K2O

K₂O (potassium oxide) is an inorganic ceramic compound and a basic oxide that serves primarily as a precursor and constituent in glass and ceramic formulations rather than as a standalone structural material. It is widely employed in glass manufacturing, particularly in soda-lime-silicate and borosilicate glass production, where it acts as a flux to lower melting temperatures and improve workability. K₂O is also used in ceramic glazes, refractories, and specialty materials such as potassium silicate coatings; engineers select it for applications requiring controlled glass transition behavior, chemical durability, or thermal stability in high-temperature environments.