Method for improving ceramic metallized layer microstructure
A technology of ceramic metallization and microstructure, which is applied in the field of improving the microstructure of ceramic metallization layer, can solve the problems that the molybdenum powder particles are difficult to reach the nanometer level, and the mixing of ceramic metallization powder is uneven, and the reaction process is simple and easy to control , the effect of avoiding environmental pollution
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] 1) take by weighing analytically pure ammonium paramolybdate, add deionized water, be made into the ammonium molybdate solution that concentration is 1.0mol / l;
[0029] 2) adding ammonia water to adjust the pH value to make the pH value 6;
[0030] 3) Add polyvinylpyrrolidone (PVP) and oxalic acid, wherein the mass ratio of ammonium paramolybdate to PVP and oxalic acid is 79:1:20 respectively; after making it completely dissolved, add a certain proportion of glass powder to make Mo: Mn: glass The mass ratio of powder is 70:9:21;
[0031] 4) inject nitric acid and stir to obtain a white gel;
[0032] 5) Put the white gel in an oven and bake it at 100°C for 2 hours to prepare the precursor;
[0033] 6) The precursor was reduced with dry hydrogen in a tube furnace, the hydrogen dew point was -10°C, the reduction time was 1 hour, and the reduction temperature was 700°C;
[0034] 7) Add Mn powder in proportion to the reduced powder for mixing, so that the mass ratio of Mo...
Embodiment 2
[0038] 1) take by weighing analytically pure ammonium paramolybdate, add deionized water, be made into the ammonium molybdate solution that concentration is 2.5mol / l;
[0039] 2) adding ammonia water to adjust the pH value to make the pH value 7;
[0040] 3) Add PVP and oxalic acid in proportion, wherein the mass ratio of ammonium paramolybdate to PVP and oxalic acid is 66: 2: 32 respectively; after making it completely dissolved, add a certain proportion of glass powder to make Mo: Mn: the quality of glass powder The ratio is 85:4.5:10.5;
[0041] 4) Inject hydrochloric acid and stir to obtain a white gel;
[0042] 5) Put the white gel in an oven and bake it at 200°C for 1 hour to prepare the precursor;
[0043] 6) The precursor was reduced with dry hydrogen in a tube furnace, the hydrogen dew point was -30°C, the reduction time was 0.45 hours, and the reduction temperature was 750°C;
[0044] 7) Adding Mn powder in proportion to the reducing powder for mixing, so that the...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More