Corrosion of aluminium and aluminium alloys (their inhibition) Creative Commons, Attribution alone (BY)
Authors: Jožef Stefan Institute
This content is provided in languages:

The purpose is to investigate the influence of the structure of aluminium and aluminium alloys used in the transport industry on corrosion resistance in chloride medium and present the influence of the inhibition with cerium acetate - Ce(CH3COO)3.

Aluminium is very corrosion-resistant in environmental conditions, because of the formation of a protective oxide layer on the surface - passivation. But exposing aluminium to more aggressive media, such as a solution of chloride salts, passivation loses efficiency. Chloride ions penetrate through the oxide pores, react with the aluminium, and form corrosion. The same applies to aluminium alloys, which additionally include metal intermetallic consisting of copper, zinc, iron, or magnesium. Intermetallic in alloys improve the mechanical properties of the alloy, but they are often more anodic than the aluminium. Consequently, the inclusions reduce corrosion resistance and present an incisal part of the corrosion process. Corrosion protection can be improved, e.g. by inhibition of these metal inclusions. One of the possibilities is the addition of cerium ions into the corrosive media. The cerium precipitates to the aluminium or aluminium surface, thereby improving corrosion resistance.

Workforce in Chemistry

Chemistry is everywhere in our daily life and there are many jobs chemistry graduates do. Around 540,000 students study chemistry, physics, astronomy, and earth science in the EU. Chemistry graduates work as analysts, healthcare scientists, clinical chemists, forensic scientists, nanotechnologists, pharmacologists and toxicologists among others. Jobs for chemists, other scientists and engineers grew by 7% in the past five years. Jobs for technicians in the field grew by 2%. Overall, they account for 7% of all jobs in the EU. As of 2016, around 15 million European science and engineering workers are employed. They work in a variety of sectors, many of which related with chemical industry, such as agrochemicals, metallurgical, petrochemicals, pharmaceuticals, and plastics and polymers. Many also work in professional services, utilities, and in the education systems. In the next years, jobs for chemistry scientists, other researchers and engineers will increase by 13%, and jobs for science and engineering technicians will increase by 2%.

  45 min
Number of staff
Education Level
15-18 years
Science Discipline
Home use
Classroom use
Supervision required
Parent (legal guardian supervision required
Teacher supervision required
Knowledge prerequisites
Technical requirements
You'll need to buy some materials
Printed materials required
Installation effort
No installation required on typical computer

You might also like
FIND SIMILAR Evaluate us!