CN106590080A - Salt-spray-resistant paint for stainless steel surface, preparation method and salt-spray-resistant stainless steel product - Google Patents
Salt-spray-resistant paint for stainless steel surface, preparation method and salt-spray-resistant stainless steel product Download PDFInfo
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- CN106590080A CN106590080A CN201611182048.4A CN201611182048A CN106590080A CN 106590080 A CN106590080 A CN 106590080A CN 201611182048 A CN201611182048 A CN 201611182048A CN 106590080 A CN106590080 A CN 106590080A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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Abstract
The invention provides salt-spray-resistant paint for a stainless steel surface. The paint comprises a metallic oxide and an alcohol organic solvent, and the mass ratio of the metallic oxide to the alcohol organic solvent is 1:(1-2.5). The metallic oxide comprises, by weight, 7-8 parts of RuO2, 5-6 parts of IrO2 and 80-83 parts of TiO2. The paint can form a dense oxide coating on the stainless steel surface, and meanwhile, the varieties and contents of the oxides in the oxide coating are defined; the prepared paint is suitable for Austenitic stainless steel which has extremely high requirements for antiseptic properties in the sea atmospheric environment, through the treatment of the stainless steel surface, the high requirements for the antiseptic properties are met, the salt-spray-resistant property is up to 4000 hours, the drawing adhesion force reaches 15.1 Mpa, after ultraviolet light aging is conducted, the time for the gloss retention rate more than or equal to 80% reaches 4000 hours, and the salt-spray-resistant paint is excellent in salt-spray-resistant property.
Description
Technical field
The present invention relates to anti salt spray corrosion technical field, more particularly to a kind of stainless steel watch finishing coat and preparation method thereof.
Background technology
Austenitic stainless steel is because with good mechanics, corrosion-resistant and welding performance, being widely used in space launch, oil
In the steel frameworks such as chemical industry.
The good decay resistance of austenitic stainless steel depends on the passivating film that densification is formed under atmospheric environment, but
It is that, under marine atmosphere, wind carries the air containing chloride suspension granule and is transferred to steel surface, chloride is released by deliquescence
The chloride ion of releasing, easily causes the rupture of stainless steel surfaces passivating film, causes more serious local corrosion.For the boat in coastal waters
My god, the industry high to reliability requirement such as precision manufactureing, stainless resistance to sea atmosphere corrosion performance is particularly important.
In prior art, such as 104371533 A of CN are disclosed and surface is carried out to rustless steel are modified, and specifically disclose use
Substantial amounts of high sense urethane acrylic, fluorine resin, epoxy resin etc., to overcome sea atmosphere corrosion in prior art
Defect, improve resistant anti-corrosion capability, but there is a problem of that organic substance consumption is big, environmental pollution serious, not environmentally.
The content of the invention
In view of this, it is an object of the invention to provide a kind of stainless steel watch finishing coat, it is adaptable in naval air environment,
High austenitic stainless steel is required to antiseptic property；By processing to stainless outer wall, high performance anti-corrosion is reached
Require.
In order to realize foregoing invention purpose, the present invention provides technical scheme below：
The invention provides a kind of coating for stainless steel surfaces resisting salt fog corrosion, including metal-oxide and alcohols have
The mass ratio of machine solvent, the metal-oxide and alcohol organic solvent is 1:(1～2.5), the metal-oxide include with
The component of lower parts by weight：RuO2：7～8 parts, IrO2：5～6 parts, TiO2：80～83 parts.
Preferably, in the coating, the particle diameter of metal-oxide is 10～15nm.
Preferably, the alcohol organic solvent includes the mixture of one or more in isopropanol, ethanol and methanol.
Present invention also offers the preparation method of coating described in above-mentioned technical proposal, comprises the following steps：
By TiO2Presoma, RuO2Presoma, IrO2Presoma is mixed with alcohol organic solvent, mineral acid, obtains coating.
Preferably, the TiO2Presoma includes butyl titanate and/or titanium tetrachloride；The RuO2Presoma includes three
Ruthenic chloride and/or ruthenium hydrochloride ammonium；The IrO2Presoma includes chloro-iridic acid and/or iridic chloride.
Preferably, the RuO2Presoma, IrO2Presoma, TiO2The mass ratio of presoma is 7～8：5～6：80～83.
Preferably, the TiO2Presoma is 1 with the mass ratio of alcohol organic solvent:(1～3)；The TiO2Presoma with
The mass ratio of mineral acid is 1:(0.1～0.5).
Present invention also offers a kind of resisting salt fog corrosion stainless steel product, including stainless steel base, it is coated in described matrix
The intermediate layer on surface, is coated in the dope layer of the intermediate layer outer surface, painting of the dope layer by described in above-mentioned technical proposal
The coating coating that preparation method described in material or above-mentioned technical proposal is obtained is obtained；The intermediate layer is by including chloro-iridic acid, chlorination
The feed liquid coating of stannum and iron chloride is obtained, and the mass ratio of the chloro-iridic acid, stannic chloride and iron chloride is 1：4～6：3～5.
Present invention also offers the preparation method of above-mentioned resisting salt fog corrosion stainless steel product, comprises the following steps：
(1) stainless steel base is immersed in strong alkali solution, then sequentially passes through dehydrated alcohol and water washing, obtain pre- place
The stainless steel base of reason；
(2) after the pretreatment stainless steel base surface-coated intermediate layer raw material, on the stainless steel base surface
Intermediate layer is formed, the intermediate layer raw material includes chloro-iridic acid, stannic chloride and iron chloride and alcohol organic solvent；
(3) in coating or preparation side described in above-mentioned technical proposal described in intermediate layer outer surface coating above-mentioned technical proposal
The coating that method is obtained, forms dope layer in the intermediate layer outer surface, obtains the stainless steel product of resisting salt fog corrosion.
Preferably, the coated weight of the intermediate layer raw material of the step (2) is 2～8g/m2。
Preferably, in the step (3), the coated weight of coating is 3～10g/m2。
The invention provides for the coating of stainless steel surfaces resisting salt fog corrosion, including metal-oxide and alcohols it is organic molten
The mass ratio of agent, the metal-oxide and alcohol organic solvent is 1:(1～2.5), the metal-oxide include following heavy
The component of amount number：RuO2：7～8 parts, IrO2：5～6 parts, TiO2：80～83 parts.The coating that the present invention is provided is to rustless steel
When being coated, the oxide coating of densification can be formed in stainless steel surfaces, also define oxide in oxide coating
Species and content, obtained coating require high austenitic stainless steel to antiseptic property suitable for naval air environment, lead to
Cross and stainless surface is processed, reach high performance requirement for anticorrosion.The result of the embodiment of the present invention shows, obtained painting
Layer performance meets related testing standard, and salt spray resistance is up to 4000h, and drawing adhesive force has reached 15.1Mpa, and ultraviolet light is old
Gloss retention after change>80% time has reached 4000h, with excellent salt spray resistance.
Description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Scanning electron microscope diagrams of the Fig. 1 for coating obtained in the embodiment of the present invention 1.
Specific embodiment
The invention provides a kind of coating for stainless steel surfaces resisting salt fog corrosion, including metal-oxide and alcohols have
The mass ratio of machine solvent, the metal-oxide and alcohol organic solvent is 1:(1～2.5), the metal-oxide include with
The component of lower parts by weight：RuO2：7～8 parts, IrO2：5～6 parts, TiO2：80～83 parts.
The coating that the present invention is provided includes metal-oxide, in the present invention, the particle diameter of metal-oxide in the coating
Preferably 10～15nm, more preferably 10～13nm, foot are preferably 10～12nm.
In the present invention, the metal-oxide includes the component of following parts by weight：RuO2：7～8 parts, IrO2：5～6
Part, TiO2：80～83 parts.
The coating that the present invention is provided includes alcohol organic solvent, and in the present invention, the alcohol organic solvent is preferably included
The mixture of one or more in isopropanol, ethanol and methanol, when the mixture includes two kinds of alcohol organic solvent, more
The preferably mixture of isopropanol and ethanol, the present invention are not limited to the mass ratio of each alcohol organic solvent in the mixture
System, those skilled in the art can select the mixture of the alcohol organic solvent of any mass ratio according to actual needs；In the present invention
In embodiment, preferred isopropanol is organic solvent.
In the present invention, the metal is evenly distributed in alcohol organic solvent with metal alkoxide form, forms metal
Alkoxide organic solution.
Present invention also offers the preparation method of coating described in above-mentioned technical proposal, comprises the following steps：
By TiO2Presoma, RuO2Presoma, IrO2Presoma is mixed with alcohol organic solvent, mineral acid, obtains coating.
In the present invention, the TiO2Presoma includes butyl titanate and/or titanium tetrachloride, as the TiO2Presoma
For butyl titanate and titanium tetrachloride mixture when, the present invention to each TiO in the mixture2The mass ratio of presoma does not have
Limit, those skilled in the art can select the TiO of any mass ratio according to actual needs2The mixture of presoma；In the present invention
In embodiment, the mass ratio of the butyl titanate and titanium tetrachloride is preferably 1:(0.5～2), more preferably 1:(0.8～
1.5), most preferably 1：1.
In the present invention, the RuO2Presoma includes ruthenium trichloride and/or ruthenium hydrochloride ammonium, as the RuO2Presoma is
During the mixture of ruthenium trichloride and ruthenium hydrochloride ammonium, the present invention is to each RuO in the mixture2The mass ratio of presoma is not limited
System, those skilled in the art can select the RuO of any mass ratio according to actual needs2The mixture of presoma；Of the invention real
Apply in example, the mass ratio of the ruthenium trichloride and ruthenium hydrochloride ammonium is preferably 1:(0.5～1.5), more preferably 1:(0.8～1.2),
Most preferably 1:1.1.
In the present invention, the IrO2Presoma includes chloro-iridic acid and/or iridic chloride, as the IrO2Presoma is chlorine
During the mixture of iridium acid and iridic chloride, the present invention is to each IrO in the mixture2The mass ratio of presoma is not limited, this
Art personnel can select the IrO of any mass ratio according to actual needs2The mixture of presoma；In the embodiment of the present invention
In, the mass ratio of the chloro-iridic acid and iridic chloride is preferably 1:(0.5～1.8), more preferably 1:(0.8～1.5).
In the present invention, the mineral acid includes hydrochloric acid and/or nitric acid, the mass concentration of the mineral acid is preferably 10～
20%, more preferably 10～15%, most preferably 13～15%.
In the present invention, the RuO2Presoma, IrO2Presoma, TiO2The mass ratio of presoma is preferably 7～8：5～
6：80～83.
In the present invention, the TiO2Presoma is preferably 1 with the mass ratio of alcohol organic solvent:(1～3), more preferably
For 1:(1.5～2).
In the present invention, the TiO2Presoma is preferably 1 with the mass ratio of mineral acid:(0.1～0.5), more preferably
1:(0.2～0.3).
The present invention does not have any special restriction to the mode of the mixing, using mixing well known to those skilled in the art
Mode；In embodiments of the present invention, it is preferred to use the mode of stirring is mixed, the rotating speed of the stirring is preferably 500
～1000rpm, more preferably 500～800rpm, most preferably 600～800rpm, time of the stirring is preferably 10～
30min, more preferably 15～30min, most preferably 15～20min.
Order by merging of the present invention to the raw material does not have any special restriction, using well known to those skilled in the art
Raw material order by merging；In embodiments of the present invention, preferably first by alcohol organic solvent and RuO2Presoma is mixed to get RuO2
Precursor solution, then by RuO2Precursor solution and IrO2Presoma mixes, and then the inorganic hydrochloric acid of Deca, obtains acid solution, most
Afterwards by TiO2Presoma is mixed into the acid solution.
Present invention also offers a kind of resisting salt fog corrosion stainless steel product, including stainless steel base, it is coated in described matrix
The intermediate layer on surface, is coated in the dope layer of the intermediate layer outer surface, painting of the dope layer by described in above-mentioned technical proposal
The coating coating that preparation method described in material or above-mentioned technical proposal is obtained is obtained；The intermediate layer is by including chloro-iridic acid, chlorination
The feed liquid coating of stannum and iron chloride is obtained, and the mass ratio of the chloro-iridic acid, stannic chloride and iron chloride is preferably 1：4～6：3～5.
The stainless steel product that the present invention is provided includes stainless steel base, and the present invention is to the species of the stainless steel base and comes
Source does not have any special restriction, does not do any antiseptic operation on the sea with stainless using well known to those skilled in the art
Product made from steel.In the present invention, the stainless steel base is preferably 304 and 306 austenitic stainless steels.
Present invention also offers the preparation method of resisting salt fog corrosion stainless steel product described in above-mentioned technical proposal, including it is following
Step：
(1) stainless steel base is immersed in strong alkali solution, then sequentially passes through dehydrated alcohol and water washing, obtain pre- place
The stainless steel base of reason；
(2) after the pretreatment stainless steel base surface-coated intermediate layer raw material, on the stainless steel base surface
Intermediate layer is formed, the intermediate layer raw material includes chloro-iridic acid, stannic chloride and iron chloride and alcohol organic solvent；
(3) in coating or preparation side described in above-mentioned technical proposal described in intermediate layer outer surface coating above-mentioned technical proposal
The coating that method is obtained, forms dope layer in the intermediate layer outer surface, obtains the stainless steel product of resisting salt fog corrosion.
The present invention is immersed in stainless steel base in strong alkali solution, then sequentially passes through dehydrated alcohol and water washing, obtains
The stainless steel base of pretreatment.
In the present invention, the strong alkali solution preferably includes hydroxide solution, more preferably sodium hydroxide solution and/
Or potassium hydroxide solution, the strong alkali solution can remove the greasy dirt on stainless steel base surface.In the present invention, the highly basic
Property solution mass concentration be preferably 30～50%, more preferably 35～45%.
The present invention can cause the combination between stainless steel base and coating more firm by the pretreatment of stainless steel base
Gu, increase coating compactness extent, extend coating life-span.
After obtaining the stainless steel base of pretreatment, the present invention is after the pretreatment in the middle of the surface-coated of stainless steel base
Layer raw material, forms intermediate layer on the stainless steel base surface.
In the present invention, the intermediate layer raw material includes chloro-iridic acid, stannic chloride and iron chloride and alcohol organic solvent.This
In bright, the mass ratio of the chloro-iridic acid, stannic chloride and iron chloride is preferably 1：4～6：3～5.In the present invention, the chloro-iridic acid
1 is preferably with the mass ratio of alcohol organic solvent:(2～6), more preferably 1:(3～5.5), most preferably 1:(4～5).
In the present invention, the mixing of one or more in the preferred isopropanol of the alcohol organic solvent, ethanol and methanol
Thing, when the alcohol organic solvent includes two kinds of mixture, more preferably including isopropanol and the mixture of ethanol, the present invention
The mass ratio of each alcohol organic solvent in the mixture is not limited, those skilled in the art can select according to actual needs
The mixture of the alcohol organic solvent of any mass ratio；In embodiments of the present invention, preferred isopropanol is used as organic solvent.
In the present invention, the order by merging to the intermediate layer raw material does not have special restriction, using people in the art
Order by merging known to member；In embodiments of the present invention, preferably by the chloro-iridic acid, stannic chloride and iron chloride while and alcohol
Class organic solvent mixes, and obtains intermediate layer masking liquid.
After the intermediate layer masking liquid for obtaining, intermediate layer masking liquid is uniformly coated on stainless base steel after the pretreatment by the present invention
The surface of body, then drying formed intermediate layer.In the present invention, the coated weight of the intermediate layer raw material is preferably 2～8g/
m2, more preferably 3～7g/m2, most preferably 4～6g/m2。
The present invention does not have any special restriction to the coating method of the intermediate layer masking liquid, using those skilled in the art
Well known coating method.
In the present invention, the temperature of the drying be preferably 60～80 DEG C, more preferably 70～75 DEG C, the drying when
Between be preferably 40～60min, more preferably 50～55min.
In the present invention, there is no any special restriction to the mode of the drying, known using those skilled in the art
Drying mode；Preferably it is dried by the way of infrared light irradiation in embodiments of the present invention, the infrared lamp
Power is preferably 100～500W, most preferably more preferably 200～450W, 300～450W.
After stainless steel base surface forms intermediate layer, the present invention coats above-mentioned technical proposal in the intermediate layer outer surface
The coating that preparation method described in the coating or above-mentioned technical proposal is obtained, forms dope layer in the intermediate layer outer surface, obtains
To the stainless steel product of resisting salt fog corrosion
In the present invention, the coated weight of the coating is preferably 3～10g/m2, more preferably 4～9g/m2, most preferably 6
～8g/m2。
After the coating, the coating wet film that preferred pair of the present invention is formed is dried and cooling treatment, forms dope layer.
In the present invention, the temperature of the drying is preferably 60～80 DEG C, and more preferably 70～75 DEG C, the time of the drying is preferably 4
～8h, more preferably 5～7h.In the present invention, there is no any special restriction to the mode of the drying, using this area skill
Drying mode known to art personnel；Preferably it is dried using heating blanket or heater strip in embodiments of the present invention.
In the present invention, there is no any special restriction to the mode of the cooling, known using those skilled in the art
The type of cooling；Carry out preferably by the way of natural cooling in embodiments of the present invention.
The invention provides for the coating of stainless steel surfaces resisting salt fog corrosion, including metal-oxide and alcohols it is organic molten
The mass ratio of agent, the metal-oxide and alcohol organic solvent is 1:(1～2.5), the metal-oxide include following heavy
Component RuO of amount number2：7～8 parts, IrO2：5～6 parts, TiO2：80～83 parts, stainless steel surfaces can form the oxide of densification
Coating, it is adaptable in naval air environment, requires high austenitic stainless steel to antiseptic property, by stainless surface
Processed, reached high performance requirement for anticorrosion.
With reference to embodiment to the coating provided by the present invention for stainless steel surfaces resisting salt fog corrosion, preparation method and
The stainless steel product of resisting salt fog corrosion is described in detail, but they can not be interpreted as the limit to the scope of the present invention
It is fixed.
Embodiment 1
304 austenitic stainless steel matrix surfaces are cleaned with the sodium hydroxide solution that mass concentration is 30%, then with anhydrous
Ethanol purge, it is finally clean with a large amount of deionized water rinsings, and be stored in stand-by in dehydrated alcohol.
It is 1 by quality:4:3 chloro-iridic acid, stannic chloride, iron chloride three are configured to intermediate layer in dissolving in 100mL glycerol
Masking liquid, 304 austenitic stainless steel matrix surfaces after the pre-treatment are uniformly coated with intermediate layer masking liquid, the coated weight of intermediate layer masking liquid
For 4.5g/m2, then irradiated at 60 DEG C with the infrared lamp of 600W and be dried 40 minutes, make intermediate layer.
First solution is made with 200mL glycerol dissolving ruthenium trichloride, add chloro-iridic acid and mix with above-mentioned solution, add
100mL glycerol, then Deca hydrochloric acid 8g be mixed into wherein, be eventually adding solution of tetrabutyl titanate, wherein Ru:Ir:The quality of Ti
Ratio is 7:5:80, that is, coating is obtained, on the intermediate layer brushing paint, the coated weight of coating is 6g/m2, after brushing, use electric blanket
7h is heated at 60 DEG C, that is, obtains the stainless steel product of resisting salt fog corrosion.
The surface texture form of coating is characterized by scanning electron microscope, as a result as shown in figure 1, can by Fig. 1
To find out, the coating of one layer of fine and close resisting salt fog corrosion is defined.
304 austenitic stainless steel face coat performances are tested according to different method of testings, test result such as table 1
Shown, as can be seen from Table 1, obtained coating performance meets related testing standard, and salt spray resistance is up to 4000h, drawing
Adhesive force has reached 15.1Mpa, gloss retention after ultraviolet light and aging>80% time has reached 4000h, with excellent resistance to
Salt fog performance.
Embodiment 2
306 austenitic stainless steel matrix surfaces are cleaned with the sodium hydroxide solution that mass concentration is 50%, then with anhydrous
Ethanol purge, it is finally clean with a large amount of deionized water rinsings, and be stored in stand-by in dehydrated alcohol.
It is 1 by quality:5:5 chloro-iridic acid, stannic chloride, iron chloride three are configured to intermediate layer in dissolving in 100mL glycerol
Masking liquid, 306 austenitic stainless steel matrix surfaces after the pre-treatment are uniformly coated with intermediate layer masking liquid, the coated weight of intermediate layer masking liquid
For 5g/m2, then irradiated at 80 DEG C with the infrared lamp of 750W and be dried 60 minutes, make intermediate layer.
First solution is made with 200mL glycerol dissolving ruthenium trichloride, add chloro-iridic acid and mix with above-mentioned solution, add
100mL glycerol, then Deca hydrochloric acid 8g be mixed into wherein, be eventually adding solution of tetrabutyl titanate, wherein Ru:Ir:The quality of Ti
Ratio is 8:6:83, that is, coating is obtained, on the intermediate layer brushing paint, the coated weight of coating is 7.2g/m2, after brushing, use electric heating
Blanket heats 4h at 80 DEG C, that is, obtain the stainless steel product of resisting salt fog corrosion.
306 austenitic stainless steel face coat performances are tested according to different method of testings, test result such as table 1
Shown, as can be seen from Table 1, obtained coating performance meets related testing standard, and salt spray resistance is up to 4000h, drawing
Adhesive force has reached 15.2Mpa, gloss retention after ultraviolet light and aging>80% time has reached 4200h, with excellent resistance to
Salt fog performance.
Embodiment 3
310 austenitic stainless steel matrix surfaces are cleaned with the sodium hydroxide solution that mass concentration is 40%, then with anhydrous
Ethanol purge, it is finally clean with a large amount of deionized water rinsings, and be stored in stand-by in dehydrated alcohol.
It is 1 by quality:6:5 chloro-iridic acid, stannic chloride, iron chloride three are configured to intermediate layer in dissolving in 100mL glycerol
Masking liquid, 310 austenitic stainless steel matrix surfaces after the pre-treatment are uniformly coated with intermediate layer masking liquid, the coated weight of intermediate layer masking liquid
For 7.9g/m2, then irradiated at 70 DEG C with the infrared lamp of 800W and be dried 50 minutes, make intermediate layer.
First solution is made with 200mL glycerol dissolving ruthenium trichloride, add chloro-iridic acid and mix with above-mentioned solution, add
100mL glycerol, then Deca hydrochloric acid 7.8g be mixed into wherein, be eventually adding solution of tetrabutyl titanate, wherein Ru:Ir:The matter of Ti
Amount ratio is 7.9:5.4:82.7, that is, coating is obtained, on the intermediate layer brushing paint, the coated weight of coating is 7.6g/m2, brush
6h is heated at 70 DEG C with electric blanket afterwards, that is, obtains the stainless steel product of resisting salt fog corrosion.
310 austenitic stainless steel face coat performances are tested according to different method of testings, test result such as table 1
Shown, as can be seen from Table 1, obtained coating performance meets related testing standard, and salt spray resistance is up to 4100h, drawing
Adhesive force has reached 15.6Mpa, gloss retention after ultraviolet light and aging>80% time has reached 4300h, with excellent resistance to
Salt fog performance.
The austenitic stainless steel face coat the performance test results that 1 embodiment of the present invention of table is obtained
As can be seen from Table 1, coating obtained in the present invention has excellent salt spray resistance.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of coating for stainless steel surfaces resisting salt fog corrosion, including metal-oxide and alcohol organic solvent, the gold
The mass ratio of category oxide and alcohol organic solvent is 1:(1～2.5), the metal-oxide include the group of following parts by weight
Point：RuO2：7～8 parts, IrO2：5～6 parts, TiO2：80～83 parts.
2. coating according to claim 1, it is characterised in that in the coating particle diameter of metal-oxide be 10～
15nm。
3. coating according to claim 1, it is characterised in that the alcohol organic solvent includes isopropanol, ethanol and first
The mixture of one or more in alcohol.
4. the preparation method of the coating described in claims 1 to 3 any one, comprises the following steps：
By TiO2Presoma, RuO2Presoma, IrO2Presoma is mixed with alcohol organic solvent, mineral acid, obtains coating.
5. preparation method according to claim 4, it is characterised in that the TiO2Presoma include butyl titanate and/or
Titanium tetrachloride；The RuO2Presoma includes ruthenium trichloride and/or ruthenium hydrochloride ammonium；The IrO2Presoma include chloro-iridic acid and/or
Iridic chloride；
The RuO2Presoma, IrO2Presoma, TiO2The mass ratio of presoma is 7～8：5～6：80～83.
6. preparation method according to claim 4, it is characterised in that the TiO2The matter of presoma and alcohol organic solvent
Amount is than being 1:(1～3)；The TiO2Presoma is 1 with the mass ratio of mineral acid:(0.1～0.5).
7. a kind of resisting salt fog corrosion stainless steel product, including stainless steel base, the intermediate layer for being coated in described matrix surface, coating
In the dope layer of the intermediate layer outer surface, coating or right of the dope layer by described in claims 1 to 3 any one will
The coating coating that the preparation method described in 4～6 any one is obtained is asked to obtain；The intermediate layer is by including chloro-iridic acid, stannic chloride
Feed liquid coating with iron chloride is obtained, and the mass ratio of the chloro-iridic acid, stannic chloride and iron chloride is 1：4～6：3～5.
8. the preparation method of resisting salt fog corrosion stainless steel product described in claim 8, comprises the following steps：
(1) stainless steel base is immersed in alkaline solution, then sequentially passes through dehydrated alcohol and water washing, obtain pretreatment not
Rust steel matrix；
(2) after the pretreatment stainless steel base surface-coated intermediate layer raw material, formed on the stainless steel base surface
Intermediate layer, the intermediate layer raw material include chloro-iridic acid, stannic chloride and iron chloride and alcohol organic solvent；
(3) it is any one in coating or claim 4～6 described in intermediate layer outer surface coating claims 1 to 3 any one
The coating that the item preparation method is obtained, forms dope layer in the intermediate layer outer surface, obtains the rustless steel of resisting salt fog corrosion
Product.
9. preparation method according to claim 8, it is characterised in that the coated weight of the intermediate layer raw material of the step (2)
For 2～8g/m2。
10. preparation method according to claim 8, it is characterised in that in the step (3) coated weight of coating be 3～
10g/m2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182048.4A CN106590080B (en) | 2016-12-20 | 2016-12-20 | A kind of stainless steel product for the coating of stainless steel surface resisting salt fog corrosion, preparation method and resisting salt fog corrosion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182048.4A CN106590080B (en) | 2016-12-20 | 2016-12-20 | A kind of stainless steel product for the coating of stainless steel surface resisting salt fog corrosion, preparation method and resisting salt fog corrosion |
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| CN106590080A true CN106590080A (en) | 2017-04-26 |
| CN106590080B CN106590080B (en) | 2019-11-22 |
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Cited By (1)
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