Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing YAG-based transparent ceramic through rotary evaporation drying
The invention discloses a method for preparing YAG (yttrium aluminum garnet)-based transparent ceramic by rotary evaporation drying, which comprises the following steps: carrying out heat treatment on Al2O3, Y2O3 and rare earth oxide, and then weighing according to a stoichiometric ratio (Y1-xRax3Al5O12, 0 < = x < = 0.05; adding a sintering aid and absolute ethyl alcohol; adding a grinding medium for ball milling, filtering the ball-milled slurry by using a gauze element, and then adding the filtered slurry into a rotary evaporation bottle; performing rotary evaporation and drying to obtain fluffy and uniform mixed powder without hardened blocks; carrying out compression molding on the mixed powder, and then carrying out cold isostatic pressing to obtain a ceramic green body which can be used for sintering; then calcining the ceramic green body in an air or oxygen atmosphere; carrying out vacuum sintering on the obtained ceramic green body; then, the obtained biscuit is annealed; and finally, performing double-sided polishing to obtain a final ceramic product. According to the invention, the preparation problem that a scattering center exists in large-size ceramic preparation is solved, and efficient production of transparent ceramic is realized.
本发明公开了一种旋蒸干燥制备YAG基透明陶瓷的方法，包括：将Al2O3、Y2O3和稀土氧化物热处理后按化学计量比(Y1‑xRex)3Al5O12称量，其中0≤x≤0.05；加入烧结助剂、无水乙醇；加入研磨介质球磨，使用纱网对球磨后浆料进行过滤，然后加入旋蒸瓶中；旋蒸干燥得到蓬松、均匀、无板结块的混合粉末；将混合粉末进行压制成型，然后进行冷等静压，得到可用于烧结的陶瓷坯体；然后对陶瓷坯体在空气或氧气气氛下进行煅烧；所得陶瓷坯体进行真空烧结；然后将所得素坯进行退火；最后经双面抛光得到最终陶瓷产品。本发明解决了大尺寸陶瓷制备存在散射中心的制备难题，实现了透明陶瓷的高效生产。
Method for preparing YAG-based transparent ceramic through rotary evaporation drying
The invention discloses a method for preparing YAG (yttrium aluminum garnet)-based transparent ceramic by rotary evaporation drying, which comprises the following steps: carrying out heat treatment on Al2O3, Y2O3 and rare earth oxide, and then weighing according to a stoichiometric ratio (Y1-xRax3Al5O12, 0 < = x < = 0.05; adding a sintering aid and absolute ethyl alcohol; adding a grinding medium for ball milling, filtering the ball-milled slurry by using a gauze element, and then adding the filtered slurry into a rotary evaporation bottle; performing rotary evaporation and drying to obtain fluffy and uniform mixed powder without hardened blocks; carrying out compression molding on the mixed powder, and then carrying out cold isostatic pressing to obtain a ceramic green body which can be used for sintering; then calcining the ceramic green body in an air or oxygen atmosphere; carrying out vacuum sintering on the obtained ceramic green body; then, the obtained biscuit is annealed; and finally, performing double-sided polishing to obtain a final ceramic product. According to the invention, the preparation problem that a scattering center exists in large-size ceramic preparation is solved, and efficient production of transparent ceramic is realized.
本发明公开了一种旋蒸干燥制备YAG基透明陶瓷的方法，包括：将Al2O3、Y2O3和稀土氧化物热处理后按化学计量比(Y1‑xRex)3Al5O12称量，其中0≤x≤0.05；加入烧结助剂、无水乙醇；加入研磨介质球磨，使用纱网对球磨后浆料进行过滤，然后加入旋蒸瓶中；旋蒸干燥得到蓬松、均匀、无板结块的混合粉末；将混合粉末进行压制成型，然后进行冷等静压，得到可用于烧结的陶瓷坯体；然后对陶瓷坯体在空气或氧气气氛下进行煅烧；所得陶瓷坯体进行真空烧结；然后将所得素坯进行退火；最后经双面抛光得到最终陶瓷产品。本发明解决了大尺寸陶瓷制备存在散射中心的制备难题，实现了透明陶瓷的高效生产。
Method for preparing YAG-based transparent ceramic through rotary evaporation drying
一种旋蒸干燥制备YAG基透明陶瓷的方法
03.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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