Titanium alloy surface high-temperature-resisting coating and preparation method thereof
A titanium alloy, high temperature resistant technology, applied in metal material coating process, coating and other directions, can solve the problem of low coating hardness and wear resistance, coating thickness, hardness, wear resistance, high temperature oxidation resistance difficult Balanced improvement, limitations and other issues, to achieve the effect of increased coating thickness, excellent high temperature oxidation resistance, and uniform mechanical properties
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[0045] Example 1
[0046] A preparation method for a high temperature resistant coating on a titanium alloy surface, comprising the following steps:
[0047] (1) The original material and ratio of coating are: 65%Al-20%Nb-10%Si-5%B, and the powder is evenly mixed with a ball mill for use.
[0048] (2) Preparation of titanium alloy base material: The Ti-6Al-4V titanium alloy was polished with sandpaper to reveal the metallic luster, and the surface grease was removed with acetone, ultrasonically cleaned in alcohol, and dried for use.
[0049] (3) Pour high-purity argon gas into the bottom of the semi-closed container, so that all the inside of the container is an argon gas atmosphere.
[0050] (4) Presetting the powder in step (1) on the surface of the alloy in step (2) with a preset thickness of 0.8-1.0 mm. A sample of the pre-powder is placed on a fixed step in the container.
[0051] (5) Preheating with laser beam scanning, using CO 2 The gas laser performs the laser all...
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[0052] Example 2
[0053] The same as Example 1, the difference is: the original coating material and the ratio are: 60%Al-20%Nb-10%Si-10%B.
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[0054] Example 3
[0055] The same as Example 1, the difference is: the original coating material and the ratio are: 55%Al-20%Nb-10%Si-15%B.
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