Method for preparing pitcher plant imitated super-lubricative surface by using flame spraying technology
A flame spraying, pitcher plant-like technology, applied in coating, polyether coating, melt spraying and other directions, can solve problems such as limiting the scope of application, and achieve the effects of reliable process, low preparation cost and simple operation
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Embodiment 1
[0039] (1) Substrate surface cleaning: take glass as the substrate, wash it with acetone, alcohol and deionized water in sequence, and dry it with nitrogen gas for later use;
[0040] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 40 seconds, and the number of sand shot used for sandblasting is 200 mesh;
[0041] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% titanium dioxide powder and 1.5% aluminum powder by mass percentage, and the particle diameters of the titanium dioxide powder and the aluminum powder are respectively 25nm and 300nm. A nano-ceramic coating was constructed on the surface of the substrate by means of s...
Embodiment 2
[0046] (1) Substrate surface cleaning: take carbon steel as the substrate, wash it with acetone, alcohol, and deionized water in sequence, and dry it with nitrogen gas for later use;
[0047] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 50 mesh;
[0048] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% nano-alumina powder and 1.5% aluminum powder by mass percentage, and the particle size of alumina and aluminum powder Both are 300nm. The nano-ceramic coating was constructed on the surface of the substrate by means of suspension flame spraying, with a thicknes...
Embodiment 3
[0052] (1) Substrate surface cleaning: take carbon steel as the substrate, wash it with acetone, alcohol, and deionized water in sequence, and dry it with nitrogen gas for later use;
[0053] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 50 mesh;
[0054] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% nano-titanium dioxide powder, 1% aluminum powder and 1% copper powder by mass percentage, and the titanium dioxide particle The particle size of the aluminum powder is 25nm, the particle size of the aluminum powder is 300nm, and the particle size of the copper p...
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