Dendritic crystal corrosive liquid for precipitated reinforced martensitic stainless steel and use method thereof
A martensitic stainless steel, precipitation strengthening technology, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problem of inability to corrode dendritic structure, precipitation strengthening martensitic stainless steel seed dendritic corrosion effect is not good , heating and insulation problems, etc.
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Embodiment 1-1
[0036] This embodiment is used to precipitate and strengthen the dendrite corrosion solution of martensitic stainless steel as cast. The composition and proportion are: 2.5 g of sodium metabisulfite, 5 ml of analytically pure hydrochloric acid, 3 ml of analytically pure nitric acid, and 75 ml of water; the mass fraction of hydrochloric acid is 36 ~38%, the mass fraction of nitric acid is 65~68%.
[0037] The precipitation strengthened martensitic stainless steel in this example is 15-5PH steel.
[0038] This embodiment is used to precipitate and strengthen the method for using the dendrite corrosion solution in the as-cast state of martensitic stainless steel, comprising the following steps:
[0039] (1) Prepare the detection sample of precipitation strengthening martensitic stainless steel as-cast state: carry out coarse grinding, fine grinding, polishing, cleaning (water or alcohol) and drying of the detection sample;
[0040] (2) Preparation of dendrite corrosion solution:...
Embodiment 1-2
[0045] This embodiment is used to precipitate and strengthen the dendritic corrosion solution of martensitic stainless steel as cast. The composition and proportion are: 2.8 g of sodium metabisulfite, 6 ml of analytically pure hydrochloric acid, 4 ml of analytically pure nitric acid, and 75 ml of water; the mass fraction of hydrochloric acid is 36 ~38%, the mass fraction of nitric acid is 65~68%.
[0046] The precipitation strengthened martensitic stainless steel in this example is 15-5PH steel.
[0047] This embodiment is used to precipitate and strengthen the method for using the dendrite corrosion solution in the as-cast state of martensitic stainless steel, comprising the following steps:
[0048](1) Prepare the detection sample of precipitation strengthening martensitic stainless steel as-cast state: carry out coarse grinding, fine grinding, polishing, cleaning (water or alcohol) and drying of the detection sample;
[0049] (2) Preparation of dendrite corrosion solution ...
Embodiment 1-3
[0053] This embodiment is used to precipitate and strengthen the dendritic corrosion solution of martensitic stainless steel as cast. The composition and proportion are: 2.8 g of sodium metabisulfite, 6 ml of analytically pure hydrochloric acid, 4 ml of analytically pure nitric acid, and 75 ml of water; the mass fraction of hydrochloric acid is 36 ~38%, the mass fraction of nitric acid is 65~68%.
[0054] The precipitation strengthened martensitic stainless steel in this example is 15-5PH steel.
[0055] This embodiment is used to precipitate and strengthen the method for using the dendrite corrosion solution in the as-cast state of martensitic stainless steel, comprising the following steps:
[0056] (1) Prepare the detection sample of precipitation strengthening martensitic stainless steel as-cast state: carry out coarse grinding, fine grinding, polishing, cleaning (water or alcohol) and drying of the detection sample;
[0057] (2) Preparation of dendrite corrosion solution...
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