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High wear-resisting iron-base thermal spraying coating material and preparation method thereof

A coating material, thermal spraying technology, applied in the direction of coating, metal material coating process, melt spraying, etc., can solve the problems of non-uniform deformation of iron-based coatings, limited application, etc., to avoid excessive oxidation and improve densification The effect of moderate sex and pore size

Inactive Publication Date: 2015-08-12
SUZHOU TONGMING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like other coatings, in traditional macroscopic mechanical performance tests, iron-based coatings often undergo non-uniform deformation, and the plastic deformation is concentrated in a small number of shear bands, showing macroscopic brittleness.
This feature of iron-based coatings largely limits its application in the engineering field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment provides a high wear-resistant iron-based thermal spraying coating material, the coating is made of powder made of metal material, the chemical composition of the metal material is: Cr: 10%, C: 0.20%, Si : 0.8%, Mn: 1.5%, Al: 0.62%, Ti: 0.55%, Ni: 0.5%, and the sum of Mn and Ni is 3.2%, Mo and W contain at least one, and the total content is 2%, Lanthanide rare earth: 0.41%, the rest is Fe and unavoidable impurities; the microstructure of the coating is Cr7C3 strengthening phase dispersed in austenite; the mass percentage of the components of the lanthanide rare earth is: cerium: 4%, Terbium: 10%, gadolinium: 15%, praseodymium: 12%, the balance is lanthanum, the sum of the above components is 100%.

[0016] The preparation method of the high wear-resistant iron-based thermal spray coating material provided in this embodiment comprises the following steps:

[0017] (1) The surface of the aluminum alloy substrate is roughened and cleaned by sandblasting; ...

Embodiment 2

[0021] This embodiment provides a high wear-resistant iron-based thermal spraying coating material, the coating is made of powder made of metal material, the chemical composition of the metal material is: Cr: 15%, C: 0.38%, Si : 1.2%, Mn: 2.2%, Al: 0.78%, Ti: 0.67%, Ni: 1.3%, and the sum of Mn and Ni is 3.4%, Mo and W contain at least one, and the total content is 5%. Lanthanide rare earth: 0.53%, the rest is Fe and unavoidable impurities; the microstructure of the coating is Cr7C3 strengthening phase dispersed in austenite; the mass percentage of the components of the lanthanide rare earth is: cerium: 7%, Terbium: 12%, gadolinium: 17%, praseodymium: 14%, the balance is lanthanum, and the sum of the above components is 100%.

[0022] The preparation method of the high wear-resistant iron-based thermal spray coating material provided in this embodiment comprises the following steps:

[0023] (1) The surface of the aluminum alloy substrate is roughened and cleaned by sandblasti...

Embodiment 3

[0027] This embodiment provides a high wear-resistant iron-based thermal spray coating material, the coating is made of powder made of metal material, the chemical composition of the metal material is as follows: Cr: 18%, C: 0.50%, Si : 2.0%, Mn: 3.0%, Al: 0.88%, Ti: 0.87%, Ni: 2.0%, and the sum of Mn and Ni is 3.6%, Mo and W contain at least one, and the total content is 8%. Lanthanide rare earth: 0.63%, the rest is Fe and unavoidable impurities; the microstructure of the coating is Cr7C3 strengthening phase dispersed in austenite; the mass percentage of the components of the lanthanide rare earth is: cerium: 11%, Terbium: 13%, gadolinium: 22%, praseodymium: 15%, the balance is lanthanum, the sum of the above components is 100%.

[0028] The preparation method of the high wear-resistant iron-based thermal spray coating material provided in this embodiment comprises the following steps:

[0029] (1) The surface of the aluminum alloy substrate is roughened and cleaned by sandb...

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Abstract

The present invention discloses a high wear-resisting iron-base thermal spraying coating material, the high wear-resisting iron-base thermal spraying coating powder is made of a metal material, the metal material comprises the following the chemical components by weight: 10-18% of Cr, 0.20-0.50% of C, 0.8-2.0% of Si, 1.5-3.0% of Mn, 0.62-0.88% of Al, 0.55-0.87% of Ti, 0.5-2.0% of Ni, Mn and Ni with the total content of 3.2-3.6%, at least one of Mo and W with the total content of 1-8%, 0.41-0.63% of lanthanum rare earth, and balance of Fe and unavoidable impurities; the coating microstructure is Cr7C3 strengthening phase dispersed austenite, the lanthanum rare earth comprises the following the components by mass: 4-11% of cerium, 10-13% of terbium, 15-22% of gadolinium, 12-15% of praseodymium and balance of lanthanum, the total content of the cerium, terbium, gadolinium, praseodymium and lanthanum is 100%, and the iron-base composite coating powder has good high temperature oxidation resistance, can avoid excessive oxidation in the process of spraying so as to improve the compactness of internal combination of the sprayed coating, the sprayed coating is moderate in pore size and smooth and round in shape, the production of cracks can be effectively reduced, and the tank body oil storage function can be well played.

Description

technical field [0001] The invention relates to a thermal spraying coating material and a preparation method thereof, in particular to a high wear-resistant iron-based thermal spraying coating material and a preparation method thereof, belonging to the technical field of thermal spraying. Background technique [0002] Coatings applied by thermal spraying have long been known for many applications. For example, in vehicle engines, the surface of the oil-lubricated cylinder running-running surface has been coated for a considerable period of time, especially by plasma spraying, which significantly reduces the friction between the piston ring and the cylinder wall. The coefficient of friction, thereby significantly reducing the wear of piston rings and cylinders, makes the service life of the engine longer, the maintenance interval (such as oil change) is extended, and the performance of the engine is also significantly improved. [0003] Compared with other coatings, iron-bas...

Claims

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Application Information

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IPC IPC(8): C23C4/06C23C4/12C22C38/58C22C38/50
Inventor 刘芳黄世宇黄莉
Owner SUZHOU TONGMING MACHINERY
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