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Laser cladding preparation method of Fe-based amorphous alloy coating with low friction coefficient

An amorphous alloy, low friction coefficient technology, applied in the plating of superimposed layers, metal material coating process, coating and other directions, can solve the problem of high friction coefficient, achieve simple process, low friction coefficient, wide application prospects Effect

Inactive Publication Date: 2017-04-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 coefficient, the purpose of the present invention is to provide a laser cladding preparation method for a low friction coefficient Fe-based amorphous alloy coating

Method used

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  • Laser cladding preparation method of Fe-based amorphous alloy coating with low friction coefficient

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Experimental program
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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 / LNiSO 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 / LCN 2 H 4 S, the pH of the solution is 5.5; then, the pretreated steel parts are placed in the solution for treatment in a constant temperature water bath at 90°C, and the electroless plating time is 2 hours; after the electroless plating, the steel parts are taken out and rinsed with tap water After drying, the Ni-P amorphous transition layer is obtained on the surface of the steel parts. After X-ray diffraction analysis, the obtained transition layer is amorphous. The mass percentage of P in the 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. The Fe-based amorphous alloy powder is irradiated with a current of 240A, a pulse width of 2.5ms, a pulse frequency of 2Hz, ...

Embodiment 2

[0033] First, prepare 1L electroless Ni-P solution in a 2L beaker. The chemical formula of electroless Ni-P solution is 25g / LNiSO 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, the pretreated steel parts are placed in the solution for a constant temperature water bath at 85°C, and the electroless plating time is 2 hours; after the electroless plating, the steel parts are taken out and rinsed with tap water After drying, the Ni-P amorphous transition layer is obtained on the surface of the steel parts. After X-ray diffraction analysis, the obtained transition layer is amorphous. The mass percentage of P in the 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. The Fe-based amorphous alloy powder is irradiated with a current of 270A, a pulse width of 2.5ms, a pulse frequency of 2Hz, and a laser scan...

Embodiment 3

[0035] First, prepare 1L electroless Ni-P solution in a 2L beaker. The chemical formula of electroless Ni-P solution is 25g / LNiSO 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, the pretreated steel parts are placed in the solution for treatment in a constant temperature water bath of 87°C, and the electroless plating time is 2 hours; after the electroless plating, the steel parts are taken out and rinsed with tap water After drying, the Ni-P amorphous transition layer is obtained on the surface of the steel parts. After X-ray diffraction analysis, the obtained transition layer is amorphous. The mass percentage of P in the 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. The Fe-based amorphous alloy powder is irradiated with a current of 250A, a pulse width of 2.5ms, a pulse frequency of 2Hz, a...

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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 a Fe-based amorphous alloy coating with a low friction coefficient, belonging to the technical field of laser cladding. Background technique [0002] In order to improve the friction and wear performance of steel and other parts, it is necessary to coat the surface of steel and other parts materials. Related coating preparation techniques include electrodeposition, thermal spraying, physical vapor deposition, laser cladding, etc., among which laser cladding technology is applied The prospect is the most promising. Laser cladding, also known as laser cladding, is a new surface modification technology that 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 substrate surface , Form a metallurgical bonding additive cladding layer on the surface of the base layer. Laser cladding technology significantly i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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