CN116855956A - Titanium oxide film stripping liquid and stripping method - Google Patents
Titanium oxide film stripping liquid and stripping method Download PDFInfo
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- CN116855956A CN116855956A CN202310827993.9A CN202310827993A CN116855956A CN 116855956 A CN116855956 A CN 116855956A CN 202310827993 A CN202310827993 A CN 202310827993A CN 116855956 A CN116855956 A CN 116855956A
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- titanium
- oxide film
- acid
- titanium oxide
- aluminum
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 71
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000010936 titanium Substances 0.000 claims abstract description 61
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 60
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 48
- 230000007797 corrosion Effects 0.000 claims abstract description 36
- 238000005260 corrosion Methods 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- 238000002791 soaking Methods 0.000 claims abstract description 28
- 239000003112 inhibitor Substances 0.000 claims abstract description 26
- 150000007524 organic acids Chemical class 0.000 claims abstract description 13
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 8
- HWTDMFJYBAURQR-UHFFFAOYSA-N 80-82-0 Chemical compound OS(=O)(=O)C1=CC=CC=C1[N+]([O-])=O HWTDMFJYBAURQR-UHFFFAOYSA-N 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- 235000006408 oxalic acid Nutrition 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 7
- 239000012964 benzotriazole Substances 0.000 claims description 7
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 6
- BRRSNXCXLSVPFC-UHFFFAOYSA-N 2,3,4-Trihydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C(O)=C1O BRRSNXCXLSVPFC-UHFFFAOYSA-N 0.000 claims description 6
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 6
- 239000001630 malic acid Substances 0.000 claims description 6
- 235000011090 malic acid Nutrition 0.000 claims description 6
- 235000015165 citric acid Nutrition 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 17
- 230000002378 acidificating effect Effects 0.000 description 15
- 229910001069 Ti alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
- C23G1/106—Other heavy metals refractory metals
Abstract
The invention discloses a titanium oxide film stripping solution, which comprises the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water. The invention also provides a method for removing the titanium oxide film layer, which comprises the following steps: and (3) placing the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution, and soaking for 30-60 min at 50-80 ℃. The stripping solution disclosed by the invention can thoroughly remove the titanium oxide film layer in a soaking mode, and meanwhile, the gloss of titanium and the oxide film thickness of aluminum are not influenced.
Description
Technical Field
The invention relates to the field of material processing, in particular to a titanium oxide film stripping solution and a stripping method.
Background
The titanium-aluminum composite material has unique advantages as a choice for a middle frame of a mobile phone. By combining titanium and aluminum alloy, the respective characteristics can be fully developed. Titanium is used as the 3D surface on the outer side, has the characteristics of corrosion resistance and high strength, and can effectively protect the mobile phone frame from corrosion and external impact. The aluminum alloy is used as an internal structure, and the excellent processing performance of the aluminum alloy enables CNC processing of complex structures to be realized, so that stable support is provided for the mobile phone. However, due to functional and appearance requirements, the outer 3D surface needs to be polished to increase its smoothness and texture. Meanwhile, the aluminum alloy on the inner side needs to be subjected to anodic oxidation treatment to form a firm oxide film, so that the corrosion resistance of the aluminum alloy is improved. However, a blue titanium oxide film is formed on the titanium surface in this process, and the appearance is adversely affected, so that it is required to be removed.
In the prior art, the electrolytic method for removing the titanium oxide film has the problem that uneven current is easy to generate in operation, so that uneven stripping or incomplete stripping is caused. The chemical stripping method can remove the titanium oxide film, but is easy to generate loss and corrosion to the workpiece, and has long time consumption, and the stripping effect cannot meet the process requirement.
Accordingly, those skilled in the art have focused on developing a non-destructive titanium oxide film removal process. The process can accurately remove the titanium oxide film on the titanium surface, and simultaneously ensure that the luster of titanium and the oxide film thickness of aluminum are not affected. The successful application of the technology provides more possibility for the appearance of the titanium-aluminum composite material, so that the titanium-aluminum composite material has wide application prospect in the fields of mobile phones and the like. Through the innovative process, the titanium-aluminum composite material can show better texture and attractive appearance, simultaneously keeps the corrosion resistance and high strength characteristics, and meets the double requirements of people on the appearance and the performance of the mobile phone.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a process for removing a titanium oxide film without damage, which can precisely remove the titanium oxide film on the titanium surface of a titanium-aluminum composite material while ensuring that the luster of titanium and the oxide film thickness of aluminum are not affected.
In order to achieve the purpose, the invention provides a titanium oxide film stripping solution, which comprises the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water.
Preferably, the organic acid is at least one selected from oxalic acid, citric acid and malic acid.
Preferably, the inorganic acid is selected from at least one of sulfuric acid and phosphoric acid.
Preferably, the titanium corrosion inhibitor is selected from at least one of nitric acid and nitrobenzenesulfonic acid.
Preferably, the aluminum corrosion inhibitor is selected from at least one of benzotriazole, methylbenzotriazole and trihydroxybenzoic acid.
The invention also provides a method for removing the titanium oxide film layer, which comprises the following steps: placing the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution, and soaking for 30-60 min at 50-80 ℃;
wherein, the titanium oxide film layer deplating liquid comprises the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water.
Preferably, the organic acid is at least one selected from oxalic acid, citric acid and malic acid.
Preferably, the inorganic acid is selected from at least one of sulfuric acid and phosphoric acid.
Preferably, the titanium corrosion inhibitor is selected from at least one of nitric acid and nitrobenzenesulfonic acid.
Preferably, the aluminum corrosion inhibitor is selected from at least one of benzotriazole, methylbenzotriazole and trihydroxybenzoic acid.
Further, the method comprises the step of cleaning and drying the soaked titanium-aluminum composite material.
The invention has at least the following technical effects:
1. the stripping solution promotes the dissolution of the titanium oxide film layer by adopting the interaction of inorganic acid and organic acid, and reduces the concentration and temperature of strong acid required by stripping the titanium oxide film, thereby weakening the corrosion of the solution to the titanium and aluminum oxide film. Meanwhile, the titanium corrosion inhibitor and the aluminum corrosion inhibitor are added to protect the titanium and aluminum oxide films from being corroded, so that the titanium and aluminum oxide films are not corroded completely, the titanium oxide film on the titanium surface can be removed accurately, and meanwhile, the gloss of the titanium and the oxide film thickness of the aluminum are not influenced.
2. The method can remove the titanium oxide film by soaking in the stripping solution at 50-80 ℃ for 30-60 min under the condition of no power supply, has the advantage of batch stripping, can reduce the labor cost in operation, and simultaneously does not erode titanium materials, affect the glossiness of the titanium surface, erode the aluminum oxide film and the film thickness of the aluminum oxide film.
3. The invention provides a high-efficiency and economic method for removing titanium oxide films, which can meet the requirement of large-scale production, overcomes the problems of loss, corrosion, long treatment time and the like of workpieces in the prior art, can maintain the appearance texture and corrosion resistance of a titanium-aluminum composite material by ensuring the integrity of titanium and aluminum oxide films, and has wide application prospect in the aspect of the appearance of the titanium-aluminum composite material.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
FIG. 1 is a schematic structural view of a titanium aluminum composite;
FIG. 2 is a comparative view of a titanium matrix of a titanium aluminum composite material of a preferred embodiment of the present invention, before (left) and after (right) immersion of the titanium matrix in a stripping solution;
FIG. 3 is a comparative view of the aluminum matrix of a titanium aluminum composite material of a preferred embodiment of the present invention after soaking in a stripping solution (left view);
FIG. 4 is a comparative view of a titanium alloy material before (left) and after (right) immersion of the stripping solution;
fig. 5 is a gold phase diagram of a titanium alloy material under a microscope after soaking in a stripping solution.
Detailed Description
The following description of the preferred embodiments of the present invention refers to the accompanying drawings, which make the technical contents thereof more clear and easy to understand. The present invention may be embodied in many different forms of embodiments and the scope of the present invention is not limited to only the embodiments described herein.
In the drawings, like structural elements are referred to by like reference numerals and components having similar structure or function are referred to by like reference numerals. The dimensions and thickness of each component shown in the drawings are arbitrarily shown, and the present invention is not limited to the dimensions and thickness of each component. The thickness of the components is exaggerated in some places in the drawings for clarity of illustration.
The invention provides a titanium oxide film stripping solution, which comprises the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water.
The stripping solution adopts the interaction of inorganic acid and organic acid, one side is used for promoting the dissolution of the titanium oxide film layer, and the other side is used for reducing the concentration and the temperature of strong acid required by the stripping of the titanium oxide film, thereby weakening the corrosion of the solution to the titanium and aluminum oxide film. In one embodiment, the organic acid is selected from at least one of oxalic acid, citric acid, and malic acid. In one embodiment, the inorganic acid is selected from at least one of sulfuric acid and phosphoric acid.
The titanium corrosion inhibitor and the aluminum corrosion inhibitor are added to protect the titanium and aluminum oxide films from being corroded, so that the titanium and aluminum oxide films are not corroded completely, the titanium oxide film on the titanium surface can be removed accurately, and meanwhile, the gloss of the titanium and the oxide film thickness of the aluminum are not influenced. In one embodiment, the titanium corrosion inhibitor is selected from at least one of nitric acid and nitrobenzenesulfonic acid. In one embodiment, the aluminum corrosion inhibitor is selected from at least one of benzotriazole, methylbenzotriazole and trihydroxybenzoic acid.
The invention also provides a method for removing the titanium oxide film layer, which comprises the following steps: and (3) placing the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in the titanium oxide film layer stripping solution, and soaking for 30-60 min at 50-80 ℃.
As shown in fig. 1, the structure of the titanium-aluminum composite material 1 includes a titanium matrix 11 and an aluminum matrix 12. After the hole sealing treatment, a titanium oxide film is formed on the surface of the titanium substrate 11, and an aluminum oxide film is formed on the surface of the aluminum substrate 12. The method can remove the titanium oxide film only by a soaking mode without electrifying, has the advantage of batch deplating, can reduce the labor cost in operation, and simultaneously does not erode titanium materials, affect the glossiness of the titanium surface, erode the aluminum oxide film and affect the film thickness of the aluminum oxide film.
In one embodiment, the method further comprises the step of washing and drying the immersed titanium aluminum composite material.
Example 1
The titanium oxide film stripping solution comprises 4wt% of oxalic acid, 5wt% of sulfuric acid, 4wt% of nitric acid, 2wt% of benzotriazole and the balance of water.
Respectively soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment and the titanium alloy material subjected to the hole sealing oxidation treatment in a titanium oxide film layer deplating solution at the soaking temperature of 75 ℃ for 30min, then fishing out the titanium-aluminum composite material and the titanium alloy material, and cleaning and wiping.
As shown in fig. 2, the titanium oxide layer on the surface of the titanium substrate of the titanium-aluminum composite material treated by the acidic stripping solution is removed, compared with the titanium substrate of the titanium-aluminum composite material before soaking. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. In addition, as shown in fig. 3, the aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material after the acidic stripping solution is treated is not substantially changed compared with the aluminum matrix of the titanium-aluminum composite material before soaking, so that the acidic stripping solution does not erode the aluminum oxide film and does not affect the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
Fig. 4 and 5 also show a comparative graph of the titanium alloy material before and after the treatment with the acidic stripping solution, and a microscopic gold phase graph of the titanium alloy material after the treatment with the acidic stripping solution, respectively. As can be seen from fig. 4 and fig. 5, the titanium oxide layer on the surface of the titanium alloy material is completely removed, and the metallographic surface of the titanium alloy material is free from corrosion phenomenon under a microscope after the titanium alloy material is subjected to deplating, and the titanium surface is polished after the titanium oxide film is removed, so that the glossiness of the titanium surface is not affected.
Example 2
A titanium oxide film stripping solution is provided, which comprises 5wt% of citric acid, 7wt% of sulfuric acid, 5wt% of nitrobenzenesulfonic acid, 3wt% of benzotriazole and the balance of water.
Soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution at the soaking temperature of 70 ℃ for 40min, and then fishing out, cleaning and wiping the titanium-aluminum composite material.
Compared with the titanium-aluminum composite material before soaking, the titanium oxide layer on the surface of the titanium matrix of the titanium-aluminum composite material treated by the acidic stripping liquid is completely removed. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. The aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material is basically unchanged, and the acidic stripping liquid does not erode the aluminum oxide film and does not influence the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
Example 3
The titanium oxide film stripping solution comprises 4wt% of oxalic acid, 6wt% of sulfuric acid, 5wt% of nitric acid, 3wt% of methylbenzotriazole and the balance of water.
Soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution at the soaking temperature of 70 ℃ for 40min, and then fishing out, cleaning and wiping the titanium-aluminum composite material.
Compared with the titanium-aluminum composite material before soaking, the titanium oxide layer on the surface of the titanium matrix of the titanium-aluminum composite material treated by the acidic stripping liquid is completely removed. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. The aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material is basically unchanged, and the acidic stripping liquid does not erode the aluminum oxide film and does not influence the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
Example 4
The titanium oxide film stripping solution comprises 4wt% of malic acid, 6wt% of phosphoric acid, 4wt% of nitrobenzenesulfonic acid, 2wt% of methylbenzotriazole and the balance of water.
Soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution at the soaking temperature of 80 ℃ for 30min, and then fishing out, cleaning and wiping the titanium-aluminum composite material.
Compared with the titanium-aluminum composite material before soaking, the titanium oxide layer on the surface of the titanium matrix of the titanium-aluminum composite material treated by the acidic stripping liquid is completely removed. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. The aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material is basically unchanged, and the acidic stripping liquid does not erode the aluminum oxide film and does not influence the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
Example 5
A titanium oxide film stripping solution is provided, which comprises 10wt% of citric acid, 10wt% of phosphoric acid, 10wt% of nitrobenzenesulfonic acid, 5wt% of methylbenzotriazole and the balance of water.
Soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution at a soaking temperature of 50 ℃ for 60min, and then fishing out, cleaning and wiping the titanium-aluminum composite material.
Compared with the titanium-aluminum composite material before soaking, the titanium oxide layer on the surface of the titanium matrix of the titanium-aluminum composite material treated by the acidic stripping liquid is completely removed. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. The aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material is basically unchanged, and the acidic stripping liquid does not erode the aluminum oxide film and does not influence the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
Example 6
The titanium oxide film stripping solution comprises 5wt% of oxalic acid, 7wt% of sulfuric acid, 5wt% of nitric acid, 3wt% of trihydroxybenzoic acid and the balance of water.
Soaking the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution at the soaking temperature of 75 ℃ for 30min, and then fishing out, cleaning and wiping the titanium-aluminum composite material.
Compared with the titanium-aluminum composite material before soaking, the titanium oxide layer on the surface of the titanium matrix of the titanium-aluminum composite material treated by the acidic stripping liquid is completely removed. The titanium surface is polished after the titanium oxide film is removed, and the glossiness of the titanium surface is not affected. The aluminum oxide film on the surface of the aluminum matrix of the titanium-aluminum composite material is basically unchanged, and the acidic stripping liquid does not erode the aluminum oxide film and does not influence the film thickness of the aluminum oxide film when the titanium oxide film is stripped.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The titanium oxide film stripping solution is characterized by comprising the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water.
2. The titanium oxide film stripping solution as recited in claim 1, wherein the organic acid is at least one selected from the group consisting of oxalic acid, citric acid and malic acid.
3. The titanium oxide film layer stripping solution as recited in claim 1, wherein the inorganic acid is selected from at least one of sulfuric acid and phosphoric acid.
4. The titanium oxide film stripping solution as recited in claim 1, wherein the titanium corrosion inhibitor is selected from at least one of nitric acid and nitrobenzenesulfonic acid.
5. The titanium oxide film stripping solution as recited in claim 1, wherein the aluminum corrosion inhibitor is selected from at least one of benzotriazole, methylbenzotriazole and trihydroxybenzoic acid.
6. The method for removing the titanium oxide film layer is characterized by comprising the following steps: placing the titanium-aluminum composite material subjected to the hole sealing oxidation treatment in a titanium oxide film layer stripping solution, and soaking for 30-60 min at 50-80 ℃;
wherein, the titanium oxide film layer deplating liquid comprises the following components in percentage by mass: 4 to 10 weight percent of organic acid, 5 to 10 weight percent of inorganic acid, 4 to 10 weight percent of titanium corrosion inhibitor, 2 to 5 weight percent of aluminum corrosion inhibitor and the balance of water.
7. The method of claim 6, wherein the organic acid is selected from at least one of oxalic acid, citric acid, and malic acid.
8. The method of claim 6, wherein the mineral acid is selected from at least one of sulfuric acid and phosphoric acid.
9. The method of claim 6, wherein the titanium corrosion inhibitor is selected from at least one of nitric acid and nitrobenzenesulfonic acid.
10. The method of claim 6, wherein the aluminum corrosion inhibitor is selected from at least one of benzotriazole, methylbenzotriazole, and trihydroxybenzoic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310827993.9A CN116855956A (en) | 2023-07-06 | 2023-07-06 | Titanium oxide film stripping liquid and stripping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310827993.9A CN116855956A (en) | 2023-07-06 | 2023-07-06 | Titanium oxide film stripping liquid and stripping method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116855956A true CN116855956A (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310827993.9A Pending CN116855956A (en) | 2023-07-06 | 2023-07-06 | Titanium oxide film stripping liquid and stripping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116855956A (en) |
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2023
- 2023-07-06 CN CN202310827993.9A patent/CN116855956A/en active Pending
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