Surface chemical oxidation method of selective laser melting-formed titanium alloy
A technology of selective laser melting and surface chemistry, which is applied to the improvement of process efficiency, metal material coating process, additive manufacturing, etc., can solve the problems that have not been found, and achieve the effect of improving biological activity, reducing harmful effects and high efficiency
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Embodiment 1
[0027] (1) Sample preparation:
[0028] Sample 1: TC4 powder with a particle size of 270 mesh was prepared into a block sample of 10×10×5mm by using selective laser melting technology, and the process parameters were: power 500W, spot diameter 0.1mm, scanning distance 0.06mm, scanning speed 500mm / s, powder spreading thickness 0.1mm;
[0029] Sample 2: Change the scanning speed to 200mm / s, and the others are the same as Sample 1.
[0030] Control sample: TC4 alloy prepared by additive manufacturing (without chemical oxidation).
[0031] (2) Chemical oxidation treatment
[0032] Place samples 1 and 2 of the TC4 alloy formed by selective laser melting in step (1) and ultrasonically clean them in absolute ethanol for 5 minutes, take them out, rinse them with distilled water, put them into the prepared chemical oxidation solution, and place them at 60°C After soaking for 20 minutes, drying in the air for a few seconds, and then rinsing with deionized water for 3 minutes, samples...
Embodiment 2
[0035] Change the composition of the chemical oxidation solution to: NaOH 30g / L, H 2 o 2 6g / L, CaCl 2 3g / L, K 2 HPO 4 ·3H 2 O 3g / L, the solvent is deionized water. Other operations were the same as the preparation of sample 1 and sample 2 in Example 1, and sample 3 and sample 4 of selective laser melting formed titanium alloy with porous structure on the surface were respectively obtained.
Embodiment 3
[0037] Change the composition of the chemical oxidation solution to: NaOH 10g / L, H 2 o 2 15g / L, CaCl 2 3g / L, K 2 HPO 4 ·3H 2 O 3g / L, the solvent is deionized water. Other operations were the same as the preparation of sample 1 and sample 2 in Example 1, and sample 5 and sample 6 of selective laser melting formed titanium alloy with porous structure on the surface were respectively obtained.
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