Surface treatment process for ultra-low friction film

A DLC film and surface treatment technology, applied in the field of ultra-low friction, can solve the problems of limited element composition, inconvenience of large-scale equipment and complex surfaces, easy segregation of compounds, etc., to achieve the effect of strong surface adaptability and high processing efficiency

Inactive Publication Date: 2010-02-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is a major progress in the research of ultra-low friction, which has greatly changed the extreme sensitivity of the previous DLC film to humidity, and has taken a solid step towards practical application. , it is very inconvenient for large-scale equipment and complex curved surfaces, and the elements and compounds that can be processed must be easy to gasify, and segregation is easy to occur after the composition of the compound is complex, so the elements that can be processed are very limited

Method used

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  • Surface treatment process for ultra-low friction film
  • Surface treatment process for ultra-low friction film
  • Surface treatment process for ultra-low friction film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: First, the sulfur-containing organic compound ethanethiol is dissolved in distilled water as a vulcanizing agent to prepare a vulcanization solution with a concentration of 0.4g / ml, and then add its volume ratio to the vulcanization solution as 2% perfluorosurfactant Sodium perfluorononyloxybenzene sulfonate; secondly, place the DLC film in a vulcanization solution, and electrolyze it for 2-10 hours at a voltage of 500V and a frequency of 50Hz, until the DLC film becomes gray and evenly distributed on the substrate; finally , put the electrolyzed sample in a vacuum chamber at a vacuum degree of 6×10 -2 At Pa, heat up to 350°C for vacuum annealing and then cure.

Embodiment 2

[0014] Embodiment 2: First, the sulfur-containing organic compound dimethyl sulfone is dissolved in distilled water as a vulcanizing agent to prepare a vulcanization solution with a concentration of 0.6g / ml, and then add its volume ratio to the vulcanization solution as 4% perfluorosurfactant agent perfluoroalkyl ethoxy ether alcohol non-ionic fluorine surfactant; secondly, place the DLC film in a vulcanization solution, and electrolyze it for 2-10 hours at a voltage of 300V and a frequency of 30Hz to make the DLC film form on the substrate until the gray is evenly distributed; finally, place the electrolyzed sample in a vacuum chamber at a vacuum degree of 6×10 -2 At Pa, heat up to 320°C for vacuum annealing and then cure.

Embodiment 3

[0015] Example 3: First, the sulfur-containing organic compound dimethyl sulfoxide is dissolved in distilled water as a vulcanizing agent to prepare a vulcanization solution with a concentration of 0.9g / ml, and then a perfluorinated surface with a volume ratio of 1% is added to the vulcanization solution. The active agent perfluorooctanesulfonyl fluoride; secondly, place the DLC film in a vulcanization solution, and electrolyze it for 2-10 hours at a voltage of 100V and a frequency of 70Hz, until the DLC film becomes gray and evenly distributed on the substrate; finally, Place the electrolyzed sample in a vacuum chamber at a vacuum degree of 6×10 -2 At Pa, heat up to 370°C for vacuum annealing and then cure.

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Abstract

The invention discloses an ultralow friction film superficial treatment process of. Firstly, sulfide solution is made by dissolving a sulfur organic compound as a curing agent into distilled water, then, a perfluorinated surface active reagent is added into the sulfide solution; secondly, a DLC film is put in the sulfide solution and electrolyzed for 2 to 10 hours under the voltage of 1 to 500 V and frequency of 1 to 100 Hz until the DLC film shows grey uniform distribution on the base; finally, the sample after electrolysis is put in a vacuum chamber to be annealed and solidified. After treatment, the friction coefficient of the film is 0.006, which is one tenth or one hundredth of that of the DLC film. The superficial treatment process can be used for all the bearing parts required to besmoothed or wear-resistant. The method has the advantage of high treatment efficiency and is suitable for surfaces with various sizes and shapes. The treated surface has high adaptability and can beused for parts which are used under various climates.

Description

technical field [0001] The invention relates to a method for producing ultra-low friction, in particular to a process for surface treatment of DLC film to obtain ultra-low friction. technical background [0002] DLC has been studied for more than 30 years, and people have mastered its superior properties in terms of hardness, wear resistance, optical coating, chemical stability and biocompatibility, especially in the field of tribology, its low friction Coefficient and wear resistance have excellent application prospects in computer hard disk protection, fuel cell high-speed fans, household appliances such as razor coatings, and future micro-nano electromechanical systems. In order to improve the wear resistance and reduce the friction coefficient, some patents add elements such as F and H to the deposition process of DLC, adopt ion-assisted deposition technology, and use a mixed system composed of hexafluorobenzene and hydrogen and pentafluorobenzene and hydrogen Medium fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/27C23C16/56C23C28/04
Inventor 董光能曾群锋张俊锋毛军红谢友柏
Owner XI AN JIAOTONG UNIV
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