Study on the Molding Process of Nano-Ceramics

Abstract

Nano-ceramics with excellent strength, toughness, oxidation resistance, corrosion resistance and the like metals superplasticity show an attractive application prospect. However, the production of high density of nano-ceramics is very difficult. This paper focuses on the preparation of concentrated suspension slurry, the main technical parameters and the additive proportion of raw materials. The optimum dosage of dispersant PAANa is 1.4wt%. When the PH value is about 9, the best stability of slurry is achieved. When the milling time reaches 10h, the lowest viscosity is reached. The solid content viscosity of slurry increases with the decrease of the slurry temperature. Solid phase volume with 40vol% of slurry can be successfully cast out the mould homogeneously.