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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

Inactive Publication Date: 2010-08-04
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But if you want to meet the use at higher temperatures, nickel-based alloys are not up to the task

Method used

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  • Ni-Pt-Ru-Al composite coating and method for preparing same
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  • Ni-Pt-Ru-Al composite coating and method for preparing same

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preparation example Construction

[0019] The present invention is a kind of method for preparing Ni-Pt-Ru-Al composite coating by adopting electroplating and embedding infiltration combined process, and this coating preparation method has the following steps:

[0020] The first step: pretreatment of the substrate

[0021] (A) The surface of the Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water abrasive paper to obtain the first sample;

[0022] (B) After the first sample was put into absolute ethanol and ultrasonically cleaned for 5 minutes, the second sample was obtained;

[0023] (C) Putting 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 uses Pt electrode, and the cathode current density is 1.0~1.5A / dm 2 , the degreasing time is 20s~30s;

[0025] (D) Rinse the third sample with deionized water for 1 to 5 ...

Embodiment 1

[0055] The first step: pretreatment of the substrate

[0056] (A) The surface of the Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water abrasive paper to obtain the first sample;

[0057] (B) Put the first sample into absolute ethanol and ultrasonically clean it for 5 minutes to obtain the second sample;

[0058] (C) Putting 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 is a Pt electrode, and the cathode current density is 1.0A / dm 2 , the degreasing time is 20s;

[0060] (D) After the third sample was rinsed with deionized water for 3 times, put into the activation solution and activated for 20 seconds, the fourth sample was obtained;

[0061] The composition of the electrolytic degreasing solution is 50ml / L of Na 2 CO 3 and 5ml / L dish soap;

[0062] The activation solut...

Embodiment 2

[0091] The first step: pretreatment of the substrate

[0092] (A) The surface of the Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo-1.8Hf-1.2Ti substrate was polished with 120# SiC water abrasive paper to obtain the first sample;

[0093] (B) Put the first sample into absolute ethanol and ultrasonically clean it for 5 minutes to obtain the second sample;

[0094] (C) Putting 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) After the third sample was rinsed 5 times with deionized water, put into the activation solution and activated for 30 seconds, the fourth sample was obtained;

[0097] The electrolytic degreasing liquid composition is 30ml / L Na 2 CO 3 and 5ml / L detergent;

[0098] The activation solution consists of ...

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Abstract

The invention discloses a Ni-Pt-Ru-Al composite coating and a method for preparing the same. The Ni-Pt-Ru-Al composite coating comprises a Ni-Al mixed layer and a Ni-Pt-Ru-Al mixed layer from the inside to the outside, wherein the thickness of the Ni-Al mixed layer is 80 to 100 micrometers, and the thickness of the Ni-Pt-Ru-Al mixed layer is 40 to 50 micrometers; and the Ni-Pt-Ru-Al mixed layer comprises NiAL, PtAl2 and RuAl three phases. The method for preparing the Ni-Pt-Ru-Al composite coating by using an electroplating, embedding and alumetizing combined process comprises: firstly, sequentially depositing a Pt layer, a Ru layer and a Pt layer on a substrate by using an electroplating process; and secondly performing alumetizing to manufacture the Ni-Al mixed layer and the Ni-Pt-Ru-Al mixed layer by using embedding and alumetizing processes. The prepared Ni-Pt-Ru-Al composite coating can form a continuous and compact alpha-Al2O3 oxide layer when oxidized at a high temperature of 1,150 DEG C and thus prevent the further oxidization of the coating and the substrate and improve the high temperature oxidization resistance of the substrate.

Description

technical field [0001] The present invention relates to a preparation method of a high-temperature anti-oxidation coating, more particularly, refers to a method of combining electroplating and embedding infiltration on Ni-10Co-9Cr-7.5W-5.4Al-4.1Ta-2.5Mo- Ni-Pt-Ru-Al composite coatings with high temperature (1150℃) oxidation resistance and creep resistance properties were prepared on 1.8Hf-1.2Ti substrate. Background technique [0002] With the high development of aerospace technology, higher requirements are put forward for the performance of the engine. An important indicator of a high-performance engine is to have a high thrust-to-weight ratio. The important means are to increase the gas inlet temperature in front of the turbine or reduce the temperature of the combustion chamber. The goal pursued by researchers in the field of materials. However, existing superalloys and cooling technologies are difficult to meet the design requirements of high thrust-to-weight ratio. ...

Claims

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Application Information

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IPC IPC(8): B32B15/01C25F1/02C25D5/12C25D5/18C25D3/50C25D3/54C23C10/36C23C28/02
Inventor 周春根宋莹雪
Owner BEIHANG UNIV
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