Abstract

Polyethylene coatings were applied to aluminium by melting, and adhesion measured by a peel test. The formation of hydrated oxide films on the metal is shown to greatly increase adhesion for coatings applied in nitrogen, through formation of needle-shaped oxide crystals. Particles of oxide deposited on the metal are found to have a similar effect. These treatments improve the durability of the bond when exposed to water, especially when coatings have been applied in air.

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