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Preparation method of yttria-base transparent ceramic
The invention relates to a preparation method of yttria-base transparent ceramic, which comprises the following steps: weighing raw materials according to (YxRE[1-x])2O3 (0.96<=x<=0.999), dissolving Y2O3 and HNO3 to obtain Y(NO3)3, dissolving the Y(NO3)3 and Re(NO3)3 in deionized water, and adding a dispersing agent and a sintering assistant to prepare a mixed solution used as a mother solution; mixing ammonium bicarbonate and ammonia water with deionized water to obtain a solution used as a precipitant; dropwisely adding the precipitant solution into the mother solution, stirring, and standing for aging; flushing, filtering to obtain a precipitate, drying, grinding and screening; carrying out calcination treatment; screening the calcined powder, and forming to obtain a biscuit; and carrying out vacuum sintering on the biscuit, carrying out annealing treatment, and polishing to obtain the transparent yttria ceramic. The prepared yttria transparent ceramic has the advantages of high density and high light transmittance. The method has the advantages of simple technical process, cheap and accessible raw materials of the nano powder, and no pollution, and is beneficial to industrial production.
Preparation method of yttria-base transparent ceramic
The invention relates to a preparation method of yttria-base transparent ceramic, which comprises the following steps: weighing raw materials according to (YxRE[1-x])2O3 (0.96<=x<=0.999), dissolving Y2O3 and HNO3 to obtain Y(NO3)3, dissolving the Y(NO3)3 and Re(NO3)3 in deionized water, and adding a dispersing agent and a sintering assistant to prepare a mixed solution used as a mother solution; mixing ammonium bicarbonate and ammonia water with deionized water to obtain a solution used as a precipitant; dropwisely adding the precipitant solution into the mother solution, stirring, and standing for aging; flushing, filtering to obtain a precipitate, drying, grinding and screening; carrying out calcination treatment; screening the calcined powder, and forming to obtain a biscuit; and carrying out vacuum sintering on the biscuit, carrying out annealing treatment, and polishing to obtain the transparent yttria ceramic. The prepared yttria transparent ceramic has the advantages of high density and high light transmittance. The method has the advantages of simple technical process, cheap and accessible raw materials of the nano powder, and no pollution, and is beneficial to industrial production.
Preparation method of yttria-base transparent ceramic
ZHANG LE (author) / WANG ZHONGYING (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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