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Due to the increasing use of aluminium alloys in many industrial sectors, they have to withstand increasingly aggressive environments. Various types of anti-corrosion treatment have long been applied. Today, environmental regulations to minimize environmental impact and the demand for long-life sustainability have led to the development of numerous anti-corrosion solutions. The aim of this article is to detail the anti-corrosion treatments currently in use and their protection mechanism. The processes are discussed according to the coating formation mechanism: chemical and electrochemical conversion processes (anodisation), paint-type processes and thermomechanical surface processes.
Battery ageing is complex and relies on multiple parameters depending on materials and design. Limiting ageing is a major economic and environmental goal, especially as more and more applications are targeting battery cycle life over 10 years with autonomy loss below 20-30%. Being able to diagnose, slow down and predict battery aging is essential. Root cause reactions and stress factors are studied for more than 30 years and become more and more precise and specific according to materials and usage conditions. These works are guiding now the development of mitigation strategies and prediction models. This article presents the main causes of performances degradation, consequences on internal components and battery behaviour and some of ageing mitigation strategies.
Corrosion management is basically an optimisation of the global corrosion costs, and what first matters is to define the nature of such optimum, and then the best way to reach it and through which alloys. Much before choosing which alloy, this indeed requires some general information on what is usually implemented, when and where.
The transport and storage of hydrogen gas is envisaged to facilitate the development of dedicated large-scale infrastructure. However, metallic alloys may present a loss of ductility in an environment containing hydrogen gas. This degradation of the mechanical properties is called hydrogen embrittlement. This article first describes the specificities of a hydrogen gas environment and the different means of characterizing hydrogen embrittlement. The possible damage mechanisms are then briefly recalled. Finally, the mechanical properties of metal alloys used for the transport and storage of hydrogen under pressure are described.
The use of pipelines is one of the safest manner to transport hazardous fluids such as oil or natural gas. But, to ensure the integrity during operation of the infrastructures mainly made of steel, it is necessary to correctly protect them from external aggression such as corrosion. This article presents a description of different systems used for mainline coating and also for welded steel joint and other pipeline equipment (bends, fittings). The paper presents the controls associated and the rehabilitation of operating networks.
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