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Surface treatment methods for titanium and titanium alloys

Date:2024-03-04 17:15:16       Number of views:

Surface treatment methods for titanium and titanium alloys


[Method 1]


Common solvents for degreasing: trichloroethylene, acetone, butanone, benzene, ethyl acetate, gasoline, anhydrous ethanol.


[Method 2]


After degreasing, immerse in the following solution at 20 ° C for 5-10 minutes:


Sodium fluoride, 2 chromium oxide, 1 sulfuric acid (d=1.84), 10 water, 50


Rinse with water, wash with distilled water, and dry at 93 ° C.


[Method 3]


Treat at 20 ° C for 2 minutes in the following solution:


Hydrofluoric acid (concentrated) 84 hydrochloric acid (37%) 8.9 phosphoric acid (85%) 4.3


Rinse with water, rinse with distilled water, and dry at 93 ° C.


[Method 4]


After degreasing, wash with alkaline aqueous solution, and then treat at room temperature for 4-6 minutes in the following solution:


Nitric acid (70%) 5 ammonium fluoride 3 water 92


After washing with water, treat at room temperature for 2 minutes in the following solution:


Trisodium phosphate 5 sodium fluoride 1 hydrofluoric acid 1.5 water 92.5


Dry after washing with water.


[Method 5]


After degreasing, scrub with the following solution for 2-3 minutes:


Trisodium phosphate 5 sodium fluoride 1.3 hydrofluoric acid 2.9 water 90.8


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