Hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and preparation method thereof

A technology of ceramic coating and carbon nanotubes, which is applied in the field of cermet coatings, can solve the problem that there is no effective way to improve the strength of carbon nanotubes and coatings, and that carbon nanotubes can not fully utilize the crack resistance and wear resistance of carbon nanotubes to enhance coatings. Features, carbon nanotubes and low coating strength, etc., to achieve the effects of easy promotion and application, low curing temperature, and improved bonding strength

Active Publication Date: 2019-10-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no research on improving the bonding strength of carbon nanotubes and coatings in the patent
Chinese patent (CN201710839455.6) reports the preparation method of carbon nanotube toughened metal-based ceramic coating, but still does not propose an effective way to improve the bonding strength of carbon nanotubes and coating
In summary, although carbon nanotubes have been widely used in wear-resistant and anti-friction coatings, there is still the problem of low bonding strength between carbon nanotubes and coatings, which cannot fully utilize carbon nanotubes to enhance the crack resistance and wear resistance of coatings. sexual characteristics

Method used

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  • Hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and preparation method thereof
  • Hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and preparation method thereof
  • Hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] (1) Add 1 g of carbon nanotubes to 40 ml of mixed acid (HNO 3 :H 2 SO 4 =1:3) in the solution, react at 140° C. in an oil bath for 2 hours, and the obtained product is washed three times with absolute ethanol and deionized water, respectively, and centrifuged to dry to obtain acidified carbon nanotubes; acidified carbon nanotubes such as figure 1 shown.

[0038] (2) 1 g of zinc acetate and 5 ml of deionized water were added to 150 ml of diethylene glycol, and the reaction was carried out in an oil bath at 180° C. for 5 minutes to obtain a zinc oxide sol.

[0039] (3) 1 g of acidified carbon nanotubes were added to 150 g of zinc oxide sol, the oil bath temperature was 180° C., and the magnetic stirring was performed for 2 hours. Hybrid carbon nanotube composites. The resulting complex is figure 2 shown.

[0040] (4) Weigh an appropriate amount of ceramic aggregate, curing agent and adhesive. The content of the ceramic aggregate, curing agent and adhesive is: alum...

Embodiment 2

[0047] (1) Add 1 g of carbon nanotubes to 40 ml of mixed acid (HNO 3 :H 2 SO 4 =1:4) solution, react at 120° C. in an oil bath for 1.5 hours, and the obtained product is washed three times with absolute ethanol and deionized water, respectively, and centrifuged and dried to obtain acidified carbon nanotubes.

[0048] (2) 1 g of zinc acetate and 6 ml of deionized water were added to 160 ml of diethylene glycol, and the reaction was carried out in an oil bath at 200° C. for 3 minutes to obtain a zinc oxide sol.

[0049] (3) 1.5 g of acidified carbon nanotubes were added to 150 g of zinc oxide sol, the temperature of the oil bath was 200° C., and the magnetic stirring was performed for 1.5 hours. A hybrid carbon nanotube composite is obtained. .

[0050] (4) Weigh an appropriate amount of ceramic aggregate, curing agent and adhesive. The content of the ceramic aggregate, curing agent and adhesive is: alumina (35 microns) 55%; zirconia 2%; magnesium oxide 1%; zinc oxide 1%, a...

Embodiment 3

[0057] (1) Add 1 g of carbon nanotubes to 40 ml of mixed acid (HNO 3 :H 2 SO 4 =3:7) solution, react at 150° C. in an oil bath for 2.5 hours, and the obtained product is washed three times with absolute ethanol and deionized water, respectively, and centrifuged and dried to obtain acidified carbon nanotubes.

[0058] (2) 1 g of zinc acetate and 3 ml of deionized water were added to 140 ml of diethylene glycol, and the reaction was carried out in an oil bath at 160° C. for 6 minutes to obtain a zinc oxide sol.

[0059] (3) 0.2 g of acidified carbon nanotubes were added to 150 g of zinc oxide sol, the temperature of the oil bath was 160° C., and the magnetic stirring was performed for 2.5 hours. A hybrid carbon nanotube composite is obtained.

[0060] (4) Weigh an appropriate amount of ceramic aggregate, curing agent and adhesive. The content of the ceramic aggregate, curing agent and adhesive is: alumina (35 microns) 45%; zirconia 6%; magnesium oxide 4%; zinc oxide 4%, alum...

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Abstract

The invention discloses a hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and a preparation method thereof, and belongs to the technical field of cermet coatings. The preparation method includes preparing micron zinc oxide sol according to a sol-gel method, reacting the micron zinc oxide sol with a hybrid carbon nanotube, treated by a mixed-acid oxidation method, togenerate a zinc oxide/carbon nanotube composite, adding the zinc oxide/carbon nanotube composite as a nano additive to an adhesive ceramic coating, and solidifying the adhesive ceramic coating to obtain the wear-resistant anti-friction ceramic coating. Compared with non-hybridized carbon nanotube reinforced ceramic coatings, the hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating has the advantages that the bonding strength to a coating ceramic phase is high, and the friction coefficient and wear rate can be remarkably reduced in a room-temperature or high-temperature environment, so that the ceramic coating can be applied to surfaces of parts bearing collision and abrasion and has a broad application prospect.

Description

technical field [0001] The invention relates to a hybrid carbon nanotube reinforced wear-resistant and friction-reducing ceramic coating and a preparation method, and belongs to the technical field of metal ceramic coatings. Background technique [0002] The rapid development of the industrial level has higher and higher requirements for the performance of metal parts. In the energy industry, aerospace, electric power, metallurgical and chemical industries, mechanical equipment is inevitably damaged by wear and tear, which greatly reduces the service life of the equipment. Equipment reliability is seriously challenged, and maintenance and repair of equipment also brings great cost pressure. Therefore, it is urgent to develop a cost-effective, low-energy consumption, and easy-to-site construction coating technology that is resistant to wear, corrosion and high temperature to ensure long-term stable service of engineering equipment and components. At the same time, this kind ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/61C09D7/62
CPCC09D1/00C09D7/61C09D7/62
Inventor 卞达郭永信刘雅玄赵永武王永光
Owner JIANGNAN UNIV
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