Molybdenum disulfide/aluminum oxide/graphite lubricating antifriction composite coating and preparation method thereof
A technology of molybdenum disulfide and composite coating, which is used in coatings, devices for coating liquid on surfaces, special surfaces, etc., which can solve the problem of not fully satisfying the complex working environment, expanding the scope of application of molybdenum disulfide coatings, and restricting Industrial application and other issues, to achieve excellent solid lubrication performance, improve poor thermal conductivity, and improve product friction and wear performance.
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[0038] Specifically, the present invention provides a kind of preparation method of molybdenum disulfide / aluminum oxide / graphite lubricating antifriction composite coating, the method comprises the following steps:
[0039] Step 1: Grinding, derusting, and degreasing the substrate to obtain a flat, rust-free, and oil-free substrate, and then phosphating the substrate to form a continuous, porous phosphating film on the surface.
[0040] Step 2: Dope a certain quality of alumina and flaky colloidal graphite into the ZBY801 molybdenum disulfide lubricating coating, and stir with a magnetic stirrer to obtain a uniformly mixed composite coating.
[0041] Step 3: preheat the substrate obtained in step 1, and then use the air spraying process to spray the coating prepared in step 2 onto the surface of the preheated substrate to obtain a uniform coating.
[0042] Step 4: Put the composite coating obtained in step 3 into an oven to dry, and then transfer it to a muffle furnace for cur...
Embodiment 1
[0064] Follow the steps below to prepare molybdenum disulfide / alumina / graphite lubricating and antifriction composite coatings:
[0065] (1) Substrate pretreatment
[0066] Take a cut 19*19*8mmHT250 substrate, and polish the substrate with metallographic sandpaper of 400 mesh, 500 mesh, and 600 mesh in sequence. Each metallographic sandpaper is polished about 50 times, and the substrate is rotated 90 degrees each time the sandpaper is replaced. . Measure 48mL of ethanol solution in a 100mL beaker, add 2mL of nitric acid solution into the beaker, disperse ultrasonically at room temperature for 5min to obtain solution A; measure 48mL of ethanol solution in a 100mL beaker, add 2mL of acetone solution into the beaker, Ultrasonic dispersion for 5 minutes to obtain solution B; take 100 mL of deionized water in a 150 mL beaker, add 10 mL of zinc-based phosphating agent solution to the beaker, and ultrasonically disperse at room temperature for 5 minutes to obtain solution C.
[006...
Embodiment 2
[0077] Follow the steps below to prepare molybdenum disulfide / alumina / graphite lubricating and antifriction composite coatings:
[0078] (1) Substrate pretreatment
[0079] Take a cut 19*19*8HT250 substrate, and polish the substrate with metallographic sandpaper of 400 mesh, 500 mesh, and 600 mesh in sequence. Each metallographic sandpaper is polished about 50 times, and the substrate is rotated 90 degrees each time the sandpaper is replaced. . Measure 48mL of ethanol solution in a 100mL beaker, add 2mL of nitric acid solution into the beaker, disperse ultrasonically at room temperature for 5min to obtain solution A; measure 48mL of ethanol solution in a 100mL beaker, add 2mL of acetone solution into the beaker, Ultrasonic dispersion for 5 minutes to obtain solution B; take 100 mL of deionized water in a 150 mL beaker, add 10 mL of zinc-based phosphating agent solution to the beaker, and ultrasonically disperse at room temperature for 5 minutes to obtain solution C.
[0080]...
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