Final answer:
The danger of corrosion is a concern in chemical cleaning due to the disintegration of materials caused by chemical reactions. Fayed surfaces can undergo oxidation, leading to rust formation and potential weakening of the material.
Step-by-step explanation:
Chemical cleaning can cause concern due to the danger of corrosion. Corrosion is the disintegration of a material due to chemical reactions with other substances in the environment. Fayed surfaces, when exposed to certain chemicals, can undergo oxidation, leading to the formation of rust. This can weaken the material and pose a risk.