Nickel base self-lubricating coating on surface of titanium alloy by laser cladding and preparation method thereof
A technology of self-lubricating coating and lubricating coating, applied in metal material coating process, coating and other directions, can solve the problem that the proportion and distribution of lubricating phase and reinforcing phase are easily affected by external factors, and the self-lubricating and wear-resistant performance of coating cannot be Fully reflect and prepare nickel-based self-lubricating coatings, etc., to achieve the effect of easy automatic control, ideal engineering application value, and precise control of coating thickness
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[0024] Example 1
[0025] A Nd:YAG laser is used to laser cladding a nickel-based self-lubricating composite coating on the surface of a Ti-6Al-4V titanium alloy plate measuring 50 (length) × 50 (width) × 5 (thickness) mm. The preparation method is as follows:
[0026] 1. Surface activation treatment of titanium alloy plate
[0027] The surface of the titanium alloy plate with a thickness of 5mm is polished and roughened with 120# coarse sandpaper to remove the surface oxide layer and stains, strengthen the combination of the titanium alloy surface and the nickel-based self-lubricating composite cladding layer, and then clean it with alcohol or acetone. Air dry naturally.
[0028] 2. Prepare precursor raw materials for nickel-based composite coating and prefabricate cladding powder layer
[0029] The nickel-based composite coating precursor was prepared according to the following composition (mass percentage): 33.4wt.% nickel-based alloy, 33.3wt.% titanium nitride and 33.3wt.% nickel-c...
Example Embodiment
[0032] Example 2
[0033] A Nd:YAG laser is used to laser cladding a nickel-based self-lubricating composite coating on the surface of a Ti-6Al-4V titanium alloy plate measuring 50 (length) × 50 (width) × 5 (thickness) mm. The preparation method is as follows:
[0034] 1. Surface activation treatment of titanium alloy plate
[0035] The surface of the titanium alloy plate with a thickness of 5mm is polished and roughened with 120# coarse sandpaper to remove the surface oxide layer and stains, strengthen the combination of the titanium alloy surface and the nickel-based self-lubricating composite cladding layer, and then clean it with alcohol or acetone. Air dry naturally.
[0036] 2. Prepare precursor raw materials for nickel-based composite coating and prefabricate cladding powder layer
[0037] The nickel-based composite coating precursor was prepared according to the following composition (mass percentage): 50wt.% nickel-based alloy, 25wt.% titanium nitride and 25wt.% nickel-coated ...
Example Embodiment
[0040] Example 3
[0041] A Nd:YAG laser is used to laser cladding a nickel-based self-lubricating composite coating on the surface of a Ti-6Al-4V titanium alloy plate measuring 50 (length) × 50 (width) × 5 (thickness) mm. The preparation method is as follows:
[0042] 1. Surface activation treatment of titanium alloy plate
[0043] The surface of the titanium alloy plate with a thickness of 5mm is polished and roughened with 120# coarse sandpaper to remove the surface oxide layer and stains, strengthen the combination of the titanium alloy surface and the nickel-based self-lubricating composite cladding layer, and then clean it with alcohol or acetone. Air dry naturally.
[0044] 2. Prepare precursor raw materials for nickel-based composite coating and prefabricate cladding powder layer
[0045] The nickel-based composite coating precursor was prepared according to the following composition (mass percentage): 50wt.% nickel-based alloy, 20wt.% titanium nitride and 30wt.% nickel-coated ...
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