Abstract
Rod like test piece and bobbin type test piece were produced by the injection molding of alumina or zirconia powder with several organic binders including polyethylene glycol(PEG). Following injection molding, these test pieces were submerged in a alcohol to extract PEG in the organic binders for 1-12 hour at room temperature. After the solvent debinding process of PEG by alcohol, the test pieces containg the residual binders were heated up to 400°C at a rate of 20-200°C/hr, and then sintered at 1300-1620°C. The main results are summarized as follows: 1)This solvent debinding process(SDP)of PEG by alcohol is nearly 5-10 times faster than conventional thermal debinding process. 2)The density of the sintered test pieces go up to over 99% of theoretical values by means of SDP. 3)It makes possible to produce the CIM parts with ultra fine zilconium powder(>15m2/g) by means of SDP.
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