Aluminizing

High-Temperature Metal Protection

Diffusion Alloys provides diffusion-based surface engineering to protect metal components operating in demanding high-temperature environments. Our technologies agradation mechanisms such as oxidation scaling, sulphidation, carburisation, metal dusting, hot corrosion in aggressive atmospheres and wear at elevated temperatures. We apply Aluminizing, Chromizing and Boronizing processes that form metallurgically bonded surface layers designed for long-term stability under thermal cycling.

Coatings Development

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Many components need a coating matched to a defined set of operating conditions. Diffusion Alloys provides application-specific engineering support, working directly with customers to select or develop diffusion coatings suitable for their environment. This includes identifying the degradation mechanisms present, the temperatures involved and the atmosphere the component will experience, so the coating can be engineered to perform reliably in service.

Aluminizing

Aluminizing creates an aluminium-rich diffusion layer that forms a stable aluminium-oxide barrier during operation. It offers strong resistance to oxidation and hot corrosion at elevated temperatures. Typical applications include heat exchangers, gas turbine parts and boiler components where high-temperature stability is essential.

Chromizing

Chromizing produces a chromium-enriched diffusion layer that improves resistance to sulphidation, carburisation and metal dusting. It is suitable for components exposed to carbon-rich gases, sulphur-bearing gases or reducing atmospheres.

Boronizing

Boronizing introduces boron into the surface to create a very hard wear-resistant layer. This is useful where abrasion, erosion or sliding wear occurs alongside high temperatures. The coating remains stable under thermal cycling and provides long-term surface durability.

Metallurgical Bond

All diffusion coatings offered by Diffusion Alloys become part of the substrate rather than sitting on top of it. This metallurgical bond provides strong adhesion and resistance to spalling or flaking even when components undergo repeated thermal cycling.

Operational Benefits

Diffusion coatings can extend component life, increase inspection and maintenance intervals and reduce replacement frequency. The result is improved reliability and lower lifetime operating costs in high-temperature systems.

Industries and Applications

Diffusion Alloys supports process industries, clean-technology sectors including hydrogen production, fuel cells and nuclear applications as well as general industrial components that face high-temperature degradation or wear.