A kind of method for preparing platinum-aluminum coating
An aluminum coating and coating technology, applied in the direction of coating, metal material coating process, solid-state diffusion coating, etc., can solve the problem that aluminized coating cannot be used for a long time, achieve good combination, improve working life, improve The effect of using temperature
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Embodiment 1
[0047] The method for preparing the platinum-aluminum coating of the present embodiment specifically comprises the following steps:
[0048] (1) Platinum electroplating: Platinum electroplating with a thickness of 6 μm is applied to parts of DD412 single crystal alloy materials that require platinum-aluminum coatings;
[0049] It is required that the electroplating platinum layer has no defects such as peeling, wrinkles and peeling;
[0050] (2) Cleaning: Clean up the oil and other dirt on the surface of the parts;
[0051] In step (2), corundum sand with a particle size of less than or equal to 200 meshes is used at a pressure of 1 × 10 5 Dry sand blowing under the condition of Pa to remove surface dirt.
[0052] (3) Pre-diffusion treatment: put the parts under vacuum pressure ≤ 1.33×10 -1 Pa, heat preservation in a vacuum furnace at a temperature of 1000°C for 2 hours;
[0053] In this step, the role of pre-diffusion is to allow the platinum-coated layer to interdiffuse ...
Embodiment 2
[0067] The method for preparing a platinum-aluminum coating of the present invention specifically comprises the following steps:
[0068] (1) Platinum electroplating: Platinum electroplating with a thickness of 4 μm is applied to the parts of DD412 single crystal alloy material parts that need to be prepared with platinum-aluminum coating;
[0069] It is required that the electroplating platinum layer has no defects such as peeling, wrinkles and peeling;
[0070] (2) Cleaning: Clean up the oil and other dirt on the surface of the parts;
[0071] In step (2), corundum sand with a particle size less than or equal to 200 meshes can be used under a pressure of 1.5×10 5 Dry sand blowing under the condition of Pa to remove surface dirt.
[0072] (3) Pre-diffusion treatment: put the parts under vacuum pressure ≤ 1.33×10 -1 Pa, the temperature is 950 ° C for 2.5 hours;
[0073] In step (3), pre-diffusion treatment is performed in a vacuum furnace.
[0074] In this step, the role ...
Embodiment 3
[0091] The method for preparing a platinum-aluminum coating of the present invention specifically comprises the following steps:
[0092] (1) Platinum electroplating: Platinum electroplating with a thickness of 8 μm is applied to parts of single crystal alloy materials that need to be prepared with a platinum-aluminum coating;
[0093] It is required that the electroplating platinum layer has no defects such as peeling, wrinkles and peeling;
[0094] (2) Cleaning: Clean up the oil and other dirt on the surface of the parts;
[0095] In step (2), corundum sand with particle size less than or equal to 200 meshes can be used, and the pressure is 1×10 5 Dry sand blowing under the condition of Pa to remove surface dirt.
[0096] (3) Pre-diffusion treatment: put the parts under vacuum pressure ≤ 1.33×10 -1 Pa, the temperature is 1050 ℃ and kept for 1.5h;
[0097] In step (3), pre-diffusion treatment is performed in a vacuum furnace.
[0098] In this step, the role of pre-diffus...
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Abstract
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