CN106894014B - A kind of activity Argon arc cladding high entropy alloy coating and preparation method thereof - Google Patents

A kind of activity Argon arc cladding high entropy alloy coating and preparation method thereof Download PDF

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CN106894014B
CN106894014B CN201710108002.6A CN201710108002A CN106894014B CN 106894014 B CN106894014 B CN 106894014B CN 201710108002 A CN201710108002 A CN 201710108002A CN 106894014 B CN106894014 B CN 106894014B
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coating
entropy alloy
matrix
argon arc
high entropy
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CN106894014A (en
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董世知
马壮
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Liaoning Technical University
Liaoning Institute of Science and Technology
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Liaoning Technical University
Liaoning Institute of Science and Technology
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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
    • C23C24/106—Coating with metal alloys or metal elements only
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper

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Abstract

The invention discloses a kind of active Argon arc cladding high entropy alloy coatings and preparation method thereof, belong to alloy coat and its preparation technical field.The preparation method is using rolling state Q235A steel as basis material, and using coal associated resources flyash as activating agent, active Argon arc cladding high entropy alloy coating Fe has been prepared in Argon arc cladding methodxAlCrCuCoTi0.4(x=0,1).The institutional framework of the coating is by BCC phase and FCC phase composition.Wherein, Fe1AlCrCuCoTi0.4It is in metallurgical bonding between high entropy alloy coating and matrix, microhardness is up to 495.6HV0.2, material surface hardness, wearability are improved, needs of production is met, and promotes extensive use of the active Argon arc cladding high entropy alloy coating on the surface of the material in engineering.

Description

A kind of activity Argon arc cladding high entropy alloy coating and preparation method thereof
Technical field
The invention belongs to alloy coat and its preparation technical fields, specifically, referring to a kind of high entropy of active Argon arc cladding Alloy coat and preparation method thereof.
Background technique
With the rapid development of science and technology, the research in Material Field in terms of new material has become the new direction of people's research. Therefore, composite material is because its excellent properties are as research hotspot, and passes through and apply additional, the various nitrogen of in-situ preparation The composite material that the method for compound, carbide, oxide, boride etc. is prepared successfully has been applied in industry and actual production In.The height that Ye Junwei etc. (Ye Junwei high-irregularity multi-element alloy: CN, CN1353204 [P] .2002) is proposed in the 1990s Entropy alloy, the performances such as the higher intensity having by it, wearability, corrosion resistance and high temperature resistant softening are concerned.High entropy closes Gold is multi-principal high-entropy alloy, and also known as more high randomness alloys of pivot are alloy (the pivot numbers using multiple element as pivot N >=5), the atomic percent of each essential element is all higher, but is no more than 35%.In recent years, people are studying high-entropy alloy On the basis of, start also to study high-entropy alloy-base composite material, but relevant report is also seldom, for its phase composition, enhancing Structure composition of the formation of phase, strengthening mechanism and interface etc. at home and abroad all seldom report by periodical.
Currently, the method for preparation high entropy alloy material has very much, but each preparation method all has its advantage, while Drawback can be had.So in the preparation process of high-entropy alloy, it is necessary to performance, the use being had according to selected element and required alloy Way selects suitable preparation method.Studies have shown that powder metallurgic method, height (in) frequency induction stove heating and the method for founding be Prepare the main method of blocky high entropy alloy material；Mechanical alloying method is the main preparation methods of high entropy alloy powder；High entropy The preparation of alloy coating material is then generally adopted by hot spray process, laser rapid solidification method, laser cladding and Argon arc cladding Method；For high-entropy alloy thin-film material, magnetron sputtering method and electrochemical deposition method are mainly used.
Summary of the invention
In order to solve the problems in the existing technology and demand, the present invention use the method for Argon arc cladding in Q235 steel table Face is prepared for using active Fe of the coal associated resources flyash as activating agentxAlCrCuCoTi0.4(x=0,1) high-entropy alloy Coating, using metallographic microscope, scanning electron microscope, X-ray diffractometer, microhardness testers, abrasive wear experimental machine and erosive wear Experimental machine can be carried out test and analysis to the tissue of active high entropy alloy coating, structure and friction and abrasion.
Present invention firstly provides a kind of preparation method of active Argon arc cladding high entropy alloy coating, the preparation method tool Steps are as follows for body:
The first step, the preparation of matrix.
Using rolling state Q235A steel as basis material, steel plate is prepared into having a size of 100mm × 30mm × 8mm examination Then sample is polished with angle grinder, remove the oxide skin and iron rust on its surface, finally clean its surface with acetone, and use hair dryer It is dried up, is placed in spare in drying box.
Second step prepares aluminous fly-ash activating agent.
Carbonization treatment is carried out using aluminous fly-ash, SiO is added into the aluminous fly-ash after carbonization treatment2、B2O3With Ti；And based on this, the La that additionally addition mass percentage is 5%2O3Powder obtains aluminous fly-ash activating agent.Its In, according to mass percent, aluminous fly-ash after carbonization treatment: SiO2:B2O3: Ti=60%:13.8%:25.4%: 0.8%.
The carbonization treatment condition are as follows: by aluminous fly-ash be placed in SX2-8-10 type medium temperature it is box in 800 DEG C of heat preservation 2h, Aluminous fly-ash after obtaining carbonization treatment.
Third step, high entropy alloy coating material are chosen.
Element of the six kinds of elements of Fe, Al, Cr, Cu, Co, Ti as high-entropy alloy is selected, each element molar ratio is x:1:1: 1:1:0.4 i.e. FexAlCoCrCuTi0.4(x=0,1) wherein, Fe1(x=1) molar ratio for referring to additional Fe powder is 1, Fe0(x=0) Matrix melts the Fe atom provided when referring to not additional Fe powder, and utilizing Argon arc cladding.
4th step, high entropy alloy coating material powder is uniformly mixed, and powder is pressed into prefabricated section, the prefabricated section that will be pressed It dries in the shade and is placed on 150 DEG C of drying 2h in drying box afterwards for 24 hours.
Aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix Q235 steel table by the 5th step Face, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding prepare active Argon arc cladding high entropy alloy coating.
Argon arc cladding preparation technology parameter includes: 180~220A of welding current, 60~80mmmin of speed of welding-1, argon 6~7.5Lmin of throughput-1, 2~4mm of arc length.
The Argon arc cladding uses WS-500 type AC/DC pulse TIG Welding Machine.
Preferably, the arc cladding technology parameter are as follows: welding current 200A, speed of welding 75mmmin-1, argon gas Flow 6Lmin-1, arc length 3.5mm.
A kind of Fe is prepared by the above methodxAlCrCuCoTi0.4(x=0,1) system activity high entropy alloy coating, institute The institutional framework of active Argon arc cladding high entropy alloy coating is stated by BCC phase and FCC phase composition.The microhardness of coating reaches 480.5HV0.2~495.6HV0.2；In abrasive wear experiment, when load is 40N, the wearability of coating is improved compared with matrix 2.92~3.73 times；And when load is 60N, 3.45~3.87 times are improved compared with matrix；In erosive wear experiment, in revolving speed point Not Wei 200r/min, 300r/min and 400r/min when, the erosion-wear-resisting performance of coating improves 2.07~3.22 times compared with matrix； When concentration of medium is respectively 5000:1600,5000:2800 and 5000:4000, the erosion-wear-resisting performance of coating is mentioned compared with matrix It is 2.14~4.98 times high.Wherein, Fe1AlCrCuCoTi0.4It is in metallurgical bonding between high entropy alloy coating and matrix, microhardness is high Up to 495.6HV0.2。
The present invention has the advantages that
(1) method that the present invention uses Argon arc cladding prepares active Argon arc cladding high-entropy alloy and applies using Q235 steel as matrix Layer, improves material surface hardness, wearability, meets needs of production.
(2) extensive use of the active Argon arc cladding high entropy alloy coating on the surface of the material in engineering is promoted.
Detailed description of the invention
Fig. 1 is (a) active Fe in the present invention1Coating (b) active Fe0The surface topography of coating.
Fig. 2 is (a) active Fe in the present invention1Coating (b) active Fe0The Cross Section Morphology of coating.
Fig. 3 is (a) active Fe in the present invention1Coating (b) active Fe0The XRD spectra of coating.
Fig. 4 is (a) active Fe in the present invention1Coating (b) active Fe0The middle part microscopic structure schematic diagram of coating.
Fig. 5 is active Fe in the present invention1Coating and active Fe0The microhardness distribution curve of coating.
Fig. 6 is that floating coat and matrix of the present invention the abrasive wear behavior weightlessness comparison when load is (a) 40N (b) 60N are bent Line.
Fig. 7 is the different rotating speeds Erosive Properties weight-loss curve of floating coat and matrix of the present invention, (a) 200r/min, (b) 300r/min, (c) 400r/min, (d) different rotating speeds erosive wear curve.
Fig. 8 be floating coat and matrix of the present invention different medium concentration under Erosive Properties weight-loss curve, (a) 5000: 1600, (b) 5000:2800, (c) 5000:4000, (d) weight-loss curve under different medium concentration.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
The present invention provides a kind of active Argon arc cladding high entropy alloy coating and preparation method thereof, and the preparation method is specific Steps are as follows:
The first step, the preparation of matrix.
It is as shown in table 1 at being grouped as using rolling state Q235A steel as basis material.Before being tested, first by steel Plate is prepared into having a size of 100mm × 30mm × 8mm sample, is then polished with angle grinder, and the oxide skin and iron on its surface are removed Rust, finally cleans its surface with acetone, and dried up with hair dryer, is placed in spare in drying box.
The chemical component (Wt%) of 1 Q235A steel of table
Second step prepares aluminous fly-ash activating agent.
Primary raw material of the aluminous fly-ash provided using Inner Mongolia Zhungeer power plant as composite reactive agent, ingredient are shown in Table 2.It is carried out at decarburization due to, containing a small amount of uncombusted C, needing to place it in front of experiment in resistance furnace in the flyash of power plant Reason, that is, place it in SX2-8-10 type medium temperature it is box in 800 DEG C of heat preservation 2h, the aluminous fly-ash after obtaining carbonization treatment.To institute SiO is added in aluminous fly-ash after the carbonization treatment stated2、B2O3With Ti element, mass percentage content relationship are as follows:
Aluminous fly-ash after carbonization treatment: SiO2:B2O3: Ti=60%:13.8%:25.4%:0.8%.
In the above-mentioned (aluminous fly-ash+13.8%SiO after 60% carbonization treatment2+ 25.4%B2O3+ 0.8%Ti) basis On, then add the La that mass percentage is 5%2O3Powder forms aluminous fly-ash activating agent.
The ingredient (Wt%) of 2 aluminous fly-ash of table
Third step, coating material are chosen.
Select pivot element of the six kinds of elements of Fe, Al, Cr, Cu, Co, Ti as high-entropy alloy, the atom between each element Semidiameter is less than 12%.Element of Fe, Al, Co, Cr, Cu, Ti molar ratio are x:1:1:1:1:0.4, i.e. FexAlCoCrCuTi0.4(x =0,1) wherein, Fe1(x=1) molar ratio for referring to additional Fe powder is 1, Fe0(x=0) refer to not additional Fe powder, and utilize Argon arc cladding Shi Jiti melts the Fe atom provided.
4th step, the quality of coating material powder needed for being weighed according to formula mix the powder of high-entropy alloy element equal It is even, it is placed in mortar, the waterglass that suitable modulus is 2.5 is added, pours into after grinding uniformly having a size of 80mm × 10mm × 2mm In rectangular mould, wetting powder is pressed into prefabricated section under 110MPa pressure using WE-30 hydraulic universal experimental machine, will be pressed Good prefabricated section dries in the shade is placed on 150 DEG C of drying 2h in drying box afterwards for 24 hours.
Load weighted aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix by the 5th step Q235 steel surface, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding method prepare active Argon arc cladding high entropy alloy coating.
Argon arc cladding preparation technology parameter includes: 180~220A of welding current, 60~80mmmin of speed of welding-1, argon 6~7.5Lmin of throughput-1, 2~4mm of arc length.
The Argon arc cladding uses WS-500 type AC/DC pulse TIG Welding Machine.
Preferably, the arc cladding technology parameter are as follows: welding current 200A, speed of welding 75mmmin-1, argon gas Flow 6Lmin-1, arc length 3.5mm.
Above-mentioned preparation method obtains active Argon arc cladding high entropy alloy coating, and the institutional framework of coating is by BCC phase and FCC phase Composition.It is in metallurgical bonding between coating and matrix, microhardness is up to 495.6HV0.2。
It is described in detail below by embodiment.
Embodiment 1:
The first step, the preparation of matrix.
Using rolling state Q235A steel as basis material, before being tested, steel plate is prepared into having a size of 100mm first The sample of × 30mm × 8mm, is then polished with angle grinder, is removed the oxide skin and iron rust on its surface, is finally cleaned it with acetone Surface, and dried up with hair dryer, it is placed in spare in drying box.
Second step prepares aluminous fly-ash activating agent.
Primary raw material of the aluminous fly-ash provided using Inner Mongolia Zhungeer power plant as composite reactive agent.It is put Carbonization treatment is carried out in resistance furnace, that is, place it in SX2-8-10 type medium temperature it is box in 800 DEG C of heat preservation 2h, obtain carbonization treatment Aluminous fly-ash afterwards.SiO is added into the aluminous fly-ash after the carbonization treatment2、B2O3With Ti element, quality percentage Compare relation with contents are as follows:
Aluminous fly-ash after carbonization treatment: SiO2:B2O3: Ti=60%:13.8%:25.4%:0.8%.
In the above-mentioned (aluminous fly-ash+13.8%SiO after 60% carbonization treatment2+ 25.4%B2O3+ 0.8%Ti) basis On, then add the La that mass percentage is 5%2O3Powder forms aluminous fly-ash activating agent.
Third step, coating material are chosen.
Select six kinds of element powders of Fe, Al, Cr, Cu, Co, Ti, molar ratio 1:1:1:1:1:0.4.
4th step, the quality of coating material powder needed for being weighed according to formula mix the powder of high-entropy alloy element equal It is even, it is placed in mortar, the waterglass that modulus is 2.5 is added, pours into after grinding uniformly having a size of 80mm × 10mm × 2mm cuboid In mold, wetting powder is pressed into prefabricated section under 110MPa pressure using WE-30 hydraulic universal experimental machine, it is pre- by what is pressed Clamp dog dries in the shade is placed on 150 DEG C of drying 2h in drying box afterwards for 24 hours.
Load weighted aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix by the 5th step Q235 steel surface, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding method prepare active Argon arc cladding high entropy alloy coating, referred to as active Fe1Coating.
The arc cladding technology parameter are as follows: welding current 200A, speed of welding 75mmmin-1, argon flow 6L min-1, arc length 3.5mm.
Embodiment 2:
The first step, the preparation of matrix.
With embodiment 1.
Second step prepares aluminous fly-ash activating agent.
With embodiment 1.
Third step, coating material are chosen.
Select five kinds of elements of Al, Cr, Cu, Co, Ti, molar ratio 1:1:1:1:0.4, i.e. Fe0AlCoCrCuTi0.4, not outer Matrix melts the Fe atom provided when adding Fe powder, and utilizing Argon arc cladding.
4th step, prefabricated piece of prepares coating.
With embodiment 1.
Load weighted aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix by the 5th step Q235 steel surface, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding method prepare active Argon arc cladding high entropy alloy coating, referred to as active Fe0Coating.
Argon arc cladding preparation technology parameter includes: welding current 200A, speed of welding 75mmmin-1, argon flow 6L min-1, arc length 3.5mm.
Embodiment 3:
The first step, the preparation of matrix.
With embodiment 1.
Second step prepares aluminous fly-ash activating agent.
With embodiment 1.
Third step, coating material are chosen.
Selection six kinds of elements of Fe, Al, Cr, Cu, Co, Ti, molar ratio 1:1:1:1:1:0.4, i.e., Fe1AlCoCrCuTi0.4。
4th step, prefabricated piece of prepares coating.
With embodiment 1.
Load weighted aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix by the 5th step Q235 steel surface, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding method prepare active Argon arc cladding high entropy alloy coating.
Argon arc cladding preparation technology parameter includes: welding current 180A, speed of welding 60mmmin-1, argon flow 7L min-1, arc length 2mm.
Embodiment 4:
The first step, the preparation of matrix.
With embodiment 1.
Second step prepares aluminous fly-ash activating agent.
With embodiment 1.
Third step, coating material are chosen.
Select five kinds of elements of Al, Cr, Cu, Co, Ti, molar ratio 1:1:1:1:0.4, i.e. Fe0AlCoCrCuTi0.4, not outer Matrix melts the Fe atom provided when adding Fe powder, and utilizing Argon arc cladding.
4th step, prefabricated piece of prepares coating.
With embodiment 1.
Load weighted aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix by the 5th step Q235 steel surface, and prefabricated section is sticked to thereon with a small amount of waterglass.
6th step, Argon arc cladding method prepare active Argon arc cladding high entropy alloy coating.
Argon arc cladding preparation technology parameter includes: welding current 220A, speed of welding 80mmmin-1, argon flow 7.5L·min-1, arc length 4mm.
In the active Argon arc cladding high entropy alloy coating that 1~embodiment of above-described embodiment 4 is prepared, typical microfacies Group becomes BBC and FFC structure, and crystal boundary is clear, in polygonal network shape tissue Dispersed precipitate gritty texture.The depth of weld seam Wide ratio is 0.25~0.26.Significantly improve the microhardness and polishing machine of basis material.
The active Fe prepared with embodiment 11The active Fe prepared in coating and embodiment 20For coating, the present invention is provided The experimental test data of the active Argon arc cladding high entropy alloy coating of preparation.
Fig. 1 is active FexThe surface topography of (x=1,0) coating, it can be seen from the figure that active Fe1The surface of coating is molten Slag is more, and stomata is few, while coating sprawls tendency obviously in matrix surface.Two kinds of coating morphologies are preferable, illustrate activating agent Addition facilitate the generation of slag while also improving the wettability of coating and matrix to a certain extent, facilitate acquisition table Face shapes preferable coating.
Fig. 2 is active Fe1Coating and active Fe0The Pool of coating.The molten of coating is measured using USB digit microscope Deep, molten wide size, as shown in table 3, active Fe1The fusion penetration of coating is 3.28mm, molten wide 12.61mm, depth-to-width ratio 0.26. Active Fe0The fusion penetration of coating is 3.16mm, molten wide 12.58mm, depth-to-width ratio 0.25.It is clear from figure 2 that matrix It is in metallurgical bonding with coating, in conjunction with preferable, active Fe1Coating is sprawled well, and fusion penetration molten wide is compared with active Fe0Coating all increased. Lead to the phenomenon the reason is that temperature is lower in the welding process at active coating edge, molten bath heat is difficult to make to make base material matrix molten Change, therefore edge is combined in flat, while at the center of molten bath in heat active set, temperature is high, and arc force is also strong, therefore Pool depth is big.
3 depth-to-width ratio result of table
Fig. 3 is active Fex(x=1,0) the XRD diffraction pattern of coating structure.The phase composition of two kinds of high entropy alloy coatings is BCC phase and FCC phase composition, BCC phase are mainly Fe-Cr solid solution, α-Cr and a small amount of AlxFeyIntermetallic compound composition, and FCC The position of the same γ-Fe diffraction maximum in the position of phase diffraction maximum is close.As seen from Figure 3, two kinds of diffracting spectrums are similar, diffraction maximum Shape is also not much different.
Fig. 4 (a), (b) are respectively active Argon arc cladding Fe1Coating and Fe0The middle part displaing micro tissue topography of coating.From figure It can be found that the tissue of two kinds of active high entropy alloy coatings is similar, in polygonal network shape tissue Dispersed precipitate graininess Tissue, but and active Fe1The tissue of coating is compared, active Fe0The tissue of coating is coarseer, but crystal boundary is more visible.
Fig. 5 is active FexThe microhardness distribution curve graph of coating.As can be seen from Fig., active Fe1The hardness of coating is bent Line is in active Fe0The top of coating hardness curve, and the hardness of the two is along fusion penetration direction decline trend in gradient, wherein Active Fe1The microhardness of coating is higher than active Fe0The microhardness of coating, has respectively reached 495.6HV0.2、480.5HV0.2。
Active FexThe abrasive wear experiment of coating carries out abrasive wear experiment with 4# sand paper using the method for control variable, The size for changing load, tests its influence to coating Abrasive Resistance of Stubble-cleaning.Table 4 and Fig. 6 are carried out under 40N, 60N load The resulting data of abrasive wear and unit area weight-loss curve figure.As known from Table 4: active Fe when load is 40N1Coating and Fe0It applies The wearability of layer is respectively increased 3.73 and 2.92 times compared with matrix, and active Fe when load is 60N1Coating and Fe0The wearability of coating 3.87 and 3.45 times are respectively increased compared with matrix.It absolutely proves, active Fe1The Abrasive Resistance of Stubble-cleaning of coating is better than active Fe0It applies Layer, better than matrix.The addition of Fe element in coating plays obvious action to the raising of coating hardness.
4 different loads abrasive wear unit area loss amount of table
From fig. 6, it can be seen that the abrasion loss curve graph of matrix is located at top and the phase of coating when load is 40N and 60N Larger to variable quantity, this illustrates that matrix abrasion is the most serious, and the wearability of two kinds of coatings is superior to matrix, but active Fe1Coating Relative wear resistance is best, and as time increases, the linear ascendant trend of abrasion loss curve of matrix, relative wear resistance compared with Difference, and the wearability of coating gradually tends to be steady state, the rate of rising reduces.
It is 5000:2800 that erosive wear concentration of medium (water constituents) is selected in the present invention, and erosion angle is 90 °, revolving speed difference For 200r/min, 300r/min and 400r/min.The erosive wear of different rotating speeds condition lower substrate and active high entropy alloy coating Data are as shown in table 5.By further calculating, active Fe after erosive wear 120min1Coating and Fe0The erosion resistance of coating is ground Damage 3.10~3.22 and 2.07~2.33 times that performance is respectively increased compared with matrix.Fig. 7 be different rotating speeds under conditions of matrix and Active FexThe unit area weight-loss curve figure of coating.As shown in Figure 7, the weight-loss curve of matrix is always situated in the top, unit Area weight loss is maximum, and abrasion is the most serious, and active FexThe weight-loss curve of coating is located at the lower section of matrix, and what is risen becomes Gesture is more gentle, and unit area weight loss is smaller.Therefore, under conditions of same rotational speed, the erosive wear of matrix is the most serious, and Active Fe1The erosive wear weight loss of coating is minimum, illustrates that its erosion-wear-resisting performance is best.
Erosive wear data under the conditions of 5 different rotating speeds of table
Erosive wear revolving speed be 300r/min, erosion angle be 90 °, concentration of medium (water constituents) be respectively 5000:1600, Erosive wear experiment is carried out under conditions of 5000:2800 and 5000:4000.Table 6 and Fig. 8 are respectively matrix and active FexCoating Erosive wear weight loss data and curve.
Erosive wear data under 6 different medium concentration of table
By calculate it can be concluded that, erosive wear revolving speed be 300r/min when different medium concentration active Fe1Coating and Active Fe0Be respectively increased compared with matrix 2.92~4.98 and 2.14~4.42 times of the erosion-wear-resisting of coating.By Fig. 8 (a~c) It is found that the erosive wear weight loss of matrix is significantly larger than high-entropy alloy painting under conditions of same rotational speed, different medium concentration Layer, and Fe1Coating erosive wear weight loss is minimum, illustrates that its erosion-wear-resisting performance is best.
By testing it is found that active Fe1Coating, active Fe0The microhardness of coating can reach 495.6HV0.2、 480.5HV0.2.In abrasive wear experiment, when load is 40N, active Fe1Coating, active Fe0The wearability of coating is compared with matrix It is respectively increased 3.73,2.92 times；And when load is 60N, 3.87,3.45 times are respectively increased compared with matrix.It is tested in erosive wear In, the active Fe when revolving speed is respectively 200r/min, 300r/min and 400r/min1Coating, active Fe0The erosion resistance of coating is ground It damages performance and is respectively increased 3.10~3.22 and 2.07~2.33 times compared with matrix；It is respectively 5000:1600,5000 in concentration of medium: When 2800 and 5000:4000, active Fe1Coating and active Fe0The erosion-wear-resisting performance of coating is respectively increased 2.92 compared with matrix~ 4.98 and 2.14~4.42 times.

Claims (6)

1. a kind of preparation method of activity Argon arc cladding high entropy alloy coating, it is characterised in that: the preparation method specifically walks It is rapid as follows:
The first step, the pretreatment of matrix；
Using rolling state Q235A steel as basis material, steel plate is prepared into having a size of 100mm × 30mm × 8mm sample, so After polish, clean, and dried up with hair dryer, is placed in spare in drying box；
Second step prepares aluminous fly-ash activating agent；
Carbonization treatment is carried out using aluminous fly-ash, SiO is added into the aluminous fly-ash after carbonization treatment2、B2O3And Ti；And Based on this, the La that additionally addition mass percentage is 5%2O3Powder obtains aluminous fly-ash activating agent；Wherein, according to Mass percent:
Aluminous fly-ash after carbonization treatment: SiO2:B2O3: Ti=60%:13.8%:25.4%:0.8%；
Third step, high entropy alloy coating material are chosen；
Element of the six kinds of elements of Fe, Al, Cr, Cu, Co, Ti as high-entropy alloy is selected, each element molar ratio is x:1:1:1:1: 0.4, i.e. FexAlCoCrCuTi0.4, wherein x=0,1；X=0 refers to not additional Fe powder, and is mentioned using matrix thawing when Argon arc cladding The Fe atom of confession；
4th step, high entropy alloy coating material powder is uniformly mixed, and powder is pressed into prefabricated section, and the prefabricated section pressed is dried in the shade It is placed on 150 DEG C of drying 2h in drying box afterwards for 24 hours；
Aluminous fly-ash activating agent and acetone solvent are mixed with suspension, are coated in matrix Q235A steel surface by the 5th step, And prefabricated section is sticked to thereon with a small amount of waterglass；
6th step, Argon arc cladding prepare active Argon arc cladding high entropy alloy coating；
Argon arc cladding preparation technology parameter includes: 180~220A of welding current, 60~80mmmin of speed of welding-1, argon gas stream Measure 6~7.5Lmin-1, 2~4mm of arc length；
The institutional framework of the activity Argon arc cladding high entropy alloy coating is by BCC phase and FCC phase composition；The microhardness of coating reaches 480.5HV0.2~495.6HV0.2；In abrasive wear experiment, when load is 40N, the wearability of coating is improved compared with matrix 2.92~3.73 times；And when load is 60N, 3.45~3.87 times are improved compared with matrix；In erosive wear experiment, in revolving speed point Not Wei 200r/min, 300r/min and 400r/min when, the erosion-wear-resisting performance of coating improves 2.07~3.22 times compared with matrix； When concentration of medium is respectively 5000:1600,5000:2800 and 5000:4000, the erosion-wear-resisting performance of coating is mentioned compared with matrix 2.14~4.98 times high, the concentration of medium refers to water constituents.
2. a kind of preparation method of active Argon arc cladding high entropy alloy coating according to claim 1, it is characterised in that: institute The carbonization treatment condition stated are as follows: by aluminous fly-ash be placed in SX2-8-10 type medium temperature it is box in 800 DEG C of heat preservation 2h, obtain at decarburization Aluminous fly-ash after reason.
3. a kind of preparation method of active Argon arc cladding high entropy alloy coating according to claim 1, it is characterised in that: institute The Argon arc cladding stated uses WS-500 type AC/DC pulse TIG Welding Machine.
4. a kind of preparation method of active Argon arc cladding high entropy alloy coating according to claim 1, it is characterised in that: institute The arc cladding technology parameter stated are as follows: welding current 200A, speed of welding 75mmmin-1, argon flow 6Lmin-1, electric arc Length 3.5mm.
5. a kind of activity Argon arc cladding high entropy alloy coating, it is characterised in that: the activity Argon arc cladding high entropy alloy coating is FexAlCoCrCuTi0.4, wherein x=0,1；The institutional framework of the high entropy alloy coating is by BCC phase and FCC phase composition；Coating Microhardness reach 480.5HV0.2~495.6HV0.2；In abrasive wear experiment, when load is 40N, the wearability of coating 2.92~3.73 times are improved compared with matrix；And when load is 60N, 3.45~3.87 times are improved compared with matrix；It is tested in erosive wear In, when revolving speed is respectively 200r/min, 300r/min and 400r/min, the erosion-wear-resisting performance of coating is improved compared with matrix 2.07~3.22 times；When concentration of medium is respectively 5000:1600,5000:2800 and 5000:4000, the erosion resistance of coating is ground It damages performance and improves 2.14~4.98 times compared with matrix.
6. a kind of active Argon arc cladding high entropy alloy coating according to claim 5, it is characterised in that: the high-entropy alloy Coating is Fe1AlCrCuCoTi0.4High entropy alloy coating, Fe1AlCrCuCoTi0.4It is in metallurgical junction between high entropy alloy coating and matrix It closes, microhardness is up to 495.6HV0.2。
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