AMORPHOUS ALLOY REINFORCED CU-BASED COMPOSITE COATING AND COMPOSITE BULK MATERIAL AND PREPARATION METHOD THEREOF

Abstract

An amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising an amorphous alloy reinforced Cu-based composite coating and an amorphous alloy reinforced Cu-based composite bulk material, both the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material comprise at least Cu powder and amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder, a proportion of the Cu powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 55% to 95%, a proportion of the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder content in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 5% to 45%. The thickness of the composite coating provided by the invention is 300 m to 2000 m, and the thickness of the composite bulk material reaches the centimeter level.

Claims

1. An amorphous alloy reinforced Cu-based composite coating and composite bulk material, comprising an amorphous alloy reinforced Cu-based composite coating and an amorphous alloy reinforced Cu-based composite bulk material, wherein both the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material comprise at least Cu powder and amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder.

2. The amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 1, wherein a proportion of the Cu powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 55% to 95%.

3. The amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 1, wherein a proportion of the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder content in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 5% to 45%.

4. The amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 1, wherein the particle sizes of both the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material range from 20 m to 50 m.

5. A preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 1, comprising the following steps: S1: firstly, sieving the Cu powder particles and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder particles to a specified particle size; S2: secondly, according to a specified proportion for the composite coating, blending the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder in the above specified proportion; S3: then, pouring the blended Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder into a powder mixer; S4: once the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder are fully mixed, drying mixed powder; S5: finally, obtaining the processed amorphous alloy reinforced Cu-based composite coating and composite bulk material.

6. The preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 5, wherein in S3, the powder mixer used is a V-type powder mixer, and the powder mixer used can also be a three-dimensional powder mixer or a two-dimensional powder mixer, and the mixing speed of the powder mixer is 150 r/min to 300 r/min, and the mixing time of the powder mixer is 30 min to 90 min.

7. The preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 5, wherein in S4, the drying time for the mixed Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder is 2 h to 6 h, and drying temperature is preferably 40 C. to 80 C.

8. The preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 5, wherein in S4, the Cu powder and the amorphous alloy powder are treated to obtain the mixed powder, and the mixed powder is fed into a powder feed system of a cold spray system for spraying.

9. The preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 8, wherein the powder feed system comprises at least a receiving device, the receiving device is made of Al alloy substrate, the spraying distance for the spraying process is preferably 20 mm to 40 mm; the gas used in the spraying process of the cold spray system is at least one of N.sub.2, Ar, or He, the preferred gas temperature for the spraying is 500 C. to 800 C., and the preferred gas pressure for the spraying is 3 MPa to 6 MPa.

10. The preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material of claim 9, wherein the receiving device needs to be pretreated before use, the pretreatment at least includes sandblasting, ultrasonic cleaning, and drying treatments; the inlet pressure for the sandblasting treatment is 0.6 MPa to 0.8 MPa, the preferred pressure for the sandblasting process is 0.2 MPa to 0.4 MPa; the solvent used for ultrasonic cleaning is either ethanol or acetone, the frequency for ultrasonic cleaning is 40 kHz to 80 kHz, and the cleaning time is 10 min to 60 min; the preferred drying equipment is a compressed air dryer, the drying temperature is preferably 40 C. to 80 C., and the drying time is preferably 2 h to 6 h.

Description

4. BRIEF DESCRIPTION OF ACCOMPANY DRAWINGS

[0034] FIG. 1 is a specific flow chart of the amorphous alloy reinforced Cu-based composite coating and composite bulk material and the preparation method thereof of the invention.

5. SPECIFIC EMBODIMENT OF THE INVENTION

[0035] The technical schemes in the embodiments of the invention will be clearly and completely described in combination with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only some of the embodiments of the invention, but not all of the embodiments. Based on the embodiments in this invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this invention.

Embodiment 1

[0036] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising an amorphous alloy reinforced Cu-based composite coating and an amorphous alloy reinforced Cu-based composite bulk material, wherein both the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material comprise at least Cu powder and amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder.

[0037] A proportion of the Cu powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 55% to 95%.

[0038] A proportion of the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder content in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 5% to 45%.

[0039] The particle sizes of both the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material range from 20 m to 50 m, preferably 25 m to 45 m, and more preferably 30 m to 40 m.

Embodiment 2

[0040] Please refer to FIG. 1, a preparation method of the amorphous alloy reinforced Cu-based composite coating and composite bulk material, comprising the following steps: [0041] S1: firstly, sieving the Cu powder particles and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder particles to a specified particle size; [0042] S2: secondly, according to a specified proportion for the composite coating, blending the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder in the above specified proportion; [0043] S3: then, pouring the blended Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder into a powder mixer; [0044] S4: once the Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder are fully mixed, drying mixed powder; [0045] S5: finally, obtaining the processed amorphous alloy reinforced Cu-based composite coating and composite bulk material.

[0046] In S3, the powder mixer used is a V-type powder mixer, and the powder mixer used can also be a three-dimensional powder mixer or a two-dimensional powder mixer, and the mixing speed of the powder mixer is preferably 150 r/min to 300 r/min, more preferably 180 r/min to 270 r/min, and even more preferably 200 r/min to 250 r/min; and the mixing time of the powder mixer is preferably 30 min to 90 min, more preferably 40 min to 80 min, and even more preferably 50 min to 70 min.

[0047] In S4, the drying time for the mixed Cu powder and the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder is preferably 2 h to 6 h, more 3 h to 5 h, and even more preferably 3.5 h to 4.5 h; and drying temperature is preferably 40 C. to 80 C., more preferably 50 C. to 70 C., and even more preferably 55 C. to 65 C.

[0048] In step S4, the Cu powder and the amorphous alloy powder are treated to obtain the mixed powder, and the mixed powder is fed into a powder feed system of a cold spray system for spraying; the travel speed of the spraying is preferably 20 mm/s to 80 mm/s, more preferably 30 mm/s to 70 mm/s, and even more preferably 40 mm/s to 60 mm/s, the thickness of the sprayed composite coating is preferably 300 m to 2000 m, and the thickness of the composite bulk material is preferably 0.8 cm to 1.2 cm.

[0049] The powder feed system comprises at least a receiving device, the receiving device is made of Al alloy substrate, the spraying distance for the spraying process is preferably 20 mm to 40 mm, more preferably 20 mm to 30 mm, and even more preferably 20 mm to 25 mm; [0050] the gas used in the spraying process of the cold spray system is at least one of N.sub.2, Ar, or He, the preferred gas temperature for the spraying is 500 C. to 800 C., and the preferred gas pressure for the spraying is 3 MPa to 6 MPa; the mixed powder collides with the Al alloy substrate under the action of high-pressure gas to cause plastic deformation, and then deposits on the surface of the Al alloy substrate to form a composite coating or composite bulk material.

[0051] The receiving device needs to be pretreated before use, the pretreatment at least includes sandblasting, ultrasonic cleaning, and drying treatments; [0052] pre-treating the Al alloy substrate can remove the oxide film on the surface, increasing the adhesion between the Al alloy substrate and the composite coating or composite bulk material, the coating has low porosity and is dense, which helps form the high-quality composite coating and composite bulk material; [0053] the inlet pressure for the sandblasting treatment is preferably 0.6 MPa to 0.8 MPa, more preferably 0.65 MPa to 0.75 MPa, even more preferably 0.68 MPa to 0.72 MPa; the preferred pressure for the sandblasting process is preferably 0.2 MPa to 0.4 MPa, more preferably 0.25 MPa to 0.35 MPa, even more preferably 0.27 MPa to 0.33 MPa; [0054] the solvent used for ultrasonic cleaning is either ethanol or acetone, the frequency for ultrasonic cleaning is preferably 40 kHz to 80 kHz, more preferably 50 kHz to 70 kHz, even more preferably 55 kHz to 65 kHz; and the cleaning time is preferably 10 min to 60 min, more preferably 15 min to 40 min, even more preferably 20 min to 30 min; [0055] the preferred drying equipment is a compressed air dryer, the drying temperature is preferably 40 C. to 80 C., more preferably 50 C. to 70 C., even more preferably 55 C. to 65 C.; and the drying time is preferably 2 h to 6 h, more preferably 3 h to 5 h, even more preferably 3.5 h to 4.5 h.

[0056] After the spraying process is completed, the composite coating and composite bulk material can be used directly or after undergoing annealing, the annealing temperature is preferably 435 C. to 600 C., more preferably 450 C. to 550 C., and even more preferably 480 C. to 500 C.; the selection of annealing time is based on the principle that the amorphous alloy does not undergo crystallization at a specific annealing temperature, preferably 5 min to 30 min, more preferably 10 min to 25 min, and even more preferably 15 min to 20 min.

Embodiment 3

[0057] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0058] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 95%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 5%; [0059] Step 2: feeding the raw powder materials with a particle size of 35 m into the V-type powder mixer, and mixing evenly at a speed of 250 r/min for 60 min; [0060] Step 3: then drying the mixed powder at 60 C. for 4 h; [0061] Step 4: performing sandblasting treatment on the Al alloy substrate, setting the inlet pressure for sandblasting treatment at 0.7 MPa, and the pressure for sandblasting process at 0.3 MPa; [0062] Step 5: afterward, placing the substrate into an ethanol solvent and performing ultrasonic treatment at 60 kHz for 25 min, then drying at 60 C. for 4 h; [0063] Step 6: feeding the dried powder into the powder feeding system of the cold spray system, using N.sub.2 gas at a temperature of 600 C. and pressure of 4 MPa for spraying; [0064] Step 7: setting the spray receiving device as the pre-treated Al alloy substrate, controlling the spraying distance to be 22 mm and the walking speed to be 50 mm/s; [0065] Step 8: finally, obtaining a composite coating material with a thickness of 800 m.

TABLE-US-00001 TABLE 1 Performance test results of the Cu-based composite coating of embodiment 3 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.2 56.13 188.52 18.75 48.77 composite coating

Embodiment 4

[0066] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0067] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 85%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 15%; a particle size of Cu is 30 m, and a particle size of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 33 m; [0068] Step 2: feeding the above raw powder materials into a three-dimensional powder mixer, and mixing evenly at a speed of 200 r/min for 70 min; [0069] Step 3: then drying the mixed powder at 50 C. for 5 h; [0070] Step 4: performing sandblasting treatment on the Al alloy substrate, setting the inlet pressure for sandblasting treatment at 0.75 MPa, and the pressure for sandblasting process at 0.32 MPa; [0071] Step 5: afterward, placing the substrate into an acetone solvent and performing ultrasonic treatment at 65 kHz for 20 min, then drying at 55 C. for 4.5 h; [0072] Step 6: feeding the dried powder into the powder feed system of the cold spray system, using N.sub.2 gas at a temperature of 600 C. and pressure of 4.5 MPa for spraying; [0073] Step 7: setting the spray receiving device as the pre-treated Al alloy substrate, controlling the spraying distance to be 22 mm and the walking speed to be 50 mm/s; [0074] Step 8: finally, obtaining a composite coating material with a thickness of 1000 m.

TABLE-US-00002 TABLE 2 Performance test results of the Cu-based composite coating of embodiment 4 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.22 78.93 190.64 14.5 47.26 composite coating

Embodiment 5

[0075] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0076] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 75%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 25%; [0077] Step 2: feeding the above raw powder materials with a particle size of 35 m into a three-dimensional powder mixer, and mixing evenly at a speed of 200 r/min for 55 min; then drying the mixed powder at 65 C. for 3 h; [0078] Step 3: performing sandblasting treatment on the Al alloy substrate, setting the inlet pressure for sandblasting treatment at 0.67 MPa, and the pressure for sandblasting process at 0.29 MPa; [0079] Step 4: afterward, placing the substrate into an ethanol solvent and performing ultrasonic treatment at 55 kHz for 30 min, then drying at 65 C. for 3.5 h; [0080] Step 5: feeding the dried powder into the powder feed system of the cold spray system, using N.sub.2 gas at a temperature of 600 C. and pressure of 5 MPa for spraying; [0081] Step 6: setting the spray receiving device as the pre-treated Al alloy substrate, controlling the spraying distance to be 20 mm and the walking speed to be 50 mm/s; [0082] Step 7: finally, obtaining a composite coating material with a thickness of 1100 m.

TABLE-US-00003 TABLE 3 Performance test results of the Cu-based composite coating of embodiment 5 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.7 52.59 185.43 13.4 44.18 composite coating

Embodiment 6

[0083] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0084] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 65%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 35%; a particle size of Cu is 30 m, and a particle size of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 33 m; [0085] Step 2: feeding the above raw powder materials into a two-dimensional powder mixer, and mixing evenly at a speed of 200 r/min for 70 min; then drying the mixed powder at 50 C. for 5 h; [0086] Step 3: performing sandblasting treatment on the Cu substrate, setting the inlet pressure for sandblasting treatment at 0.75 MPa, and the pressure for sandblasting process at 0.32 MPa; [0087] Step 4: afterward, placing the Cu substrate into an acetone solvent and performing ultrasonic treatment at 65 kHz for 20 min, then drying at 55 C. for 4.5 h; [0088] Step 5: feeding the dried powder into the powder feed system of the cold spray system, using Ar gas at a temperature of 600 C. and pressure of 4 MPa for spraying; [0089] Step 6: setting the spray receiving device as the pre-treated Cu substrate, controlling the spraying distance to be 22 mm and the walking speed to be 50 mm/s; [0090] Step 7: finally, obtaining a composite coating material with a thickness of 600 m.

TABLE-US-00004 TABLE 4 Performance test results of the Cu-based composite coating of embodiment 6 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.39 97.62 203.16 12.8 39.97 composite coating

Embodiment 7

[0091] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0092] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 75%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 25%; [0093] Step 2: feeding the above raw powder materials with a particle size of 35 m into a three-dimensional powder mixer, and mixing evenly at a speed of 200 r/min for 55 min; then drying the mixed powder at 65 C. for 3 h; [0094] Step 3: performing sandblasting treatment on the Al alloy substrate, setting the inlet pressure for sandblasting treatment at 0.67 MPa, and the pressure for sandblasting process at 0.29 MPa; [0095] Step 4: afterward, placing the substrate into an ethanol solvent and performing ultrasonic treatment at 55 kHz for 30 min, then drying at 65 C. for 3.5 h; [0096] Step 5: feeding the dried powder into the powder feed system of the cold spray system, using N.sub.2 gas at a temperature of 600 C. and pressure of 4 MPa for spraying; [0097] Step 6: setting the spray receiving device as the pre-treated Al alloy substrate, controlling the spraying distance to be 20 mm and the walking speed to be 50 mm/s; [0098] Step 7: finally, obtaining a composite coating material with a thickness of 1 cm.

TABLE-US-00005 TABLE 5 Performance test results of the Cu-based composite coating of embodiment 7 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.57 48.16 185.43 13 43.37 composite coating

Embodiment 8

[0099] Please refer to FIG. 1, an amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising the following steps: [0100] Step 1: blending the compositions of the composite coat in the following specified proportion, i.e., the mass fraction of Cu 75%, and the mass fraction of amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) is 25%; [0101] Step 2: feeding the above raw powder materials with a particle size of 35 m into a three-dimensional powder mixer, and mixing evenly at a speed of 200 r/min for 55 min; then drying the mixed powder at 65 C. for 3 h; [0102] Step 3: performing sandblasting treatment on the Al alloy substrate, setting the inlet pressure for sandblasting treatment at 0.67 MPa, and the pressure for sandblasting process at 0.29 MPa; [0103] Step 4: afterward, placing the substrate into an ethanol solvent and performing ultrasonic treatment at 55 kHz for 30 min, then drying at 65 C. for 3.5 h; [0104] Step 5: feeding the dried powder into the powder feed system of the cold spray system, using N.sub.2 gas at a temperature of 600 C. and pressure of 4 MPa for spraying; [0105] Step 6: setting the spray receiving device as the pre-treated Al alloy substrate, controlling the spraying distance to be 20 mm and the walking speed to be 50 mm/s; [0106] Step 7: finally, obtaining a composite coating material with a thickness of 1 cm.

[0107] In step 7, the obtained composite bulk material was annealed at 500 C. for 15 min, and the performance of the composite bulk material was tested. The results are shown in Table 6.

TABLE-US-00006 TABLE 6 Performance test results of the Cu-based composite coating of embodiment 8 Wear Shear Micro- rate Density strength hardness (10.sup.5 Conductivity Performance (%) (MPa) (HV) mm.sup.3/Nm) (MS/m) Cu-based 99.57 184.39 93.58 13.3 48.7 composite coating

[0108] Although the embodiments of the invention have been shown and described above, it should be understood that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the claims and their equivalents.