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| Study on microwave sintering of porous $\beta$--TCP/HA biphasic bioceramics |
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| 四川大学 |
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Cite this article:
;. Study on microwave sintering of porous $\beta$--TCP/HA biphasic bioceramics. Chin J Mater Res, 2004, 18(4): 429-434.
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Abstract Porous $\beta$--TCP/HA biphasic bioceramics were sintered by a microwave processing
system to improve both the mechanical strength and the bioactivity.
Through the optimization of sintering conditions, such as the sintering temperature,
the holding time and the heating speed, porous bioceramics with average crystal size
of 400 nm, porosity of 48\%, and tensile strength of 1.10 MPa were prepared. To achieve
similar linear shrinkage and tensile strength, the microwave sintering temperature
reduced about 100℃. The comparison between conventional sintered specimens and microwave
sintered specimens showed that the latter exhibit smaller grain size and higher
tensile strength. After immersion in simulated body fluid, the amount of bone--like
apatite formed on the specimens sintered by microwave processing system was more than
that of specimens sintered by conventional furnace. The results indicate that it is
possible to improve both the mechanical strength and bioactivity of Ca--P
bioceramics by microwave sintering.
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Received: 01 September 2004
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