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Amorphous alloy coating with advantages of wear resistance, corrosion resistance and slip resistance, and preparation method thereof

An amorphous alloy and coating technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of not meeting the requirements and shortening the service life of steel, meeting performance requirements, reducing brittleness, coating Layer uniform effect

Inactive Publication Date: 2018-03-13
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the industrial field, steel is widely used as a high-performance and low-cost material, but in harsh and harsh environments, such as corrosive environments, friction and wear environments, the service life of steel is shortened sharply or cannot meet the requirements

Method used

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  • Amorphous alloy coating with advantages of wear resistance, corrosion resistance and slip resistance, and preparation method thereof
  • Amorphous alloy coating with advantages of wear resistance, corrosion resistance and slip resistance, and preparation method thereof
  • Amorphous alloy coating with advantages of wear resistance, corrosion resistance and slip resistance, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Amorphous powders were prepared by ultrasonic gas atomization equipment. The shape of the powder particles is as figure 1 . It can be seen from the figure that the powder is mostly spherical with a small amount of satellite tissue. The fluidity of the powder is 16.8s / 50g, suitable for HVAF supersonic flame spraying. The powder is amorphous with a small amount of amorphous phase.

[0031] The above-mentioned powder (with a particle size of 15 μm to 52 μm) is used as a spraying raw material, and an amorphous alloy coating (the base is ordinary carbon steel) is prepared by using HVAF supersonic flame spraying equipment. First, the substrate is degreased and derusted, and the surface of the substrate is blasted with a spray gun to increase the roughness of the surface. The specific process parameters of HVAF supersonic flame spraying are: air pressure 90psi; gas pressure 75psi; gas flow: 130SLPM; hydrogen flow: 25SLPM; nitrogen flow: 22SLPM; powder feeding rate 6rpm; sp...

Embodiment 2

[0037] Amorphous powders were obtained using ultrasonic gas atomization equipment. The morphology of its powder particles is mostly spherical, and it is an amorphous structure, accompanied by a small amount of amorphous phase. The powder has excellent fluidity (17.5s / g) and is suitable for HVAF supersonic flame spraying.

[0038] Using the above powder (with a particle size of 15 μm to 52 μm) as a raw material, an amorphous alloy coating (substrate 304 stainless steel) was prepared using HVAF supersonic flame spraying equipment. First, the substrate is degreased and derusted, and the surface of the substrate is blasted with a spray gun to increase the roughness of the surface. The specific process parameters of HVAF supersonic flame spraying are: air pressure 95psi; gas pressure 74psi; gas flow: 130SLPM; hydrogen flow: 24SLPM; nitrogen flow: 25SLPM; powder feeding rate 6rpm; spraying distance 190mm.

[0039]The composition (mass percentage) of the coating is: Cr: 15%; Mo: 20...

Embodiment 3

[0042] Amorphous powders were obtained using ultrasonic gas atomization equipment. The morphology of its powder particles is mostly spherical, which is an amorphous structure with a small amount of amorphous phase. The powder has excellent flowability (17.2s / 50g) and is suitable for HVAF supersonic flame spraying.

[0043] Using the above powder (with a particle size of 15 μm to 52 μm) as a raw material, an amorphous alloy coating (substrate 304 stainless steel) was prepared using HVAF supersonic flame spraying equipment. First, the substrate is degreased and derusted, and the surface of the substrate is blasted with a spray gun to increase the roughness of the surface. The specific process parameters of HVAF supersonic flame spraying are: air pressure 93psi; gas pressure 72psi; gas flow: 125SLPM; hydrogen flow: 24SLPM; nitrogen flow: 25SLPM; powder feeding rate 7rpm; spraying distance 200mm.

[0044] The composition (mass percentage) of the coating is: Cr: 18.3%; Mo: 14%; W...

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Abstract

The invention discloses an amorphous alloy coating with advantages of wear resistance, corrosion resistance and slip resistance, and a preparation method thereof, and belongs to the technical field ofamorphous alloy coatings. According to the present invention, the coating is prepared by using a HVAF supersonic flame spraying method, wherein the HVAF supersonic flame spraying uses gas fuels suchas propane, propylene and the like, and uses compressed air as a combustion aid, such that the low-temperature high-speed process is achieved while the use of a large amount of oxygen is avoided; thecoating obtained through the method comprises the following components by mass: 13-25% of Cr, 10-30% of Mo, 0-8% of W, 0-5% of Mn, 1-4% of B, 0-4% of Si, 0-4% of C, 40-65% of Fe, 0-5% of Y, 0-1% of Ca, and less than or equal to 3% of other impurities; and the coating obtained through the method is uniform, and has advantages of low porosity, high hardness, excellent corrosion resistance and excellent slip resistance.

Description

technical field [0001] The invention relates to the technical field of amorphous alloy coatings, in particular to a wear-resistant, corrosion-resistant, and non-slip amorphous alloy coating and a preparation method thereof, which can be used to prepare high wear-resistant, corrosion-resistant, and non-slip coatings in corrosive or non-corrosive environments. Background technique [0002] Compared with conventional polycrystalline metal materials, amorphous alloys (also known as metallic glasses) exhibit structural characteristics of long-range disorder and short-range order, and have many excellent mechanical and physical properties. Amorphous is a very important alloy system in the field of metallic glass. It not only has excellent high-strength properties, but also exhibits outstanding performance in corrosion resistance and wear resistance. In addition, its preparation cost is low, and it has extremely wide application prospects. [0003] HVAF supersonic flame spraying i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06C22C45/02
CPCC23C4/06C22C45/02
Inventor 张海燕孙文海肖治琥岳智君徐红艳张锁德王建强
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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