CN108118336B - A kind of method of plasma alloying carbide enhancing high entropy alloy coating - Google Patents
A kind of method of plasma alloying carbide enhancing high entropy alloy coating Download PDFInfo
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- CN108118336B CN108118336B CN201810008864.6A CN201810008864A CN108118336B CN 108118336 B CN108118336 B CN 108118336B CN 201810008864 A CN201810008864 A CN 201810008864A CN 108118336 B CN108118336 B CN 108118336B
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- 238000005275 alloying Methods 0.000 title claims abstract description 32
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 28
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000011812 mixed powder Substances 0.000 claims abstract description 26
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052786 argon Inorganic materials 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000000498 ball milling Methods 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 18
- 229910000048 titanium hydride Inorganic materials 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 16
- 239000004615 ingredient Substances 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 244000137852 Petrea volubilis Species 0.000 claims description 5
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
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- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- B22F1/0003—
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention discloses a kind of methods of plasma alloying carbide enhancing high entropy alloy coating, heat alloying a certain proportion of Fe-Cr-B-Si, Ni-Cr-B-Si, TiH in the case where aluminum alloy surface is using the protection of plasma beam argon gas2The mixed-powder of composition forms wear-resistant coating after high-temperature alloy and rapid cooling, and with the hesitation of high-entropy alloy in alloying process, come into being Cr7C3Have the characteristics that crystal grain is tiny, finally forms in aluminum alloy surface by Cr7C3The high entropy alloy coating of the AlCrFeNiTi of enhancing.
Description
Technical field
The invention belongs to high energy beam field of surface treatment, the in particular to side of the wear-resisting composite coating of aluminum alloy surface alloying
Method.
Background technique
Aluminium alloy is widely applied because its density is small, intensity is high, corrosion resistance is good and processing performance is good etc., but its
Hardness is low, the disadvantages of wearing no resistance limits its use scope, and the superficial layer for preparing reinforcing is the one kind for improving its wearability
Effective way.High-entropy alloy is the element by five kinds or more according to equal atomic ratios or close to the alloy of equal atomic ratio alloys,
With the incomparable very good mechanical properties of some conventional alloys, such as high intensity, high rigidity, high tenacity, high abrasion, corrosion-resistant
Property etc., it has also become in one new research hotspot of material science.But the preparation of high entropy alloy coating uses elemental gold mostly at present
Belong to powder, such as Ni(1455 DEG C of part of elemental metals powder), Cr(1855 DEG C) fusing point it is high, therefore it is thin and uneven to often result in coating
Even disadvantage.Plasma beam is a kind of high energy beam of arc energy high concentration low cost, by by electric arc mechanical compression, arc column
Temperature has certain " excavation " to act on up to 10000-24000K, and to matrix, is conducive to the homogenization of coating composition, but
Melt portions matrix meeting Dilute Alloy powdered ingredients, and usually turn its institutional framework by adding Al element in high-entropy alloy
Become body-centered cubic structure, Lai Tigao hardness and wearability.In addition, giving alloying band since the aluminium in aluminium alloy easily aoxidizes
Carry out certain difficulty, by adding suitable TiH2It is set to discharge H in real time2To avoid oxidation, meanwhile, also using plasma alloying
There is the protection of Ar gas, since anoxic avoids H2Explosion, it also requires taking away in time to prevent from mixing with air explosion.
Summary of the invention
Problem to be solved by this invention is due to having aluminium easily oxygen using in aluminum alloy surface alloying high-entropy alloy
The shortcomings that fusing point of change and aluminium alloy is low, and high-entropy alloy fusing point height is not easy alloying, using Ar gas, TiH2Release H in real time2With
Protective coating carries out alloying.
It includes following processing steps that the present invention, which solves production method used by its technical problem:
Step 1: choosing using the aluminium alloy that need to strengthen as matrix, the surface to be fortified of part is pre-processed, sand is used
Wheel or sand paper are polished the surface derustings of components to be processed, and the greasy dirt of component surface is removed with alcohol or acetone；
Step 2: by Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2Mixed-powder is formed by a certain percentage, and uses ball mill
Ball milling mixing is carried out, powder diameter used is at 30-220 μm, and wherein the mass percent of Ni-Cr-B-Si ingredient is Cr:14 ~ 17,
B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Ni；The mass percent of Fe-Cr-B-Si ingredient is Cr:14 ~ 17, B:
2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Fe； TiH2The purity of powder is higher than 99%；Mixed powder Fe-Cr-B-Si, Ni-
Cr-B-Si、TiH2Mass percent are as follows: 40 ~ 45:40 ~ 45:10 ~ 20.Ball-milling technology: the ball milling mixing is using steel
Ball grinder processed carries out ball milling mixing, and abrading-ball and metal powder mass ratio are 3 ~ 4.5: 1, and vacuum valve is opened after sealing and vacuumizes 20 ~ 30
Minute, ball grinder is put into planetary ball mill, revolving speed is 260 ~ 300 r/min, swings to 30 ~ 45 Hz of frequency, carries out ball milling
Mixing time is 60 ~ 80 minutes.
Mixed powder is made Step 3: mixed powder and pressure sensitive adhesive are mixed in a certain ratio, is coated to alloy matrix aluminum
Surface, with a thickness of 2-5mm, width 7-9mm, in 120~140 DEG C of 1.5~2h of drying.Using plasma beam to mixed powder heat into
Row alloying is wear-resistant coating after cooling.Technological parameter setting are as follows: argon gas is as protection gas and ionized gas, alloying ginseng
Number electric current is 90-150 A, and operating voltage 20-40 V, scanning speed is 3-6 mm/s.It is needed in alloying process using gas
It covers the H of decomposition2It takes away in time.Gas hood power is 0.5 ~ 1.5kW.
The beneficial effects of the present invention are:
(1) process of the invention uses matrix of the high-entropy alloy as wear-resistant coating, and it is peculiar to can make full use of its
Diffusion velocity is slow, the characteristic insensitive to composition transfer, make coating that there is higher toughness, intensity, wearability.
(2) present invention uses original common Ni-Cr-B-Si, Fe-Cr-B-Si metal of alloying powder, has fusing point
It is low, ingredient is uniform, and advantage at low cost.
(3) reinforced phase of the present invention mainly has (Cr, Fe)7C3Kind, due to the intrinsic sluggish diffusion effect of high-entropy alloy, make
It obtains in alloying process and comes into being (Cr, Fe)7C3Size reduction, the TiH for being conducive to the raising of wearability, and adding2Can have
Effect avoids the oxidation of aluminium alloy.
Specific embodiment
The present invention is further described With reference to embodiment.
Embodiment 1:
Step 1: choosing 2A11 aluminium alloy as matrix, its surface to be fortified is pre-processed, is beaten with grinding wheel or sand paper
The surface derusting for grinding components to be processed removes the greasy dirt of component surface with alcohol or acetone；
Step 2: by Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2Mixed-powder is formed by a certain percentage, and uses ball mill
Carry out ball milling mixing, powder diameter used at 100-220 μm, wherein the mass percent of Ni-Cr-B-Si ingredient be Cr:14 ~
17, B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Ni；The mass percent of Fe-Cr-B-Si ingredient be Cr:14 ~
17, B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Fe； TiH2The purity of powder is higher than 99%；Mixed powder Fe-Cr-B-
Si、Ni-Cr-B-Si、TiH2Mass percent are as follows: 40:40:20.Ball-milling technology: the ball milling mixing is using steel ball
Grinding jar carries out ball milling mixing, and abrading-ball and metal powder mass ratio are 4.5: 1, and vacuum valve is opened after sealing and is vacuumized 30 minutes, by ball
Grinding jar is put into planetary ball mill, and revolving speed is 260 r/min, swings to frequency 30Hz, and carrying out the ball mill mixing time is 60 minutes.
Mixed powder is made Step 3: mixed powder and pressure sensitive adhesive are mixed in a certain ratio, is coated to alloy matrix aluminum
Surface, with a thickness of 2mm, width 7mm, in 120 DEG C of drying 1.5h.Mixed powder is heated using plasma beam and carries out alloying, it is cold
It but is afterwards wear-resistant coating.Technological parameter setting are as follows: for argon gas as protection gas and ionized gas, alloying parameter electric current is 90
A, operating voltage 25V, scanning speed are 4.5 mm/s.It needs to use gas hood by the H of decomposition in alloying process2It takes out in time
It walks.Gas hood power is 1kW.
The result shows that foring in aluminum alloy surface by Cr7C3The high entropy alloy coating of the AlCrFeNiTi of enhancing, coating
Basic flawless, pore-free, with a thickness of 350 μm.Metallurgical bonding is formd with matrix, improves 6.7 times of wearability.
Embodiment 2:
Step 1: choosing 2A12 aluminium alloy as matrix, its surface to be fortified is pre-processed, is beaten with grinding wheel or sand paper
The surface derusting for grinding components to be processed removes the greasy dirt of component surface with alcohol or acetone；
Step 2: by Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2Mixed-powder is formed by a certain percentage, and uses ball mill
Ball milling mixing is carried out, powder diameter used is at 50-170 μm, and wherein the mass percent of Ni-Cr-B-Si ingredient is Cr:14 ~ 17,
B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Ni；The mass percent of Fe-Cr-B-Si ingredient is Cr:14 ~ 17, B:
2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Fe； TiH2The purity of powder is higher than 99%；Mixed powder Fe-Cr-B-Si, Ni-
Cr-B-Si、TiH2Mass percent are as follows: 45:45:10.Ball-milling technology: the ball milling mixing be using steel ball grinder into
Row ball milling mixing, abrading-ball and metal powder mass ratio are 3: 1, and vacuum valve is opened after sealing and is vacuumized 20 minutes, ball grinder is put into
Planetary ball mill, revolving speed are 260 r/min, swing to 30 Hz of frequency, and carrying out the ball mill mixing time is 60 minutes.
Mixed powder is made Step 3: mixed powder and pressure sensitive adhesive are mixed in a certain ratio, is coated to alloy matrix aluminum
Surface, with a thickness of 5mm, width 9mm, in 120 DEG C of drying 2h.Mixed powder is heated using plasma beam and carries out alloying, it is cooling
It is afterwards wear-resistant coating.Technological parameter setting are as follows: for argon gas as protection gas and ionized gas, alloying parameter electric current is 150 A,
40 V of operating voltage, scanning speed are 3 mm/s.It needs to use gas hood by the H of decomposition in alloying process2It takes away in time.Gas
Cover power is 1.5kW.
The result shows that foring in aluminum alloy surface by Cr7C3The high entropy alloy coating of the AlCrFeNiTi of enhancing, coating
Basic flawless, pore-free, with a thickness of 450 μm.Metallurgical bonding is formd with matrix, improves 7.2 times of wearability.
Embodiment 3:
Step 1: choosing 5A02 aluminium alloy as matrix, its surface to be fortified is pre-processed, is beaten with grinding wheel or sand paper
The surface derusting for grinding components to be processed removes the greasy dirt of component surface with alcohol or acetone；
Step 2: by Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2Mixed-powder is formed by a certain percentage, and uses ball mill
Ball milling mixing is carried out, powder diameter used is at 30-220 μm, and wherein the mass percent of Ni-Cr-B-Si ingredient is Cr:14 ~ 17,
B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Ni；The mass percent of Fe-Cr-B-Si ingredient is Cr:14 ~ 17, B:
2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Fe； TiH2The purity of powder is higher than 99%；Mixed powder Fe-Cr-B-Si, Ni-
Cr-B-Si、TiH2Mass percent are as follows: 45:40:15.Ball-milling technology: the ball milling mixing be using steel ball grinder into
Row ball milling mixing, abrading-ball and metal powder mass ratio are 3: 1, and vacuum valve is opened after sealing and is vacuumized 25 minutes, ball grinder is put into
Planetary ball mill, revolving speed 280r/min swing to frequency 30Hz, and carrying out the ball mill mixing time is 70 minutes.
Mixed powder is made Step 3: mixed powder and pressure sensitive adhesive are mixed in a certain ratio, is coated to alloy matrix aluminum
Surface, with a thickness of 3mm, width 8mm, in 140 DEG C of drying 2h.Mixed powder is heated using plasma beam and carries out alloying, it is cooling
It is afterwards wear-resistant coating.Technological parameter setting are as follows: for argon gas as protection gas and ionized gas, alloying parameter electric current is 120 A,
30 V of operating voltage, scanning speed are 3 mm/s.It needs to use gas hood by the H of decomposition in alloying process2It takes away in time.Gas
Cover power is 0.5kW.
The result shows that foring in aluminum alloy surface by Cr7C3The high entropy alloy coating of the AlCrFeNiTi of enhancing, coating
Basic flawless, pore-free, with a thickness of 480 μm.Metallurgical bonding is formd with matrix, improves 8.2 times of wearability.
Claims (4)
1. a kind of method of plasma alloying carbide enhancing high entropy alloy coating, which is characterized in that the production method
Including following processing steps:
Step 1: choosing using the aluminium alloy that need to strengthen as matrix, the surface to be fortified of part is pre-processed, with grinding wheel or
Sand paper is polished the surface derustings of components to be processed, and the greasy dirt of component surface is removed with alcohol or acetone；
Step 2: by Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2Form mixed-powder by a certain percentage, wherein Ni-Cr-B-Si at
The mass percent divided is Cr:14 ~ 17, B:2.5 ~ 4.5, Si:3 ~ 4.5, and C:0.6 ~ 1.0, remaining is Ni；Fe-Cr-B-Si ingredient
Mass percent be Cr:14 ~ 17, B:2.5 ~ 4.5, Si:3 ~ 4.5, C:0.6 ~ 1.0, remaining is Fe；TiH2The purity of powder is higher than
99%；The mass percent of mixed powder Fe-Cr-B-Si, Ni-Cr-B-Si, TiH2 are as follows: 40 ~ 45:40 ~ 45:10 ~ 20；And use ball milling
Machine carries out ball milling mixing, and powder diameter used is at 30-220 μm；
Mixed powder is made Step 3: mixed powder and pressure sensitive adhesive are mixed in a certain ratio, is coated to aluminium alloy matrix surface,
It is dried with a thickness of 2-5mm, width 7-9mm；
Carry out alloying Step 4: heating using plasma beam to mixed powder, technological parameter: argon gas is as protection gas and ionization gas
Body, alloying parameter electric current are 90-150 A, and operating voltage 20-40 V, scanning speed is 3-6 mm/s；In alloying process
It needs to use gas hood by the H of decomposition2It takes away in time, is wear-resistant coating after cooling.
2. a kind of method of plasma alloying carbide enhancing high entropy alloy coating according to claim 1, feature
Be: the ball milling mixing is that ball milling mixing is carried out using steel ball grinder, abrading-ball therein and metal powder mass ratio be 3 ~
4.5: 1, vacuum valve to be opened after sealing and is vacuumized 20 ~ 30 minutes, and ball grinder is put into planetary ball mill, revolving speed is 260 ~
300r/min swings to 30 ~ 45 Hz of frequency, and carrying out the ball mill mixing time is 60 ~ 80 minutes.
3. a kind of method of plasma alloying carbide enhancing high entropy alloy coating according to claim 1, feature
It is: the stoving process are as follows: in 120~140 DEG C of 1.5~2h of drying.
4. a kind of method of plasma alloying carbide enhancing high entropy alloy coating according to claim 1, feature
Be: the gas hood power is 0.5 ~ 1.5kW.
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| CN103817610A (en) * | 2014-03-17 | 2014-05-28 | 中原工学院 | Manufacturing method of single-layer brazing diamond grinding wheel |
| CN104831226A (en) * | 2015-04-21 | 2015-08-12 | 吉林大学 | Plasma spray welding gas-solid reaction in-situ generated nitride enhanced wear-resisting layer and process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103817610A (en) * | 2014-03-17 | 2014-05-28 | 中原工学院 | Manufacturing method of single-layer brazing diamond grinding wheel |
| CN104831226A (en) * | 2015-04-21 | 2015-08-12 | 吉林大学 | Plasma spray welding gas-solid reaction in-situ generated nitride enhanced wear-resisting layer and process |
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Effective date of registration: 20230725 Address after: Room 101, Unit 4, Floor 1, Building 2, No. 20, Yong'an Road, Shilong Economic Development Zone, Mentougou District, Beijing 102300- CZB050 Patentee after: BEIJING FURUI KESEN THERMAL SPRAYING TECHNOLOGY CO.,LTD. Address before: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. |