Influence of atmospheric pollution on corrosion of materials in Saudi Arabia

ABSTRACT

Research has been carried out for 7 years in eight marine atmospheres with annual average chloride deposition rates of 63–704 mg Cl⁻/m² day and sulphur dioxide deposition rates of 6.851–10.887 mg SO₂/m² day. A study of environmental parameters: temperature, relative humidity, airborne chloride and SO₂ on the site have been accomplished. Apart from this, the paper also considers the corrosion rates of carbon steel, stainless steel (AISI 304) and galvanised steel and the resulting corrosion products and layers, and their dependence of atmospheric salinity of the site. X-ray diffraction analyses were carried out in order to understand the lepidocrocite and goethite, high akaganeite and magnetite contents of corrosion products. Corrosion rates were determined by weight loss. The aggressive classification was made as per the ISO 9223. Moreover, a technique for calculation of coefficients in the power-linear function for long-term prediction of metal corrosion losses of exposed metals and alloy are presented.

KEYWORDS:

• Atmospheric corrosion
• XRD
• corrosivity categories
• kinetics parameters
• weight loss

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

A. I. Ibrahim http://orcid.org/0000-0002-5818-5744

Additional information

Funding

The authors sincerely appreciate funding of the research group by the Deanship of Scientific Research at King Saud University (# RGP-1437-003).