Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof

A solid self-lubricating, wide temperature range technology, applied in the coating, metal material coating process, fusion spraying, etc., to achieve the effect of small fluctuation range, improve the working environment, and increase the service temperature of the coating

Active Publication Date: 2015-09-23
PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, "a high-performance high-temperature solid self-lubricating coating preparation technology" reported by Chang Xinchun, Chinese Academy of Sciences; CN 102041466 B; Coating preparation technology" CN 104278226 A; but the friction coefficient is still high in a certain temperature range, if the wide temperature range solid self-lubrication technology can be implemented while reducing the sticking and corrosion of abrasive parts, it can be expected to achieve wide temperature range Anti-friction demand

Method used

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  • Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof
  • Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof
  • Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof

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specific Embodiment 1

[0030]The preparation method of the wide temperature range anti-sticking and corrosion self-lubricating coating in this embodiment, the specific steps are as follows:

[0031] Step 1: dispensing of self-lubricating composite powder. Nano Ni powder: 240g, particle size is 0.6μm; WSe 2 Powder: 60g, the powder particle size is 5-15μm; Ag powder: 12g, the powder particle size is 5-20μm; Y powder: 12g, the powder particle size is 5-30μm; CaF 2 ·BaF 2 Eutectic powder: 60g, the powder particle size is 20-80μm; hBN powder: 20g, the powder particle size is 1-3μm.

[0032] Stir and mix the four weighed powders mechanically; weigh 10g of polyvinyl alcohol, put it in a heating pot, add an appropriate amount of water, heat, add the mixed powder into the solution, adjust the electric furnace to continue heating and stir continuously. After the solution is dried, continue to sinter, heat to 500°C and keep for 2 hours until it becomes a block, then break the block, take it out and put it i...

specific Embodiment 2

[0046] The preparation method of the wide temperature range anti-sticking and corrosion self-lubricating coating in this embodiment, the specific steps are as follows:

[0047] Step 1: dispensing of self-lubricating composite powder. Nano-Ni powder: 276g, particle size is 0.6μm; WSe 2 Powder: 60g, the powder particle size is 5-15μm; Ag powder: 12g, the powder particle size is 5-20μm; Y powder: 12g, the powder particle size is 5-30μm; CaF 2 ·BaF 2 Eutectic powder: 40g, the powder particle size is 20-80μm.

[0048] Stir and mix the four weighed powders mechanically; weigh 10g of polyvinyl alcohol, put it in a heating pot, add an appropriate amount of water, heat, add the mixed powder into the solution, adjust the electric furnace to continue heating and stir continuously. After the solution is dried, continue to sinter, heat to 500°C for 2 hours until it becomes a block, then break the block, take it out and put it into a grinding bowl for grinding, and pass through a 100-mes...

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Abstract

The invention discloses a wide temperature region viscosity corrosion resisting solid self-lubricating coating and a preparation method thereof. The coating comprises nano nickel Ni, tungsten selenide WSe2, sliver Ag, yttrium Y, eutectic calcium fluoride fluoride barium CaF2.BaF2 and boron nitride hBN, the raw materials are subjected to mixing with a polyving akohol solution, sintering and breaking and screening, the atmospheric plasma spraying technology is adopted, then the coating is prepared. The solid self-lubricating coating prepared by the method does not contain the chrome Cr element, the working environment of the solid self-lubricating coating is improved, compared with technologies of the same field, the wide temperature region viscosity corrosion resisting solid self-lubricating coating has the advantages that the low friction coefficient is low and stable, the metal melting-drop viscosity corrosion resistance ability is strong, the fluctuation range in the wide temperature region range is smaller, the coating can be used at the temperature ranging from 25 DEG C to 800 DEG C, the service temperature of the coating is improved, and the important engineering application value is achieved.

Description

technical field [0001] The invention belongs to the field of solid lubrication, and in particular relates to a wide temperature range anti-sticking and corrosion solid self-lubricating coating and a preparation method thereof. Background technique [0002] With the advancement and development of science and technology, the friction pair is facing harsh working conditions such as high temperature, high speed, and heavy load. Liquid lubrication technology cannot be used on the bracket bearings. For example, some equipment-specific slide rails take on the guiding role. The high temperature resistant lubricating film is almost completely destroyed, and the working environment of the slide rail is harsh. Therefore, the key actuating structure of the equipment is faced with complex tests such as high temperature, heavy load, and oxidation, and it is difficult to self-clean the friction pairs facing sticking and corrosion, which reduces the service life of the equipment. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/12C22C19/03C22C32/00
Inventor 袁晓静陈小虎禹志航
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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