Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alumina ceramic, preparation method thereof and ceramic bearing
The invention relates to aluminum oxide ceramic, a preparation method thereof and a ceramic bearing. The preparation method of the aluminum oxide ceramic comprises the following steps: mixing the following raw materials in percentage by mass: 35%-99% of aluminum oxide, 0.5%-60% of zirconium oxide and 0.5%-5.0% of a sintering aid to obtain ceramic powder, wherein the particle sizes of the raw materials are nanoscale, and the sintering aid comprises magnesium oxide, calcium oxide, sodium oxide, hafnium oxide and potassium oxide, molding the ceramic powder to obtain a ceramic green body, carryingout normal pressure sintering on the ceramic green body at 1400-1500 DEG C, and then carrying out hot isostatic pressing sintering at 1300-1350 DEG C under 100-200 MPa to obtain the aluminum oxide ceramic. The preparation method of the aluminum oxide ceramic can be used for breaking the aluminum oxide ceramic with relatively high toughness.
本发明涉及一种氧化铝陶瓷及其制备方法和陶瓷轴承。上述氧化铝陶瓷的制备方法包括如下步骤：将原料混合，得到陶瓷粉体，其中，按质量百分含量计，原料包括：35％～99％的氧化铝、0.5％～60％的氧化锆及0.5％～5.0％的烧结助剂，且原料的粒径均为纳米级，烧结助剂包括氧化镁、氧化钙、氧化钠、氧化铪及氧化钾；将陶瓷粉体成型，得到陶瓷坯体；将陶瓷坯体在1400℃～1500℃下进行常压烧结，然后在1300℃～1350℃、100MPa～200MPa下进行热等静压烧结，得到氧化铝陶瓷。上述氧化铝陶瓷的制备方法能够断裂韧性较高的氧化铝陶瓷。
Alumina ceramic, preparation method thereof and ceramic bearing
The invention relates to aluminum oxide ceramic, a preparation method thereof and a ceramic bearing. The preparation method of the aluminum oxide ceramic comprises the following steps: mixing the following raw materials in percentage by mass: 35%-99% of aluminum oxide, 0.5%-60% of zirconium oxide and 0.5%-5.0% of a sintering aid to obtain ceramic powder, wherein the particle sizes of the raw materials are nanoscale, and the sintering aid comprises magnesium oxide, calcium oxide, sodium oxide, hafnium oxide and potassium oxide, molding the ceramic powder to obtain a ceramic green body, carryingout normal pressure sintering on the ceramic green body at 1400-1500 DEG C, and then carrying out hot isostatic pressing sintering at 1300-1350 DEG C under 100-200 MPa to obtain the aluminum oxide ceramic. The preparation method of the aluminum oxide ceramic can be used for breaking the aluminum oxide ceramic with relatively high toughness.
本发明涉及一种氧化铝陶瓷及其制备方法和陶瓷轴承。上述氧化铝陶瓷的制备方法包括如下步骤：将原料混合，得到陶瓷粉体，其中，按质量百分含量计，原料包括：35％～99％的氧化铝、0.5％～60％的氧化锆及0.5％～5.0％的烧结助剂，且原料的粒径均为纳米级，烧结助剂包括氧化镁、氧化钙、氧化钠、氧化铪及氧化钾；将陶瓷粉体成型，得到陶瓷坯体；将陶瓷坯体在1400℃～1500℃下进行常压烧结，然后在1300℃～1350℃、100MPa～200MPa下进行热等静压烧结，得到氧化铝陶瓷。上述氧化铝陶瓷的制备方法能够断裂韧性较高的氧化铝陶瓷。
Alumina ceramic, preparation method thereof and ceramic bearing
氧化铝陶瓷及其制备方法和陶瓷轴承
ZHU ZUOXIANG (Autor:in) / TAN YICHENG (Autor:in)
19.06.2020
Patent
Elektronische Ressource
Chinesisch
Nanocrystalline alumina ceramic and preparation method thereof
| Europäisches Patentamt | 2024
Alumina ceramic substrate and preparation method thereof
| Europäisches Patentamt | 2023
Alumina foamed ceramic and preparation method thereof
| Europäisches Patentamt | 2023