Ni-Pt-Ru-Al composite coating and method for preparing same
A ni-pt-ru-al, composite coating technology, applied in coatings, chemical instruments and methods, metal material coating processes, etc., can solve the problem of nickel-based alloys being incompetent, and improve high temperature oxidation resistance. Effect
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[0019] The invention is a method for preparing a Ni-Pt-Ru-Al composite coating by adopting a combined process of electroplating and embedding infiltration. The coating preparation method has the following steps:
[0020] The first step: the pretreatment of the substrate
[0021] (A) The surface of Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water matte paper to obtain the first sample;
[0022] (B) After putting the first sample in absolute ethanol for ultrasonic cleaning for 5 minutes, the second sample is obtained;
[0023] (C) Put the second sample into the electrolytic degreasing solution for electrochemical degreasing to obtain the third sample;
[0024] Degreasing process parameters: The second sample is used as the cathode, the anode is Pt electrode, and the cathode current density is 1.0~1.5A / dm 2 , The degreasing time is 20s~30s;
[0025] (D) Wash the third sample with deionized water for 1 to 5 times, and then put it in the activation sol...
Example Embodiment
[0054] Example 1:
[0055] The first step: the pretreatment of the substrate
[0056] (A) The surface of Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water matte paper to obtain the first sample;
[0057] (B) After putting the first sample into absolute ethanol for ultrasonic cleaning for 5 minutes, the second sample is obtained;
[0058] (C) Put the second sample into the electrolytic degreasing solution for electrochemical degreasing to obtain the third sample;
[0059] Degreasing process parameters: the second sample is used as the cathode, the anode uses Pt electrode, and the cathode current density is 1.0A / dm 2 , The oil removal time is 20s;
[0060] (D) Rinse the third sample with deionized water for 3 times, then put it in the activation solution and activate it for 20 seconds to obtain the fourth sample;
[0061] The composition of the electrolytic degreasing solution is 50ml / L Na 2 CO 3 And 5ml / L detergent;
[0062] The activation solution i...
Example Embodiment
[0090] Example 2:
[0091] The first step: the pretreatment of the substrate
[0092] (A) The surface of Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water matte paper to obtain the first sample;
[0093] (B) After putting the first sample into absolute ethanol for ultrasonic cleaning for 5 minutes, the second sample is obtained;
[0094] (C) Put the second sample into the electrolytic degreasing solution for electrochemical degreasing to obtain the third sample;
[0095] Degreasing process parameters: The second sample is used as the cathode, the anode uses Pt electrode, and the cathode current density is 1.5A / dm 2 , The degreasing time is 30s;
[0096] (D) Rinse the third sample with deionized water for 5 times, then put it in the activation solution and activate it for 30 seconds to obtain the fourth sample;
[0097] The composition of the electrolytic degreasing solution is 30ml / L Na 2 CO 3 And 5ml / L detergent;
[0098] The activation solution i...
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