Thermistor based on high-entropy oxide, and preparation method thereof
A thermistor and oxide technology, which is applied to resistors with negative temperature coefficients, resistors, non-adjustable metal resistors, etc., can solve problems such as affecting the stability of thermistors
Examples
Embodiment 1
[0022] a. According to Co:Mn:Fe:Ni:Zn=1:1:1:1:1, accurately weigh trimanganese tetraoxide, tricobalt tetraoxide, nickel oxide, ferric oxide and zinc oxide, put them into a ball mill jar, add Deionized water and absolute ethanol with a solvent volume ratio of 1:1, the ball mill jar is placed in a planetary ball mill, and ground for 10 hours to obtain a mixture;
[0023] b. Dry the mixture in step a in an oven at a temperature of 85°C, and then keep it at a constant temperature of 1000°C for 20 hours to melt it into a high-entropy oxide material with a single spinel structure;
[0024] c. Grinding the high-entropy oxide powder material obtained in step b for a second time in a planetary ball mill for 10 hours, and drying to obtain a powder;
[0025] d. The powder obtained in step c is pre-pressed and then isostatically pressed, and the pressure is controlled at 350Mpa and kept for 5 minutes;
[0026] e. Sinter the isostatically pressed block obtained in step d at a temperature ...
Embodiment 2
[0029] a. According to Co:Mn:Fe:Ni:Zn=1:1:1:1:1, accurately weigh the five oxides of trimanganese tetraoxide, tricobalt tetraoxide, nickel oxide, ferric oxide and zinc oxide, and put them into the ball mill In the tank, add deionized water and absolute ethanol with a solvent volume ratio of 1:1, place the ball milling tank in a planetary ball mill, and grind for 10 hours to obtain a mixture;
[0030] b. Dry the mixture in step a in an oven at a temperature of 85°C, and then keep it at a constant temperature of 1100°C for 15 hours to melt it into a high-entropy oxide material with a single spinel structure;
[0031] c. Grinding the high-entropy oxide powder material obtained in step b for a second time in a planetary ball mill for 10 hours, and drying to obtain a powder;
[0032] d. The powder obtained in step c is pre-pressed and then isostatically pressed, and the pressure is controlled at 350Mpa and kept for 5 minutes;
[0033] e. Sinter the isostatically pressed block obta...
Embodiment 3
[0036] a. According to Co:Mn:Fe:Ni:Zn=1:1:1:1:1, accurately weigh the five oxides of trimanganese tetraoxide, tricobalt tetraoxide, nickel oxide, ferric oxide and zinc oxide, and put them into the ball mill In the tank, add deionized water and absolute ethanol with a solvent volume ratio of 1:1, place the ball milling tank in a planetary ball mill, and grind for 10 hours to obtain a mixture;
[0037] b. Dry the mixture in step a in an oven at a temperature of 85°C, and then keep it at a constant temperature of 1150°C for 10 hours to melt it into a high-entropy oxide material with a single spinel structure;
[0038] c. Grinding the high-entropy oxide powder material obtained in step b for a second time in a planetary ball mill for 10 hours, and drying to obtain a powder;
[0039] d. The powder obtained in step c is pre-pressed and then isostatically pressed, and the pressure is controlled at 350Mpa and kept for 5 minutes;
[0040] e. Sinter the isostatically pressed block obta...
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Abstract
Description
Claims
Application Information
- IPC
- H01C7/04
- CPC
- H01C7/046
- Inventors
- 王军华; 姚金城