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Article
Publication date: 1 June 2004

W.M.M. Huijbregts and R.G.I. Leferink

Corrosion failures due to condensing flue gases containing H2O, SO3, NOx and HCl still occur more often than might be expected. The corrosion failures can be of several…

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Abstract

Corrosion failures due to condensing flue gases containing H2O, SO3, NOx and HCl still occur more often than might be expected. The corrosion failures can be of several types: general corrosion, pitting attack and stress corrosion cracking (SCC). The chemistry of condensing gases is discussed, and some examples of corrosion in large‐scale installations are presented, including blast stoves for steel production, heat recovery steam generators, and waste incineration boilers. The use of thermal insulation inside boiler casings can result in nitrate SCC when the flue gas contains high concentrations of NOx. Nitric acid from flue gas can react with carbon steel and insulation material forming ammonium nitrate and calcium nitrate. Both materials have hygroscopic properties and are very corrosive, even above the water dewpoint of the gases.

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Anti-Corrosion Methods and Materials, vol. 51 no. 3
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 August 1963

An important section of the corrosion industry is that concerned with the installation of flooring and walls in buildings and structures liable to chemical attack and, as…

Abstract

An important section of the corrosion industry is that concerned with the installation of flooring and walls in buildings and structures liable to chemical attack and, as will be seen later, this covers a very wide field indeed. To the conventional materials such as silica cements, plasticised sulphur and bituminous compounds have now been added the more recently developed resinous cements and coatings, the newest of these being the epoxy and polyester resin base types. As a guide to the developments in this field we review below the products, both standard and new, of a number of firms specialising in this type of work.

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Anti-Corrosion Methods and Materials, vol. 10 no. 8
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 July 1969

Sandy Lew

Generally, of all the properties, corrosion resistance can be a prime consideration in determining whether a given alloy or metal is adequate for a proposed use. With the…

Abstract

Generally, of all the properties, corrosion resistance can be a prime consideration in determining whether a given alloy or metal is adequate for a proposed use. With the increasing ability to fabricate many alloys and metals into fibre material of extremely small diameter, a better knowledge of their chemical properties as related to their unique size becomes more essential since many of the potential applications involve exposure to corrosive environments. This article reviews the corrosion resistance of Brunsmet MF‐A1 stainless steel fibres produced by the Brunswick Corp., Chicago, Illinois.

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Anti-Corrosion Methods and Materials, vol. 16 no. 7
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 March 1963

J.F. Holmes

Most of this concluding article is concerned with surveying the corrosion of lead and its alloys in acids and alkalis of all types. As a considerable proportion of the…

Abstract

Most of this concluding article is concerned with surveying the corrosion of lead and its alloys in acids and alkalis of all types. As a considerable proportion of the lead consumed each year by industry is used for making grids for lead‐acid batteries, special attention has also been given to corrosion problems in this field. The newer applications for lead include its use in nuclear energy plant as a shielding material, and as a reactor coolant, and the corrosion problems arising under such conditions are discussed.

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Anti-Corrosion Methods and Materials, vol. 10 no. 3
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 6 November 2017

Emiliana Rose Jusoh Taib, Luqman Chuah Abdullah, Min Min Aung, Mahiran Basri, Mek Zah Salleh, Sariah Saalah, Suhaini Mamat, Ching Yern Chee and Jia Li Wong

This paper aims to demonstrate the synthesis of polyesterification reaction of non-edible jatropha seed oil (JO) and acrylic acid, which leads to the production of…

Abstract

Purpose

This paper aims to demonstrate the synthesis of polyesterification reaction of non-edible jatropha seed oil (JO) and acrylic acid, which leads to the production of acrylated epoxidised-based resin. To understand the physico-chemical characteristics when synthesis the JO-based epoxy acrylate, the effect of temperature on the reaction, concentration of acrylic acid and role of catalyst on reaction time and acid value were studied.

Design/methodology/approach

First, the double bond in JO was functionalised by epoxidation using the solvent-free performic method. The subsequent process was acrylation with acrylic acid using the base catalyst triethylamine and 4-methoxyphenol as an inhibitor respectively. The physico-chemical characteristics during the synthesis of the epoxy acrylate such as acid value was monitored and analysed. The formation of the epoxy and acrylate group was confirmed by a Fourier transform infrared spectroscopy spectra analysis and nuclear magnetic resonance analysis.

Findings

The optimum reaction condition was achieved at a ratio of epoxidised JO to acrylic acid of 1:1.5 and the reaction temperature of 110°C. This was indicated by the acid value reduction from 86 to 15 mg KOH/g sample at 6 hours.

Practical implications

The JO-based epoxy acrylate synthesised has a potential to be used in formulations the prepolymer resin for UV curable coating applications. The JO which is from natural resources and is sustainable raw materials that possible reduce the dependency on petroleum-based coating.

Originality/value

The epoxidised jatropha seed oil epoxy acrylate was synthesised, as a new type of oligomer resin that contains a reactive acrylate group, which can be alternative to petroleum-based coating and can used further in the formulation of the radiation curable coating.

Details

Pigment & Resin Technology, vol. 46 no. 6
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 1 January 1981

C.A. Smith

A review of the action of microbes in the corrosion process, with particular reference to the attack on concrete and underground pipe systems

Abstract

A review of the action of microbes in the corrosion process, with particular reference to the attack on concrete and underground pipe systems

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Anti-Corrosion Methods and Materials, vol. 28 no. 1
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 August 2015

Prof. Asim Kumar Roy Choudhury and Mr. Suman Mitra

Commercial natural dyes are quite costly as manufacturers are to follow multi-step extraction and purification procedures for standardisation purposes. Upon cost…

Abstract

Commercial natural dyes are quite costly as manufacturers are to follow multi-step extraction and purification procedures for standardisation purposes. Upon cost comparison, they lose in the market to synthetic dyes. However, in the handicraft sector, reproducibility may be of lesser importance against cost. In the present study, a domestic method of dyeing silk with the aqueous extract of raw plant/tree components (flower, leave, bark and root) by using a natural mordant and alum will be described. Good dyebath exhaustion and washing and light fastness are observed for some of the natural colouring matters.

Details

Research Journal of Textile and Apparel, vol. 19 no. 3
Type: Research Article
ISSN: 1560-6074

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Article
Publication date: 1 October 1961

John M. Perfect, W.J. Campbell, J.W. Cuthbertson, J.C. Bailey, A.W. Brace, J.M. Kape, C.E. Michelson, H. Ginsberg, W. Kaden, J.G. Simmons, B.A. Scott, H.M. Bigford, H. Richaud, Capt. J. Fox‐Williams and H.L. Watts

The Conference on Anodised Aluminium, organised by the Aluminium Development Association and held in the new Cripps Hall at Nottingham University from September 12–14, was…

Abstract

The Conference on Anodised Aluminium, organised by the Aluminium Development Association and held in the new Cripps Hall at Nottingham University from September 12–14, was probably the first of its kind in the world and attracted nearly 300 delegates. Eighteen papers were discussed. In the following pages abstracts and conclusions from most of the papers are given, emphasis being placed on the corrosion aspects of the subject.

Details

Anti-Corrosion Methods and Materials, vol. 8 no. 10
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 27 May 2014

Ruben Suarez-Hernandez, Jose G. Gonzalez-Rodriguez, Gloria F. Dominguez-Patiño and Alberto Martinez-Villafañe

The purpose of this investigation is to study the corrosion inhibition of carbon steel (CS) using a “green” inhibitor, Opuntia ficus-indica, in an aerated, 0.5 M H2SO4

Abstract

Purpose

The purpose of this investigation is to study the corrosion inhibition of carbon steel (CS) using a “green” inhibitor, Opuntia ficus-indica, in an aerated, 0.5 M H2SO4 solution at different concentrations and temperatures.

Design/methodology/approach

Weight loss determinations, surface studies, electrochemical impedance spectroscopy and potentiodynamic polarization were applied during the investigation.

Findings

It was observed that Opuntia ficus-indica extract can decrease the corrosion rate of CS, and its efficiency increases with increasing concentration up to 1,000 ppm and with time, but decreases with increasing the temperature from 25 to 600C. The inhibitory activity is due to the presence of phenolic compounds in its chemical structure.

Research limitations/implications

The work was done under static conditions, whereas in acid cleaning conditions, there is a dynamic system. However, the findings may apply to both the systems.

Practical implications

CS is used in acidic environments in the acid cleaning industry.

Social implications

Results of this work show that it is possible to reduce the cost of repair of equipment and the environmental impact of corrosion.

Originality/value

There are very few investigations on the study of Opuntia ficus-indica leaf extract as a green inhibitor in an acidic environment.

Details

Anti-Corrosion Methods and Materials, vol. 61 no. 4
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 17 August 2018

Alexander I. Ikeuba and Peter C. Okafor

This paper aims to appraise the inhibitory effect of saponins extracted from Gongronema latifolium (SEGL) on mild steel in acid media. This is in a bid to conserve our…

Abstract

Purpose

This paper aims to appraise the inhibitory effect of saponins extracted from Gongronema latifolium (SEGL) on mild steel in acid media. This is in a bid to conserve our environment and maintain the integrity of engineering structures and materials.

Design/methodology/approach

The corrosion inhibition of SEGL and ethanolic extracts of the leaves of G. latifolium (EEGL) on mild steel was studied by hydrogen evolution technique within a temperature range of 30-60°C in tetraoxosulphate (VI) acid solutions.

Findings

The extracts inhibit the corrosion of mild steel, and the inhibition efficiency depends on the concentration of the plant extract, temperature and the period of immersion. SEGL was comparatively more efficient than EEGL. Optimum values of the inhibition efficiency for both the EEGL and SEGL (93.7 and 96.5 per cent, respectively) were obtained at extract concentration of 10 g/L, whereas the least values were obtained at extract concentration of 0.5 g/L.

Originality/value

This paper provides new information on the possible application of isolated SEGL as an environmentally friendly corrosion inhibitor. The possible mechanism of the inhibitive action is also given.

Details

Pigment & Resin Technology, vol. 48 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

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