CMAS erosion-resistant zirconium-tantalum thermal barrier coating material and preparation method thereof
A technology of thermal barrier coatings and coating materials, applied in the fields of zirconium-tantalum thermal barrier coatings and thermal barrier coatings, can solve the problem of reducing the mechanical properties and phase stability of materials, low thermal conductivity, and reducing the phase stability of coatings And other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0032] refer to figure 1 , a specific method for preparing a zirconium-tantalum thermal barrier coating includes:
[0033] Raw material TaCl 5 Soluble in absolute ethanol, Y(NO 3 ) 3 ·6H 2 O, ZrO(NO 3 ) 2 Soluble in distilled water and / or absolute ethanol, respectively;
[0034] Mix the raw material solutions and add them dropwise to ammonia water to obtain evenly distributed white colloidal precipitates;
[0035] The precipitate was centrifuged, washed with distilled water, and vacuum filtered, followed by the first drying to obtain the precipitated powder;
[0036] The obtained powder is placed in a sintering furnace for the first high-temperature sintering, followed by ball milling, second drying and heating activation to obtain the desired nanoscale coating powder;
[0037] The obtained coating powder is subjected to physical compaction under a static press through a mold, and a crystallized coating mass with uniform composition is obtained after second high-temper...
Embodiment 1
[0053] Weigh 1.79g tantalum pentachloride (TaCl 5 ), 1.92g yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O) and 3.47g zirconyl nitrate (ZrO(NO 3 ) 2 ), that is, the Ta:Y:Zr atomic ratio of the prepared coating sample is 2:2:6;
[0054] TaCl to be weighed 5 Dissolved in absolute ethanol, Y(NO 3 ) 3 ·6H 2 O and ZrO(NO 3 ) 2 Dissolve in distilled water respectively, mix the three solutions and stir for 0.5h with a magnetic stirrer to fully dissolve the solvent;
[0055] The mixed solution was dropped into ammonia water with a pH value of 11 to obtain a white colloidal precipitate;
[0056] The precipitate was centrifuged and washed twice with distilled water, then filtered through a vacuum device consisting of a sand core filter, rubber hose and Erlenmeyer flask, and then dried at 80°C for 48 hours to obtain a precipitated powder;
[0057] Place the precipitated powder in a sintering furnace for high-temperature sintering, the sintering temperature is 1600°C, and the ...
Embodiment 2
[0064] Weigh 1.43g tantalum pentachloride (TaCl 5 ), 1.53g yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O) and 0.46g zirconyl nitrate (ZrO(NO 3 ) 2 ), that is, the Ta:Y:Zr atomic ratio of the prepared coating sample is 4:4:2 respectively;
[0065] Using the preparation method and corrosion parameters described in Example 1, the required coating samples were prepared, and the CMAS corrosion experiment was carried out. The corrosion interface of the YSZ sample and the zirconium-tantalum sample corroded by CMAS was characterized by scanning electron microscopy (the results are as follows Figure 5 As shown), it is found that the YSZ corrosion interface is severely spheroidized, while the corrosion interface of the zirconium-tantalum block has no obvious spheroidization phenomenon, indicating that compared with the traditional YSZ coating, the zirconium-tantalum coating has better stability after corrosion.
PUM
| Property | Measurement | Unit |
|---|---|---|
| Granularity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
