CN108034932A - A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating - Google Patents
A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating Download PDFInfo
- Publication number
- CN108034932A CN108034932A CN201711319974.6A CN201711319974A CN108034932A CN 108034932 A CN108034932 A CN 108034932A CN 201711319974 A CN201711319974 A CN 201711319974A CN 108034932 A CN108034932 A CN 108034932A
- Authority
- CN
- China
- Prior art keywords
- plated
- workpiece
- zinc
- chemical nickel
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
- C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemically Coating (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating, it is desirable to provide a kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating.It comprises the following steps：Step（1）, Solvent degreasing；Step（2）, electrochemical deoiling；Step（3）, alkaline etching；Step（4）, light extraction；Step（5）, once soak zinc；Step（6）Move back zinc；Step（7）Secondary soaking zinc；Step（8）Deionization is washed and deionization hot water wash；And step（9）, chemical nickel phosphorus plating.The present invention is suitable for the processing of 7A19 aluminum alloy material surface chemical nickel phosphorus platings, it is combined between coating and matrix after handling, and power is strong, and the bright plating of coating is high, coating crystallization more even compact.
Description
Technical field
The present invention relates to technical field of aluminum alloy surface treatment, more particularly, to a kind of 7A19 aluminum alloy material surfaces chemistry
The process of nickel-plated phosphor.
Background technology
Traditional aluminium and Electroless Nickel Plating of Aluminum Alloy phosphorus technique is：Oil removing, washing, nitric acid acid etching, once washing, leaching zinc, water
Wash, move back zinc, washing, secondary soaking zinc, washing, chemical nickel phosphorus plating.Since the chemical nickel phosphorus plating of aluminium alloy is self-catalyzed reaction, tank liquor
It is stronger to the sensitiveness of extraneous foreign ion especially metal impurities ion, to improve the stability of chemical nickel phosphorus plating tank liquor, subtract
The influence of few metal impurities ion pair plating solution, the aluminium used now and Electroless Nickel Plating of Aluminum Alloy phosphorus technique are typically in traditional handicraft
Chemical nickel phosphorus plating work step before, increase together leaching nickel work step, meanwhile, leaching nickel also can further aid in enhancing coating and matrix knot
With joint efforts.But chemical nickel phosphorus plating, when etching time is shorter, acid etching are carried out to 7A19 materials using traditional chemical nickel phosphorus plating technique
Liquid decomposes not exclusively the natural dense oxide film layer of material, when etching time is longer, and erosion phenomenon easily occurred, and was not easy
Control.And after 7A19 material work pieces are using leaching nickel technique, then reacted in chemical nickel phosphorus plating tank liquor, find abnormal reaction
Acutely, it is difficult to control, so as to cause coating surface extremely coarse, comprehensive bubbling, bubbling is not of uniform size and intensive, cannot be outer
Sight and the coating of performance qualification.
To ensure the combination power between coating and matrix, ensure the appearance and performance of coating, the technique of chemical nickel phosphorus plating also needs
Improved.
The content of the invention
The purpose of the present invention is intended to overcome the shortcomings of the prior art, there is provided is combined between a kind of nickel-phosphorus coating and matrix
Power is strong, and coating brightness is high, the technique side of the coating crystallization more 7A19 aluminum alloy material surface chemical nickel phosphorus platings of even compact
Method.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：
A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating, it comprises the following steps：
Step（1）, Solvent degreasing：Room temperature brushing oil removing is carried out to workpiece surface to be plated with organic solvent, eliminates work to be plated
Part surface and oil contaminant and drying process；
Step（2）, electrochemical deoiling：Will be through step（1）Workpiece to be plated after processing is placed in aluminium alloy degreasing agent solution, and room temperature is removed
20~30min of oil, then rinsed well with tap water, it is wet face state to make workpiece surface to be plated, and continuous moisture film is presented；
Step（3）, alkaline etching：Will be through step（2）Completely workpiece to be plated is placed in sodium hydroxide alkaline etching liquid for oil removing, the hydroxide
The content of sodium hydroxide is 30g/L~40g/L in sodium Alkaline etchant, alkaline etching temperature≤60 DEG C, and the alkaline etching time is 60s~180s, alkali
Rinsed well after erosion using tap water；
Step（4）, light extraction：Will be through step（3）Workpiece to be plated after alkaline etching is placed in the light-emitting solution being made of nitric acid and hydrofluoric acid,
The volume ratio of nitric acid and hydrofluoric acid is 4 in the light-emitting solution：1, nitric acid is the industrial nitric acid of 60% mass concentration, and hydrofluoric acid is point
Analyse pure, surplus is deionized water；Workpiece to be plated after light extraction manifests metallic luster, is rinsed well with tap water；
Step（5）, once soak zinc：Will be through step（4）The workpiece to be plated rinsed well is placed in zincate solution, and immersion at room temperature is
60s；Workpiece to be plated, which once soaks zinc, to be terminated to rinse well using tap water；
Step（6）Move back zinc：By workpiece to be plated insert mass concentration be 35%~55% salpeter solution, at room temperature soak 120s~
180s, workpiece to be plated manifests metallic luster after zinc layers stripping, is rinsed well with tap water；
Step（7）Secondary soaking zinc：Will be through step（6）The workpiece to be plated after zinc processing is moved back to be placed in and step（5）Identical zincate solution
In, secondary soaking zinc is carried out at room temperature, and the secondary soaking zinc time is 40s；Leaching zinc terminates to rinse well using tap water；
Step（8）Deionization is washed and deionization hot water wash：Will be through step（7）The workpiece to be plated that tap water is rinsed well spend from
Sub- water rinses, and then carries out pre- hot wash using the deionized water of temperature >=90 DEG C, and pre- hot wash regards workpiece size to be plated, and the time is
60s~120s；
Step（9）, chemical nickel phosphorus plating：Will be through step（8）Workpiece to be plated after processing is placed in chemical nickel plating phosphorus solution, chemical plating
Nickel phosphorus temperature is 86 DEG C~88 DEG C, and pH is 4.4~4.6, time 2-5h.
Preferably, the Solvent degreasing is 100% industrial alcohol or banana oil；
Preferably, the aluminium alloy degreasing agent uses 100% PA30-AL5 commodity aluminum component degreasing agents.
Preferably, the zincate solution is made of sodium hydroxide, zinc oxide, complexing agent and reducing agent, sodium hydroxide, oxygen
The mass ratio for changing zinc, complexing agent and reducing agent is 25：5：10：1, surplus is deionized water.
Preferably, the chemical nickel plating phosphorus solution is by nickel salt, reducing agent hypophosphite, complexing agent and stabilizer group
Into；Nickel salt, hypophosphite, complexing agent, the mass ratio of stabilizer are 10 in the chemical nickel plating phosphorus solution：（12~14）：（13
~17）：（1~1.4）, surplus is deionized water.
Compared with prior art, the invention has the advantages that：
The present invention can thoroughly remove the oxide-film of workpiece surface to be plated, and increase binding force of cladding material, obtained coating and matrix
Combination power meet 220 DEG C of GB/T5270, the thermal shock test of 1.5h, film hardness is more than 500HV0.1, thickness >=35 μm
Film layer disclosure satisfy that corrosion-resistant Testing index：90 DEG C, 25% NaOH solution immersion 2.5h, 60 DEG C, 15% NaOH solution immersion
5h, 30 DEG C, 8% NaOH solution immersion 10h, coating are corrosion-free without damage, matrix.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained under the premise of not making the creative labor, belong to the model that the present invention protects
Enclose.
Embodiment one
To 7A19 aluminum alloy material surface chemical nickel phosphorus platings, comprise the following steps：
Step（1）, Solvent degreasing：Room temperature brushing oil removing is carried out to workpiece surface to be plated with organic solvent, eliminates work to be plated
Part surface and oil contaminant and drying process；The organic solvent is common commercially available oil removing organic solvent, and the present embodiment is using 100%
Industrial alcohol；
Step（2）, electrochemical deoiling：Will be through step（1）Workpiece to be plated after processing is placed in aluminium alloy degreasing agent solution, and room temperature is removed
Oily 20min, then rinsed well with tap water, it is wet face state to make workpiece surface to be plated, and continuous moisture film is presented；The aluminium alloy
Degreasing agent is commercial product, and the present embodiment uses the 100% special degreasing agent of PA30-AL5 commodity aluminum components；
Step（3）, alkaline etching：Will be through step（2）Completely workpiece to be plated is placed in sodium hydroxide alkaline etching liquid for oil removing, the hydroxide
The content of sodium hydroxide is 30g/L in sodium Alkaline etchant, and 22 DEG C of alkaline etching temperature, the alkaline etching time is 180s, and tap water is used after alkaline etching
Rinse well；
Step（4）, light extraction：Will be through step（3）Workpiece to be plated after alkaline etching is placed in the light-emitting solution being made of nitric acid and hydrofluoric acid,
The volume ratio of nitric acid and hydrofluoric acid is 4 in the light-emitting solution：1, nitric acid is the industrial nitric acid of 60% mass concentration, and hydrofluoric acid is point
Analyse pure, surplus is deionized water；Workpiece to be plated after light extraction manifests metallic luster, is rinsed well with tap water；
Step（5）, once soak zinc：Will be through step（4）The workpiece to be plated rinsed well is placed in zincate solution, and immersion at room temperature is
60s；Workpiece to be plated, which once soaks zinc, to be terminated to rinse well using tap water；The zincate solution is commercial product, the leaching of the present embodiment
Zinc liquid is made of sodium hydroxide, zinc oxide, complexing agent and reducing agent, sodium hydroxide, zinc oxide, the quality of complexing agent and reducing agent
Than for 25：5：10：1, surplus is deionized water；Complexing agent and reducing agent are commercially available leaching common dose of kind of zinc；
Step（6）Move back zinc：Workpiece to be plated is inserted into the salpeter solution that mass concentration is 35%, soaks 120s, zinc layers stripping at room temperature
Workpiece to be plated manifests metallic luster afterwards, is rinsed well with tap water；
Step（7）Secondary soaking zinc：Will be through step（6）The workpiece to be plated after zinc processing is moved back to be placed in and step（5）Identical zincate solution
In, secondary soaking zinc is carried out at room temperature, and the secondary soaking zinc time is 40s；Leaching zinc terminates to rinse well using tap water；
Step（8）Deionization is washed and deionization hot water wash：Will be through step（7）The workpiece to be plated that tap water is rinsed well spend from
Sub- water rinses, and then carries out pre- hot wash using the deionized water of 92 DEG C of temperature, pre- hot wash regards workpiece size to be plated, time 60s；
Step（9）, chemical nickel phosphorus plating：Will be through step（8）Workpiece to be plated after processing is placed in chemical nickel plating phosphorus solution, chemical plating
Nickel phosphorus temperature is 86 DEG C~88 DEG C, pH 4.52, time 4h, molten using low pressure gas agitating chemical nickel phosphorus plating during plating
Liquid.The chemical nickel plating phosphorus solution is to commonly use commercial solution, and the chemical nickel plating phosphorus solution in the present embodiment is by nickel salt, reducing agent
Phosphite, complexing agent and stabilizer composition；Nickel salt, hypophosphite, complexing agent, stabilizer in the chemical nickel plating phosphorus solution
Mass ratio be 10：（12~14）：（13~17）：（1~1.4）, surplus is deionized water；Complexing agent and stabilizer are nickel-plated phosphor
Common dose of kind.
After the plating of this example, the average thickness of crystalline phase method detection coating is used as 56.3um, film hardness 514HV0.1.
Coating is bright, smooth, uniform, fine and close, and by optical microphotograph sem observation, coating is without blistering, peeling and seminess；To work after plating
Part carries out thermal shock test, 220 DEG C, insulation 1.5 it is small when after take out and be put into tap water and cool down, reciprocal 5 times, in light microscope
Lower observation, coating is without blistering, peeling and seminess；2.5h, 60 DEG C, 15% NaOH are soaked in the NaOH solution of 90 DEG C, 25%
Solution soaks 5h, 30 DEG C, coating is corrosion-free without damage, matrix after 8% NaOH solution immersion 10h.
Embodiment two
To 7A19 aluminum alloy material surface chemical nickel phosphorus platings, comprise the following steps：
Step（1）, Solvent degreasing：Room temperature brushing oil removing is carried out to workpiece surface to be plated with organic solvent, eliminates work to be plated
Part surface and oil contaminant and drying process；The organic solvent is common commercially available oil removing organic solvent, and the present embodiment is using 100%
Industrial alcohol；
Step（2）, electrochemical deoiling：Will be through step（1）Workpiece to be plated after processing is placed in aluminium alloy degreasing agent solution, and room temperature is removed
Oily 26min, then rinsed well with tap water, it is wet face state to make workpiece surface to be plated, and continuous moisture film is presented；The aluminium alloy
Degreasing agent is commercial product, and the present embodiment uses the 100% special degreasing agent of PA30-AL5 commodity aluminum components；
Step（3）, alkaline etching：Will be through step（2）Completely workpiece to be plated is placed in sodium hydroxide alkaline etching liquid for oil removing, the hydroxide
The content of sodium hydroxide is 40g/L in sodium Alkaline etchant, and alkaline etching temperature 45 C, the alkaline etching time is 100s, and tap water is used after alkaline etching
Rinse well；
Step（4）, light extraction：Will be through step（3）Workpiece to be plated after alkaline etching is placed in the light-emitting solution being made of nitric acid and hydrofluoric acid,
The volume ratio of nitric acid and hydrofluoric acid is 4 in the light-emitting solution：1, nitric acid is the industrial nitric acid of 60% mass concentration, and hydrofluoric acid is point
Analyse pure, surplus is deionized water；Workpiece to be plated after light extraction manifests metallic luster, is rinsed well with tap water；
Step（5）, once soak zinc：Will be through step（4）The workpiece to be plated rinsed well is placed in zincate solution, and immersion at room temperature is
60s；Workpiece to be plated, which once soaks zinc, to be terminated to rinse well using tap water；The zincate solution is commercial product, the leaching of the present embodiment
Zinc liquid is made of sodium hydroxide, zinc oxide, complexing agent and reducing agent, sodium hydroxide, zinc oxide, the quality of complexing agent and reducing agent
Than for 25：5：10：1, surplus is deionized water；Complexing agent and reducing agent are commercially available leaching common dose of kind of zinc；
Step（6）Move back zinc：Workpiece to be plated is inserted into the salpeter solution that mass concentration is 55%, soaks 180s, zinc layers stripping at room temperature
Workpiece to be plated manifests metallic luster afterwards, is rinsed well with tap water；
Step（7）Secondary soaking zinc：Will be through step（6）The workpiece to be plated after zinc processing is moved back to be placed in and step（5）Identical zincate solution
In, secondary soaking zinc is carried out at room temperature, and the secondary soaking zinc time is 40s；Leaching zinc terminates to rinse well using tap water；
Step（8）Deionization is washed and deionization hot water wash：Will be through step（7）The workpiece to be plated that tap water is rinsed well spend from
Sub- water rinses, and then carries out pre- hot wash using the deionized water of 90 DEG C of temperature, and pre- hot wash regards workpiece size to be plated, and the time is
120s；
Step（9）, chemical nickel phosphorus plating：Will be through step（8）Workpiece to be plated after processing is placed in chemical nickel plating phosphorus solution, chemical plating
Nickel phosphorus temperature is 86 DEG C~88 DEG C, pH 4.4, time 2h, and low pressure gas agitating chemical nickel phosphorus plating solution is used during plating.
The chemical nickel plating phosphorus solution is to commonly use commercial solution, and the chemical nickel plating phosphorus solution in the present embodiment is sub- by nickel salt, reducing agent time
Phosphate, complexing agent and stabilizer composition；Nickel salt in the chemical nickel plating phosphorus solution, hypophosphite, complexing agent, stabilizer
Mass ratio is 10：（12~14）：（13~17）：（1~1.4）, surplus is deionized water；Complexing agent and stabilizer are normal for nickel-plated phosphor
Agent kind.
After the plating of this example, the average thickness of crystalline phase method detection coating is used as 39.6um, film hardness 514HV0.1.
Coating is bright, smooth, uniform, fine and close, and by optical microphotograph sem observation, coating is without blistering, peeling and seminess；To work after plating
Part carries out thermal shock test, 220 DEG C, insulation 1.5 it is small when after take out and be put into tap water and cool down, reciprocal 5 times, in light microscope
Lower observation, coating is without blistering, peeling and seminess；2.5h, 60 DEG C, 15% NaOH are soaked in the NaOH solution of 90 DEG C, 25%
Solution soaks 5h, 30 DEG C, coating is corrosion-free without damage, matrix after 8% NaOH solution immersion 10h.
Embodiment three
To 7A19 aluminum alloy material surface chemical nickel phosphorus platings, comprise the following steps：
Step（1）, Solvent degreasing：Room temperature brushing oil removing is carried out to workpiece surface to be plated with organic solvent, eliminates work to be plated
Part surface and oil contaminant and drying process；The organic solvent is common commercially available oil removing organic solvent, and the present embodiment uses banana oil；
Step（2）, electrochemical deoiling：Will be through step（1）Workpiece to be plated after processing is placed in aluminium alloy degreasing agent solution, and room temperature is removed
Oily 30min, then rinsed well with tap water, it is wet face state to make workpiece surface to be plated, and continuous moisture film is presented；The aluminium alloy
Degreasing agent is commercial product, and the present embodiment uses the 100% special degreasing agent of PA30-AL5 commodity aluminum components；
Step（3）, alkaline etching：Will be through step（2）Completely workpiece to be plated is placed in sodium hydroxide alkaline etching liquid for oil removing, the hydroxide
The content of sodium hydroxide is 35g/L in sodium Alkaline etchant, and alkaline etching temperature 60 C, the alkaline etching time is 60s, is rushed after alkaline etching using tap water
Wash clean；
Step（4）, light extraction：Will be through step（3）Workpiece to be plated after alkaline etching is placed in the light-emitting solution being made of nitric acid and hydrofluoric acid,
The volume ratio of nitric acid and hydrofluoric acid is 4 in the light-emitting solution：1, nitric acid is the industrial nitric acid of 60% mass concentration, and hydrofluoric acid is point
Analyse pure, surplus is deionized water；Workpiece to be plated after light extraction manifests metallic luster, is rinsed well with tap water；
Step（5）, once soak zinc：Will be through step（4）The workpiece to be plated rinsed well is placed in zincate solution, and immersion at room temperature is
60s；Workpiece to be plated, which once soaks zinc, to be terminated to rinse well using tap water；The zincate solution is commercial product, the leaching of the present embodiment
Zinc liquid is made of sodium hydroxide, zinc oxide, complexing agent and reducing agent, sodium hydroxide, zinc oxide, the quality of complexing agent and reducing agent
Than for 25：5：10：1, surplus is deionized water；Complexing agent and reducing agent are commercially available leaching common dose of kind of zinc；
Step（6）Move back zinc：Workpiece to be plated is inserted into the salpeter solution that mass concentration is 45%, soaks 150s, zinc layers stripping at room temperature
Workpiece to be plated manifests metallic luster afterwards, is rinsed well with tap water；
Step（7）Secondary soaking zinc：Will be through step（6）The workpiece to be plated after zinc processing is moved back to be placed in and step（5）Identical zincate solution
In, secondary soaking zinc is carried out at room temperature, and the secondary soaking zinc time is 40s；Leaching zinc terminates to rinse well using tap water；
Step（8）Deionization is washed and deionization hot water wash：Will be through step（7）The workpiece to be plated that tap water is rinsed well spend from
Sub- water rinses, and then carries out pre- hot wash using the deionized water of 92 DEG C of temperature, pre- hot wash regards workpiece size to be plated, time 60s；
Step（9）, chemical nickel phosphorus plating：Will be through step（8）Workpiece to be plated after processing is placed in chemical nickel plating phosphorus solution, chemical plating
Nickel phosphorus temperature is 86 DEG C~88 DEG C, pH 4.6, time 5h, and low pressure gas agitating chemical nickel phosphorus plating solution is used during plating.
The chemical nickel plating phosphorus solution is to commonly use commercial solution, and the chemical nickel plating phosphorus solution in the present embodiment is sub- by nickel salt, reducing agent time
Phosphate, complexing agent and stabilizer composition；Nickel salt in the chemical nickel plating phosphorus solution, hypophosphite, complexing agent, stabilizer
Mass ratio is 10：（12~14）：（13~17）：（1~1.4）, surplus is deionized water；Complexing agent and stabilizer are normal for nickel-plated phosphor
Agent kind.
After the plating of this example, the average thickness of crystalline phase method detection coating is used as 47.1um, film hardness 514HV0.1.
Coating is bright, smooth, uniform, fine and close, and by optical microphotograph sem observation, coating is without blistering, peeling and seminess；To work after plating
Part carries out thermal shock test, 220 DEG C, insulation 1.5 it is small when after take out and be put into tap water and cool down, reciprocal 5 times, in light microscope
Lower observation, coating is without blistering, peeling and seminess；2.5h, 60 DEG C, 15% NaOH are soaked in the NaOH solution of 90 DEG C, 25%
Solution soaks 5h, 30 DEG C, coating is corrosion-free without damage, matrix after 8% NaOH solution immersion 10h.
The present invention thoroughly removes the oxide-film of workpiece surface to be plated by alkaline etching, light extraction and secondary soaking zinc, and alkaline etching simultaneously goes out
After light, matrix surface exposes metallic matrix completely first, is first plated by secondary soaking zinc and is covered with nano level pre- zinc coat, at the same time
Abandon the leaching nickel work step in traditional handicraft, the plated nickel phosphorous layer directly on pre- zinc coat.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating, it is characterised in that comprise the following steps：
Step（1）, Solvent degreasing：Room temperature brushing oil removing is carried out to workpiece surface to be plated with organic solvent, eliminates work to be plated
Part surface and oil contaminant and drying process；
Step（2）, electrochemical deoiling：Will be through step（1）Workpiece to be plated after processing is placed in aluminium alloy degreasing agent solution, and room temperature is removed
20~30min of oil, then rinsed well with tap water, it is wet face state to make workpiece surface to be plated, and continuous moisture film is presented；
Step（3）, alkaline etching：Will be through step（2）Completely workpiece to be plated is placed in sodium hydroxide alkaline etching liquid for oil removing, the hydroxide
The content of sodium hydroxide is 30g/L~40g/L in sodium Alkaline etchant, alkaline etching temperature≤60 DEG C, and the alkaline etching time is 60s~180s, alkali
Rinsed well after erosion using tap water；
Step（4）, light extraction：Will be through step（3）Workpiece to be plated after alkaline etching is placed in the light-emitting solution being made of nitric acid and hydrofluoric acid,
The volume ratio of nitric acid and hydrofluoric acid is 4 in the light-emitting solution：1, nitric acid is the industrial nitric acid of 60% mass concentration, and hydrofluoric acid is point
Analyse pure, surplus is deionized water；Workpiece to be plated after light extraction manifests metallic luster, is rinsed well with tap water；
Step（5）, once soak zinc：Will be through step（4）The workpiece to be plated rinsed well is placed in zincate solution, and immersion at room temperature is
60s；Workpiece to be plated, which once soaks zinc, to be terminated to rinse well using tap water；
Step（6）Move back zinc：By workpiece to be plated insert mass concentration be 35%~55% salpeter solution, at room temperature soak 120s~
180s, workpiece to be plated manifests metallic luster after zinc layers stripping, is rinsed well with tap water；
Step（7）Secondary soaking zinc：Will be through step（6）The workpiece to be plated after zinc processing is moved back to be placed in and step（5）Identical zincate solution
In, secondary soaking zinc is carried out at room temperature, and the secondary soaking zinc time is 40s；Leaching zinc terminates to rinse well using tap water；
Step（8）Deionization is washed and deionization hot water wash：Will be through step（7）The workpiece to be plated that tap water is rinsed well spend from
Sub- water rinses, and then carries out pre- hot wash using the deionized water of temperature >=90 DEG C, and pre- hot wash regards workpiece size to be plated, and the time is
60s~120s；
Step（9）, chemical nickel phosphorus plating：Will be through step（8）Workpiece to be plated after processing is placed in chemical nickel plating phosphorus solution, chemical plating
Nickel phosphorus temperature is 86 DEG C~88 DEG C, and pH is 4.4~4.6, time 2-5h.
2. the process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating according to claim 1, it is characterised in that：It is described
Solvent degreasing is 100% industrial alcohol or banana oil.
3. the process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating according to claim 1 or claim 2, it is characterised in that：
The aluminium alloy degreasing agent uses 100% PA30-AL5 commodity aluminum component degreasing agents.
4. the process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating according to claim 1 or claim 2, it is characterised in that：
The zincate solution is made of sodium hydroxide, zinc oxide, complexing agent and reducing agent, sodium hydroxide, zinc oxide, complexing agent and reduction
The mass ratio of agent is 25：5：10：1, surplus is deionized water.
5. the process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating according to claim 1 or claim 2, it is characterised in that：
The chemical nickel plating phosphorus solution is made of nickel salt, reducing agent hypophosphite, complexing agent and stabilizer；The chemical nickel phosphorus plating is molten
Nickel salt, hypophosphite, complexing agent, the mass ratio of stabilizer are 10 in liquid：（12~14）：（13~17）：（1~1.4）, surplus
For deionized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319974.6A CN108034932A (en) | 2017-12-12 | 2017-12-12 | A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319974.6A CN108034932A (en) | 2017-12-12 | 2017-12-12 | A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108034932A true CN108034932A (en) | 2018-05-15 |
Family
ID=62102111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319974.6A Pending CN108034932A (en) | 2017-12-12 | 2017-12-12 | A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108034932A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205662A (en) * | 2019-06-27 | 2019-09-06 | 安徽鼎旺环保材料科技有限公司 | A kind of aluminium alloy surface electric plating preprocess method |
| CN110592628A (en) * | 2019-10-24 | 2019-12-20 | 中电国基南方集团有限公司 | Coating process of silicon-aluminum composite material |
| CN110952120A (en) * | 2019-12-20 | 2020-04-03 | 杭州和韵科技有限公司 | Aluminum alloy nickel plating pretreatment method |
| CN111364030A (en) * | 2020-04-07 | 2020-07-03 | 上海交通大学 | Pretreatment method for improving flatness of electroless NiP plating layer on aluminum substrate |
| CN111893464A (en) * | 2020-07-27 | 2020-11-06 | 西安工业大学 | Preparation method for plating Ni-P film on surface of aluminum alloy substrate |
| CN113529079A (en) * | 2021-06-24 | 2021-10-22 | 惠州市安泰普表面处理科技有限公司 | Method for chemically plating nickel on surface of aluminum alloy |
| CN115570133A (en) * | 2022-10-27 | 2023-01-06 | 陈瑞春 | Preparation method of silver-coated aluminum powder for electromagnetic shielding material conductive rubber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439462A (en) * | 2008-12-30 | 2009-05-27 | 河海大学 | Method for imbedding aluminum alloy on part of magnesium alloy casting parts |
| CN101775593A (en) * | 2010-02-09 | 2010-07-14 | 浙江大学 | Heat treatment method of ultrahard aluminum alloy after chemical nickel-plating |
| CN104894540A (en) * | 2015-06-19 | 2015-09-09 | 上海铄创微波器件表面技术有限公司 | Chemical nickel-plating process universal for magnesium-lithium alloy matrix and magnesium-aluminum alloy matrix |
| CN105401148A (en) * | 2015-11-12 | 2016-03-16 | 蚌埠开恒电子有限公司 | Gold plating method for high-silicon-alloy composite material applied to multi-chip T/R assembly packaging shell |
| CN105937026A (en) * | 2016-06-25 | 2016-09-14 | 安徽柒柒塑业有限公司 | Chemical nickel plating process of aluminum alloy |
-
2017
- 2017-12-12 CN CN201711319974.6A patent/CN108034932A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439462A (en) * | 2008-12-30 | 2009-05-27 | 河海大学 | Method for imbedding aluminum alloy on part of magnesium alloy casting parts |
| CN101775593A (en) * | 2010-02-09 | 2010-07-14 | 浙江大学 | Heat treatment method of ultrahard aluminum alloy after chemical nickel-plating |
| CN104894540A (en) * | 2015-06-19 | 2015-09-09 | 上海铄创微波器件表面技术有限公司 | Chemical nickel-plating process universal for magnesium-lithium alloy matrix and magnesium-aluminum alloy matrix |
| CN105401148A (en) * | 2015-11-12 | 2016-03-16 | 蚌埠开恒电子有限公司 | Gold plating method for high-silicon-alloy composite material applied to multi-chip T/R assembly packaging shell |
| CN105937026A (en) * | 2016-06-25 | 2016-09-14 | 安徽柒柒塑业有限公司 | Chemical nickel plating process of aluminum alloy |
Non-Patent Citations (2)
| Title |
|---|
| 涂湘缃: "《实用防腐蚀工程施工手册》", 30 April 2000, 化学工业出版社 * |
| 蒙铁桥: "铝合金化学镀镍工艺", 《材料保护》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205662A (en) * | 2019-06-27 | 2019-09-06 | 安徽鼎旺环保材料科技有限公司 | A kind of aluminium alloy surface electric plating preprocess method |
| CN110592628A (en) * | 2019-10-24 | 2019-12-20 | 中电国基南方集团有限公司 | Coating process of silicon-aluminum composite material |
| CN110952120A (en) * | 2019-12-20 | 2020-04-03 | 杭州和韵科技有限公司 | Aluminum alloy nickel plating pretreatment method |
| CN111364030A (en) * | 2020-04-07 | 2020-07-03 | 上海交通大学 | Pretreatment method for improving flatness of electroless NiP plating layer on aluminum substrate |
| CN111893464A (en) * | 2020-07-27 | 2020-11-06 | 西安工业大学 | Preparation method for plating Ni-P film on surface of aluminum alloy substrate |
| CN113529079A (en) * | 2021-06-24 | 2021-10-22 | 惠州市安泰普表面处理科技有限公司 | Method for chemically plating nickel on surface of aluminum alloy |
| CN113529079B (en) * | 2021-06-24 | 2023-10-31 | 惠州市安泰普表面处理科技有限公司 | Method for chemically plating nickel on surface of aluminum alloy |
| CN115570133A (en) * | 2022-10-27 | 2023-01-06 | 陈瑞春 | Preparation method of silver-coated aluminum powder for electromagnetic shielding material conductive rubber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108034932A (en) | A kind of process of 7A19 aluminum alloy material surfaces chemical nickel phosphorus plating | |
| US9441115B2 (en) | Aqueous phase pore sealing agent imroving PCB coating oxidation-resistant and corrosion-resistant properties and method for using same | |
| CN101864584B (en) | Barrel plating electroplate liquid and battery steel shell method of barrel electroplating | |
| CN104005026A (en) | Method for preparing corrosion-resistant super-hydrophobic membrane layer on surface of magnesium alloy | |
| CN103046052B (en) | The stripping liquid of environment-friendly type titanium-containing film and using method thereof | |
| KR101273749B1 (en) | Process for production of aluminum wheel | |
| CN102234835B (en) | Stripping solution and method for stripping titanium carbide film layer by electrolysis | |
| CN101576454A (en) | Amorphous alloy metallic phase corrosive agent and metallic phase display method | |
| CN108995128B (en) | Preparation method of high-stability metal material with resin coated on surface | |
| CN108943565B (en) | Nano injection molding method for aluminum or aluminum alloy metal | |
| CN104513952B (en) | The preparation method and target material assembly of target material assembly | |
| CN104762622A (en) | A treatment method for brightening surfaces of copper nickel alloy tubes | |
| CN107779713A (en) | A kind of beryllium alumin(i)um alloy and preparation method thereof | |
| CN104073849B (en) | A kind of technique of Sintered NdFeB magnet electroplating nickel on surface tungsten phosphorus | |
| JP5733671B2 (en) | Pretreatment process for aluminum and high etch cleaner used therein | |
| CN107022762A (en) | The application of three amido fortified phenols or three amido substituted benzene thiophenols and tiny-etching treatment fluid | |
| CN110129858B (en) | Ionic liquid assisted magnesium-lithium alloy anodic oxidation film forming method | |
| CN108819092B (en) | Preparation method of high-pore-density aluminum or aluminum alloy material | |
| CN101104918A (en) | Method for modifying copper-aluminum metallurgy combination interface by auxiliary coating agent | |
| CN101457365B (en) | Method for removing chromium nitride film on base material surface | |
| CN111893464A (en) | Preparation method for plating Ni-P film on surface of aluminum alloy substrate | |
| CN101538717B (en) | Preparation method of multivariant complexing etching liquid used for magnesium alloy surface treatment | |
| KR100489640B1 (en) | Electrolyte solution for anodizing and corrosion-resisting coating method of magnesium alloy using the same | |
| CN101945544A (en) | Method for manufacturing flexible circuit board | |
| CN108187994B (en) | Preparation method of epoxy coating for improving stress corrosion resistance of magnesium alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180515 |