Laser cladding preparation method for low-friction-coefficient Fe-base amorphous alloy coating

A technology of amorphous alloy and low friction coefficient, which is applied in the direction of superimposed layer plating, metal material coating process, coating, etc., can solve the problem of high friction coefficient, achieve simple process, wide application prospect, low friction coefficient Effect

Inactive Publication Date: 2015-07-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the traditional laser cladding Fe-based amorphous alloy coating due to the serious crystallization of the friction

Method used

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  • Laser cladding preparation method for low-friction-coefficient Fe-base amorphous alloy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First, prepare 1L electroless Ni-P solution in a 2L beaker, the chemical formula of electroless Ni-P solution is 25g / L NiSO 4 ·6H 2 O, 25g / L NaH 2 PO 2 ·H 2 O, 26g / L Na 3 C 6 h 5 o 7 2H 2 O, 12g / L CH 3 COONa and 2mg / L CN 2 h 4S, the pH of the solution is 5.5; then, place the pretreated steel parts in the solution for constant temperature water bath treatment at 90°C, and the electroless plating time is 2 hours; after the electroless plating, take out the steel parts and rinse them with tap water And blow dry, obtain Ni-P amorphous transition layer on the surface of iron and steel parts, and through X-ray diffraction analysis, gained transition layer is amorphous state, and the mass percent content of P in Ni-P amorphous transition layer is 9.1% . The Fe-based amorphous alloy powder is preset on the surface of the Ni-P amorphous transition layer, and the Fe-based amorphous alloy powder is irradiated with a current of 240A, a pulse width of 2.5ms, a pulse freq...

Embodiment 2

[0033] First, prepare 1L electroless Ni-P solution in a 2L beaker, the chemical formula of electroless Ni-P solution is 25g / L NiSO 4 ·6H 2 O, 25g / L NaH 2 PO 2 ·H 2 O, 26g / LNa 3 C 6 h 5 o 7 2H 2 O, 12g / LCH 3 COONa and 2mg / L CN 2 h 4 S, the pH of the solution is 6; then, place the pretreated steel parts in the solution for constant temperature water bath treatment at 85°C, and the electroless plating time is 2 hours; after the electroless plating, take out the steel parts and rinse them with tap water And blow dry, obtain Ni-P amorphous transition layer on the surface of iron and steel parts, and through X-ray diffraction analysis, gained transition layer is amorphous state, and the mass percent content of P in Ni-P amorphous transition layer is 9.1% . The Fe-based amorphous alloy powder is preset on the surface of the Ni-P amorphous transition layer, and the Fe-based amorphous alloy powder is irradiated with a current of 270A, a pulse width of 2.5ms, a pulse frequen...

Embodiment 3

[0035] First, prepare 1L electroless Ni-P solution in a 2L beaker, the chemical formula of electroless Ni-P solution is 25g / L NiSO 4 ·6H 2 O, 25g / L NaH 2 PO 2 ·H 2 O, 26g / LNa 3 C 6 h 5 o 7 2H 2 O, 12g / LCH 3 COONa and 2mg / L CN 2 h 4 S, the pH of the solution is 5.7; then, place the pretreated steel parts in the solution for constant temperature water bath treatment at 87 ° C, and the electroless plating time is 2 hours; after the electroless plating, take out the steel parts and rinse them with tap water And blow dry, obtain Ni-P amorphous transition layer on the surface of iron and steel parts, and through X-ray diffraction analysis, gained transition layer is amorphous state, and the mass percent content of P in Ni-P amorphous transition layer is 9.1% . The Fe-based amorphous alloy powder is preset on the surface of the Ni-P amorphous transition layer, and the Fe-based amorphous alloy powder is irradiated with a current of 250A, a pulse width of 2.5ms, a pulse fre...

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Abstract

The invention discloses a laser cladding preparation method for a low-friction-coefficient Fe-base amorphous alloy coating and belongs to the technical field of laser cladding. The method includes the steps that step1, an Ni-P amorphous transition layer is prepared on the surface of a steel part; step2, Fe-base amorphous alloy powder is pre-arranged on the surface of the Ni-P amorphous transition layer; step3, laser irradiation is used for melting the Fe-base amorphous alloy powder with which the surface of the part is coated to form a coating; step4, the thickness of the coating is checked, if the thickness of the coating reaches a target thickness, the coating obtained through the step3 is the low-friction-coefficient Fe-base amorphous alloy coating, and if the thickness of the coating does not reach the target thickness, the step2 and the step3 are repeated until the thickness of the coating reaches the target thickness, so that the low-friction-coefficient Fe-base amorphous alloy coating is obtained. The Fe-base amorphous alloy coating prepared through the method has a low friction coefficient, and the method is simple in technology.

Description

technical field [0001] The invention relates to a laser cladding preparation method of an Fe-based amorphous alloy coating with a low friction coefficient, and belongs to the technical field of laser cladding. Background technique [0002] In order to improve the friction and wear properties of steel and other parts, it is necessary to carry out coating treatment on the surface of steel and other parts materials. Related coating preparation technologies include electrodeposition, thermal spraying, physical vapor deposition, laser cladding, etc., among which laser cladding technology is used The most promising prospects. Laser cladding, also known as laser cladding, is a new surface modification technology. It adds cladding materials to the surface of the substrate and uses a high-energy-density laser beam to fuse it together with the thin layer on the surface of the substrate. , forming a metallurgically bonded cladding layer on the surface of the base layer. Laser claddin...

Claims

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Application Information

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IPC IPC(8): C23C24/10C23C28/02C22C45/02
Inventor 陈为为卜丽明马宇亮程焕武王鲁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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