of carbon steel in natural freshwaters with humic acid (HA).

Design/methodology/approach

The weight‐loss method, electrochemical measurements and surface analysis technique were used to study the corrosion behavior of carbon steel in freshwaters with HA.

Findings

General corrosion occurred when carbon steel was exposed to test solutions (fresh lake water with and without HA). The presence of HA in test solution can accelerated the corrosion rate of carbon steel.

Originality/value

There have been few reports on the effect of HA on the corrosion behavior of carbon steel. In this study, it is clearly shown that the presence of HA in fresh lake water can accelerate the corrosion rate of carbon steel. This research not only can offer theoretical guidelines for the prevention of pipelines and facilities from corroding, but also can provide a reference for suitable material selection and the further protection of carbon steel in hydraulic engineering.

Details

Anti-Corrosion Methods and Materials, vol. 55 no. 4
Type: Research Article
DOI: https://doi.org/10.1108/00035590810887709
ISSN: 0003-5599

Keywords

  • Steel
  • Acids
  • Corrosion environments
  • Water

Access
Only content I have access to
Only Open Access
Year
  • Last week (2)
  • Last month (12)
  • Last 3 months (41)
  • Last 6 months (98)
  • Last 12 months (232)
  • All dates (4091)
Content type
  • Article (3900)
  • Book part (105)
  • Earlycite article (79)
  • Case study (6)
  • Expert briefing (1)
1 – 10 of over 4000
Emerald Publishing
  • Opens in new window
  • Opens in new window
  • Opens in new window
  • Opens in new window
© 2021 Emerald Publishing Limited

Services

  • Authors Opens in new window
  • Editors Opens in new window
  • Librarians Opens in new window
  • Researchers Opens in new window
  • Reviewers Opens in new window

About

  • About Emerald Opens in new window
  • Working for Emerald Opens in new window
  • Contact us Opens in new window
  • Publication sitemap

Policies and information

  • Privacy notice
  • Site policies
  • Modern Slavery Act Opens in new window
  • Chair of Trustees governance statement Opens in new window
  • COVID-19 policy Opens in new window
Manage cookies

We’re listening — tell us what you think

  • Something didn’t work…

    Report bugs here

  • All feedback is valuable

    Please share your general feedback

  • Member of Emerald Engage?

    You can join in the discussion by joining the community or logging in here.
    You can also find out more about Emerald Engage.

Join us on our journey

  • Platform update page

    Visit emeraldpublishing.com/platformupdate to discover the latest news and updates

  • Questions & More Information

    Answers to the most commonly asked questions here