Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of zirconia ceramic
The invention provides a preparation method of zirconia ceramic, and the method comprises the following steps of: slurry preparation: selecting nano or submicron zirconia ceramic powder, and mixing the nano or submicron zirconia ceramic powder with a dispersing agent and a solvent for the first time to prepare a first mixture; mixing the first mixture with PVB glue for the second time to obtain slurry; wherein the zirconia ceramic powder is rare earth doped zirconia powder, the general formula of the zirconia ceramic powder is Zr1-xRE2xO2+x, RE is a +3 valence state rare earth element, and x is more than or equal to 0.01 and less than or equal to 0.05. a defoaming step: carrying out vacuum defoaming treatment on the slurry to obtain defoamed slurry; a tape casting step: carrying out tape casting on the defoamed slurry to obtain a tape casting membrane; a green body preparation step: laminating the tape casting membrane and then carrying out isostatic pressing treatment to obtain a ceramic green body; and a solidification step. The preparation method of the zirconia ceramic provided by the invention can effectively prevent generation of pores in the zirconia ceramic, greatly improves the compactness and strength of the zirconia ceramic, and avoids phase change aging of the ceramic.
本发明提供了一种氧化锆陶瓷的制备方法，包括以下步骤：浆料制备：选取纳米或者亚微米级别的氧化锆陶瓷粉体，并将其与分散剂和溶剂进行第一次混合，制得第一混合物；再将第一混合物与PVB胶水进行第二次混合，得到浆料；所述氧化锆陶瓷粉体为稀土掺杂氧化锆粉体，其通式为Zr1‑xRE2xO2+x，其中，RE为+3价态的稀土元素，0.01≤x≤0.05。脱泡步骤：将所述浆料进行真空脱泡处理，得到脱泡后的浆料。流延步骤：将所述脱泡后的浆料流延，得到流延膜片。生坯制备：将所述流延膜片叠层后进行等静压处理，得到陶瓷生坯。固结步骤。本发明提供的氧化锆陶瓷的制备方法可有效防止氧化锆陶瓷中的气孔产生，大大提高了氧化锆陶瓷的致密度及强度，避免了陶瓷的相变老化。
Preparation method of zirconia ceramic
The invention provides a preparation method of zirconia ceramic, and the method comprises the following steps of: slurry preparation: selecting nano or submicron zirconia ceramic powder, and mixing the nano or submicron zirconia ceramic powder with a dispersing agent and a solvent for the first time to prepare a first mixture; mixing the first mixture with PVB glue for the second time to obtain slurry; wherein the zirconia ceramic powder is rare earth doped zirconia powder, the general formula of the zirconia ceramic powder is Zr1-xRE2xO2+x, RE is a +3 valence state rare earth element, and x is more than or equal to 0.01 and less than or equal to 0.05. a defoaming step: carrying out vacuum defoaming treatment on the slurry to obtain defoamed slurry; a tape casting step: carrying out tape casting on the defoamed slurry to obtain a tape casting membrane; a green body preparation step: laminating the tape casting membrane and then carrying out isostatic pressing treatment to obtain a ceramic green body; and a solidification step. The preparation method of the zirconia ceramic provided by the invention can effectively prevent generation of pores in the zirconia ceramic, greatly improves the compactness and strength of the zirconia ceramic, and avoids phase change aging of the ceramic.
本发明提供了一种氧化锆陶瓷的制备方法，包括以下步骤：浆料制备：选取纳米或者亚微米级别的氧化锆陶瓷粉体，并将其与分散剂和溶剂进行第一次混合，制得第一混合物；再将第一混合物与PVB胶水进行第二次混合，得到浆料；所述氧化锆陶瓷粉体为稀土掺杂氧化锆粉体，其通式为Zr1‑xRE2xO2+x，其中，RE为+3价态的稀土元素，0.01≤x≤0.05。脱泡步骤：将所述浆料进行真空脱泡处理，得到脱泡后的浆料。流延步骤：将所述脱泡后的浆料流延，得到流延膜片。生坯制备：将所述流延膜片叠层后进行等静压处理，得到陶瓷生坯。固结步骤。本发明提供的氧化锆陶瓷的制备方法可有效防止氧化锆陶瓷中的气孔产生，大大提高了氧化锆陶瓷的致密度及强度，避免了陶瓷的相变老化。
Preparation method of zirconia ceramic
一种氧化锆陶瓷的制备方法
YU MINGXIAN (Autor:in) / XIAN RUIWEI (Autor:in) / ZHANG LIN (Autor:in) / WANG WEIJIANG (Autor:in) / LIU YOUCHANG (Autor:in) / DAI GAOHUAN (Autor:in) / WANG CHAO (Autor:in) / HE PEIYU (Autor:in) / HE XIAOGANG (Autor:in) / YAO WEICHANG (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Zirconia ceramic preparation method and zirconia ceramic identification card
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2024