CN109023481A - Magnesium substrates production method, magnesium substrates with ceramic flame-proof layer and application thereof - Google Patents
Magnesium substrates production method, magnesium substrates with ceramic flame-proof layer and application thereof Download PDFInfo
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- CN109023481A CN109023481A CN201811221261.0A CN201811221261A CN109023481A CN 109023481 A CN109023481 A CN 109023481A CN 201811221261 A CN201811221261 A CN 201811221261A CN 109023481 A CN109023481 A CN 109023481A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/024—Anodisation under pulsed or modulated current or potential
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
Abstract
The present invention relates to magnesium alloy technical fields, more particularly, to a kind of magnesium substrates production method with ceramic flame-proof layer, magnesium substrates and application thereof, by carrying out super micro-arc oxidation treatment to magnesium material surface, the high hard nano-alumina film ceramic flame-proof layer of one layer of even compact can be formed in magnesium surface, the present invention is formed by ceramic flame-proof layer with higher hardness and good flame-retardance, while fundamentally solving the not scratch-resistant disadvantage of traditional non-stick pan.
Description
Technical field
The present invention relates to magnesium alloy technical fields, more particularly, to a kind of magnesium substrates production side with ceramic flame-proof layer
Method, magnesium substrates and application thereof.
Background technique
People use always traditional metal pan (cast iron, stainless steel) cooking food for a long time, but in cooking process
In occur often food glue pot phenomenon.This has not only broken up food shape, and the food of viscous pot is easy to happen and is charred, or even produces
Raw harmful substance, influences human health.Furthermore it also increases cooker and scrubs difficulty, make troubles to culinary art.Therefore non-stick pan is certainly
Just as its easy cleaning, can easily decoct, cooked food and non-stick pan since invention, oil smoke can have been reduced to greatest extent, has met the modern times
People pursue green food, low fat, the performance of needs low in calories and like by public.
However, traditional cast iron, the general weight of stainless steel metal pot are larger, inconvenient to use during the cooking process, future
It is expected to replaced light alloy.In recent years, aluminium alloy is used gradually to be received by people as the raw material of non-stick pan.Mesh
Before, preparation method used by aluminium alloy non-stick pan coating layer is divided to two kinds: (1) aluminum alloy pan product is direct after sandblasting or shot-peening
Spray one layer of Teflon or other not stickness paints；(2) aluminum alloy pan product (after may also pass through sandblasting or shot-peening) is subjected to anode
Then one layer of Teflon or other not stickness paints are sprayed in oxidation on surface after oxidation.Above two processing method exists
Following disadvantage: (1) the resistance to scratching ability of coating is weak, when being cooked using aluminium alloy non-stick cooker product, does not allow using spades generally
Son；(2) intensity of polytetrafluorethylecoatings coatings is poor, is easy to fall off and damages, and can soften in cooking process, Zhi Nengyong
Wood shovel, can not cook harder food；(3) polytetrafluorethylecoatings coatings non-stick pan should not also cook acidic food, otherwise can shadow
Ring the service life of non-stick pan；(4) the use temperature of polytetrafluorethylecoatings coatings is generally no more than 250 DEG C, and people are when in use
It is difficult to strict control, is easy to damage because of dry combustion method；(5) strong to human body in use for polytetrafluorethylecoatings coatings non-stick pan
Health also always exists dispute with the presence or absence of harm, constantly initiation controversial issue；Once non-viscous paint falls off, will lead to non-stick
Energy substantially reduces.It can be seen that need to look for it is a kind of not only improve human health facilitate again culinary art pot body new material (or pass through
Surface Hardening Treatment) become non-stick pan future development new direction.
Magnesium is most light one of metal, and relative density only has 1.74g/cm3, about the 2/3 of aluminium, the 1/4 of iron, have good
Good damping property, heat conductivity, electromagnetic wave shielding, machining property and reprocessing recycling characteristic.Therefore, it is replaced using magnesium alloy
For cast iron, stainless steel metal as non-stick pan material, lightweight can be greatly enhanced.In addition, magnesium alloy has excellent biology
Compatibility also helps human health as non-stick pan material.But magnesium alloy belongs to combustible metal, if directlying adopt magnesium
Alloy substrate easily causes natural accident as non-stick pan material during the cooking process.
Therefore, the present invention is badly in need of providing a kind of new magnesium substrates production side with ceramic flame-proof layer regarding to the issue above
Method, magnesium substrates and application thereof.
Summary of the invention
The purpose of the present invention is to provide a kind of new magnesium substrates production method with ceramic flame-proof layer, magnesium substrates and its
Purposes can be in one layer of even compact height of magnesium surface formation receiving firmly by carrying out super micro-arc oxidation treatment to magnesium material surface
Rice oxidation film ceramic flame-proof layer, the present invention are formed by ceramic flame-proof layer with higher hardness and good flame-retardance, while from root
The not scratch-resistant disadvantage of traditional non-stick pan is solved in sheet.
A kind of magnesium substrates production method with ceramic flame-proof layer provided by the invention, comprising the following steps:
S1: substrate made of magnesium alloy is provided；
S2: substrate being placed in passivating solution and is passivated, its surface is made to form passivation film；
S3: the substrate after passivation being placed in electrolyte and carries out super micro-arc oxidation treatment, obtains surface with ceramic flame-proof
The magnesium substrates of layer.
Further, the passivating solution includes: one or more of ammonium acid fluoride, oxalic acid, phosphoric acid, hydrofluoric acid.
Further, super micro-arc oxidation treatment uses dipulse technique in S3.
Further, the super micro-arc oxidation electrolyte includes: 10~40g/L of potassium fluoride, and phosphate or carbonate 5~
20g/L, 2~10g/L of sodium citrate, Boratex or tartrate.
Further, the phosphate is potassium orthophosphate, potassium orthophosphate sodium, potassium phosphate,monobasic, disodium-hydrogen, di(2-ethylhexyl)phosphate
One or more of hydrogen potassium, sodium dihydrogen phosphate, potassium tripolyphosphate or sodium tripolyphosphate；The carbonate is sodium carbonate or carbonic acid
One or both of hydrogen sodium；Tartrate is one or both of potassium tartrate or sodium potassium tartrate tetrahydrate.
Further, in S3 super micro-arc oxidation treatment condition are as follows: positive final voltage be 300~1000V, negative sense terminate
Voltage is 30~80V, and oxidization time is 15~45min, 2~5A/dm of current density2, frequency is 500~1000Hz.
Further, the temperature of super micro-arc oxidation treatment is 15~50 DEG C in S3.
Further, the ceramic flame-proof layer with a thickness of 15~32 μm.
The present invention also provides a kind of magnesium substrates, by as above any magnesium substrates production method with ceramic flame-proof layer
It is made.
The present invention also provides a kind of magnesium substrates as described above be used to manufacture the purposes of magnesium non-stick pan.
The present invention has following progress compared with prior art:
1, the ceramic flame-proof layer obtained by the present invention is mainly organized as fluoride (magnesium fluoride and trifluoro magnesium potassium), instead of biography
The magnesia ceramics coating of system, the internal layer and outer layer for realizing differential arc oxidation film layer integrally densify；High hard nano ceramics resistance
Combustion layer can also improve the wearability of coating, fundamentally solve the not scratch-resistant disadvantage of traditional non-stick pan.
2. the dipulse technique that the present invention uses can be in ceramic flame-proof layer in ultra micro arc oxidation processes
Defect has inhibition and repair, refines ceramic crystalline grain and simultaneously forms a nanometer phase, greatly enhances the hardness of ceramic flame-proof layer.
3. ceramic flame-proof layer of the invention can effectively stop the oxygen transmission in combustion process, make substrate made of magnesium alloy
Surface can only occur slowly to aoxidize, and due to slow dysoxidation to provide the heat supply of magnesium matrix spontaneous combustion, thoroughly change and inhibit
Magnesium matrix causes under high temperature (1000 DEG C) or flame the phenomenon that burning；It avoids leading to magnesium alloy base since cooking temp is excessively high
Body is naturally dangerous.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the step block diagram of the heretofore described magnesium substrates production method with ceramic flame-proof layer.
Specific embodiment
Technical solution of the present invention is clearly and completely described below, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
It is shown in Figure 1, a kind of magnesium substrates production method with ceramic flame-proof layer provided by the invention, including following step
It is rapid:
S1: substrate made of magnesium alloy is provided；
S2: substrate being placed in passivating solution and is passivated, its surface is made to form passivation film；
S3: the substrate after passivation being placed in electrolyte and carries out super micro-arc oxidation treatment, obtains surface with ceramic flame-proof
The magnesium substrates of layer.
Further, the passivating solution includes: one or more of ammonium acid fluoride, oxalic acid, phosphoric acid, hydrofluoric acid.
Further, super micro-arc oxidation treatment uses dipulse technique in S3.
Further, the super micro-arc oxidation electrolyte includes: 10~40g/L of potassium fluoride, and phosphate or carbonate 5~
20g/L, 2~10g/L of sodium citrate, Boratex or tartrate.
Further, the phosphate is potassium orthophosphate, potassium orthophosphate sodium, potassium phosphate,monobasic, disodium-hydrogen, di(2-ethylhexyl)phosphate
One or more of hydrogen potassium, sodium dihydrogen phosphate, potassium tripolyphosphate or sodium tripolyphosphate；The carbonate is sodium carbonate or carbonic acid
One or both of hydrogen sodium；Tartrate is one or both of potassium tartrate or sodium potassium tartrate tetrahydrate.
Further, in S3 super micro-arc oxidation treatment condition are as follows: positive final voltage be 300~1000V, negative sense terminate
Voltage is 30~80V, and oxidization time is 15~45min, 2~5A/dm of current density2, frequency is 500~1000Hz.
Further, the temperature of super micro-arc oxidation treatment is 15~50 DEG C in S3.
Further, the passivation film with a thickness of 0.5~2 μm.
Further, the ceramic flame-proof layer with a thickness of 15~32 μm.
The present invention also provides a kind of magnesium substrates, by as above any magnesium substrates production method with ceramic flame-proof layer
It is made.
The present invention also provides a kind of magnesium substrates as described above be used to manufacture the purposes of magnesium non-stick pan.
Embodiment 1
S1. material prepares: providing substrate made of magnesium alloy, the substrate is after cutting polishing, in ethanol solution
With ultrasonic cleaning oil removing.
S2. chemical passivation: substrate is placed in the phosphatase 11 0ml/L and fluorination that temperature is 15~25 DEG C, volumetric concentration is 85%
15~30s is impregnated in the chemical passivation liquid that the aqueous solution of hydrogen ammonium 50g/L is formed, and cleans 1~2min with tap water immediately after taking-up,
1~2min is cleaned with deionized water again, forms the passivation film with a thickness of 1um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 20min is carried out in the electrolyte that 25 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 15g/L, just
The aqueous solution of potassium phosphate sodium 10g/L, potassium tartrate 5g/L, electrolyte pH=3.5~3.8；Electric source modes: it is forward and reverse, it is positive
Whole voltage is 500V, and negative sense end voltage is 30V, current density 2A/dm2, frequency 500Hz, positive and negative pulsewidth be respectively 0.5ms and
0.2ms。
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 28~30
μm, hardness Hv450 has no burning after (1000 DEG C, 5min) of combustion test tests.
Embodiment 2
S1. material prepares: substrate uses ultrasonic cleaning oil removing after cutting polishing in acetone soln；In the present embodiment
The material of substrate is pure magnesium.
S2. chemical passivation: treated that substrate is placed in the phosphoric acid 5ml/ that temperature is 15~25 DEG C, volumetric concentration is 85% by S1
15~20s is impregnated in the chemical passivation liquid that the aqueous solution of L and hydrofluoric acid 5ml/L are formed, and cleans 1 with tap water immediately after taking-up
~2min, then 1~2min is cleaned with deionized water, form the passivation film with a thickness of 0.8um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 20min is carried out in the electrolyte that 25 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 20g/L, lemon
The aqueous solution of lemon acid 5ml/L, sodium citrate 8g/L, sodium bicarbonate 10g/L, electrolyte pH=3.3~4.0,；Electric source modes:
Forward and reverse, positive end voltage is 750V, and negative sense end voltage is 40V, current density 2A/dm2, frequency 750Hz, positive and negative pulsewidth point
It Wei not 0.5ms and 0.3ms.
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 23~28
μm, hardness Hv500 has no burning after (1000 DEG C, 5min) of combustion test tests.
Embodiment 3
S1. material prepares: providing substrate made of magnesium alloy, the substrate is after cutting polishing, in ethanol solution
With ultrasonic cleaning oil removing.
S2. chemical passivation: treated that substrate is placed in the phosphoric acid 5ml/ that temperature is 15~20 DEG C, volumetric concentration is 85% by S1
10~20s is impregnated in the chemical passivation liquid that the aqueous solution of L and oxalic acid 5g/L are formed, 1 is cleaned with tap water immediately after taking-up~
2min, then 1~2min is cleaned with deionized water, form the passivation film with a thickness of 1um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 25min is carried out in the electrolyte that 25 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 25g/L, hydrogen
The aqueous solution of fluoric acid 5ml/L, sodium dihydrogen phosphate 8g/L, sodium tartrate 10g/L, electrolyte pH=3.5~4.0,；Power supply mould
Formula: forward and reverse, positive end voltage is 500V, and negative sense end voltage is 50V, current density 2.5A/dm2, frequency 750Hz, positive and negative arteries and veins
Width is respectively 0.5ms and 0.5ms.
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 27~32
μm, hardness Hv470 has no burning after (1000 DEG C, 5min) of combustion test tests.
Embodiment 4
S1. material prepares: providing substrate made of magnesium alloy, the substrate is after cutting polishing, in ethanol solution
With ultrasonic cleaning oil removing.
S2. chemical passivation: treated that substrate is placed in the hydrofluoric acid that temperature is 15~20 DEG C, volumetric concentration is 85% by S1
15~20s is impregnated in the chemical passivation liquid that the aqueous solution of 5ml/L and oxalic acid 5g/L are formed, and is cleaned immediately with tap water after taking-up
1~2min, then 1~2min is cleaned with deionized water, form the passivation film with a thickness of 1um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 20min is carried out in the electrolyte that 25 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 30g/L, phosphorus
The aqueous solution of sour 5ml/L, potassium dihydrogen phosphate 10g/L, Boratex 10g/L, electrolyte pH=3.8~4.0,；Electric source modes: just
Reversely, positive whole voltage is 800V, and negative sense end voltage is 35V, current density 2A/dm2, frequency 1000Hz, positive and negative pulsewidth difference
For 0.5ms and 0.4ms.
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 24~31
μm, hardness Hv510 has no burning after (1000 DEG C, 5min) of combustion test tests.
Embodiment 5
S1. material prepares: providing substrate made of magnesium alloy, the substrate is after cutting polishing, in ethanol solution
With ultrasonic cleaning oil removing.
S2. chemical passivation: treated that substrate is placed in the phosphoric acid that temperature is 15~25 DEG C, volumetric concentration is 85% by S1
20~25s is impregnated in the chemical passivation liquid that 10ml/L and hydrofluoric acid 5ml/L are formed, 1 is cleaned with tap water immediately after taking-up~
2min, then 1~2min is cleaned with deionized water, form the passivation film with a thickness of 1um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 30min is carried out in the electrolyte that 40 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 22g/L, phosphorus
The aqueous solution of sour 5ml/L, potassium phosphate,monobasic 11g/L, potassium tripolyphosphate 7g/L, Boratex 5g/L, electrolyte pH=3.7~
4.2；Electric source modes: forward and reverse, positive end voltage is 450V, and negative sense end voltage is 45V, current density 3.5A/dm2, frequency
650Hz, positive and negative pulsewidth are respectively 0.5ms and 0.3ms.
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 29~32
μm, hardness Hv490 has no burning after (1000 DEG C, 5min) of combustion test tests.
Embodiment 6
S1. material prepares: providing substrate made of magnesium alloy, the substrate is after cutting polishing, in ethanol solution
With ultrasonic cleaning oil removing.
S2. chemical passivation: treated that substrate is placed in the phosphoric acid 5ml/ that temperature is 15~25 DEG C, volumetric concentration is 85% by S1
15~20s is impregnated in the chemical passivation liquid that L and oxalic acid 5g/L is formed, and cleans 1~2min with tap water immediately after taking-up, then use
Deionized water cleans 1~2min, forms the passivation film with a thickness of 1um.
S3. super arc differential oxide ceramic flame-retardant layer preparation is carried out using bipolar pulse mode: the substrate after passivation is placed in
Micro-arc oxidation treatment 45min is carried out in the electrolyte that 15 DEG C of temperature, cleans 1~2min with tap water immediately after taking-up, then spend
Ionized water cleans 1~2min, obtains the magnesium substrates that surface has ceramic flame-proof layer；Wherein, electrolyte are as follows: potassium fluoride 27g/L, phosphorus
The aqueous solution of sour 3ml/L, sodium dihydrogen phosphate 5g/L, sodium tripolyphosphate 9g/L, potassium tartrate 4g/L, electrolyte pH=3.6~
4.1；Electric source modes: forward and reverse, positive end voltage is 550V, and negative sense end voltage is 40V, current density 2.8A/dm2, frequency
700Hz, positive and negative pulsewidth are respectively 0.5ms and 0.5ms.
The main performance of the ceramic flame-proof layer of magnesium non-stick pan manufactured in the present embodiment is as follows: ceramic flame-proof thickness degree 27~29
μm, hardness Hv500 has no burning after (1000 DEG C, 5min) of combustion test tests.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of magnesium substrates production method with ceramic flame-proof layer, which comprises the following steps:
S1: substrate made of magnesium alloy is provided；
S2: substrate being placed in passivating solution and is passivated, its surface is made to form passivation film；
S3: the substrate after passivation being placed in electrolyte and carries out super micro-arc oxidation treatment, obtains surface with ceramic flame-proof layer
Magnesium substrates.
2. according to claim 1 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that the passivating solution packet
It includes: one or more of ammonium acid fluoride, oxalic acid, phosphoric acid, hydrofluoric acid.
3. according to claim 1 with the magnesium alloy substrates production method of ceramic flame-proof layer, which is characterized in that ultra micro in S3
Arc oxidation processes use dipulse technique.
4. according to claim 1 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that the ultra micro arc oxygen
Changing electrolyte includes: 10~40g/L of potassium fluoride, 5~20g/L of phosphate or carbonate, sodium citrate, Boratex or tartrate
2~10g/L.
5. according to claim 3 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that the phosphate is
Potassium orthophosphate, potassium orthophosphate sodium, potassium phosphate,monobasic, disodium-hydrogen, potassium dihydrogen phosphate, sodium dihydrogen phosphate, potassium tripolyphosphate or
One or more of sodium tripolyphosphate；The carbonate is one or both of sodium carbonate or sodium bicarbonate；Tartrate
For one or both of potassium tartrate or sodium potassium tartrate tetrahydrate.
6. according to claim 4 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that ultra micro arc oxygen in S3
Change processing condition are as follows: positive final voltage be 300~1000V, negative sense final voltage be 30~80V, oxidization time be 15~
45min, 2~5A/dm of current density2, frequency is 500~1000Hz.
7. according to claim 5 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that ultra micro arc oxygen in S3
The temperature for changing processing is 15~50 DEG C.
8. according to claim 6 with the magnesium substrates production method of ceramic flame-proof layer, which is characterized in that the ceramic flame-proof
Layer with a thickness of 15~32 μm.
9. a kind of magnesium substrates, which is characterized in that by having the magnesium substrates system of ceramic flame-proof layer as described in any in claim 1-8
Make method to be made.
10. the purposes that a kind of magnesium substrates as claimed in claim 9 are used to manufacture magnesium non-stick pan.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046813A (en) * | 2021-02-19 | 2021-06-29 | 赣州有色冶金研究所有限公司 | Magnesium alloy material, preparation method and welding method thereof |
| CN113373398A (en) * | 2021-06-24 | 2021-09-10 | 重庆大学 | Flame-retardant magnesium alloy part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1928165A (en) * | 2006-06-13 | 2007-03-14 | 兰州理工大学 | Method for producing arc differential oxide ceramic layer on Mg metal surface |
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| CN108642544A (en) * | 2018-05-29 | 2018-10-12 | 河南科技大学 | A method of using differential arc oxidation oxidation film is prepared in Mg alloy surface |
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| CN1928165A (en) * | 2006-06-13 | 2007-03-14 | 兰州理工大学 | Method for producing arc differential oxide ceramic layer on Mg metal surface |
| CN101845636A (en) * | 2009-03-25 | 2010-09-29 | 中国科学院金属研究所 | Method for preparing dense fluoride ceramic films on magnesium surface and magnesium alloy surface |
| CN102677053A (en) * | 2012-01-10 | 2012-09-19 | 北京工业大学 | Preparation method of anti-corrosion composite coating on surface of magnesium alloy |
| US20160168744A1 (en) * | 2014-12-12 | 2016-06-16 | Metal Industries Research & Development Centre | Surface Treatment of a Magnesium Alloy |
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| CN108642544A (en) * | 2018-05-29 | 2018-10-12 | 河南科技大学 | A method of using differential arc oxidation oxidation film is prepared in Mg alloy surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113046813A (en) * | 2021-02-19 | 2021-06-29 | 赣州有色冶金研究所有限公司 | Magnesium alloy material, preparation method and welding method thereof |
| CN113373398A (en) * | 2021-06-24 | 2021-09-10 | 重庆大学 | Flame-retardant magnesium alloy part |
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