CN111893404A - High-wear-resistance iron-based amorphous/carbon nanotube powder core wire material and preparation method and application thereof - Google Patents
High-wear-resistance iron-based amorphous/carbon nanotube powder core wire material and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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- C22C45/006—Amorphous alloys with Cr as the major constituent
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- 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
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- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- 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
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- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
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Abstract
The invention discloses a high wear-resistant iron-based amorphous/carbon nanotube powder core wire material and a preparation method and application thereof, wherein the wire material comprises 98.5-99.5 wt.% of iron-based amorphous and 0.5-1.5 wt.% of carbon nanotubes; the cored wire is prepared by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1. The application of the cored wire in the iron-based amorphous/carbon nanotube composite protective coating adopts an electric arc spraying technology to prepare the coating. The protective coating with high bonding strength, high hardness and excellent wear resistance is obtained, and has wide application prospect.
Description
Technical Field
The invention belongs to the field of metal materials, and particularly relates to a high-wear-resistance iron-based amorphous/carbon nanotube powder core wire material, and a preparation method and application thereof.
Background
Wear is one of the main failure modes of mechanical parts and engineering components, and the economic loss caused by the wear is huge. With the rapid development of industrial technology and the continuous improvement of mechanization and automation degree, the damage caused by the abrasion of mechanical equipment and parts is more and more emphasized by people. As a novel material, the amorphous material has a long-range disordered and short-range ordered structure and does not have the defects of grain boundaries, dislocation and the like, so that the amorphous material generally has the advantages of high strength, high hardness, good wear resistance, good corrosion resistance and the like. However, the existing iron-based amorphous material has high difficulty and high cost in preparation or the amorphous phase content of the system is not high, so that the wear resistance of the amorphous material is poor.
Disclosure of Invention
In view of the above problems, the object of the present invention is: the high wear-resistant iron-based amorphous/carbon nanotube powder core wire material and the preparation method and application thereof are provided, the carbon nanotubes are uniformly dispersed in the amorphous matrix, and the obtained composite material has high bonding strength, high hardness and excellent wear resistance.
In order to achieve the purpose, the invention adopts the technical scheme that: a high wear-resistant iron-based amorphous/carbon nanotube powder core wire, which comprises 98.5-99.5 wt.% of iron-based amorphous and 0.5-1.5 wt.% of carbon nanotubes; the wire is made by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1.
Still further, it comprises 99 wt.% fe-based amorphous and 1 wt.% carbon nanotubes.
Further, the high wear-resistant iron-based amorphous/carbon nanotube powder core wire is prepared by the following steps:
(1) mixing seven element powders of the powder core and the carbon nano tube according to the mass percentage, adding alcohol, and wet-mixing for 24-36 h in a ball mill at the rotating speed of 120 r/min to obtain a mixture, wherein the weight ratio of the stainless steel grinding balls to the mixed powder is 4: 1;
(2) placing the mixture obtained in the step (1) in a rotary evaporator, drying until alcohol volatilizes, then placing the dried mixture in a drying oven for drying at the drying temperature of 80 ℃ for 4 hours, and then sieving by a sieve of 60-150 meshes to obtain powder;
(3) pressing the stainless steel belt into a U shape, and adding the powder in the step (2) into the U-shaped groove;
(4) closing the U-shaped stainless steel strip, coating the powder in the U-shaped stainless steel strip, and then drawing and reducing the diameter one by one to finally obtain the cored wire with the diameter of 3 mm.
Furthermore, the application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire in the composite protective coating comprises the following steps:
(1) pretreating the surface of the substrate: after removing rust and oil on the surface of the matrix, under the condition that the air pressure is 0.7-0.8 MPa, adopting brown corundum sand with the granularity of 5-35 meshes to perform sand blasting and coarsening on the surface of the matrix;
(2) spraying: loading the cored wire into a wire feeding device of electric arc spraying equipment, and preparing an amorphous/carbon nano tube composite protective coating on the surface of the pretreated substrate; the process parameters of the electric arc spraying equipment are as follows: the spraying voltage is 32V, the spraying current is 160A, the spraying distance is 200 mm, and the compressed air pressure is 0.6 MPa.
Furthermore, the bonding strength of the composite protective coating is more than or equal to 30 MPa, and the hardness is more than or equal to 700 HV0.3And the friction coefficient is less than or equal to 0.5.
The invention has the beneficial effects that:
1. the coating with high bonding strength, high hardness and excellent wear resistance is obtained, is suitable for parts working under severe working conditions such as severe wear and the like, is easy to industrialize and has wide application prospect.
2. In the components of the iron-based amorphous/carbon nanotube material, C is used as a metalloid element, so that the critical cooling speed of the amorphous alloy is reduced, and the formation of an amorphous phase is facilitated; si has the function of improving the fluidity of the molten metal and the amorphous forming capability of the system; cr effectively improves the rigidity, strength and wear resistance of the system; zr plays a role in precipitation strengthening, and the strength and hardness of the coating are improved; co improves the glass forming capability of the system and widens the amorphous forming range; the addition of Ni improves the thermal stability of the amorphous alloy and is beneficial to improving the toughness of the coating;
3. through the adjustment of the types of the added atoms and the proportion of the atoms, atoms have a large degree of atom mismatching, which can reduce the free volume of the system, hinder the diffusion of elements and improve the amorphous forming capability and stability of the system;
4. by adding the carbon nano tube, the excellent mechanical property of the carbon nano tube is exerted, and the self-lubricating effect of the carbon nano tube is also exerted, so that the wear resistance of the composite material is improved;
5. by adopting the electric arc spraying technology, the composite coating prepared on the substrate has the bonding strength of more than or equal to 30 MPa and the hardness of more than or equal to 700 HV0.3And the friction coefficient is less than or equal to 0.5.
6. The iron-based amorphous material has the advantages of low preparation difficulty, low cost, high amorphous forming capability and high content of amorphous phase in a system, so that the amorphous material has good wear resistance.
7. The proper nanometer second phase is added into the alloy system to effectively improve the wear resistance of the alloy, and the second phase is uniformly added into the iron-based amorphous system through content control and process control, so that the wear resistance of the system is greatly improved.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the specific material ratios, process conditions and results thereof described in the examples are illustrative only and should not be taken as limiting the invention as detailed in the claims.
Example 1:
a high wear-resistant iron-based amorphous/carbon nanotube powder core wire comprises iron-based amorphous and carbon nanotubes, wherein the content of the carbon nanotubes is 0.5 wt.%; the wire is made by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1.
The high-wear-resistance iron-based amorphous/carbon nanotube powder core wire is prepared by the following steps:
(1) mixing seven element powders of the powder core and the carbon nano tube according to the mass percentage, adding alcohol, and wet-mixing in a ball mill for 30 hours at the rotating speed of 120 r/min to obtain a mixture, wherein the weight ratio of the stainless steel grinding balls to the mixed powder is 4: 1;
(2) placing the mixture in a rotary evaporator, drying until alcohol volatilizes, then placing the dried mixture in a drying oven for drying at 80 ℃ for 4 hours, and then sieving with a 105-mesh sieve to obtain powder;
(3) pressing a stainless steel belt into a U shape, and adding the powder material into the U-shaped groove;
(4) closing the U-shaped stainless steel strip, coating the powder in the U-shaped stainless steel strip, and then drawing and reducing the diameter one by one to finally obtain the cored wire with the diameter of 3 mm.
The application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire material in the protective coating comprises the following specific construction method:
(1) pretreating the surface of the substrate: after removing rust and oil on the surface of the matrix, adopting brown corundum sand with the granularity of 20 meshes to perform sand blasting and coarsening on the surface of the matrix under the air pressure of 0.75 MPa;
(2) loading the cored wire into a wire feeding device of electric arc spraying equipment, and preparing an amorphous/carbon nano tube composite coating on the surface of the pretreated substrate; the process parameters of the electric arc spraying equipment are as follows: the spraying voltage is 32V, the spraying current is 160A, the spraying distance is 200 mm, and the compressed air pressure is 0.6 MPa.
Example 2:
a high wear-resistant iron-based amorphous/carbon nanotube powder core wire comprises iron-based amorphous and carbon nanotubes, wherein the content of the carbon nanotubes is 1 wt.%; the wire is made by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1.
The high-wear-resistance iron-based amorphous/carbon nanotube powder core wire is prepared by the following steps:
(1) mixing seven element powders of the powder core and the carbon nano tube according to the mass percentage, adding alcohol, and wet-mixing in a ball mill at the rotating speed of 120 r/min for 24 hours to obtain a mixture, wherein the weight ratio of the stainless steel grinding balls to the mixed powder is 4: 1;
(2) placing the mixture obtained in the step (1) in a rotary evaporator, drying until alcohol volatilizes, then placing the dried mixture in a drying oven for drying at the drying temperature of 80 ℃ for 4 hours, and then sieving the dried mixture by a 60-mesh sieve to obtain powder;
(3) pressing the stainless steel belt into a U shape, and adding the powder in the step (2) into the U-shaped groove;
(4) closing the U-shaped stainless steel strip, coating the powder in the U-shaped stainless steel strip, and then drawing and reducing the diameter one by one to finally obtain the cored wire with the diameter of 3 mm.
The application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire material in the composite protective coating comprises the following steps:
(1) pretreating the surface of the substrate: after removing rust and oil on the surface of the matrix, adopting brown corundum sand with the granularity of 5 meshes to perform sand blasting and coarsening on the surface of the matrix under the condition that the air pressure is 0.7 MPa;
(2) spraying: loading the cored wire into a wire feeding device of electric arc spraying equipment, and preparing an amorphous/carbon nano tube composite protective coating on the surface of the pretreated substrate; the process parameters of the electric arc spraying equipment are as follows: the spraying voltage is 32V, the spraying current is 160A, the spraying distance is 200 mm, and the compressed air pressure is 0.6 MPa.
Example 3:
a high wear-resistant iron-based amorphous/carbon nano tube material powder core wire comprises iron-based amorphous and carbon nano tubes, wherein the content of the carbon nano tubes is 1.5 wt.%; the wire is made by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1.
The high wear-resistant iron-based amorphous/carbon nanotube powder core wire is prepared by the following steps:
(1) mixing seven element powders of the powder core and the carbon nano tube according to the mass percentage, adding alcohol, and wet mixing in a ball mill for 36 hours at the rotating speed of 120 r/min to obtain a mixture, wherein the weight ratio of the stainless steel grinding balls to the mixed powder is 4: 1;
(2) placing the mixture obtained in the step (1) in a rotary evaporator, drying until alcohol volatilizes, then placing the dried mixture in a drying oven for drying at the drying temperature of 80 ℃ for 4 hours, and then sieving the dried mixture by a 150-mesh sieve to obtain powder;
(3) pressing the stainless steel belt into a U shape, and adding the powder in the step (2) into the U-shaped groove;
(4) closing the U-shaped stainless steel strip, coating the powder in the U-shaped stainless steel strip, and then drawing and reducing the diameter one by one to finally obtain the cored wire with the diameter of 3 mm.
The application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire material in the composite protective coating comprises the following steps:
(1) pretreating the surface of the substrate: after removing rust and oil on the surface of the matrix, adopting brown corundum sand with the granularity of 35 meshes to perform sand blasting and coarsening on the surface of the matrix under the condition that the air pressure is 0.8 MPa;
(2) spraying: loading the cored wire into a wire feeding device of electric arc spraying equipment, and preparing an amorphous/carbon nano tube composite protective coating on the surface of the pretreated substrate; the process parameters of the electric arc spraying equipment are as follows: the spraying voltage is 32V, the spraying current is 160A, the spraying distance is 200 mm, and the compressed air pressure is 0.6 MPa.
Respectively preparing the iron-based amorphous/carbon nanotube composite protective coating according to the embodiments 1-3, and testing the bonding strength, hardness and wear resistance of the iron-based amorphous/carbon nanotube composite protective coating; the bonding strength is measured by a stretching method, and E-7 glue is selected as a binder; adopting an HXD-1000TC microhardness tester to test the microhardness of the coating, wherein the load is 300 g and the load retention time is 15 s in the test process; the friction coefficient of the coating at room temperature was measured by using a HT-1000 type friction wear tester manufactured by Kaikaywa Huakeke technology development Limited in Lanzhou, at a test rotation speed of 15.9rps and a load of 1000 g. The detection results are shown in the following table:
Claims (5)
1. a high wear-resistant iron-based amorphous/carbon nanotube powder core wire is characterized in that: the wire comprises 98.5-99.5 wt.% of iron-based amorphous and 0.5-1.5 wt.% of carbon nanotubes; the wire is made by coating a powder core by a stainless steel band, the powder core is formed by mixing seven element powders, and the weight percentage ranges are as follows: 38% of Cr, 2% of C, 4% of Si, 3% of Ni, 5% of Co, 10% of Zr and the balance of Fe; the stainless steel band is 310S stainless steel, and the weight ratio of the powder core to the stainless steel band is 0.8: 1.
2. The high wear-resistant iron-based amorphous/carbon nanotube powder core wire of claim 1, which is characterized in that: it comprises 99 wt.% iron-based amorphous and 1 wt.% carbon nanotubes.
3. The high wear-resistant iron-based amorphous/carbon nanotube powder core wire according to claim 1, which is prepared by the following steps:
(1) mixing seven element powders of the powder core and the carbon nano tube according to the mass percentage, adding alcohol, and wet-mixing for 24-36 h in a ball mill at the rotating speed of 120 r/min to obtain a mixture, wherein the weight ratio of the stainless steel grinding balls to the mixed powder is 4: 1;
(2) placing the mixture obtained in the step (1) in a rotary evaporator, drying until alcohol volatilizes, then placing the dried mixture in a drying oven for drying at the drying temperature of 80 ℃ for 4 hours, and then sieving by a sieve of 60-150 meshes to obtain powder;
(3) pressing the stainless steel belt into a U shape, and adding the powder in the step (2) into the U-shaped groove;
(4) closing the U-shaped stainless steel strip, coating the powder in the U-shaped stainless steel strip, and then drawing and reducing the diameter one by one to finally obtain the cored wire with the diameter of 3 mm.
4. The application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire in the composite protective coating according to claim 1, characterized in that the construction method of the composite protective coating comprises the following steps:
(1) pretreating the surface of the substrate: after removing rust and oil on the surface of the matrix, under the condition that the air pressure is 0.7-0.8 MPa, adopting brown corundum sand with the granularity of 5-35 meshes to perform sand blasting and coarsening on the surface of the matrix;
(2) spraying: loading the cored wire into a wire feeding device of electric arc spraying equipment, and preparing an amorphous/carbon nano tube composite protective coating on the surface of the pretreated substrate; the process parameters of the electric arc spraying equipment are as follows: the spraying voltage is 32V, the spraying current is 160A, the spraying distance is 200 mm, and the compressed air pressure is 0.6 MPa.
5. The application of the high wear-resistant iron-based amorphous/carbon nanotube powder core wire in the composite protective coating according to claim 4, wherein the high wear-resistant iron-based amorphous/carbon nanotube powder core wire is characterized in that: the bonding strength of the composite protective coating is more than or equal to 30 MPa, and the hardness is more than or equal to 700 HV0.3And the friction coefficient is less than or equal to 0.5.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63118050A (en) * | 1986-11-06 | 1988-05-23 | Unitika Ltd | Fine amorphous metallic wire |
| CN102181814A (en) * | 2011-05-20 | 2011-09-14 | 河海大学 | Cored wire for high amorphous content wear-resistant anticorrosive coating layer |
| CN110205567A (en) * | 2019-06-18 | 2019-09-06 | 河海大学 | A kind of piston ring Fe-based amorphous/MAX phase composite materials and its preparation method and application |
-
2020
- 2020-07-29 CN CN202010742890.9A patent/CN111893404A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63118050A (en) * | 1986-11-06 | 1988-05-23 | Unitika Ltd | Fine amorphous metallic wire |
| CN102181814A (en) * | 2011-05-20 | 2011-09-14 | 河海大学 | Cored wire for high amorphous content wear-resistant anticorrosive coating layer |
| CN110205567A (en) * | 2019-06-18 | 2019-09-06 | 河海大学 | A kind of piston ring Fe-based amorphous/MAX phase composite materials and its preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| 杜卫民: "《纳米材料化学的理论与工程应用研究》", 31 May 2018, 电子科技大学出版社 * |
| 谭毅等: "《新材料概论》", 31 March 2004, 冶金工业出版社 * |
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