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In-situ preparation of cobalt-base alloy gradient coating on aldary surface through laser induction, and method thereof

A laser-induced, gradient coating technology, applied in the direction of metal material coating process, coating, metal layered products, etc.

Inactive Publication Date: 2009-06-03
XINGKE MEDIUM & SMALL ENTERPRISES SERVICE CENT OF NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, laser-induced in-situ reaction compound preparation technology is a successful way to prepare high-performance wear-resistant coatings on metal-based surfaces. At present, there are few studies in this area.

Method used

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  • In-situ preparation of cobalt-base alloy gradient coating on aldary surface through laser induction, and method thereof
  • In-situ preparation of cobalt-base alloy gradient coating on aldary surface through laser induction, and method thereof
  • In-situ preparation of cobalt-base alloy gradient coating on aldary surface through laser induction, and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Use the sandblasting method to remove the rust layer on the surface of the copper alloy, and use the mixed solution of inorganic acid to remove the oil stain and rust on the surface of the copper alloy; use sandblasting to roughen the surface of the copper alloy, so that the surface of the copper alloy can easily form a firm bond with the coating knot; use acetone solution to clean the surface of the roughened copper alloy until the surface is clean and free of debris; put 70g / l H at room temperature 2 SO 4 Soak in the solution for 20s to carry out surface activation treatment; then wash with acetone solution to remove sulfuric acid and water on the surface of the copper alloy, and then dry the copper alloy with a hair dryer.

[0048] Among them, the mixed solution of inorganic acid is H 2 SO 4 and HCl mixed solution, H in the mixed solution 2 SO 4 The concentration was 200 g / l and the HCl concentration was 120 g / l.

[0049] Mix the nano-Al powder and the Co powder...

Embodiment 2

[0062] Use the sandblasting method to remove the rust layer on the surface of the copper alloy, and use the mixed solution of inorganic acid to remove the oil stain and rust on the surface of the copper alloy; use sandblasting to roughen the surface of the copper alloy, so that the surface of the copper alloy can easily form a firm bond with the coating Knot; use acetone solution to clean the surface of the roughened copper alloy until the surface is clean and free of debris; put 75g / l H at room temperature 2 SO 4 Soak in the solution for 40s to perform surface activation treatment; then wash with acetone solution to remove sulfuric acid and water on the surface of the copper alloy, and then dry the copper alloy with a hair dryer.

[0063] Among them, the mixed solution of inorganic acid is H 2 SO 4 and HCl mixed solution, H in the mixed solution 2 SO 4 The concentration was 250 g / l and the HCl concentration was 110 g / l.

[0064] Mix the nano-Al powder and the Co powder, ...

Embodiment 3

[0075] Use the sandblasting method to remove the rust layer on the surface of the copper alloy, and use the mixed solution of inorganic acid to remove the oil stain and rust on the surface of the copper alloy; use sandblasting to roughen the surface of the copper alloy, so that the surface of the copper alloy can easily form a firm bond with the coating Knot; use alcohol solution to clean the surface of the roughened copper alloy until the surface is clean and free of debris; put 80g / l H at room temperature 2 SO 4 Soak in the solution for 60s to perform surface activation treatment; then wash with acetone solution to remove sulfuric acid and water on the surface of the copper alloy, and then dry the copper alloy with a hair dryer.

[0076] Among them, the mixed solution of inorganic acid is H 2 SO 4 and HCl mixed solution, H in the mixed solution 2 SO 4 The concentration was 300 g / l and the HCl concentration was 100 g / l.

[0077] Mix the nano-Al powder and the Co powder, ...

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Abstract

The invention relates to in-situ preparation of a cobalt-base alloy gradient coating on an aldary surface through laser induction and a method thereof, and belongs to the material technical field. The gradient coating comprises a first coating, a second coating and a third coating, and the thickness of each coating is 0.04 to 0.10mm, 0.03 to 0.08mm and 0.07 to 0.13mm respectively. The preparation method comprises the steps as follows: the aldary surface is processed through activating treatment, Al, Co, C, Ni, Cr, Fe, Si, CrO3, Y2O3, Mo, W, MgO, B2O3 and graphite nodule milling are mixed and are prepared into a mixed materiel for the three coatings respectively; and the mixed materiel for the three coatings is spread on the aldary surface; and the ceramic particle reinforced cobalt-base alloy gradient coating is prepared through laser induction in-situ. The invention adopts the advanced technology for preparing an advanced heatproof wear-resistant gradient coating on the aldary surface, and has good application prospect and important economic significance.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a laser-induced in-situ preparation of a cobalt-based alloy gradient coating on the surface of a copper alloy and a method thereof. Background technique [0002] Copper and copper alloys have good thermal conductivity and corrosion resistance, and are widely used in heat-conducting parts, such as continuous casting crystallizers, casting metal models, etc., and are one of the main consumables in the metallurgical industry. However, due to the poor strength and wear resistance of copper and copper alloys, especially in the high-temperature friction environment of 1500-1600 ° C, their application in engineering is limited. Therefore, the surface of copper alloys needs to be prepared with high-temperature wear-resistant coatings to Improve its service life and reduce the production cost of the enterprise. At present, the technologies for preparing high-temperature wear-resistant ...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B15/20B32B33/00C23C24/10
Inventor 陈岁元刘常升陶兴启刘大亮王建仿
Owner XINGKE MEDIUM & SMALL ENTERPRISES SERVICE CENT OF NORTHEASTERN UNIV
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