Gelcasting of alumina and zirconia using chitosan gels

摘要: Abstract A new gelcasting system has been analysed. The gel forming is based on a solution of 1% chitosan in diluted acetic acid and reaction with glutaraldehyde. An Al 2 O 3 powder-loading rate 50 vol.% was achieved under optimised conditions. Advantages this include the use biopolymer (chitosan), possibility air drying green parts, at ambient temperature, versatility process by changing parameters leading to well specified times. effect time, slurry properties, part properties are presented. Slurries prepared from ZrO powders were not fluid. However, dense parts could still be obtained transferring these slurries mould drying.