Vitrification is a process of: a. Chemical reaction bonding of aggregate ceramic powder b. Cementing aggregate ceramic powder with a liquefied material c. Solid-state diffusion of aggregate ceramic powder d. Viscous flow formation of ceramics

Answer: Viscous flow formation of ceramics

Explanation:

Vitrification is the transformation of a substance into a glass, or in other wods, non-crystalline amorphous solid. In the production of ceramics, vitrification is responsible for its impermeability to water.

Vitrification is usually achieved by heating materials until they liquidize, then cooling the liquid, often rapidly, so that it passes through the glass transition to form a vitrified solid. Certain chemical reactions also result in glasses.

The most common applications are in the making of pottery, glass, and some types of food, but there are many others, such as the vitrification of an antifreeze-like liquid in cryopreservation.