Method for improving CMAS corrosion resistance of thermal barrier coating
A technology of thermal barrier coating and capacity, applied in the direction of coating, metal material coating process, fusion spraying, etc., can solve problems such as corrosion, and achieve the effect of simple process, small weight gain and high melting point
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Embodiment 1
[0026] (1) Grinding, polishing and sand blasting treatment at the surface of the DD6 nickel-based single crystal sample, and prepared a Nicocral bonding layer using a plasma spray method, and the specific process is, the spray distance is 110mm, the spray voltage is 42V, the spray current 710A, The argon flow rate was 80 l / min, and the powder distribution rate was 60 g / min, which had a thickness of 60 μm. Subsequently, vacuum heat treatment is carried out, and the specific process is, vacuum 10 -3 PA, 900 ° C for 10 h, cooled to room temperature with the furnace, and then surface sandblasting treatment, the specific process is: sand blast operation pressure 0.2 MPa, medium particles diameter 50 μm. Spray GD in a sample surface of the prepared bonding layer 2 Zr 2 O 7 The ceramic layer, the specific process is, the spray distance is 110 mm, the spray voltage 60V, the spray current 850a, the argon flow rate 80 l / min, the powder distribution rate of 80 g / min, the thickness of...
Embodiment 2
[0032] (1) Grinding, polishing and sand blasting treatment at the surface of the DD6 nickel-based single crystal sample, and prepared a Nicocral bonding layer using a plasma spray method, and the specific process is, the spray distance is 110mm, the spray voltage is 42V, the spray current 710A, The argon flow rate was 80 l / min, and the powder distribution rate was 60 g / min, which had a thickness of 60 μm. Subsequently, vacuum heat treatment is carried out, and the specific process is, vacuum 10 -3 PA, 900 ° C for 10 h, cooled to room temperature, followed by a surface sand blast treatment, and the specific process was 0.2 MPa, sand blasting operation pressure 0.2 MPa, and the medium particles were 50 μm. Spray GD in a sample surface of the prepared bonding layer2 Zr 2 O 7 The ceramic layer, the specific process is, the spray distance is 110 mm, the spray voltage 60V, the spray current 850a, the argon flow rate 80 l / min, the powder distribution rate of 80 g / min, the thickne...
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