Slip Casting of Al₂O₃ Slurries Prepared by Wet Jet Milling

Abstract

Green body fabricated by slip casting using wet jet milled slurry, which had low viscosity and low re-flocculation property, had very high relative density and showed very small shrinkage during sintering. The square of the thickness of green bodies was proportional to casting time indicating slip casting was implemented well. The relative density of the green body prepared by wet jet milled slurry was 67%, markedly higher than that of ball milled slurry (58%). After sintering, the compacts prepared by wet jet milled and ball milled slurry had a similar relative density of 99%. The linear shrinkages of the sintered bodies prepared by wet jet milled and ball milled slurry were 11.5 and 16.8%, respectively.