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Efflorescence
In chemistry, the term efflorescence refers to the appearance of white or coloured crystals or deposits on the surface of materials such as metals, glass or ceramics. These deposits are formed by the evaporation of substances that are volatile at room temperature, such as salts or acids.
The efflorescence occurs when the volatile substances evaporate in the air and settle on the surface of the material. When the substances come into contact with moisture, they can react and form crystals that become visible as efflorescence on the surface.
Efflorescence can lead to corrosion and material damage and is therefore undesirable in many applications. To prevent efflorescence, materials can be coated or treated to protect their surface.
