galvanoitu

Galvanoitu is a Finnish term referring to galvanized metal. Galvanization is a process of applying a protective zinc coating to steel or iron to prevent rusting. This coating is typically achieved through hot-dip galvanizing, where the metal is immersed in a bath of molten zinc. Electrogalvanizing, a less common method, uses electrolysis to deposit the zinc layer.

The zinc coating acts as a sacrificial anode, meaning it corrodes in preference to the base metal. This electrochemical protection is highly effective in preventing rust, even if the coating is scratched or damaged. The thickness and uniformity of the zinc layer determine the longevity of the protection.

Galvanized metal is widely used in construction, infrastructure, and manufacturing due to its durability and corrosion resistance. Applications include roofing, fencing, guardrails, structural beams, pipes, and automotive parts. The distinctive spangled pattern often seen on galvanized surfaces is a result of the cooling and crystallization of the zinc coating during the hot-dip process. While generally durable, galvanized coatings can be affected by highly acidic or alkaline environments.