CN102978609A - Method for combustion synthesis of aluminum oxide ceramic-metal composite coating on surface of carbon steel - Google Patents
Method for combustion synthesis of aluminum oxide ceramic-metal composite coating on surface of carbon steel Download PDFInfo
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- CN102978609A CN102978609A CN2012105610404A CN201210561040A CN102978609A CN 102978609 A CN102978609 A CN 102978609A CN 2012105610404 A CN2012105610404 A CN 2012105610404A CN 201210561040 A CN201210561040 A CN 201210561040A CN 102978609 A CN102978609 A CN 102978609A
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Abstract
The invention relates to a method for combustion synthesis of an aluminum oxide ceramic-metal composite coating on the surface of carbon steel. The method comprises the following steps: sandblasting and removing surface scale of a carbon steel substrate; successively coating powder of a transitional layer and a working layer with a certain thickness and composition proportion on the surface of the carbon steel substrate; insulating a magnesium rod; then, placing the coated carbon steel sample in a crucible; paving quartz sand around; and finally placing the crucible in a well heating furnace and heating to a certain temperature, and igniting the magnesium rod to react. The aluminum oxide ceramic-metal composite coating on the surface of carbon steel formed by combustion synthesis provided by the invention is level in surface and low in porosity. The microhardness reaches 1200-2450HV0.2, the diffusion distance from the coating to elements at a carbon steel substrate interface reaches 30 microns, metallurgical bonding is formed, and the bonding performance is excellent. The coating has an excellent anti-wear performance and corrosion resistance. The method provided by the invention can be widely applied to preparing a large area corrosion-resisting and anti-wear coating of the carbon steel substrate, and the long-acting corrosion-resisting and anti-wear performance of a mechanical part can be remarkably improved.
Description
Technical field
The present invention relates to a kind of method at steel surface burning borolon ceramic-metal compound coating, belong to Materials Processing Engineering specialized material surface strengthening field.Mainly for the preparation of metallic element surface abrasion resistance, anti-corrosion coating, can be applicable to the fields such as engineering machinery, mining machinery.
Background technology
A large amount of metallic elements such as engineering machinery, mining machinery are bearing serious abrasive wear, and maintenance workload is large, and loss is serious.Al
2O
3Pottery has excellent wear resisting property, at metallic element surface preparation one deck Al
2O
3The wear-resisting compound coating of ceramic/metal can significantly prolong work-ing life of metallic element.Yet traditional sufacing is not suitable for the Al that reaches 3-12mm at metallic element surface preparation thickness
2O
3The ceramic/metal compound coating.Self propagating high temperature is synthetic not only can to synthesize required stupalith, but also can directly prepare coating, but at present successful application only limits to prepare ceramic-lined steel pipe, major cause is that physical and chemical performance and the steel matrix of self-propagating high-temperature synthesize ceramic coating exists very large difference, mainly be mechanical bond from spreading synthesize ceramic coating and steel matrix, bonding strength is low, is seriously restricting the application of self-propagating high-temperature synthesize ceramic coating.
Summary of the invention
The present invention has prepared the Al that is metallurgical binding with steel matrix by the design to coating structure and coated material
2O
3The ceramic-metal composite material coating is for preparation metallic element surface wearable coating opens up a new way.
The object of the present invention is to provide a kind of method at steel surface burning borolon ceramic-metal compound coating.
The objective of the invention is to realize by following technical scheme:
A kind of method at steel surface burning borolon ceramic-metal compound coating is characterized in that the synthetic method step is as follows:
(1) selects the Q235 plain steel, remove the oxide skin on plain steel surface with blasting method, make plain steel be the metal true qualities;
(2) by mole% the transition layer powder that takes by weighing 50%-62%NiO, 38%-50%Al, and in ball mill, use alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(3) by mole% taking by weighing 60-75%Al, 15%-25%Fe
2O
3, 6.5%-15%Cr
2O
3The working lining powder, and in ball mill with alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(4) the paste transition layer powder brushing that step (2) is obtained is on the plain steel surface, and brushing thickness is 1-3mm, and the paste working lining powder brushing that again step (3) is obtained is on the transition layer powder, and brushing thickness is 5-15mm;
(5) will be coated with the carbon steel sample that brushes and be placed in the pit furnace, plug the igniting magnesium rod at the working lining powder, around carbon steel sample, spread quartz sand;
(6) with the pit furnace energising, when being warming up to 400-500 ℃, light magnesium rod, cause the synthetic system reaction, after the system reaction finishes, namely form Al on Q235 plain steel surface
2O
3The ceramic-metal compound coating;
(7) close the pit furnace power supply, when treating that furnace temperature is down to room temperature, take out sample.
Described method at steel surface burning borolon ceramic-metal compound coating, the thickness that it is characterized in that described alumina-ceramic-metal composite coating is 6-12mm, the composition of compound coating is Al
2O
3, Fe, Cr and FeAl
2O
4, porosity is low, and hardness reaches 1200-2450HV
0.2
Beneficial effect of the present invention:
Adopt combustion synthesis technology, successfully synthesize alumina-ceramic-metal composite coating at steel surface, the bilayer structure of transition layer and working lining is reasonable in design, and composition proportion is suitable, obtained on the plain steel surface one deck smooth, fine and close, be combined good Al with matrix
2O
3The ceramic-metal compound coating; Coating structure is even, compact structure, and porosity is low, and microhardness reaches 1200-2450HV
0.2, wear resisting property is good, and coating and plain steel form effective metallurgical binding.
Description of drawings
The Al of accompanying drawing 1: embodiment 1 preparation
2O
3Ceramic-metal compound coating device synoptic diagram
The Al of accompanying drawing 2: embodiment 1 preparation
2O
3The X ray diffracting spectrum of ceramic-metal compound coating
The Al of accompanying drawing 3: embodiment 1 preparation
2O
3Ceramic-metal compound coating macro morphology
The Al of accompanying drawing 4: embodiment 1 preparation
2O
3Ceramic-metal compound coating Cross Section Morphology
The Al of accompanying drawing 5: embodiment 1 preparation
2O
3Ceramic-metal compound coating section hardness distribution plan
The Al of accompanying drawing 6: embodiment 2 preparations
2O
3Ceramic-metal compound coating Cross Section Morphology
The Al of accompanying drawing 7: embodiment 3 preparations
2O
3Ceramic-metal compound coating Cross Section Morphology
Reference numeral:
1-base, 2-plumbago crucible, 3-quartz sand, 4-igniting magnesium rod, 5-work coating, 6-transition layer, 7-plain steel, 8-pit furnace.
Embodiment
Embodiment 1: a kind of method at steel surface burning borolon ceramic-metal compound coating, and its synthetic method step is as follows:
(1) selecting long * wide * high (thick) is the Q235 plain steel of 50 ㎜ * 25 ㎜ * 4 ㎜, removes the oxide skin on plain steel surface with blasting method, makes plain steel be the metal true qualities;
(2) by mole% the transition layer powder that takes by weighing 60.00%NiO and 40.00%Al, and in ball mill, use alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(3) by mole% taking by weighing 67.74%Al, 19.35%Fe
2O
3, 12.90%Cr
2O
3The working lining powder, and in ball mill with alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(4) the paste transition layer powder brushing that step (2) is obtained is on the plain steel surface, and brushing thickness is 2mm, and the paste working lining powder brushing that again step (3) is obtained is on the transition layer powder, and brushing thickness is 10mm;
(5) will be coated with the carbon steel sample that brushes and be placed in the pit furnace, plug the igniting magnesium rod at the working lining powder, around carbon steel sample, spread quartz sand;
(6) with the pit furnace energising, when being warming up to 500 ℃, light magnesium rod, cause the synthetic system reaction, after the system reaction finishes, namely form Al on Q235 plain steel surface
2O
3The ceramic-metal compound coating;
(7) close the pit furnace power supply, when treating that furnace temperature is down to room temperature, take out sample.
The experimental installation synoptic diagram of the ceramic-metal compound coating of embodiment 1 preparation is seen Fig. 1.
On Q235 carbon steel (7-) matrix, successively be coated with and brush transition layer powder (6-) and working lining powder (5-), plug igniting magnesium rod (4-) at the working lining powder, this carbon steel sample is put into the plumbago crucible (2-) of diameter of phi 80mm, around it, spread quartz sand (3-), in pit furnace (8-), place the refractory brick base (1-) of a 100*100*80mm, at last plumbago crucible is placed on the base.
The XRD of the ceramic-metal compound coating of embodiment 1 preparation analyzes and sees Fig. 2.Analyze from spectrogram and can get, coating is by Fe, Cr, Al
2O
3Form with the phase such as Ni.By equation (1) (2) (3) as can be known, Fe, Cr, Al
2O
3With Ni all be reaction product, do not have unreacted original phase to occur, illustrate and reacts very complete.
Fe
2O
3+2Al→Al
2O
3+2Fe （1）
Cr
2O
3+2Al→Al
2O
3+2Cr （2）
3NiO+2Al→Al
2O
3+3Ni （3）
The macro morphology of the ceramic-metal compound coating of embodiment 1 preparation as shown in Figure 3.As seen from the figure, coating surperficial continuous, smooth do not have obvious hollow, hole do not occur yet, has isolated metal phase particles in the coating.
The Cross Section Morphology figure of the ceramic-metal compound coating of embodiment 1 preparation as shown in Figure 4.As seen from the figure, coating structure is even, and compact structure only has a small amount of black hole to be present among the coating.Coating is combined with matrix well, the crack do not occur at the interface.By linescan as can be known, the interface element diffusion has obviously reached 30 μ m, illustrates that the interface microcell has formed metallurgical binding.
The ceramic-metal compound coating thickness of embodiment 1 preparation is 9.5mm, and the section hardness of coating distributes and sees and be 1200-2450HV by Fig. 5
0.2
Embodiment 2: a kind of method at steel surface burning borolon ceramic-metal compound coating, and its synthetic method step is as follows:
(1) selecting long * wide * high (thick) is the Q235 plain steel of 50 ㎜ * 25 ㎜ * 4 ㎜, removes the oxide skin on plain steel surface with blasting method, makes plain steel be the metal true qualities;
(2) by mole% the transition layer powder that takes by weighing 54.55%NiO and 45.45%Al, and in ball mill, use alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(3) by mole% taking by weighing 67.74%Al, 22.58%Fe
2O
3, 9.68%Cr
2O
3The working lining powder, and in ball mill with alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(4) with the paste transition layer powder brushing in the step (2) on plain steel surface, brushing thickness is 1mm, again with the paste working lining powder brushing in the step (3) on the transition layer powder, brushing thickness is 13mm;
(5) will be coated with the carbon steel sample that brushes and be placed in the pit furnace, plug igniting at the working lining powder, with spreading quartz sand around the magnesium rod sample;
(6) with the pit furnace energising, when being warming up to 400 ℃, light magnesium rod, cause the reaction of burning synthetic system, after the system reaction finishes, namely form Al on Q235 plain steel surface
2O
3The ceramic-metal compound coating;
(7) close the pit furnace power supply, when treating that furnace temperature is down to room temperature, take out sample.
Ceramic-metal compound coating Cross Section Morphology such as Fig. 6 of embodiment 2 preparations.As seen from the figure, coating structure is fine and close, hole or space do not occur, organizes more even.Coating and plain steel at the interface bonding state are good.Synthetic Al
2O
3Ceramic-metal compound coating thickness is 11mm, and the section hardness of coating is 1200-2300HV
0.2
Embodiment 3: a kind of method at steel surface burning borolon ceramic-metal compound coating, and its synthetic method step is as follows:
(1) selecting long * wide * high (thick) is the Q235 plain steel of 50 ㎜ * 25 ㎜ * 4 ㎜, removes the oxide skin on plain steel surface with blasting method, makes plain steel be the metal true qualities;
(2) by mole% the transition layer powder that takes by weighing 50.00%NiO and 50.00%Al, and in ball mill, use alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(3) by mole% taking by weighing 71.43%Al, 17.14%Fe
2O
3, 11.43%Cr
2O
3The working lining powder, and in ball mill with alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(4) with the paste transition layer powder brushing in the step (2) on plain steel surface, brushing thickness is 3mm, again with the paste working lining powder brushing in the step (3) on the transition layer powder, brushing thickness is 8mm;
(5) will be coated with the carbon steel sample that brushes and be placed in the pit furnace, plug the igniting magnesium rod at the working lining powder, spread quartz sand around the sample;
(6) with the pit furnace energising, when being warming up to 400-500 ℃, light magnesium rod, cause the reaction of burning synthetic system, after the system reaction finishes, namely form Al on Q235 plain steel surface
2O
3The ceramic-metal compound coating;
(7) close the pit furnace power supply, when treating that furnace temperature is down to room temperature, take out sample.
Ceramic-metal compound coating Cross Section Morphology such as Fig. 7 of embodiment 3 preparations.As seen from the figure, coating is combined very good with matrix, any crack or hole do not occur at the interface, and coating structure is more even.Synthetic Al
2O
3Ceramic-metal compound coating thickness is 8mm, the section hardness 1200-2250HV of coating
0.2.
Claims (2)
1. method at steel surface burning borolon ceramic-metal compound coating is characterized in that the synthetic method step is as follows:
(1) selects the Q235 plain steel, remove the oxide skin on plain steel surface with blasting method, make plain steel be the metal true qualities;
(2) by mole% the transition layer powder that takes by weighing 50%-62%NiO, 38%-50%Al, and in ball mill, use alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(3) by mole% taking by weighing 60-75%Al, 15%-25%Fe
2O
3, 6.5%-15%Cr
2O
3The working lining powder, and in ball mill with alcohol wet mixing 5 hours, evenly, become paste, stand-by;
(4) with the paste transition layer powder brushing in the step (2) on plain steel surface, brushing thickness is 1-3mm, again with the paste working lining powder brushing in the step (3) on the transition layer powder, brushing thickness is 5-15mm;
(5) will be coated with the carbon steel sample that brushes and be placed in the pit furnace, spread quartz sand around the sample, plug the igniting magnesium rod at the working lining powder;
(6) with the pit furnace energising, when being warming up to 400-500 ℃, light magnesium rod, cause the reaction of burning synthetic system, after the system reaction finishes, namely form Al on Q235 plain steel surface
2O
3The ceramic-metal compound coating;
(7) close the pit furnace power supply, when treating that furnace temperature is down to room temperature, take out sample.
2. the method at steel surface burning borolon ceramic-metal compound coating according to claim 1, the thickness that it is characterized in that described alumina-ceramic-metal composite coating is 6-12mm, the composition of compound coating is Al
2O
3, Fe, Cr and FeAl
2O
4, porosity is low, and hardness reaches 1200-2450HV
0.2
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469200A (en) * | 2013-09-26 | 2013-12-25 | 重庆市科学技术研究院 | Method for preparing nanometer surface coating |
| CN105463358A (en) * | 2015-12-01 | 2016-04-06 | 南通大学 | Method for preparing wear-resisting coating on steel plate |
| CN111850551A (en) * | 2020-08-21 | 2020-10-30 | 江苏科环新材料有限公司 | High-temperature-resistant and abrasion-resistant pushing plate of garbage incinerator and preparation method thereof |
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| CN1113303A (en) * | 1995-03-24 | 1995-12-13 | 北京工业大学 | Porous ceramic lining-tube and its production method |
| CN101113487A (en) * | 2007-09-04 | 2008-01-30 | 广州市锐优表面科技有限公司 | Annealing furnace roller surface peening coating and method for making same |
| EP2045350A2 (en) * | 2007-10-04 | 2009-04-08 | BPE International Dr. Hornig GmbH | Method for manufacturing a coating of MMC und component thereof |
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Patent Citations (5)
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| JPS56150190A (en) * | 1980-01-16 | 1981-11-20 | Agency Of Ind Science & Technol | Preparation of composite material by thermite reaction |
| CN1113303A (en) * | 1995-03-24 | 1995-12-13 | 北京工业大学 | Porous ceramic lining-tube and its production method |
| CN101113487A (en) * | 2007-09-04 | 2008-01-30 | 广州市锐优表面科技有限公司 | Annealing furnace roller surface peening coating and method for making same |
| EP2045350A2 (en) * | 2007-10-04 | 2009-04-08 | BPE International Dr. Hornig GmbH | Method for manufacturing a coating of MMC und component thereof |
| CN101935818A (en) * | 2010-09-09 | 2011-01-05 | 北京理工大学 | Functionally gradient coating of rotor vane |
Non-Patent Citations (1)
| Title |
|---|
| 李吉春，王泽华，周泽华，等: "Al－Fe2O3－Cr2O3体系SHS制备Al2O3陶瓷复合涂层的研究", 《粉末冶金工业》, 31 December 2011 (2011-12-31), pages 34 - 38 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469200A (en) * | 2013-09-26 | 2013-12-25 | 重庆市科学技术研究院 | Method for preparing nanometer surface coating |
| CN103469200B (en) * | 2013-09-26 | 2015-11-04 | 重庆市科学技术研究院 | A kind of method preparing nanocoating |
| CN105463358A (en) * | 2015-12-01 | 2016-04-06 | 南通大学 | Method for preparing wear-resisting coating on steel plate |
| CN105463358B (en) * | 2015-12-01 | 2018-09-14 | 南通大学 | A method of preparing wear-resistant coating on the steel plate |
| CN111850551A (en) * | 2020-08-21 | 2020-10-30 | 江苏科环新材料有限公司 | High-temperature-resistant and abrasion-resistant pushing plate of garbage incinerator and preparation method thereof |
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Application publication date: 20130320 |