Method for preparing high-temperature wear-resistant alumina-ceramic based composite coating
A technology of alumina ceramics and composite coatings, applied in coatings, metal material coating processes, molten spraying, etc., can solve the problems of easy expansion and cracks, etc., and achieve low preparation costs, simple operation process, The effect of low operator requirements
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[0022] Example 1
[0023] The raw materials and parts by weight used in the method described in this embodiment are: 55 parts by weight of stabilizer, 30 parts by weight of binder, and 15 parts by weight of reinforcing agent, wherein the stabilizer is AT40, the binder is Al, and the reinforcing agent is zirconium dioxide.
[0024] The preparation and use method of the thermal spraying high temperature wear-resistant alumina ceramic-based composite coating in this embodiment uses aluminum alloy as the substrate, and the specific method is:
[0025] (1) The surface of the substrate is roughened by sandblasting, and then the sandblasted surface is cleaned with dry air. The sand material used in the roughening process is zirconium corundum, with a particle size of 15-30μm.
[0026] (2) Weigh 55g AT40, 30g Al, 15g zirconium dioxide, crush the materials by mechanical ball milling, and pass through a 325 mesh mechanical vibrating screen.
[0027] (3) The 55g AT40 and 15g zirconium dioxide powd...
Example Embodiment
[0029] Example 2
[0030] The raw materials and parts by weight used in the method described in this embodiment are: 80 parts by weight of stabilizer, 17 parts by weight of binder, and 3 parts by weight of reinforcing agent, wherein the stabilizer is alumina, the binder is Cu, and the reinforcing agent is YSZ.
[0031] The preparation and use method of the thermal spraying high temperature wear-resistant alumina ceramic-based composite coating in this embodiment uses a copper alloy as the substrate. The specific method is:
[0032] (1) The surface of the substrate is roughened by sandblasting, and then the sandblasted surface is cleaned with dry air. The sand material used in the roughening process is zirconium corundum, with a particle size of 15-30μm.
[0033] (2) Weigh 80g alumina, 3g YSZ, 17g Cu, crush the material by mechanical ball milling, and pass through a 325-mesh mechanical vibrating screen.
[0034] (3) Mix the 80g alumina and 3g YSZ powder prepared in step (2) thoroughly.
...
Example Embodiment
[0036] Example 3
[0037] The raw materials and parts by weight used in the method described in this embodiment are: 70 parts by weight of stabilizer, 20 parts by weight of binder, and 10 parts by weight of reinforcing agent, wherein the stabilizer is AT40, the binder is NiAl, and the reinforcing agent is boron carbide.
[0038] The method for preparing and using the thermal spraying high temperature wear-resistant alumina ceramic-based composite coating in this embodiment uses cast iron as the substrate. The specific method is:
[0039] (1) The surface of the substrate is roughened by sandblasting, and then the sandblasted surface is cleaned with dry air. The sand material used in the roughening process is zirconium corundum, with a particle size of 15-30μm.
[0040] (2) Weigh 70g AT40, 20g NiAl, 10g boron carbide, crush the material by mechanical ball milling, and pass through a 325 mesh mechanical vibrating screen.
[0041] (3) Mix the 70g AT40 and 10g boron carbide powder prepared i...
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