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Preparation method of antifriction and antiwear coating layer under MoDTC lubricating condition

A coating and condition technology, applied in the field of surface engineering and wear-resistant coating materials, can solve the problems of increased friction coefficient, increased wear, and resource loss, achieving low friction coefficient, reduced emissions, and strong practicability Effect

Inactive Publication Date: 2018-01-30
SHANDONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

C.Higdon et al. showed that the MoO formed by the degradation of MoDTC during the friction process 3 It has adverse effects on surface friction and wear, which will lead to increased friction coefficient and increased wear, resulting in a large amount of energy loss and resource loss

Method used

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  • Preparation method of antifriction and antiwear coating layer under MoDTC lubricating condition
  • Preparation method of antifriction and antiwear coating layer under MoDTC lubricating condition
  • Preparation method of antifriction and antiwear coating layer under MoDTC lubricating condition

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Embodiment 1

[0035] 1. Coating preparation method steps

[0036] (1) Substrate cleaning

[0037] Bearing steel is used as the coating base, and the base is treated with descaling water for 6-8 hours, cleaned with deionized water and soaked in anti-rust water for one night. The bearing steel treated with de-scaling and anti-rust water uses acetone and ethanol Sonicate for 5-10min and dry with high-purity nitrogen. Put the substrate rack on the sample tray rack of the vacuum chamber, close the chamber, and vacuum the back to 7.8×10 -4 Pa, and then 45 sccm argon gas was introduced into the system, and the air pressure was maintained at ~2.3 Pa, and a 700V bias voltage was applied to the substrate for backsputter cleaning for 30 minutes.

[0038] (2) Ti-plated intermediate layer

[0039] A Ti intermediate layer was plated on the surface of the substrate by DC magnetron sputtering. A metal Ti target is used, the sputtering atmosphere is Ar, the Ar gas flow is controlled at 30-50 sccm, the s...

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Abstract

The invention provides a preparation method of an antifriction and antiwear coating layer under an MoDTC lubricating condition. An Al-Mg-Ti-B-N coating layer is prepared according to a direct-currentmagnetron sputtering method, and a coating layer with excellent friction performance is obtained by optimizing process parameters; in combination with actual application, by further adding of an antifriction agent MoDTC into engine oil, the friction and wear resistance of the Al-Mg-Ti-B-N coating layer is improved; compared with other nonferrous coating layers (DLC) and bearing steel, the Al-Mg-Ti-B-N coating layer shows excellent wear resistance and high compatibility with the MoDTC, as shown in figures 3, 4 and 5. Reduction of friction and wear can effectively reduce consumption of fuel andloss of energy, thus reducing discharge of waste gas and waste of resources. The steps are simple, the operation is convenient, and the practicability is high.

Description

technical field [0001] The invention belongs to the technical field of surface engineering and wear-resistant coating materials, and in particular relates to the preparation of a friction-reducing and wear-resistant coating. Background technique [0002] Due to the friction and wear of mechanical components, on the one hand, it will lead to a decrease in fuel efficiency and a large amount of waste pollution. On the other hand, due to poor lubrication, the friction coefficient will be too high and the friction loss will increase. Efforts are mainly carried out in two aspects: (1) to develop wear-resistant coatings on the surface of mechanical components (2) to develop engine oil additives with better lubricating properties. Molybdenum dialkyldithiocarbamate (MoDTC) is one of the most widely used organic molybdenum friction modifier additives, which can greatly reduce the friction coefficient after being added to engine oil. Its anti-friction mechanism is to generate MoS with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/58C23C14/35C23C14/16
Inventor 田耘刘鑫姚凯文惠志城
Owner SHANDONG UNIV
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