Abstract: For the synchronous sinter of Al₂O₃ and HAP, it is necessary to decrease the sintering temperature of Al₂O₃ to prevent decomposition of HAP.
A/W bioglass which has low melting point and bioactivity was selected as the liquid phase sintering additive, perfect A/W-Al₂O₃ slurries and A/W-Al₂O₃
tapes were fabricated and various factors which havegreat effect on the properties of slurries and the processing of tape casting
were investigated. Because the bioglass evaporates easily at high temperature, the densities of sample are greatly effected by sintering time and temperature.
But the relative density of the samples prepared at 1300℃ can be reached up to 99.17%, therefore, the A/W-Al₂O₃ and HAP tapes can be sintered
together at low temperature, it is possible to prepare the laminated bioactivity implant with porous bioactive HAP and A/W-Al₂O₃ substrate.

Key words: tape casting, slurry, bioglass, bioactivity, implant