A kind of high entropy remgal11o19 ceramics and its preparation method and application
A technology of mgal11o19 and remgal11o19, which is applied in the field of high-entropy REMgAl11O19 ceramics and its preparation, can solve the problems of being unsuitable for mass industrial production, high energy consumption, and small furnace size
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0044] The present invention provides a high entropy REMgAl 11 o 19 The preparation method of pottery, comprises the following steps:
[0045] Rare earth metal oxides and Al 2 o 3 After the first mixing, followed by the first compression molding and the first calcination, the high-entropy REAlO 3 Precursor ceramics;
[0046] MgO and Al 2 o 3 After the second mixing, the second compression molding and the second calcination are carried out in sequence to obtain MgAl 2 o 4 Precursor ceramics;
[0047] The high entropy REAlO 3 Precursor ceramics, MgAl 2 o 4 Precursor ceramics and Al 2 o 3 After the third mixing, the third compression molding and the third calcination are carried out in sequence to obtain the high-entropy REMgAl 11 o 19 ceramics;
[0048] The temperatures of the first calcination, the second calcination and the third calcination are all below 1600°C.
[0049] In the present invention, unless otherwise specified, all preparation materials are comme...
Embodiment 1
[0085] According to the molar ratio of 0.2:0.2:0.2:0.2:0.067:1, La 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Nd 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Gd 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Sm 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Pr 6 o 11 Powder (average particle size 0.5μm, purity ≥ 99.9%) and Al 2 o 3 The powders (average particle size is 0.5 μm, purity ≥ 99.9%) are mixed, and wet ball milled in the ball milling medium of absolute ethanol, the rotating speed of ball milling is 300rpm, the time is 6h, after drying, put into the stainless steel mold, Hold the pressure for 1min under the pressure of 2MPa to obtain a light gray cylindrical body with a diameter of 12mm, place it in a muffle furnace and raise the temperature to 1400℃ at a rate of 10℃ / min, keep it for 4h, and cool with the furnace to obtain (La 0.2 Nd 0.2 Gd 0.2 SM 0.2 PR 0.2 )AlO 3 Precursor ceramics;
[0086] Ac...
Embodiment 2
[0097] According to the molar ratio of 0.1:0.2:0.2:0.2:0.1:1, La 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Nd 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Gd 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Sm 2 o 3 Powder (average particle size 0.5μm, purity ≥ 99.9%), Pr 6 o 11 Powder (average particle size 0.5μm, purity ≥ 99.9%) and Al 2 o 3 The powders (average particle size is 0.5 μm, purity ≥ 99.9%) are mixed, and wet ball milled in the ball milling medium of absolute ethanol, the rotating speed of ball milling is 250rpm, the time is 10h, after drying, put into the stainless steel mold, Hold the pressure for 2 minutes under a pressure of 1 MPa to obtain a light gray cylindrical green body with a diameter of 12 mm, place it in a muffle furnace and raise the temperature to 1450 °C at a rate of 5 °C / min, keep it for 2 hours, and cool with the furnace to obtain (La 0.1 Nd 0.2 Gd 0.2 SM 0.2 PR 0.3 )AlO 3 Precursor cera...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More