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Laser protection coating and preparation method thereof

A technology of laser protection and coating, which is applied in the direction of coating, metal material coating process, electrolytic coating, etc., can solve the problems of poor bonding ability between laser protective coating and substrate, large internal stress, easy cracking, etc., and achieve excellent laser Protective ability, low internal stress, effect of increasing density

Active Publication Date: 2020-11-27
CISDI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a laser protective coating and a preparation method thereof, which are used to solve the problem of poor bonding between the existing laser protective coating and the substrate, large internal stress, and easy cracking. , peeling and other issues

Method used

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Examples

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Effect test

preparation example Construction

[0044] The preparation method of laser protective coating of the present invention comprises the steps:

[0045] (1) Clean the substrate.

[0046] (2) Soak the substrate treated in step (1) in a zinc dipping solution to form a zinc dipping layer.

[0047] (3) Use the substrate treated in step (2) as the cathode, and use the sulfur-containing nickel plate as the anode, and immerse the cathode and the anode in Ni / n-Al 2 o 3 In the electroplating solution, electroplating is carried out, so that Ni / n-Al is formed on the surface of the zinc-impregnated layer 2 o 3 Plating.

[0048] (4) In the Ni / n-Al 2 o 3 Spray Ni / n-Al on the surface of electroplating layer 2 o 3 Powder, made into Ni / n-Al 2 o 3 Spray the coating to obtain a laser protective coating.

[0049] Further, in the step (2), making a zinc-dipping layer on the surface of the substrate is divided into two steps: the first step, soaking the substrate treated in step (1) in the first zinc-dipping solution for 10-12...

Embodiment 1

[0061] A kind of laser protection coating, its preparation method comprises the steps:

[0062] (1) Degreasing the surface of the aluminum substrate: soak the aluminum substrate in an alkaline degreasing solution above 65°C (to boiling), take it out after 30s, and clean the remaining degreasing solution on the surface of the aluminum sheet with deionized water . The formula of alkaline degreasing liquid is as follows: sodium carbonate 50g / L, sodium phosphate 50g / L, OP emulsifier 5mL / L.

[0063] (2) Make a galvanizing layer on the surface of the aluminum substrate: soak the aluminum substrate treated in step (1) in the first galvanizing solution for 15s, then take out water to clean the remaining first galvanizing solution on the surface of the aluminum substrate, and make into the first galvanizing layer.

[0064]The second step is to soak the aluminum substrate after the first step in the nitric acid solution for 15s, then take out the water to clean the residual nitric aci...

Embodiment 2

[0075] A kind of laser protection coating, its preparation method comprises the steps:

[0076] (1) Degreasing the surface of the aluminum substrate: soak the aluminum substrate in an alkaline degreasing solution above 65°C (to boiling), take it out after 120s, and clean the residual degreasing solution on the surface of the aluminum sheet with deionized water . The formula of alkaline degreasing liquid is as follows: sodium carbonate 10g / L, sodium phosphate 20g / L, OP emulsifier 1mL / L.

[0077] (2) Make a galvanizing layer on the surface of the aluminum substrate: soak the aluminum substrate treated in step (1) in the first galvanizing solution for 120s, then take out water to clean the remaining first galvanizing solution on the surface of the aluminum substrate, and make into the first galvanizing layer.

[0078] In the second step, soak the aluminum base body treated in the first step in nitric acid solution for 60s, then take out water to clean the residual nitric acid s...

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Abstract

The invention belongs to the technical field of protection coatings, and particularly discloses a laser protection coating and a preparation method thereof. The laser protection coating comprises a zinc dipping layer, a Ni / n-Al 2O3 electroplating layer and a Ni / nAl 2O3 spraying layer which are sequentially stacked from inside to outside. The Ni / n-Al 2O3 electroplating layer comprises nickel and nano aluminum oxide (n-Al 2O 3). The Ni / n-Al 2O3 spraying layer comprises nano aluminum oxide (n-Al 2O3) powder and nickel powder and / or nickel alloy powder. The binding force of the coating and a basebody is high, the internal stress is low, and the problems of cracking, stripping and the like are not likely to happen; and the excellent laser protection capability is achieved, irradiation of 1kW / cm < 2 > laser for 10s and irradiation of 600w / cm < 2 > laser for 100s can be resisted, only the surface of the coating is slightly burnt, only local melting happens under irradiation of 2-5 time aboveenergy laser, and the situations of combustion, breakdown, cracking, stripping and the like are avoided.

Description

technical field [0001] The invention relates to the technical field of protective coatings, in particular to a laser protective coating and a preparation method thereof. Background technique [0002] Since the laser was invented in 1960, it has been used in many fields, such as communication, storage, manufacturing, medical treatment, measurement and so on. Because lasers can carry high energy in a small area, countries around the world have coded lasers with safety levels, and their protection issues have attracted more and more attention. Domestically, the development of lasers has developed rapidly and there are many products, but there is still a lack of development in laser protection, and the protection capabilities are relatively backward. [0003] Coating technology is one of the effective means to solve the problem of laser protection of equipment. At present, spraying technology is commonly used for coating, which has high protection ability. However, the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/02C23C4/06C23C4/134C23C10/20C25D15/00
CPCC23C28/025C23C10/20C23C4/06C23C4/134C23C28/027C25D15/00
Inventor 漆锐余晨韵冯科王水根陈欣
Owner CISDI RES & DEV CO LTD
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