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Method for preparing yttrium oxide-based transparent ceramic employing two-step sintering method
The invention relates to a method for preparing yttrium oxide-based transparent ceramic employing a two-step sintering method. The method comprises the following steps: weighing raw material powder at the molar ratio of metal elements required for (Y1-xREx)2O3 (x is smaller than or equal to 0.3 and greater than or equal to 0.0); adding a sintering aid and a solvent, drying ball-milled slurry; sieving and burning; burning by virtue of a muffle furnace after molding, so as to obtain a Y2O3 biscuit; sintering through a two-step sintering process; and finally carrying out high-temperature isostatic pressing sintering, annealing and polishing, so as to obtain the yttrium oxide-based transparent ceramic. The Y2O3-based transparent ceramic prepared by the method has good uniformity; the average crystallite size is 100-300nm; the mechanical property of the Y2O3-based transparent ceramic is effectively improved; the transmittance at 1100nm is high; the method is suitable for a gain medium of a high power laser; the two-step sintering temperature is relatively low; and two-step sintering can be finished within a short period of time, so that the experiment cycle is shortened; and the production cost is reduced.
Method for preparing yttrium oxide-based transparent ceramic employing two-step sintering method
The invention relates to a method for preparing yttrium oxide-based transparent ceramic employing a two-step sintering method. The method comprises the following steps: weighing raw material powder at the molar ratio of metal elements required for (Y1-xREx)2O3 (x is smaller than or equal to 0.3 and greater than or equal to 0.0); adding a sintering aid and a solvent, drying ball-milled slurry; sieving and burning; burning by virtue of a muffle furnace after molding, so as to obtain a Y2O3 biscuit; sintering through a two-step sintering process; and finally carrying out high-temperature isostatic pressing sintering, annealing and polishing, so as to obtain the yttrium oxide-based transparent ceramic. The Y2O3-based transparent ceramic prepared by the method has good uniformity; the average crystallite size is 100-300nm; the mechanical property of the Y2O3-based transparent ceramic is effectively improved; the transmittance at 1100nm is high; the method is suitable for a gain medium of a high power laser; the two-step sintering temperature is relatively low; and two-step sintering can be finished within a short period of time, so that the experiment cycle is shortened; and the production cost is reduced.
Method for preparing yttrium oxide-based transparent ceramic employing two-step sintering method
ZHANG LE (author) / ZHANG QIAN (author) / WANG CHENG (author)
2015-04-22
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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