What causes the pyroplastic deformation observed in porcelain?

Show Answers

Elevated temperature applied during the glazing processReduced temperature during the glazing stageIncorrect condensation procedureExcessively high firing temperature

Explanation

Pyroplastic flow in porcelain occurs when it is exposed to high temperatures during glazing, causing it to deform. Lower temperatures or improper condensation do not lead to this effect, and although firing temperature is important, it is the high temperature during glazing that specifically causes pyroplastic flow.