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A heat conduction radiation heat dissipation composite coating suitable for titanium alloy

A technology of composite coating and radiation heat dissipation, which is applied in the direction of metal material coating process, coating, superimposed layer plating, etc., can solve the problems of low thermal conductivity, poor infrared radiation heat dissipation performance, etc., to improve thermal conductivity, Reduce the interface thermal resistance, the effect of reducing the interface thermal resistance

Active Publication Date: 2020-09-04
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heat dissipation composite coating combines the mesh metal structure layer with heat conduction function and the non-metal oxide coating with radiation heat dissipation function, and the mesh metal structure layer is used to increase the area of ​​the heat conduction layer, thereby increasing the heat conduction layer and infrared radiation. The contact area of ​​the radiation layer improves the thermal conductivity between the heat conduction layer and the infrared radiation layer, thereby improving the heat conduction efficiency of the titanium alloy and improving the infrared radiation efficiency of the titanium alloy, which solves the problem of low thermal conductivity of the current titanium alloy coating and infrared radiation. Problems with poor radiative cooling performance

Method used

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  • A heat conduction radiation heat dissipation composite coating suitable for titanium alloy
  • A heat conduction radiation heat dissipation composite coating suitable for titanium alloy
  • A heat conduction radiation heat dissipation composite coating suitable for titanium alloy

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Experimental program
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Effect test

Embodiment 1

[0031] The composite coating of the present embodiment is prepared by the following steps:

[0032] Step 1. Copper powder with a particle size of 20 μm to 40 μm is sprayed on the surface of the titanium alloy by cold spraying to form a mesh metal structure layer; the pressure of the cold spraying is 1 MPa, the spraying distance is 20 mm, the spraying gas is nitrogen, and the spraying gas The preheating temperature is 350°C; the shape of the mesh in the mesh metal structure layer is a parallelogram, the acute angle of the parallelogram is 45°, the length of the bottom edge is 10mm, and the height is 10mm. The mesh metal structure layer The thickness is 5mm;

[0033] Step 2, adding the powder of the nano-SiC-spinel-oxide composite material into the water glass solvent, then adding the phenolic resin to obtain a mixed slurry, which is sprayed on the mixed slurry obtained in step 1 by spraying curing method On the mesh metal structure layer, dry and solidify at 120°C to form a no...

Embodiment 2

[0036] The composite coating of the present embodiment is prepared by the following steps:

[0037] Step 1. Spray aluminum powder with a particle size of 20 μm to 40 μm on the surface of the titanium alloy by cold spraying to form a mesh metal structure layer; the pressure of the cold spraying is 2 MPa, the spraying distance is 40 mm, the spraying gas is nitrogen, and the spraying gas The preheating temperature is 220°C; the shape of the mesh in the mesh metal structure layer is a parallelogram, the acute angle of the parallelogram is 90°, the length of the bottom edge is 30mm, and the height is 30mm. The mesh metal structure layer The thickness is 10mm;

[0038] Step 2, adding the powder of the nano-SiC-spinel-oxide composite material into the water glass solvent, then adding the phenolic resin to obtain a mixed slurry, which is sprayed on the mixed slurry obtained in step 1 by spraying curing method On the mesh metal structure layer, dry and solidify at 120°C to form a non-...

Embodiment 3

[0041] The composite coating of the present embodiment is prepared by the following steps:

[0042] Step 1. Spray gold powder with a particle size of 20 μm to 40 μm on the surface of the titanium alloy by cold spraying to form a mesh metal structure layer; the pressure of the cold spraying is 1 MPa, the spraying distance is 20 mm, the spraying gas is nitrogen, and the spraying gas The preheating temperature is 350°C; the shape of the mesh in the mesh metal structure layer is a parallelogram, the acute angle of the parallelogram is 45°, the length of the bottom edge is 10mm, and the height is 10mm. The mesh metal structure layer The thickness is 5mm;

[0043] Step 2, adding the powder of the nano-SiC-spinel-oxide composite material into the water glass solvent, then adding the phenolic resin to obtain a mixed slurry, which is sprayed on the mixed slurry obtained in step 1 by spraying curing method On the mesh metal structure layer, dry and solidify at 120°C to form a non-metal...

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Abstract

The invention discloses a heat conduction radiation heat dissipation composite coating applicable to titanium alloy. The heat conduction radiation heat dissipation composite coating applicable to thetitanium alloy is composed of a net-shaped metal structure layer and a nonmetal oxide coating smeared on the net-shaped metal structure layer. The preparation process of the heat conduction radiationheat dissipation composite coating applicable to the titanium alloy includes the steps: 1, spraying soft metal powder onto the surface of the titanium alloy in a cold mode so as to form the net-shapedmetal structure layer; and 2, after compounding powder of a nano Sic-spinel-oxide composite into mixed slurry, spraying the mixed slurry onto the net-shaped metal structure layer, and obtaining the heat dissipation composite coating on the surface of the titanium alloy through drying and curing. According to the heat conduction radiation heat dissipation composite coating applicable to the titanium alloy, the area of a heat conduction layer is increased by using the net-shaped metal structure layer after the net-shaped metal structure layer having the heat conduction function and the nonmetaloxide coating having the radiation heat dissipation function are composited, then the contact area of the heat conduction layer and an infrared radiation layer is increased, heat conduction performance between the heat conduction layer and the infrared radiation layer is improved, meanwhile heat conduction efficiency of the titanium alloy and infrared radiation efficiency are improved, and the problems that a titanium alloy coating is small in heat conduction rate, and infrared radiation is poor in heat dissipation performance are solved.

Description

technical field [0001] The invention belongs to the technical field of metal composite material preparation, and in particular relates to a heat conduction, radiation and heat dissipation composite coating suitable for titanium alloys. Background technique [0002] A stable working environment is a necessary condition to ensure the high-efficiency and stable output of the laser. The most important thing is that the operating temperature of the core components should not be too high. With the increase of the measurement distance and the improvement of the measurement response rate of the laser rangefinder, the pulse power of the laser is getting larger and larger. If the heat dissipation efficiency of the laser system is not high, it will directly affect the distance measurement performance of the laser rangefinder. For the thermal power consumption generated when the laser is working, it is generally cooled by a hot water storage tank or an air-cooled heat exchange system. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/04C23C26/00C23C28/00
CPCC23C24/04C23C26/00C23C28/321C23C28/34
Inventor 杨理京李争显王少鹏汪欣李欢王培
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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