Friction catalysis design method for realizing ultralow friction of carbon film
A technology of ultra-low friction and design method, applied in the direction of nano-carbon, mechanical equipment, engine lubrication, etc., can solve the problems of short wear life, easy oxidation, limited tribological properties of diamond-like carbon films, etc., and achieve improved friction coefficient. , the effect of low cost
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Embodiment 1
[0018] Example 1 A tribocatalytic design method to achieve ultra-low friction of carbon thin films: firstly, disperse 0.125 g 50 nm Cu nanoparticles in 1 L of absolute ethanol, and ultrasonically disperse for 30 min to obtain a Cu nanoparticle solution; then use a 1 mL dropper to 8 drops / 2.5 cm of Cu nanoparticles solutions with different concentrations 2 Spin coating on the surface of an amorphous carbon-based film with a hydrogen content of 20 at.% and a surface roughness of ≤5 nm. After vacuum evaporation of absolute ethanol, a uniformly distributed coating of metal nanoparticles can be obtained.
[0019] The obtained metal nanoparticle coating and aluminum oxide dual balls constitute a friction pair, the lower module is fixed, and the upper module is rotated, and the friction experiment is carried out in UMT under vacuum.
[0020] The Cu metal nanoparticle coating and the dual ball form a friction pair. Through the TEM and Raman analysis of the wear debris, it is found tha...
Embodiment 2
[0021] Example 2 A tribocatalytic design method for realizing ultra-low friction of carbon thin films: firstly, disperse 0.25 g of 100 nm Ni nanoparticles in 1 L of absolute ethanol, and ultrasonically disperse for 30 min to obtain a Ni nanoparticle solution; then use a 1 mL dropper to Ni nanoparticle solutions with different concentrations were placed in 10 drops / 2.5 cm 2 Spin-coat on the surface of a fullerene-like carbon-based film with a hydrogen content of 15 at.% and a surface roughness of ≤5 nm. After evaporating absolute ethanol in a vacuum, a uniformly distributed coating of metal nanoparticles can be obtained.
[0022] The obtained metal nanoparticle coating and aluminum oxide dual balls form a friction pair, the lower module is fixed, the upper module is rotated, and the UMT is in the N 2 The friction experiment was carried out under the atmosphere.
[0023] On the Raman spectrum of the fullerene-like carbon-based film, there is an obvious D peak (1360 cm -1 ) and...
Embodiment 3
[0024] Example 3 A tribocatalytic design method for achieving ultra-low friction of carbon thin films: firstly, disperse 0.025 g of 200 nm Co nanoparticles in 1 L of absolute ethanol, and ultrasonically disperse for 30 min to obtain a Co nanoparticle solution; then use a 1 mL dropper to Ni nanoparticle solutions of different concentrations were placed in 12 drops / 2.5 cm 2 Spin coating on the surface of graphite-like carbon-based film with hydrogen content of 10 at.% and surface roughness ≤ 5 nm. After vacuum evaporation of absolute ethanol, a uniformly distributed coating of metal nanoparticles can be obtained.
[0025] The obtained metal nanoparticle coating and silicon carbide form a friction pair, the lower module is fixed, the upper module is rotated, and the reciprocating friction experiment is carried out on the CSM under the condition of 40% atmospheric humidity.
[0026] The orderly transformation of the thin film structure to graphene can also be observed, forming a b...
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