Unlock instant, AI-driven research and patent intelligence for your innovation.

A high-temperature corrosion-resistant and wear-resistant amorphous thermal spraying material

A thermal spraying, amorphous alloy technology, applied in the field of materials, can solve the problems of pulverization, poor wear resistance and high cost

Active Publication Date: 2021-05-11
珠海弘德表面技术有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of traditional high-temperature corrosion-resistant alloy materials is high due to the main components of niobium, molybdenum, titanium, nickel, etc., and the wear resistance is not excellent; imitation enamel coatings generally have unreasonable construction thickness control and heating curve Stress cracking, powdering due to loss of matrix material after long-term use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high-temperature corrosion-resistant and wear-resistant amorphous thermal spraying material
  • A high-temperature corrosion-resistant and wear-resistant amorphous thermal spraying material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An amorphous alloy powder, prepared by conventional methods from the following raw materials in weight percentage: Mo: 22 parts, B: 8 parts, C: 10 parts, Ni: 2 parts, Cr: 32 parts, Si: 2 parts, Fe: 12 parts, Re: 0.03 parts, other impurity elements total ≤ 0.05 parts.

[0025] In this example, the conventional method for preparing amorphous alloy powder is the nitrogen atomization method (cooling rate is 500-1000°C / s).

[0026] The rare earth element Re can increase the elongation and area reduction of the deposited metal, and can significantly improve the sulfide corrosion resistance of the deposited metal. Among them, La, Ce, and Sc can improve the thermoplasticity of molybdenum-chromium-iron alloy. In this embodiment, Re is a combination of La and Ce.

[0027] Impurities in alloy powders are components that cannot be avoided during the preparation process and material selection process, including Mn, S, P, etc.

[0028] In this embodiment, a product comprising a hi...

Embodiment 2

[0030] An amorphous alloy powder, prepared by conventional methods from the following raw materials in weight percentage: Mo: 5 parts, B: 2 parts, C: 0.5 parts, Ni: 0.1 parts, Cr: 5 parts, Si: 0.1 parts, Fe: 0.3 parts, Re: 0.01 parts, other impurity elements total ≤ 0.05 parts. Wherein, Re is a combination of La and Sc.

[0031] In this embodiment, a product comprising a high-temperature, corrosion-resistant and wear-resistant coating is formed by spraying the above-mentioned amorphous alloy powder on the surface of the nickel-based alloy with a plasma spraying device. Among them, the nickel-based alloy is Inconel 625; the coating thickness is 400 μm. The surface bonding strength is 52.1MPa.

Embodiment 3

[0033] An amorphous alloy powder, prepared by conventional methods from the following raw materials in weight percentage: Mo: 30 parts, B: 18 parts, C: 25 parts, Ni: 3 parts, Cr: 50 parts, Si: 5 parts, Fe: 20 parts, Re: 0.05 parts, other impurity elements total ≤0.05 parts. Wherein, Re is Ce.

[0034] In this embodiment, a product comprising a high-temperature, corrosion-resistant and wear-resistant coating is formed by spraying the above-mentioned amorphous alloy powder on the surface of the nickel-based alloy with a laser cladding device. Among them, the nickel-based alloy is Inconel 625; the coating thickness is 700 μm. The surface bonding strength is 55.2MPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-temperature corrosion-resistant and wear-resistant amorphous thermal spraying material, which is mainly composed of molybdenum, chromium and iron with relatively low cost, and the alloy is modified by adding trace rare earth elements. High strength, at least 50MPa, corrosion resistance is better than traditional high-temperature alloy materials, and excellent wear resistance. Compared with other materials, the amorphous thermal spraying material of the invention has low cost, excellent high temperature corrosion resistance and wear resistance, can be used as thermal spraying coating material or wear-resistant surfacing welding material, and is suitable for extensive industrial production.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to an amorphous thermal spraying material resistant to high temperature, corrosion and wear. Background technique [0002] High temperature corrosion and wear are the main causes of material damage. High-temperature corrosion refers to the chemical or electrochemical reaction between metal materials and oxygen, sulfur, carbon, nitrogen and other elements in the ambient atmosphere at high temperatures, resulting in deterioration or destruction of materials. The heating surface of the combustion boiler, especially the water wall, is severely corroded by high temperature, accompanied by high temperature erosion. The high-temperature corrosion on the water wall of the combustion boiler is usually a sulfide-type high-temperature corrosion, which is mainly caused by hydrogen sulfide gas in the flue gas. The highly corrosive acid gas produced in the combustion area reacts with the meta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/129C23C4/134C23C24/10C22C45/00C22C45/10C22C45/02
CPCC22C45/00C22C45/006C22C45/02C22C45/10C23C4/06C23C24/103C23C4/129C23C4/134
Inventor 胡东润
Owner 珠海弘德表面技术有限公司