Search results

1 – 10 of over 11000
Article
Publication date: 1 September 1959

G. Fitzgerald‐Lee

The addition of aluminium to copper results in an improvement in the corrosion‐resisting properties of the metal; this article discusses why aluminium bronzes are noted for their…

Abstract

The addition of aluminium to copper results in an improvement in the corrosion‐resisting properties of the metal; this article discusses why aluminium bronzes are noted for their performance in a number of industrial applications in which a wide range of corrosive materials—gaseous, liquid and solid—are encountered.

Details

Anti-Corrosion Methods and Materials, vol. 6 no. 9
Type: Research Article
ISSN: 0003-5599

Article
Publication date: 11 September 2009

A. Elango, V.M. Periasamy and M. Paramasivam

The purpose of this paper is to study to minimize the self‐corrosion rate of Type 57S aluminium containing (97.7 per cent Al, 2 per cent Mn and 0.03 per cent Mg) in 2 M NaOH…

Abstract

Purpose

The purpose of this paper is to study to minimize the self‐corrosion rate of Type 57S aluminium containing (97.7 per cent Al, 2 per cent Mn and 0.03 per cent Mg) in 2 M NaOH solution containing 0.2 M zinc oxide and 700 ppm of polyaniline.

Design/methodology/approach

The approach is used to measure weight loss and polarization measurements.

Findings

Results obtained show that as the amount of polyaniline is increased, the self‐corrosion rate of Alloy 57S aluminium decreases appreciably. Additionally, the open circuit potential is more in the case of 700 ppm level of polyaniline (−1.630 V) compare to 600 ppm level of polyaniline (−1.587 V). From this paper, it is also observed that the anodic polarization is greater than the cathodic polarization, thereby indicating that the overall corrosion of Alloy 57S 2 M NaOH containing 0.2 M ZnO and 700 ppm of polyaniline is under anodic control.

Originality/value

The results of the study clearly reveal that the overall corrosion of Alloy 57S aluminium in 2 M NaOH containing 0.2 M ZnO and 700 ppm of polyaniline is under anodic control. Hence, the 57S grade aluminium can be used as a potential candidate (anode) in alkaline batteries.

Details

Anti-Corrosion Methods and Materials, vol. 56 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 1 September 1967

S. Guruviah and K.S. Rajagopalan

Use of aluminium is coming into vogue in the canning industry. However, the very much higher cost of aluminium than tin plate inhibits the scope for substitution of tin plate by…

Abstract

Use of aluminium is coming into vogue in the canning industry. However, the very much higher cost of aluminium than tin plate inhibits the scope for substitution of tin plate by aluminium. It is therefore of interest to examine whether steel coated with aluminium by any of the known methods is suitable for manufacture of containers for canned products. Aluminium‐coated steel can be considered only if the coating has a more negative potential than the base metal. In a study of the behaviour of sprayed aluminium coatings on mild steel in sodium chloride solutions at different pHs, Ross has pointed out that sprayed aluminium (99.5%) is more negative than steel in neutral and alkaline solutions. In this paper, the potential relationships between steel, steel sprayed with aluminium, and aluminised steel in some organic acids commonly present in food stuffs are discussed.

Details

Anti-Corrosion Methods and Materials, vol. 14 no. 9
Type: Research Article
ISSN: 0003-5599

Article
Publication date: 18 May 2012

A.H. Gao, P.H. Pi, X.F. Wen, D.F. Zheng, Z.Q. Cai, J. Cheng and Z.R. Yang

The purpose of this paper is to enhance the anticorrosion property of aluminium pigments and to improve their compatibility with polymers in coating.

Abstract

Purpose

The purpose of this paper is to enhance the anticorrosion property of aluminium pigments and to improve their compatibility with polymers in coating.

Design/methodology/approach

Aluminium pigments encapsulated by organic‐inorganic layer were prepared by hydrolysis and condensation of organic silane acrylate resin and tetraethoxy silane (TEOS) on the surface of pigments via sol‐gel method. TEOS and poly (methyl methacryalte‐n‐butyl acrylate‐vinyl triethoxysilane) (PMBV) formed in advance by co‐polymerisation of methyl methacrylate (MMA), n‐butyl acrylate (BA) and vinyl triethoxysilane (VTES) were used as precursors. The adhesion property of the aluminium pigments was measured by peel test, and the loss of silvery appearance after encapsulation and acid soaking were both evaluated by colour lightness difference (ΔL) measurement. The encapsulated aluminium pigments were further characterised by means of FTIR, SEM, TG and XPS.

Findings

It was found that PMBV‐SiO2 thin films could be formed on the surface of aluminium pigments smoothly and uniformly, and the adhesion and anticorrosion performances of encapsulated aluminium pigments were improved significantly.

Research limitations/implications

The organic silane acrylate resin used as a precursor in the sol‐gel process could be synthesised from other aclyate monomers. In addition, the hydrolysis and condensation mechanism of organic silane acrylate resin on the surface of aluminium pigments need further studies.

Practical implications

The method developed provided a good solution to the two problems of aluminium pigments and increased their application values.

Originality/value

The method of improving adhesion and anticorrosion properties of aluminium pigments was novel and could find numerous applications in surface coatings and adhesives.

Article
Publication date: 1 March 1996

T. Jesionowski and A. Krysztafkiewicz

Presents the outcome of intensive research into highly dispersed sodium‐aluminium silicate. Optimal conditions of the precipitation process of sodium‐aluminium silicates of high…

Abstract

Presents the outcome of intensive research into highly dispersed sodium‐aluminium silicate. Optimal conditions of the precipitation process of sodium‐aluminium silicates of high dispersion degrees from the solution of sodium metasilicate were given. In the precipitation process water soluble aluminium salts were used. A physicochemical analysis and microscopic structure of the obtained silicates were performed. The products obtained are characterized by parameters comparable to those of the sodium‐aluminium silicate P‐820 (Degussa).

Details

Pigment & Resin Technology, vol. 25 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Expert briefing
Publication date: 22 December 2023

Highlighting the importance of decarbonising the sector, demand for aluminium is expected to rise by 40% by 2030. Decarbonisation of alumina refining is dependent on renewable…

Details

DOI: 10.1108/OXAN-DB284204

ISSN: 2633-304X

Keywords

Geographic
Topical
Article
Publication date: 22 November 2023

Dravesh Yadav, Ravi Sastri Ayyagari and Gaurav Srivastava

This paper numerically investigates the effect of cavity radiation on the thermal response of hollow aluminium tubes and facade systems subjected to fire.

Abstract

Purpose

This paper numerically investigates the effect of cavity radiation on the thermal response of hollow aluminium tubes and facade systems subjected to fire.

Design/methodology/approach

Finite element simulations were performed using ABAQUS 6.14. The accuracy of the numerical model was established through experimental and numerical results available in the literature. The proposed numerical model was utilised to study the effect of cavity radiation on the thermal response of aluminium hollow tubes and facade system. Different scenarios were considered to assess the applicability of the commonly used lumped capacitance heat transfer model.

Findings

The effects of cavity radiation were found to be significant for non-uniform fire exposure conditions. The maximum temperature of a hollow aluminium tube with 1-sided fire exposure was found to be 86% greater when cavity radiation was considered. Further, the time to attain critical temperature under non-uniform fire exposure, as calculated from the conventional lumped heat capacity heat transfer model, was non-conservative when compared to that predicted by the proposed simulation approach considering cavity radiation. A metal temperature of 550 °C was attained about 18 min earlier than what was calculated by the lumped heat capacitance model.

Research limitations/implications

The present study will serve as a basis for the study of the effects of cavity radiation on the thermo-mechanical response of aluminium hollow tubes and facade systems. Such thermo-mechanical analyses will enable the study of the effects of cavity radiation on the failure mechanisms of facade systems.

Practical implications

Cavity radiation was found to significantly affect the thermal response of hollow aluminium tubes and façade systems. In design processes, it is essential to consider the potential consequences of non-uniform heating situations, as they can have a significant impact on the temperature of structures. It was also shown that the use of lumped heat capacity heat transfer model in cases of non-uniform fire exposure is unsuitable for the thermal analysis of such systems.

Originality/value

This is the first detailed investigation of the effects of cavity radiation on the thermal response of aluminium tubes and façade systems for different fire exposure conditions.

Details

Journal of Structural Fire Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-2317

Keywords

Article
Publication date: 1 April 2005

Christina Radlbeck, Eszter Dienes and Dimitris Kosteas

To explore the potential and weaknesses of aluminium building products in practice and to consider the material's competitiveness and sustainable performance.

1506

Abstract

Purpose

To explore the potential and weaknesses of aluminium building products in practice and to consider the material's competitiveness and sustainable performance.

Design/methodology/approach

The characteristics of aluminium are reviewed and data is collected from architects and materials’ suppliers. These two groups are chosen because they have most influence on the builder's decision and consequently on the selection of the building material.

Findings

Standards addressing sustainability are currently being developed and will soon be obligatory for building and construction activities. These changes are also likely to have an impact on the conditions for competition.. Aluminium possesses high potential for sustainable building applications mainly due to its light‐weight, durability, formability, low maintenance need and excellent recycling properties. From the perspectives of architects and providers, these facts are not known sufficiently yet. In addition no correlations between sustainability and the current competitiveness of aluminium building products are observed.

Research limitations/implications

The research has been carried out in Germany, which may limit the usefulness of the results elsewhere.

Practical implications

A useful information source for architects, engineers and providers of aluminium building products.

Originality/value

This paper identifies the current knowledge gap of architects and providers concerning the potential of aluminium in respect to the whole life‐cycle as well as the use of sustainability to influence the competitiveness of aluminium products.

Details

Structural Survey, vol. 23 no. 2
Type: Research Article
ISSN: 0263-080X

Keywords

Article
Publication date: 1 October 1979

C.A. Smith

In part one the various properties of this important metallic pigment are considered.

Abstract

In part one the various properties of this important metallic pigment are considered.

Details

Pigment & Resin Technology, vol. 8 no. 10
Type: Research Article
ISSN: 0369-9420

1 – 10 of over 11000