CN101270495A - Method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization - Google Patents
Method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization Download PDFInfo
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Abstract
The invention discloses a method for preparing an antisepsis and antiwear ceramics coating layer on the surface of alloy through microarc oxidation. The method includes three steps of collocating electrolyte, arranging power electric parameters and microarc oxidation treatment; wherein, the component concentrations of the electrolyte are sodium silicate of 20 to 100g/L, sodium hydroxide of 5 to 10g/L and organic amine additive of 5 to 15ml/L; the current density of unit area is 50 to 100A/centiare; the pulse frequency is 100 to 700Hz; the pulse dutyfactor is 20 to 90 percent; the temperature of the electrolyte in the microarc oxidation treatment is not higher than 45 DEG C. The method needs lower unit power density and has fast film forming speed to prepare the ceramics coating layer on the surface of aluminum and magnesium alloys; the method adopts 100KVA power which can treat at least 2 centiares of the surface area of the aluminum alloy for one time; the growing speed of the ceramics coating layer can reach 1 to 1.5 micron/min. The formed ceramics coating layer is uniform and compact; the rigidity of the aluminum alloy can reach 1200 to 1300Hv.
Description
Technical field
The present invention relates to a kind of corrosion protection abrasion resistant ceramic coating of alloy surface, be specifically related to the method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization, this method unit surface energy consumption is low, is suitable for the surface of disposable, abrasion resistant ceramic coating anticorrosion in aluminium, magnesium alloy component surface large-area preparation.
Background technology
Differential arc oxidation prepares aluminium, magnesium, titanium alloy surface ceramic coating technology and ties up under the high voltage effect, and insulation layer is breakdown, forms the microplasma environment at workpiece surface.In such environment, surface electrochemistry reaction, plasma assisted reaction and physical metallurgy process take place simultaneously, finally generate fine and close, firm ceramic coating at workpiece surface with original position.This technology has greatly been expanded the range of application of aluminium, magnesium, titanium alloy material, be subjected to increasing attention in industries such as Aeronautics and Astronautics, weapons, machinery, automobile, petrochemical complex, weaving, printing, the mechanical, electrical son of cigarette, light industry, medical treatment, begin to enter practical application in certain fields.
At present, utilize differential arc oxidization technique all to obtain remarkable progress in the many-sides such as wear-resisting, resistance to corrosion, surface compact degree that promote the speed of growth of film, improve film.Application number is that 2006100009889.5 Chinese invention patent application discloses aluminates system aluminum alloy surface differential arc oxidation method, and voltage is 305V-580V, and current density is 3A/dm2-5A/dm2.And characteristics of aluminate electrolyte system are that solubility product is not high, are easy to form outstanding turbid attitude, and the electrolyte ingredient control ratio is difficulty.Application number is that 01102262.0 Chinese invention patent adopts water glass dielectric medium system to prepare the aluminum alloy surface ceramic film.The patent No. is that the Chinese invention patent of ZL200310122201.0 discloses the method for mixing oxygen enrichment hydrochlorate processing aluminum alloy casting, and it is higher to implement voltage, reaches 550-650V.
Application number is that ionogen is that main component prepares ceramic coating at Mg alloy surface with the phytate in 200410100411.4 the patent.Application number is that 200510010500.4,200610042990.0,200610016709.6 series of patents adopts silicate systems or aluminates system to prepare the magnesium alloy surface micro-arc oxidation ceramic coating, existing direct supply pattern also has DC pulse, alternating-current pulse electric source modes.
Unit power density height is a common problem in the above-mentioned patented technology, even some handles the improvement of still needing of electrolytical permanent stability and controllable component: require aluminium, the Mg alloy surface of 1 square metre of area of disposable processing, the instantaneous peak power of required power supply near or considerably beyond 100KVA.Owing to need large power supply during disposable processing big area aluminium alloy element, bring enormous pressure to electrical network, throughput also is subjected to very big restriction simultaneously.If a surface-area is divided into a plurality of zones greater than 2 square metres member, adopt above-mentioned patented technology to these zonules differential arc oxidation one by one, thereby reach the method that the big area differential arc oxidation prepares the coating coating, may cause the part not cover or the coating stack near zonule division boundary, the whole consistent homogeneity in surface will be difficult to guarantee.Therefore research and develop environmental protection, element of arc under low energy consumption oxidation technology, the target that reaches disposable large-area treatment aluminium, Mg alloy surface ceramic coating seems very important.
Summary of the invention
The objective of the invention is to overcome the problem that prior art exists, provide a kind of unit power density low, film forming speed is fast, corrosion resisting property good, the method of the preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization that surface hardness is high, reach the instantaneous peak power of handling 1 square metre of aluminium alloy, Mg alloy surface and be lower than 40 kilowatts, 30 fens interior ceramic coatings that obtain the 30-50 micron thickness of clock time.
Purpose of the present invention can realize by following technical solution.
A kind of method of preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization comprises the steps and processing condition:
(1) configuration electrolytic solution: each concentration of component of electrolytic solution is water glass 20-100g/L, sodium hydroxide 5-10g/L and organic amine additive 5-15ml/L; Described organic amine additive is selected from one or more in quadrol, glycerol, trolamine, the hexamethylenetetramine;
(2) asymmetric AC and DC pulse power electrical parameter is set: according to the corrosion protection abrasion resistant ceramic coating thickness, by the 1-1.5 micron/minute coating growth speed the differential arc oxidation treatment time is set; And with current mode control out-put supply, electric current is output as asymmetric DC pulse or exchanges asymmetric pulses; When adopting asymmetric DC pulse to export, deboost is set to 500V, and the maximum current setting is according to the total surface area calculating and setting of handling member, and wherein the unit surface current density is 50-100A/ square metre; Pulse-repetition is 100-700Hz, and pulse duty factor is 20-90%; When adopting asymmetric alternating-current pulse to export, minimum voltage is set to-500V, and the ratio of maximum positive negative impulse current is set to 10: 1-2: 1, and positive negative pulse stuffing number ratio is set to 10: 1-2: 1; Described asymmetric AC and DC mao power source positive negative pulse stuffing peak value is adjustable, and pulse wave is a square wave, and the positive pulse excessively is no more than 60us to the dead band of negative pulse;
(3) differential arc oxidation is handled: the alloy components after the oil removing is connected on the electrode bar, and inserts in the electrolytic solution, start asymmetric AC and DC mao power source, the control electrolyte temperature is not higher than 45 ℃, and differential arc oxidation is handled the time that is provided with of step (2); Take off processed member, after flowing water is cleaned workpiece surface, obtain the ceramic coating alloy components behind the hot-air seasoning.
The electrolytic solution of described step (1) also comprises other supplementary additive component, and concentration is 5-15g/L, and other supplementary additive component is selected from one or more in borax, sodium wolframate, sodium metavanadate, tripoly phosphate sodium STPP, the disodium EDTA.
Described control electrolyte temperature is not higher than 45 ℃, controlled temperature by the following method: if the primary treatment workpiece is many, workpiece surface is long-pending big, the electrolyte solution temperature raises above 45 ℃, the trigger pressure pump makes electrolyte stream through radiator element, obtains cooling, guarantee the electrolyte solution temperature below 45 ℃, ionogen can life-time service.
The present invention compares with prior art, has following advantage and beneficial effect:
(1) to prepare the required unit power density of ceramic coating at aluminium, Mg alloy surface low in the present invention, film forming speed is fast: adopt the 100KVA power supply, can at least 2 square metres of aluminum alloy surface of disposable processing amass, the ceramic coating speed of growth reaches 1-1.5 micron/minute (obtaining 30-45 micrometer ceramics coating in 30 minutes).
(2) ceramic coating even compact, aluminum alloy hardness reach 1200-1300Hv (microhardness), and neutral salt spray corrosion test surpasses 1500 hours, do not have obviously corrosion.Mg alloy surface nanometer mechanics probe hardness 1090, CASS salt-fog test 96 hours, no spot corrosion vestige is more than 9 grades.
Description of drawings
Fig. 1 is the apparatus structure synoptic diagram of preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization of the present invention.
Embodiment
In order to understand technical characterstic of the present invention better, the present invention is further illustrated below in conjunction with embodiment, need to prove, embodiment is not a limiting the scope of the invention.
As shown in Figure 1, the device of preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization comprises asymmetric alternating current-direct current pulse mao power source 1, stainless steel electrolytic matter groove 2, processed member 3, electrolyte solution 4, drain pipeline 5, pressure pump 6, radiator element 7, electrode bar and workpiece hanger 8 and cross-over block 9.The positive pole of asymmetric alternating current-direct current pulse mao power source 1 is connected with electrode bar and workpiece hanger 8, its negative pole is connected with stainless steel electrolytic matter groove 2, fill electrolyte solution 4 in the stainless steel electrolytic matter groove 2, processed member 3 hangs in the electrolyte solution 4 by electrode bar and workpiece hanger 8, electrolyte solution 4 in the electrolyzer forms circulation by drain pipeline 5 and pressure pump 6, and the radiator element 7 of flowing through.Electrode bar places on the electrolyzer, adopts cross-over block 9 that they are isolated.During processing, the processed member of aluminium alloy was removed surface and oil contaminant in 5 minutes with 5% sodium hydroxide solution or other oil removing solvent soaking; Use hanger then on electrode bar and workpiece hanger 8, processed member 3 is immersed in the electrolyte solution 4; The stainless steel electrolytic groove connects a utmost point (during the DC pulse pattern, being negative electrode) of mao power source 1, and electrode bar and processed member connect another utmost point (during the DC pulse pattern, being anode) of mao power source; Trigger pressure pump 6 when electrolyte solution surpasses 45 ℃ makes the ionogen in the electrolyzer pass through pipeline 5, and the radiator element 7 of flowing through obtains cooling performances.Make corresponding volumetrical electrolyzer according to member size, disposable processing area, guarantee that pending surface immerses in the electrolytic solution fully.
The basic fundamental parameter of the asymmetric alternating current-direct current mao power source that the present invention is used is that the positive negative pulse stuffing peak value is adjustable, and continuous 0-90% is adjustable for dutycycle; Positive inverted voltage 0-500 volt is adjustable continuously; Pulse-repetition 0-1000Hz is adjustable continuously; During the work of current stabilization state, mean current fluctuates less than 1%; During the work of voltage stabilizing state, voltage fluctuation is less than 1%; Pulse wave is a square wave, and the positive pulse excessively is no more than 60us to the dead band of negative pulse; Working hour was provided with arbitrarily in 0-1000 minute; Positive negative pulse stuffing number, pulse shape can be regulated arbitrarily.This power supply can adopt the IGBT power supply.
Embodiment 1: handle a collection of LY12 aluminium alloy element, inside and outside total surface area is 0.3 square metre
A kind of aluminum alloy surface differential arc oxidation prepares the method for corrosion protection abrasion resistant ceramic coating, comprises the steps and processing condition:
(1) configuration electrolytic solution: configuration electrolyte solution 100L, electrolyte ingredient is: water glass 50g/L, sodium hydroxide 5g/L, (wherein quadrol accounts for 50% to organic amine 5ml/L, trolamine accounts for 50%) and other supplementary additive 11g/L (wherein, disodium EDTA 2g/l, borax 5g/l, sodium wolframate 3g/l and tripoly phosphate sodium STPP 1g/l).
(2) the power supply electrical parameter is set: power supply is output as asymmetric alternating-current pulse, and minimum voltage is set to-500V, and pulse height is controlled by size of current: maximum current is provided with 30A (100A/ square metre); Frequency 600Hz; The positive negative pulse stuffing number was than 4: 1; Positive negative impulse current was than 3: 1; Dutycycle 55%; 40 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution of step (1), start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the time of setting (30 minutes differential arc oxidation time), and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 160V, the final voltage 350V of differential arc oxidation.Obtain the taupe ceramic coating of even compact.After tested, 50 microns of surface ceramic coat thickness, surface hardness is 1300Hv, through 1500 hours 3.5%NaCl neutral salt spray tests, does not see evidence of corrosion.The maximum instantaneous output power of power supply of locating the LY12 aluminum alloy surface in this example is 35KW/ square metre (100AX350V), and this is worth not enough application number 2006100009889.5 required power supply momentary powers half (300AX305V).With aluminum alloy surface conventional anodization processing speed (0.2-0.5 micron/minute), hardness (HV300-500) and solidity to corrosion relatively, these aspect performances of the prepared ceramic coating of the present invention all are significantly increased.
Embodiment 2: handle a collection of LY12 aluminium alloy element, inside and outside total surface area is 0.3 square metre
A kind of aluminum alloy surface differential arc oxidation prepares the method for corrosion protection abrasion resistant ceramic coating, comprises the steps and processing condition:
(1) configuration electrolytic solution: configuration electrolyte solution 100L, electrolyte ingredient is: water glass 50g/L, sodium hydroxide 5g/L, (wherein quadrol accounts for 50% to organic amine 5ml/L, trolamine accounts for 50%) and other supplementary additive 11g/L (wherein, disodium EDTA 2g/l; Borax 5g/l; Sodium wolframate 3g/l; Tripoly phosphate sodium STPP 1g/l).
(2) the power supply electrical parameter is set: power supply is output as asymmetric alternating-current pulse, and minimum voltage is set to-500V, and pulse height is controlled by size of current: maximum current is provided with 15A (50A/ square metre); Frequency 300Hz; The positive negative pulse stuffing number was than 5: 1; Positive negative impulse current was than 10: 1; Dutycycle 70%; 30 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 30 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 160V, the final voltage 330V of differential arc oxidation.Obtain the taupe ceramic coating of even compact.After tested, 28 microns of surface ceramic coat thickness, surface hardness is 1200Hv, through 1500 hours 3.5%NaCl neutral salt spray tests, does not see evidence of corrosion.
The maximum instantaneous output power of power supply of locating the LY12 aluminum alloy surface in this example is 16.5KW/ square metre (50AX330V), and this value is about 1/5th (300AX305V) of application number 2006100009889.5 required power supply momentary powers.
Embodiment 3: handle a collection of LY12 aluminium alloy element, inside and outside total surface area is 0.3 square metre
A kind of aluminum alloy surface differential arc oxidation prepares the method for corrosion protection abrasion resistant ceramic coating, comprises the steps and processing condition:
(1) configuration electrolytic solution: configuration electrolyte solution 100L, electrolyte ingredient is: water glass 50g/L; Sodium hydroxide 5g/L; Organic amine 5ml/L, wherein quadrol accounts for 50%, and trolamine accounts for 50%; Other supplementary additive 11g/L (wherein, disodium EDTA 2g/l; Borax 5g/l; Sodium wolframate 3g/l; Tripoly phosphate sodium STPP 1g/l).
(2) the power supply electrical parameter is set: power supply is output as asymmetric alternating-current pulse, and minimum voltage is set to-500V, and pulse height is controlled by size of current: maximum current is provided with 24A (80A/ square metre); Frequency 700Hz; The positive negative pulse stuffing number was than 2: 1; Positive negative impulse current was than 3: 1; Dutycycle 20%; 30 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 30 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 160V, the final voltage 343V of differential arc oxidation.Obtain the taupe ceramic coating of even compact.After tested, 35 microns of surface ceramic coat thickness, surface hardness is 1230Hv, through 1500 hours 3.5%NaCl neutral salt spray tests, does not see evidence of corrosion.The maximum instantaneous output power of power supply of locating LY12 aluminum alloy surface differential arc oxidation in this example is 27.4KW/ square metre (80AX343V).
Embodiment 4: handle a collection of 6061 aluminium alloy elements, 0.4 square metre of the total area
(1) configuration electrolytic solution: electrolyte solution 100L, electrolyte ingredient is: water glass 60g/L; Sodium hydroxide 5g/L; Quadrol 3ml/L; Trolamine 3ml/L; Disodium EDTA 2g/l; Borax 10g/L.
(2) the power supply electrical parameter is set: power supply is output as DC pulse, and deboost is set to 500V, and pulse height is controlled by size of current: maximum current is provided with 40A (100A/ square metre); Frequency 500Hz; Dutycycle 90%; 25 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 25 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 130V, the final voltage 360V of differential arc oxidation.Obtain the oyster white ceramic coating of even compact.After tested, 40 microns of surface ceramic coat thickness, surface hardness is 1310Hv, through 1500 hours 3.5%NaCl neutral salt spray tests, does not see evidence of corrosion.The maximum instantaneous output power of power supply is 36KW/ square metre (100AX360V) in this example.
Embodiment 5: handle a collection of 6061 aluminium alloy elements, 0.4 square metre of the total area
(1) configuration electrolytic solution: electrolyte solution 100L, electrolyte ingredient is: water glass 100g/L; Sodium hydroxide 5g/L; Trolamine 10ml/L; Disodium EDTA 2g/l; Borax 10g/L.
(2) the power supply electrical parameter is set: power supply is output as DC pulse, and deboost is set to 500V, and pulse height is controlled by size of current: maximum current is provided with 30A (75A/ square metre); Frequency 500Hz; Dutycycle 90%; 25 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 25 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 120V, the final voltage 320V of differential arc oxidation.Obtain the oyster white ceramic coating of even compact.After tested, 33 microns of surface ceramic coat thickness, surface hardness is 1240Hv, through 1500 hours 3.5%NaCl neutral salt spray tests, does not see evidence of corrosion.This example differential arc oxidation maximum instantaneous output power of power supply is 24KW/ square metre (75AX320V).
Embodiment 6: handle a collection of magnesium alloy AZ91D member, 0.35 square metre of the total area
(1) configuration electrolytic solution: electrolyte solution 100L, electrolyte ingredient is: water glass 40g/L; Sodium hydroxide 15g/L; Quadrol 3ml/L; Trolamine 10ml/L; Disodium EDTA 2g/l; Borax 10g/L.
(2) the power supply electrical parameter is set: power supply is output as asymmetric alternating-current pulse, and minimum voltage is set to-500V, and pulse height is controlled by size of current: maximum current is provided with 35A (100A/ square metre); Frequency 100Hz; The positive negative pulse stuffing number was than 3: 1; Positive negative impulse current was than 3: 1; Dutycycle 55%; 30 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 30 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 150V, the final voltage 340V of differential arc oxidation.Obtain the oyster white ceramic coating of even compact.After tested, 30 microns of surface ceramic coat thickness, surface hardness is a nanometer mechanics probe hardness 1090, CASS salt-fog test 96 hours, no spot corrosion vestige.This example differential arc oxidation maximum instantaneous output power of power supply is 34KW/ square metre (100AX340V).
Embodiment 7: handle a collection of magnesium alloy AZ91D member, 0.35 square metre of the total area
(1) configuration electrolytic solution: electrolyte solution 100L, electrolyte ingredient is: water glass 20g/L; Sodium hydroxide 5g/L; Trolamine 15ml/L; Disodium EDTA 2g/l; Borax 10g/L.
(2) the power supply electrical parameter is set: power supply is output as asymmetric alternating-current pulse, and minimum voltage is set to-500V, and pulse height is controlled by size of current: maximum current is provided with 35A (100A/ square metre); Frequency 150Hz; The positive negative pulse stuffing number was than 3: 1; Positive negative impulse current was than 3: 1; Dutycycle 55%; 30 minutes differential arc oxidation time.
(3) differential arc oxidation is handled: be connected on the electrode bar with the alloy components of hanger after with oil removing, insert in the electrolytic solution, start asymmetric alternating current-direct current mao power source, differential arc oxidation is handled the 30 minutes time of setting, and the control electrolyte temperature is not higher than 45 ℃; Take off processed member, flowing water can obtain the ceramic coating alloy components behind the hot-air seasoning after cleaning workpiece surface.
In the differential arc oxidation treating processes: striking voltage 155V, the final voltage 370V of differential arc oxidation.Obtain the oyster white ceramic coating of even compact.After tested, 31 microns of surface ceramic coat thickness, surface hardness is a nanometer mechanics probe hardness 1100, CASS salt-fog test 96 hours, no spot corrosion vestige.This example differential arc oxidation maximum instantaneous output power of power supply is 37KW/ square metre (100AX370V).
More than the required maximum instantaneous power density of all examples all less than 40KW/ square metre; Film forming speed is greater than 1 micron/minute.The present invention develops the element of arc under low energy consumption oxidation technology.From the mechanism that the differential arc oxidation process differential of the arc forms, one is based on electron avalanche effect in the ceramic dielectric, and this avalanche effect is closely related with electrolytical composition; Two are based on the surface adsorption geseous discharge.Two kinds of mechanism is all with the line related parameter interwoveness of electrolyte ingredient and use.The present invention is in whole differential arc oxidation process, and the insulating film that additional power source, ionogen, metallic surface form constitutes a complete Circuits System.Only can effectively optimize coupling to ionogen, power parameter effectively, just may reduce striking voltage, under same current density, obtain film forming speed faster.As the electrolytic solution that adopts the present invention to mention wants to prepare the ceramic coating of even compact at Mg alloy surface, having only parameters such as the way of output, frequency to organically combine just can reach, otherwise very easily shelf depreciation occurs, obvious spot corrosion occurs, even be difficult to form complete top coat on the surface.This is because local ceramic coating and the power parameter that forms do not match, thereby cause rare short, this zone local current densities is very high, therefore the larger area insulation layer occurring punctures, this after-current will mainly pass through from this zone, can not form the mobile differential of the arc point of even compact again on whole surface.
Claims (4)
1, a kind of method of preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization is characterized in that, comprises the steps and processing condition:
(1) configuration electrolytic solution: each concentration of component of electrolytic solution is water glass 20-100g/L, sodium hydroxide 5-10g/L and organic amine additive 5-15ml/L; Described organic amine additive is selected from one or more in quadrol, glycerol, trolamine, the hexamethylenetetramine;
(2) asymmetric AC and DC pulse power electrical parameter is set: according to the corrosion protection abrasion resistant ceramic coating thickness, by the 1-1.5 micron/minute coating growth speed the differential arc oxidation treatment time is set; And with current mode control out-put supply, electric current is output as asymmetric DC pulse or exchanges asymmetric pulses; When adopting asymmetric DC pulse to export, deboost is set to 500V, and the maximum current setting is according to the total surface area calculating and setting of handling member, and wherein the unit surface current density is 50-100A/ square metre; Pulse-repetition is 100-700Hz, and pulse duty factor is 20-90%; When adopting asymmetric alternating-current pulse to export, minimum voltage is set to-500V, and the ratio of maximum positive negative impulse current is set to 10: 1-2: 1, and positive negative pulse stuffing number ratio is set to 10: 1-2: 1; Described asymmetric AC and DC mao power source positive negative pulse stuffing peak value is adjustable, and pulse wave is a square wave, and the positive pulse excessively is no more than 60us to the dead band of negative pulse;
(3) differential arc oxidation is handled: the alloy components after the oil removing is connected on the electrode bar, and inserts in the electrolytic solution, start asymmetric AC and DC mao power source, the control electrolyte temperature is not higher than 45 ℃, and differential arc oxidation is handled the time that is provided with of step (2); Take off processed member, after flowing water is cleaned workpiece surface, obtain the ceramic coating alloy components behind the hot-air seasoning.
2, the method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization according to claim 1, the electrolytic solution that it is characterized in that described step (1) also comprises other supplementary additive component, concentration is 5-15g/L, and described other supplementary additive component is selected from one or more in borax, sodium wolframate, sodium metavanadate, tripoly phosphate sodium STPP, the disodium EDTA.
3, the method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization according to claim 1, it is characterized in that it is to realize by the following method that described control electrolyte temperature is not higher than 45 ℃: the electrolyte solution temperature raises when surpassing 45 ℃, the trigger pressure pump, make electrolyte stream through radiator element, obtain cooling, guarantee that the electrolyte solution temperature is below 45 ℃.
4, the method for preparing corrosion protection abrasion resistant ceramic coating with alloy surface differential arc oxidization according to claim 1, when it is characterized in that asymmetric AC and DC mao power source current stabilization state is worked, mean current fluctuates less than 1%; During the work of voltage stabilizing state, voltage fluctuation is less than 1%.
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