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Details
Centrifugal slip casting of zirconia (TZP)
| Author | Huisman, W.; Graule, T.; Gauckler, L.J. | |
| Year | 1994 | |
| Type | Journal Article | |
| Journal | J. Eur. Ceram. Soc. | |
| Volume | 13 | |
| Issue | 1 | |
| Pages | 33-39 | |
| Custom 1 | JA | |
| Custom 2 | COL | |
| Abstract | Tetragonal zirconia (3Y-TZP) ceramic parts were produced via centrifugal slip casting. This forming method combines the advantages of wet powder preparation with a very efficient densification technology to produce massive and near-net-shape ceramic parts. Aqueous TZP slurries with solids contents up to 42.3 vol.% and low viscosity were prepared using Darvan C as a deflocculant and ultrasonic cavitation to achieve a good homogenization. At solids loadings above 40 vol.% differential segregation effects during centrifugation are negligible. Very good particle packing with narrow pore size distributions (from r25 = 21.1 nm to r75 = 17.3 mm) were achieved. High green densities of up to 57% of theoretical density (TD) were obtained after centrifuging at 4000 g for 90 min. High sintered densities (>99.3% TD) were achieved at sintering temperatures as low as 1300 [deg]C with 2 h holding time. Sintered compacts have a very fine microstructure with an average grain size of 0.3 [micro;]m and narrow grain size distribution. Centrifugal slip casting has the potential to produce massive ceramic parts with reduced defect sizes and thus high reliability. [Author abstract; 14 Refs; In English] | |
| URL | ||
| Record Number | 159 | |
| Group | nonmet |
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