| 摘要 |
This invention provides a process for rapid forming of a ceramic green part. It is based upon an effect, that nano-scaled oxide colloid can be gelled by drying. Slurry can be obtained by mixing the oxide colloid with ceramic powder and dissolved agent. After paving a slurry film on a platform, a focused high-energy beam scans over the surface of said slurry film; the irradiated portion will be dried and build a two-dimensional (2-D) pattern. In addition, another slurry film is paved on the finished 2-D pattern layer. The high-energy beam scans once more on slurry film locally; another 2-D pattern is built. This built pattern can be connected with the pattern beneath it. After multiple repetitions of this procedure a three-dimensional (3-D) part can be formed. Because gelling is an irreversible reaction, the gelled portion of slurry won't be dissolved in water. Therefore, the non-gelled slurry can be separated from the gelled ceramic green part by flushing.
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