Method for controlling firing shrinkage of ceramic green body

摘要

The present invention provides a method for controlling a firing shrinkage of a ceramic green body. The method includes the steps of: subjecting a ceramic powder to a pretreatment by which a spherical diameter (Rs) of the ceramic powder is adjusted to be 1 mu m or less, wherein Rs is expressed by an equation of Rs( mu m)=6/ rho S ( rho is a true density (g/cm3) of the ceramic powder, and S is a BET specific surface area (m2/s) of the ceramic powder.); subjecting the ceramic powder to heat treatment at a specific temperature calculated in advance; molding the ceramic powder to obtain a ceramic green body; and firing the ceramic green body. A temperature for the heat-treatment is calculated of the basis of a correlation between calculative rates for firing and arbitrary selected temperatures.