CN101869985B - Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process - Google Patents
Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process Download PDFInfo
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Abstract
The present invention relates to a method for preparing a metal ceramic coating material with a plasma/self-propagation high temperature synthesis/pseudo hot isostatic pressing process, relating to a method for preparing a metal-matrix ceramic coating. The invention solves the problems of low fatigue resistance, poor bonding strength, short service life and the like existing in ceramic coating prepared on the surface of metal in the prior art. The method comprises the following steps of: dry or wet mixing titanium powder, iron powder and carbon powder and pressing a preset blank; carrying out ultrasonic cleaning on a metal substrate, carrying out sand blasting and coarsening and spraying NiCrBSi with plasma; and obtaining the metal ceramic coating material with a self-propagating high-temperature synthesis combined quasi-thermal isostatic pressing method. The method has easy operation and low cost; the obtained coating and substrate achieve metallurgical bonding, has high fatigue resistance, large thickness of the coat and low porosity, improves the wear resistance of the metal surface, can be widely applied to surface treatment and remanufacture of structural steel products, tool steel products, mould steel products and the like, and prolongs the service life of the products.
Description
Technical field
The present invention relates to a kind of preparation method of metal matrix ceramic composite coating.
Background technology
Along with improving constantly of industrial production technology level, the direction of the maximization of various plant equipment forward, high efficiency, high parameter develops.Because the influence and the erosion of various natural or non-natural causes, equipment mechanical injuries such as wearing and tearing, fracture or corrosion occur unavoidably in the process of operation, also just must be unable to do without maintenance, and traditional maintenance is nothing but to scrap renewal, though simply but be not preferred plan, not only can waste substantial contribution, for the parts that are difficult in time buy, also can cause the elongation of maintenance cycle, even influence is produced.
The whole nation traditional old lathe of enlistment age more than 10 years is above 2,000,000 at present, 80% surpass the shelf-life in the labour engineering machinery, about 5,000,000 of annual report waste vapour car is scrapped 1,600 ten thousand in computer, television set, refrigerator, scrap 2,000 ten thousand ones of mobile phones, the about 800,000,000 tons of solid waste of annual generation.China has entered mechanized equipment and household electrical appliance are scrapped the peak period, and the equipment running losses is very surprising.
Add up according to U.S. Argonne National Key Laboratory, the energy consumption of 1 automobile of coming of new is 6 times that make again, the energy consumption of 1 automobile current generator of coming of new is 7 times that make again, the energy consumption of 1 automobile engine of coming of new is 11 times that make again, and the resource and environment benefit of Zhi Zaoing is equally very huge again.
The parts that make to be exactly again with waste product are blank, are reparation means (promptly prepare at the piece surface of damage that skim is wear-resisting, anti-corrosion, the face coat of antifatigue) with advanced person's surface engineering technology, and the waste product parts are reborn.Though the existing a lot of technology of Surface Engineering such as plasma thermal sprayed technology are applied to this field, there are shortcomings such as fatigue resistance is not high enough, bond strength is relatively poor, parts weak point in service life after repairing.
Problems such as in sum, existing technology exists that the metal surface prepares that ceramic coating exists that fatigue resistance is low, poor bonding strength, service life are short.
Summary of the invention
The purpose of this invention is to provide a kind of plasma/self propagating high temperature synthetic/quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, the invention solves existing technology and prepare the problem that ceramic coating exists in the metal surface: as: fatigue resistance is low, poor bonding strength, service life are short etc.The inventive method is applicable in the metal surface and obtains ceramic layer, is specially adapted to the manufacturing again of waste metal workpiece.
Ionic medium/self propagating high temperature of the present invention is synthetic/and method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, takes by weighing respectively by ratio of weight and the number of copies to mix behind 48～64 parts titanium valve, 20～40 parts of iron powders and 12～16 parts of carbon dusts and obtains compound; Two, the described compound of step 1 is put into ball grinder, adopt the method for doing mixed or wet mixing to mix, drying obtains mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 50%～60% (volume); Four, metal substrate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 16～40 orders palm fibre corundum again, then at metallic substrate surfaces plasma spraying NiCrBSi, wherein metal substrate is a steel plate; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi metal substrate, adopts self propagating high temperature to synthesize and obtains metal ceramic coating material in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method in metallic substrate surfaces.
Self propagating high temperature is synthetic in the above-mentioned steps five is undertaken by following step at metallic substrate surfaces acquisition metal ceramic coating material in conjunction with the quasi-hot isostatic pressing method: excite prefabricated blank to carry out the self propagating high temperature synthetic reaction 7～20 seconds, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12～20MPa, pressurize was taken out after 10～20 seconds, putting into sand then in 30 seconds cools off, 20～30 hours cool times, promptly obtain metal ceramic coating material in metallic substrate surfaces.
The present invention carries out preliminary treatment to metal base surface, earlier surface of the work to be sprayed is cleaned with the acetone ultrasonic wave, carry out sandblast alligatoring arrangement with 20 orders palm fibre corundum again, adopt the method for plasma spraying, obtain NiCrBSi transition zone (wetting layer) at steel material surface, and synthetic through SHS/PHIP, make between prefabricated blank and the ferrous materials and produce chemical reaction, form fine and close reaction coating.With Ti powder, Fe powder and C powder cheaply is raw material, and need not long-time high temperature heating, thereby has reduced the technology cost.Production efficiency height of the present invention, main technical process was finished in 5 minutes.Metallic substrate surfaces spraying NiCrBSi has wetting action among the present invention, increases the bond strength at interface, thereby improves subsequent handling workpiece performance, increases work efficiency, and reduces cost; And can reduce reaction temperature, thereby reduce cost.Synthesize/the synthetic TiC ceramic coating of quasi-hot isostatic pressing method original position by plasma/self propagating high temperature, a reaction and a densified step finish, and obtain the TiC ceramic coating material of high-purity compact.Its course of reaction can simply be described as: Ti+C → TiC; Process equipment is simple, and maintaining is convenient.Adopt the inventive method to obtain ceramic layer, increase the service life at the waste metal piece surface.The inventive method has improved coating and high base strength, has reduced in the coating defectives such as pore, and realizes the metallurgical binding of matrix and coating, has satisfied the workpiece instructions for use, has prolonged service life greatly.Practical, the process stabilizing of the inventive method repeated strong, easy to operate, cost is low, obtain coating and matrix and reach metallurgical binding (and the conventional spray paint interface is the mechanical bond of casting anchor), fatigue resistance height, coating layer thickness is big and porosity is low, improve the metal surface wearability, can be widely used in product surfaces such as structural steel, tool steel, mould steel and handle and make again, improve goods service life.The present invention obtains coating hardness and reaches more than the 85HRA, and bond strength reaches more than the 340Mpa.
Description of drawings
Fig. 1 is a SHS/PHIP reaction unit schematic diagram, 1 expression pressure head among Fig. 1,2 expression briquettings, 3 expression resistance wires, 4 expression sand molds, 5 expression die coats, 6 expression bases, 7 expression metal substrates, 8 expression prefabricated blank, 9 expression carbon cloths, 10 expression igniting agents, 11 expression sand cakes; Fig. 2 is a coating pattern microphoto; Fig. 3 is the microstructure photo of base steel ceramic coating combination interface.
The specific embodiment
The specific embodiment one: present embodiment ionic medium/self propagating high temperature is synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing respectively by ratio of weight and the number of copies to mix behind 48～64 parts titanium valve, 20～40 parts of iron powders and 12～16 parts of carbon dusts and obtain compound; Two, the described compound of step 1 is put into ball grinder, adopt the method for doing mixed or wet mixing to mix, drying obtains mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 50%～60% (volume); Four, metal substrate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 16～40 orders palm fibre corundum again, then at metallic substrate surfaces plasma spraying NiCrBSi, wherein metal substrate is a steel plate; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi metal substrate, adopts self propagating high temperature to synthesize and obtains metal ceramic coating material in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method in metallic substrate surfaces.
The present invention obtains coating hardness and reaches more than the 85HRA, and bond strength reaches more than the 340Mpa.
The specific embodiment two: what present embodiment and the specific embodiment one were different is: take by weighing 64 parts titanium valve, 20 parts of iron powders and 16 parts of carbon dusts in the step 1 by ratio of weight and the number of copies respectively.Other step is identical with the specific embodiment one with parameter.
The specific embodiment three: what present embodiment and the specific embodiment one were different is: take by weighing 56 parts titanium valve, 30 parts of iron powders and 14 parts of carbon dusts in the step 1 by ratio of weight and the number of copies respectively.Other step is identical with the specific embodiment one with parameter.
The specific embodiment four: what present embodiment and the specific embodiment one were different is: take by weighing 52 parts titanium valve, 35 parts of iron powders and 13 parts of carbon dusts in the step 1 by ratio of weight and the number of copies respectively.Other step is identical with the specific embodiment one with parameter.
The specific embodiment five: what present embodiment and the specific embodiment one were different is: take by weighing 48 parts titanium valve, 40 parts of iron powders and 12 parts of carbon dusts in the step 1 by ratio of weight and the number of copies respectively.Other step is identical with the specific embodiment one with parameter.
The specific embodiment six: what present embodiment was different with one of specific embodiment one to five is: self propagating high temperature is synthetic in the step 5 is undertaken by following step in conjunction with the metallic substrate surfaces acquisition metal ceramic coating material of quasi-hot isostatic pressing method at spraying NiCrBSi: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 7s～20s, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12～20MPa, take out behind pressurize 10～20s, putting into sand then in 30 seconds cools off, 20～30 hours cool times, promptly obtain metal ceramic coating material in metallic substrate surfaces.Other step is identical with one of specific embodiment one to five with parameter.
The specific embodiment seven: what present embodiment was different with one of specific embodiment one to six is: 50 ℃～60 ℃ of the temperature of step 1 drying, drying time 24h～48h.Other step is identical with one of specific embodiment one to six with parameter.
The specific embodiment eight: what present embodiment was different with one of specific embodiment one to seven is: the thickness of step 4 ionic medium spraying NiCrBSi is 50 μ m～500 μ m.Other step is identical with one of specific embodiment one to seven with parameter.
The specific embodiment nine: what present embodiment and the concrete side of enforcementing eight were different is: the thickness that the step 4 ionic medium sprays NiCrBSi is 100 μ m～200 μ m.Other step is identical with the specific embodiment eight with parameter.
The specific embodiment ten: what present embodiment and the concrete side of enforcementing eight were different is: the thickness that the step 4 ionic medium sprays NiCrBSi is 150 μ m.Other step is identical with the specific embodiment eight with parameter.
The specific embodiment 11: what present embodiment was different with one of specific embodiment one to ten is: the relative density of the prefabricated blank of suppressing in the step 2 is 55%.Other step is identical with one of specific embodiment one to ten with parameter.
The specific embodiment 12: what present embodiment was different with one of specific embodiment one to 11 is: described dried the mixing of step 2 undertaken by following operation: with 40～60 rev/mins of ball milling 24～30h of rotating speed, ball material mass ratio is 2～5: 1.Other step is identical with one of specific embodiment one to 11 with parameter.
The specific embodiment 13: what present embodiment was different with one of specific embodiment one to 11 is: the described wet mixing of step 2 is undertaken by following operation: the described compound of step 1 is put into ball grinder, in ball grinder, add absolute ethyl alcohol again, the absolute ethyl alcohol consumption is 2/3～3/4 of a compound weight, with 200～300 rev/mins of ball milling 24～30h of rotating speed, ball material mass ratio is 1～3: 1.Other step is identical with one of specific embodiment one to 11 with parameter.
The specific embodiment 14: (referring to Fig. 1) present embodiment ionic medium/self propagating high temperature is synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing respectively by ratio of weight and the number of copies 64 parts titanium valve (granularity 300 orders, purity are more than 99.5%), 20 parts of iron powders
(purity more than 99.5%, granularity 200 orders) and 16 parts of carbon dusts (purity is more than 99.5%) back is mixed and is obtained compound; Two, the described compound of step 1 is put into ball grinder, do with 50 rev/mins of rotating speeds and mix 24h, ball material mass ratio is 5: 1, and abrading-ball is that diameter is the stainless steel ball of 8～30mm, and then dry 24h under 50 ℃ of conditions, obtains mixed powder; Three, the mixed powder that the 200g step 2 is obtained is put into the stainless steel mould of Φ 55 * 120mm, and being pressed into relative density under the pressure of 5.5MPa is the prefabricated blank 8 of 55% (volume); Four, steel plate (metal substrate) is used the acetone ultrasonic cleaning, carry out the sandblast alligatoring with 20 orders palm fibre corundum again, then at surface of steel plate plasma spraying NiCrBSi, plasma spraying NiCrBSi, the thickness of NiCrBSi are 150 μ m; Five, spraying NiCrBSi carbon steel sheet 7 is placed on the base 6 of SHS/PHIP device, on carbon steel sheet 7, put prefabricated blank 8, igniting agent 10 and resistance wire 3 are placed in upper surface center in prefabricated blank 8, place the husky cake 11 of a respective diameters then, husky cake 11 tops are the briquetting 2 (steel) of height 30mm, resistance wire 3 lead-in wires are drawn from briquetting 2, be connected with igniter in (concrete placement form as shown in Figure 1), excite prefabricated blank 8 to carry out self propagating high temperature synthetic reaction 7s by resistive heater 3 igniting agent 10 that ignites, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12MPa, pressurize was taken out after 10 seconds, putting into sand then in 30 seconds cools off, 20～30 hours cool times, promptly obtain metal ceramic coating material at surface of steel plate.
Present embodiment obtains coating hardness greater than 85HRA, and bond strength is greater than 340MPa.
The result as shown in Figures 2 and 3, as can be seen from Figure 2, under quasi-hot isostatic pressing method state, particles filled part hole; By impressed pressure and capillary force action, the metal liquid phase is forced to insert in hole and the particle gap, plays cementation; The existence of the metal liquid phase between the ceramic particle has been avoided the gathering of TiC crystal grain and has been grown up, and makes the TiC particle size be tending towards even.Synthetic product is by being close to the phase composition of spherical TiC particle and Fe bonding, and the interface is clear, and top layer enhancing distribution of particles is intensive, and the TiC particle is tiny, and size is rounding evenly, is of a size of 1-2 μ m, and combination interface is very smooth, and interface bonding state is good.
As can be seen from Figure 3, diffusion has taken place in TiC particle and steel matrix, the TiC particle is dispersed in the steel matrix, disperse is distributed between the TiC particle Fe as the bonding phase, do not have crackle on the faying face and tear, illustrate that the adhesion between the two is very high, reach the excellent metallurgical combination between the coating on surface and matrix.
The specific embodiment 15: present embodiment ionic medium/self propagating high temperature is synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing 56 parts titanium valve (99.5% or more, 300 orders), 30 parts of iron powders (99.5% or more, 200 orders) and 14 parts of carbon dusts (more than 99.5%) mixing afterwards by ratio of weight and the number of copies respectively and obtain compound; Two, the described compound of step 1 is put into ball grinder, in stainless steel jar mill, add absolute ethyl alcohol (making dispersant) again, the absolute ethyl alcohol consumption is 2/3 of a compound weight, with 240 rev/mins of ball milling 10h of rotating speed, ball material mass ratio is 2.5: 1, and then dry 24h under 50 ℃ of conditions, obtain mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 60% (volume); Four, steel plate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 30 orders palm fibre corundum again, then at surface of steel plate plasma spraying NiCrBSi, the thickness of NiCrBSi is 100 μ m; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi metal substrate, adopt self propagating high temperature to synthesize and obtain metal ceramic coating material at surface of steel plate: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 20s in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 20MPa, pressurize was taken out after 10～20 seconds, putting into sand then in 30 seconds cools off, 24 hours cool times, promptly obtain metal ceramic coating material at surface of steel plate.
Adopt Ceramic Balls ZrO in the present embodiment step two
2Carry out ball milling, the diameter of abrading-ball is 3～10mm.
Present embodiment obtains coating hardness greater than 85HRA, and bond strength is greater than 340MPa.
The specific embodiment 16: present embodiment ionic medium/self propagating high temperature is synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing 52 parts titanium valve (99.5% or more, 300 orders), 35 parts of iron powders (99.5% or more, 200 orders) and 13 parts of carbon dusts (more than 99.5%) mixing afterwards by ratio of weight and the number of copies respectively and obtain compound; Two, the described compound of step 1 is put into ball grinder, in ball grinder, add absolute ethyl alcohol (making dispersant) again, the absolute ethyl alcohol consumption is 2/3 of a compound weight, with 240 rev/mins of ball milling 10h of rotating speed, ball material mass ratio is 2.5: 1, and then dry 24h under 50 ℃ of conditions, obtain mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 55% (volume); Four, steel plate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 40 orders palm fibre corundum again, then at surface of steel plate plasma spraying NiCrBSi, the thickness of NiCrBSi is 200 μ m, and its light plate is a carbon steel; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi steel plate, adopt that self propagating high temperature is synthetic to obtain metal ceramic coating material in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method at surface of steel plate: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 7s by the resistive heater igniting agent that ignites, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12MPa, pressurize was taken out after 10 seconds, putting into sand then in 30 seconds cools off, 24 hours cool times, promptly obtain metal ceramic coating material at surface of steel plate.
Adopt Ceramic Balls ZrO in the present embodiment step two
2Carry out ball milling, the diameter of abrading-ball is 3～10mm.Present embodiment obtains coating hardness greater than 85HRA, and bond strength is greater than 340MPa.
The specific embodiment 17: present embodiment ionic medium/self propagating high temperature is synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing 48 parts titanium valve (99.5% or more, 300 orders), 40 parts of iron powders (99.5% or more, 200 orders) and 12 parts of carbon dusts (more than 99.5%) mixing afterwards by ratio of weight and the number of copies respectively and obtain compound; Two, the described compound of step 1 is put into ball grinder, with 60 rev/mins of ball milling 20h of rotating speed, ball material mass ratio is 2.5: 1, and then dry 24h under 50 ℃ of conditions, obtains mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 55% (volume); Four, steel plate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 40 orders palm fibre corundum again, then at surface of steel plate plasma spraying NiCrBSi, the thickness of NiCrBSi is 150 μ m; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi steel plate, adopt that self propagating high temperature is synthetic to obtain metal ceramic coating material in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method at surface of steel plate: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 7s by the resistive heater igniting agent that ignites, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12MPa, pressurize was taken out after 10 seconds, putting into sand then in 30 seconds cools off, 24 hours cool times, promptly obtain metal ceramic coating material at surface of steel plate.
Adopt stainless steel ball to carry out ball milling in the present embodiment step two, the diameter of abrading-ball is 3～10mm.Present embodiment obtains coating hardness greater than 85HRA, and bond strength is greater than 340MPa.
The specific embodiment 18: present embodiment is made the waste mold steel again, and method is undertaken by following step: one, take by weighing 48 parts titanium valve (more than 99.5%, 300 orders), 40 parts of iron powders (more than 99.5%, 200 orders) and 12 parts of carbon dusts (more than 99.5%) back by ratio of weight and the number of copies respectively and mix and obtain compound; Two, the described compound of step 1 is put into stainless steel jar mill, with 60 rev/mins of ball milling 20h of rotating speed, ball material mass ratio is 2.5: 1, and then dry 24h under 50 ℃ of conditions, obtains mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 55% (volume); Four, with the acetone ultrasonic cleaning of waste mold steel, carry out the sandblast alligatoring with 40 orders palm fibre corundum again, at waste mold steel surface plasma spraying NiCrBSi, the thickness of NiCrBSi is 150 μ m then; Five, the prefabricated blank that step 4 is obtained is placed on the spraying NiCrBSi steel plate, adopt that self propagating high temperature is synthetic to obtain metal ceramic coating material in conjunction with quasi-hot isostatic pressing (SHS/PHIP) method on waste mold steel surface: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 7s by the resistive heater igniting agent that ignites, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12MPa, pressurize was taken out after 10 seconds, putting into sand then in 30 seconds cools off, 24 hours cool times, promptly obtain metal ceramic coating material on waste mold steel surface.
Adopt stainless steel ball to carry out ball milling in the present embodiment step two, the diameter of abrading-ball is 3～10mm.Present embodiment obtains coating hardness greater than 85HRA, and bond strength is greater than 340MPa.
Claims (9)
- Plasma/self propagating high temperature synthetic/quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that plasma/self propagating high temperature synthetic/method that quasi-hot isostatic pressing method technology prepares metal ceramic coating material undertaken by following step: one, take by weighing respectively by ratio of weight and the number of copies to mix behind 48～64 parts titanium valve, 20～40 parts of iron powders and 12～16 parts of carbon dusts and obtain compound; Two, the described compound of step 1 is put into ball grinder, adopt the method for doing mixed or wet mixing to mix, drying obtains mixed powder; Three, the mixed powder that step 2 is obtained is put into stainless steel mould, is pressed into the prefabricated blank that relative density is 50%～60% volume; Four, metal substrate is used the acetone ultrasonic cleaning, carried out the sandblast alligatoring with 16～40 orders palm fibre corundum again, then at metallic substrate surfaces plasma spraying NiCrBSi, wherein metal substrate is a steel plate; Five, the prefabricated blank that step 3 is obtained is placed on the metal substrate of spraying NiCrBSi, adopts self propagating high temperature to synthesize and obtains metal ceramic coating material in conjunction with the quasi-hot isostatic pressing method in metallic substrate surfaces; Self propagating high temperature is synthetic in the described step 5 is undertaken by following step in conjunction with the metallic substrate surfaces acquisition metal ceramic coating material of quasi-hot isostatic pressing method at spraying NiCrBSi: excite prefabricated blank to carry out self propagating high temperature synthetic reaction 7s～20s, immediately the self propagating high temperature synthetic reaction product that still is in the red heat soft state is applied the pressure of 12～20MPa, take out behind pressurize 10～20s, putting into sand then in 30 seconds cools off, 20～30 hours cool times, promptly obtain metal ceramic coating material in metallic substrate surfaces.
- 2. plasma/self propagating high temperature according to claim 1 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that taking by weighing respectively by ratio of weight and the number of copies in the step 1 64 parts titanium valve, 20 parts of iron powders and 16 parts of carbon dusts.
- 3. plasma/self propagating high temperature according to claim 1 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that taking by weighing respectively by ratio of weight and the number of copies in the step 1 56 parts titanium valve, 30 parts of iron powders and 14 parts of carbon dusts.
- 4. plasma/self propagating high temperature according to claim 1 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that taking by weighing respectively by ratio of weight and the number of copies in the step 1 52 parts titanium valve, 35 parts of iron powders and 13 parts of carbon dusts.
- 5. plasma/self propagating high temperature according to claim 1 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that taking by weighing respectively by ratio of weight and the number of copies in the step 1 48 parts titanium valve, 40 parts of iron powders and 12 parts of carbon dusts.
- 6. plasma/self propagating high temperature according to claim 1 is synthetic/quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that 50 ℃～60 ℃ of the temperature of the described drying of step 2, described drying time 24h～48h.
- According to claim 1,2,3,4,5 or 6 described plasma/self propagating high temperatures synthetic/quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that the thickness of step 4 ionic medium spraying NiCrBSi is 50 μ m～500 μ m.
- 8. plasma/self propagating high temperature according to claim 7 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that described do to mix of step 2 undertaken by following operation: with 40～60 rev/mins of ball milling 24～30h of rotating speed, ball material mass ratio is 2～5: 1.
- 9. plasma/self propagating high temperature according to claim 7 is synthetic/and quasi-hot isostatic pressing method technology prepares the method for metal ceramic coating material, it is characterized in that the described wet mixing of step 2 undertaken by following operation: the described compound of step 1 is put into ball grinder, in ball grinder, add absolute ethyl alcohol again, the absolute ethyl alcohol consumption is 2/3～3/4 of a compound weight, with 200～300 rev/mins of ball milling 24～30h of rotating speed, ball material mass ratio is 1～3: 1.
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| CN101462879A (en) * | 2009-01-08 | 2009-06-24 | 江阴东大新材料研究院 | Method for forming ceramic coat on metallic surface by argon-arc welding assisted self-propagating |
| CN101579958B (en) * | 2009-06-29 | 2013-03-20 | 中国科学院等离子体物理研究所 | Steel-based multifunctional ceramic composite coating and preparation method thereof |
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2010
- 2010-05-18 CN CN2010101752801A patent/CN101869985B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825585A (en) * | 2016-11-15 | 2017-06-13 | 上海电机学院 | Electric discharge quick consolidation method and device that a kind of titanium chip circulation is remanufactured |
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| CN101869985A (en) | 2010-10-27 |
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