A 316l / mos2 multilayer lubricating film on a metal substrate surface and a method for preparing the same

By constructing a 316L/MoS2 multilayer lubricating film on the surface of lightweight metal components, the problem of increased friction coefficient and local failure of lightweight metal components under complex friction conditions was solved, achieving a synergistic improvement in low friction coefficient and long service life.

CN122428233APending Publication Date: 2026-07-21NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Filing Date
2026-04-14
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Lightweight metal components are prone to increased friction coefficient, adhesive wear, material transfer, interface damage and local failure under complex friction conditions. A single MoS2 film has insufficient load-bearing capacity and it is difficult to meet the requirements of low friction coefficient and long service life.

Method used

A 316L/MoS2 multilayer lubricating film was constructed on the surface of a metal substrate by alternating layers of 316L and MoS2. The 316L layer provides load-bearing support and stress buffer, while the MoS2 layer provides a low-shear lubrication interface. The layer thickness ratio was controlled by magnetron sputtering to form a dense and uniform multilayer structure.

Benefits of technology

It significantly improves the load-bearing capacity and stability of the film, reduces the coefficient of friction and wear rate, extends service life, and is suitable for surface protection under different working conditions.

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Abstract

The application discloses a 316L / MoS2 multilayer lubricating film on a metal substrate surface and a preparation method thereof, and belongs to the technical field of metal surface treatment and functional film preparation. The multilayer lubricating film is composed of 316L layers and MoS2 layers which are alternately stacked along the film thickness direction, the bottom layer in contact with the substrate is a 316L layer, the outermost layer is a MoS2 layer, the number of alternating periods is 5-50, and the single-layer thickness ratio of the 316L layer to the MoS2 layer is 1:1-10. The preparation method adopts a magnetron sputtering process, and sequentially deposits the 316L layer and the MoS2 layer on the metal substrate surface and repeats the alternation. The multilayer structure effectively inhibits the growth of MoS2 columnar crystals, improves the film layer density and the interface bonding strength, significantly improves the bearing capacity and wear resistance while maintaining the MoS2 lubricating performance, and is suitable for lubrication, friction reduction, wear resistance and protection of the surface of metal components.
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