A kind of anti-laser ablation coating for substrate surface and preparation method
A substrate surface, anti-laser technology, applied in metal material coating process, coating, superimposed layer plating and other directions, can solve the problems of reduced aircraft structural strength, increased temperature of stressed components, and decreased compressive strength, etc. Achieve good application prospects, controllable thickness, and low porosity
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[0042] The preparation method of the anti-laser ablation coating for the surface of the substrate of embodiment 1-2, the steps of the method include:
[0043] (1) Degreasing and sandblasting: dip and wash with organic solvent, and dry naturally. Before spraying, the surface of the substrate is sandblasted to remove the surface oxide layer and increase the roughness of the substrate surface;
[0044] (2) Supersonic plasma spraying molybdenum layer on the surface of the substrate; the process parameters of supersonic plasma spraying are: the main gas is the inert gas Ar, the secondary gas is the reducing gas hydrogen, the current is 370-390A, and the voltage is 100-120V , the main air flow is 120~140L / min, the powder feeding and spraying distance is 90~110mm, and the powder feeding rate is 20~40g / min;
[0045] (3) Supersonic plasma spraying the zirconia layer on the molybdenum layer; the process parameters of the supersonic plasma spraying are: the main gas is the inert gas Ar, ...
Embodiment 1
[0049] The anti-laser ablation coating for the aluminum alloy surface of Example 1, the base material is an aluminum alloy substrate 1, the heat insulating layer includes a molybdenum layer 2 and a zirconia layer 3, the transition layer is a zirconia aluminum layer 4, and the reflective layer is Aluminum graphene layer 5, its specific structure can refer to figure 1 .
[0050] The preparation method of embodiment 1 is as follows:
[0051] (1) Degreasing and sandblasting: dip and wash with organic solvent, and dry naturally. Before spraying, the surface of the substrate is sandblasted to remove the surface oxide layer and increase the roughness of the substrate surface;
[0052] (2) Supersonic plasma spraying molybdenum layer on the surface of the substrate; the process parameters of supersonic plasma spraying are: the main gas is the inert gas Ar, the secondary gas is the reducing gas hydrogen, the current is 380A, the voltage is 110V, and the main gas flow rate is 380A. 130...
Embodiment 2
[0058] The anti-laser ablation coating for the aluminum alloy surface of Example 2, the base material is an aluminum alloy, the heat insulating layer is a molybdenum zirconia layer, the transition layer is a zirconia aluminum layer, and the reflective layer is an aluminum graphene layer, and its preparation The method is as follows:
[0059] (1) Degreasing and sandblasting: dip and wash with organic solvent, and dry naturally. Before spraying, the surface of the substrate is sandblasted to remove the surface oxide layer and increase the roughness of the substrate surface;
[0060] (2) Supersonic plasma spraying molybdenum layer on the surface of the substrate; the process parameters of supersonic plasma spraying are: the main gas is the inert gas Ar, the secondary gas is the reducing gas hydrogen, the current is 380A, the voltage is 110V, and the main gas flow rate is 380A. 130L / min, the powder feeding distance is 100mm, and the powder feeding rate is 30g / min;
[0061] (3) Su...
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