Ulkokerrosten
Ulkokerrosten is a Finnish term that denotes the outer layers or crusts of a material, object, or sample. The word combines ulko meaning outer and kerros meaning layer, and its genitive plural form ulkokerrosten is used in Finnish texts to refer to these outer shells in various contexts. The term is primarily a descriptive label rather than a specific scientific category, and its exact meaning can vary with discipline.
In geology and materials science, ulkokerrosten refers to the weathered or surface rind that forms on rocks,
In engineering and materials research, ulkokerrosten can describe protective oxide or passivation layers that form on
Formation of ulkokerrosten generally involves exposure to environmental factors such as air, moisture, and temperature changes,