科研之友
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摘要
We investigated the densification of undoped, nanocrystalline yttria (Y2O3) powder by spark plasma sintering (SPS) at sintering temperatures between 650 degrees C and 1050 degrees C at a heating rate of 10 degrees C/min and an applied stress of 83 MPa. In spite of the low sinterability of the undoped Y2O3, a remarkable densification of the powder started at about 600 degrees C, and a theoretical density of more than 97% was achieved at a sintering temperature of 850 degrees C with a grain size of about 500 nm. The low temperature SPS is effective for fabricating dense Y2O3 polycrystals.
- 出版日期2008-5
