1. Aqueous Colloidal Injection Molding of Ceramics (CIMC) Based on Gelation

In this chapter, aqueous colloidal injection molding (CIMC), which is based on gelation of monomer polymerization, like a reactive injection molding of double slurry of polyester, is discussed systematically. The solidification mechanism is based on gelation of monomer polymerization. It was found that pressure can induce the polymerization of the monomer. The gelation time can be effectively controlled by both temperature and pressure. The testing equipment of gel point was developed and used to test the gel reaction of the monomer in the suspension under different pressures. A machine of for ceramic colloidal injection molding was developed. It was observed that copper accelerated the polymerization of the monomer. Therefore, copper parts are forbidden for use in a CIMC machine.