Christian Vargel has over 50 years' experience in the corrosion and metallurgy of aluminium. He was chief engineer at Pechiney which was the European leader of wrought, extruded and cast aluminium products – where he primarily focused on corrosion of aluminium alloys, from a practical perspective. He surveyed andappraised numerous cases of in-service aluminium corrosion: building, transport, territory equipment, electrical and applications, and renewable energies such as solar, desalination and OTEC.