CN115070258B - Zirconium-based amorphous alloy solder and preparation method and application thereof - Google Patents
Zirconium-based amorphous alloy solder and preparation method and application thereof Download PDFInfo
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- CN115070258B CN115070258B CN202210646942.1A CN202210646942A CN115070258B CN 115070258 B CN115070258 B CN 115070258B CN 202210646942 A CN202210646942 A CN 202210646942A CN 115070258 B CN115070258 B CN 115070258B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a zirconium-based amorphous alloy solder, a preparation method and application thereof, wherein the zirconium-based amorphous alloy solder comprises the following components in percentage by weight: 45-60% of Zr, 25-30% of Ag, 10-15% of Ni and the balance of Cu. The zirconium-based amorphous alloy solder provided by the invention can realize reliable connection of brazed silicon carbide ceramics and overcome the defect of poor high-temperature welding strength of silicon carbide joints brazed by active solders such as silver, copper, titanium and the like.
Description
Technical Field
The invention belongs to the technical field of brazing materials, and particularly relates to a zirconium-based amorphous alloy brazing filler metal, and a preparation method and application thereof.
Background
The silicon carbide ceramic has a series of excellent performances such as high temperature resistance, wear resistance, oxidation resistance, high mechanical strength and the like, and particularly has excellent high-temperature mechanical properties (high-temperature strength, creep resistance and the like), so that the silicon carbide ceramic plays an important role in a plurality of important fields such as energy, aviation, aerospace, machinery, chemical industry and the like.
It is well known that any advanced material is really useful only after being processed into a component, and welding is an essential processing means for forming the component. The main difficulties in ceramic welding include chemical factors and physical factors, the former is represented by the necessity of adding active elements into common solder, and the liquid solder is infiltrated on the ceramic and connected through interfacial chemical reaction between the active elements and the ceramic; the latter is manifested in that the great difference in thermal expansion coefficient and elastic modulus between ceramics and metals results in large residual stress at the connecting interface, which adversely affects the joint strength.
Although the silver copper titanium active solder can realize reliable connection during ceramic brazing of silicon carbide and the like, the silicon carbide joint welded by silver copper titanium is difficult to meet the performance requirement under the high-temperature condition in consideration of the fact that the silicon carbide ceramic structural member is generally required to be used under the complex high-temperature working condition.
Disclosure of Invention
Based on the technical problems, the invention provides the zirconium-based amorphous alloy solder, and the preparation method and application thereof, and the zirconium-based amorphous alloy solder not only can realize reliable connection of brazed silicon carbide ceramics, but also can overcome the defect of poor high-temperature welding strength of silicon carbide joints brazed by active solders such as silver, copper, titanium and the like.
The invention provides a zirconium-based amorphous alloy solder, which comprises the following components in percentage by weight: 45-60% of Zr, 25-30% of Ag, 10-15% of Ni and the balance of Cu.
In the invention, zr is taken as a basic alloy component, ag, cu and Ni elements are added to form the multielement Zr-Ag-Ni-Cu alloy solder, the obtained solder has higher amorphous forming capability, the main constituent phase of the solder is a zirconium-based solid solution, which plays a solid solution strengthening role, and the solder has higher strength and fracture strain capacity at room temperature and high temperature, so that the obtained solder has excellent high-temperature performance, thereby greatly improving the high-temperature welding strength performance of the corresponding obtained silicon carbide joint. The amorphous forming capability of the alloy solder is greatly improved by adding a large amount of Zr; the Cu and Ag have low melting points and good wettability, and the fluidity and plasticity of the solder are greatly improved while the melting point of the solder is effectively reduced; in addition, cu and Ag are used as alloy components of the zirconium-based brazing filler metal, and the content of the alloy components is controlled within a certain content range, so that the affinity of the zirconium-based brazing filler metal and silicon carbide ceramic can be improved, and the wettability of the brazing filler metal to the silicon carbide ceramic alloy is improved; meanwhile, ni has excellent corrosion resistance, can be mutually dissolved with Zr in liquid and solid states, and is an essential element for forming Zr-Ag-Ni-Cu amorphous alloy; in addition, ni is also required to be contained in a certain amount as an alloy component of the zirconium-based brazing filler metal, and as the Ni content in the brazing filler metal increases or decreases, the plasticity and toughness of the brazing filler metal decrease, and the brazing joint becomes brittle.
Preferably, the solder composition further comprises: m is 0.2-2%, M is at least one of Si, ge or Sb.
In the invention, the fluidity and oxidation resistance of the alloy solder can be further improved by adding Si, ge or Sb.
The invention provides a preparation method of the zirconium-based amorphous alloy solder, which comprises the following steps: proportioning Zr, ag, ni, cu and/or M simple substances according to the brazing filler metal composition, uniformly smelting, and pouring into a water-cooling die to prepare an amorphous alloy bar; and atomizing the obtained amorphous alloy bar, and preparing fine powder to obtain the zirconium-based amorphous alloy solder.
Preferably, the purity of Zr, ag, ni, cu and M is 99.95% or more.
Preferably, the smelting is carried out under the protection of inert gas, and the diameter of the obtained amorphous alloy bar is 30-80mm.
Preferably, before the obtained amorphous alloy bar is atomized and milled, the method further comprises the step of carrying out heat treatment on the obtained amorphous alloy bar, and specifically comprises the following steps: heating the obtained amorphous alloy bar to 700-720 ℃, preserving heat for 1-3h, and then cooling to room temperature in ice water.
In the invention, before the obtained amorphous alloy bar is atomized and milled, the amorphous alloy bar is subjected to heat treatment, so that the amorphous form of the obtained alloy solder is ensured.
The invention also provides application of the brazing filler metal in brazing silicon carbide ceramics and titanium alloy.
Preferably, the application comprises: and (3) preparing solder paste from the solder fine powder, coating the solder fine powder on a welding joint of the silicon carbide ceramic and the titanium alloy, and performing vacuum heating brazing to finish welding of the silicon carbide ceramic and the titanium alloy.
Preferably, the coating thickness is 10-50 μm, and the coating process is a screen printing coating process.
In the invention, the thickness of the welding seam can be ensured by adopting a screen printing coating process.
Preferably, the vacuum heating brazing specifically includes: heating to 490-510 ℃ at a speed of 1-3 ℃/min in a vacuum degreasing furnace, preserving heat for 15-25min, cooling to room temperature along with the furnace, taking out, heating to 740-770 ℃ in a vacuum brazing furnace, preserving heat for 10-30min, cooling to 700-720 ℃ at a speed of 8-10 ℃/min, and cooling to room temperature along with the furnace.
According to the invention, the welding strength of the silicon carbide ceramic is guaranteed by controlling the technological parameters of the vacuum heating brazing.
Compared with the prior art, the invention has the following beneficial effects:
(1) The brazing temperature of the zirconium-based amorphous alloy brazing filler metal is 740-770 ℃, the melting temperature of the brazing filler metal is low, and the brazing filler metal is uniformly melted.
(2) The zirconium-based amorphous alloy solder can accelerate the diffusion and interface reaction of atoms in the high-temperature connection process, has strong wetting and spreading capacity, has better amorphous forming capacity than the conventional silver-copper-titanium active solder, can wet silicon carbide and other matrix materials, reduces residual stress in the obtained soldered joint, and greatly improves the bonding strength of the joint under the high-temperature condition.
(3) The preparation method of the zirconium-based amorphous alloy solder is simple, convenient and quick to implement, and the preparation of the solder can be repeatedly reproduced, so that the zirconium-based amorphous alloy solder is convenient to popularize and apply.
Drawings
FIG. 1 is an X-ray diffraction pattern of a zirconium based amorphous alloy solder as described in example 1 of the present invention.
Fig. 2 is a scanning electron microscope image of the zirconium-based amorphous alloy solder of example 1 of the present invention.
Detailed Description
The present invention will be described in detail by way of specific examples, which should be clearly set forth for the purpose of illustration and are not to be construed as limiting the scope of the present invention.
Example 1
The embodiment provides a zirconium-based amorphous alloy solder, which comprises the following components in percentage by weight: zr 52%, ag 27%, ni 12% and Cu 9%.
The preparation method of the zirconium-based amorphous alloy solder comprises the following steps:
(1) Weighing Zr, ag, ni and Cu simple substances according to the weight percentage, wherein the purity of the Zr, ag, ni and Cu simple substances is 99.99 percent;
(2) Adding the simple substances of Zr, ag, ni and Cu obtained in the step (1) into a suspension smelting furnace, vacuumizing, filling high-purity argon, heating and smelting uniformly, pouring the obtained molten liquid into a water-cooling mold, rapidly water-cooling to prepare an amorphous alloy bar with the diameter of 50mm, adding the amorphous alloy bar into a heat treatment furnace, heating to 720 ℃, preserving heat for 2 hours, and cooling to room temperature in ice water;
(3) And (3) turning the amorphous alloy bar obtained in the step (2) into a certain size specification, then putting the amorphous alloy bar into a crucible-free gas atomization furnace, vacuumizing, atomizing by adopting argon to prepare powder, and sorting to prepare fine powder with a certain granularity, thus obtaining the zirconium-based amorphous alloy solder.
FIG. 1 is an X-ray diffraction pattern of the zirconium-based amorphous alloy brazing filler metal, which is an amorphous structure alloy brazing filler metal, as can be seen from FIG. 1; fig. 2 is a scanning electron microscope image of the zirconium-based amorphous alloy solder, and as can be seen from fig. 2, the solder has good sphericity, smooth surface and concentrated sphere particle size.
91wt% of the zirconium-based amorphous alloy solder, 3wt% of ethyl cellulose, 3wt% of triethanolamine, 2.5wt% of terpineol and 0.5wt% of polyamide wax are prepared into soldering paste, and the soldering method by using the obtained soldering paste comprises the following steps of:
before brazing, sequentially carrying out ultrasonic cleaning on titanium alloy and silicon carbide ceramic serving as samples to be welded in an acetone solution and an ethanol solution for 15min respectively, taking out and drying; placing the soldering paste on a polyurethane wire mesh, placing the obtained polyurethane wire mesh on the surface of the titanium alloy, and uniformly coating the soldering paste on the joint of the titanium alloy and silicon carbide by utilizing ultrasonic waves, wherein the thickness of the joint is 30 mu m, thereby obtaining the whole part to be welded; the whole part to be welded is placed in a vacuum degreasing furnace, slowly heated to 500 ℃ at 2 ℃/min and kept at the temperature for 20min, taken out after being cooled, placed in a vacuum brazing furnace for vacuum brazing, and the vacuum degree reaches 10 percent - 2 After Pa, the temperature is raised to 750 ℃, the temperature is kept for 20min, then the temperature is cooled to 720 ℃ at 10 ℃/min, and the temperature is cooled to room temperature along with the furnace, thus completing the welding.
It is known that when the zirconium-based amorphous alloy solder is used for vacuum brazing of silicon carbide ceramic and titanium alloy, a good metallurgical bond is formed in a welding area of the silicon carbide ceramic and the titanium alloy, a brazing seam is fully filled, and a tensile strength test is carried out by a tensile testing machine according to GB/T11363-2008 brazing joint strength test method, so that the tensile strength of a welding joint at 350 ℃ is 180MPa.
Example 2
The embodiment provides a zirconium-based amorphous alloy solder, which comprises the following components in percentage by weight: 45% of Zr, 30% of Ag, 10% of Ni and 15% of Cu.
The preparation method of the zirconium-based amorphous alloy solder comprises the following steps:
(1) Weighing Zr, ag, ni and Cu simple substances according to the weight percentage, wherein the purity of the Zr, ag, ni and Cu simple substances is 99.99 percent;
(2) Adding the simple substances of Zr, ag, ni and Cu obtained in the step (1) into a suspension smelting furnace, vacuumizing, filling high-purity argon, heating and smelting uniformly, pouring the obtained molten liquid into a water-cooling mold, rapidly water-cooling to prepare an amorphous alloy bar with the diameter of 50mm, adding the amorphous alloy bar into a heat treatment furnace, heating to 700 ℃, preserving heat for 3 hours, and cooling to room temperature in ice water;
(3) And (3) turning the amorphous alloy bar obtained in the step (2) into a certain size specification, then putting the amorphous alloy bar into a crucible-free gas atomization furnace, vacuumizing, atomizing by adopting argon to prepare powder, and sorting to prepare fine powder with a certain granularity, thus obtaining the zirconium-based amorphous alloy solder.
91wt% of the zirconium-based amorphous alloy solder, 3wt% of ethyl cellulose, 3wt% of triethanolamine, 2.5wt% of terpineol and 0.5wt% of polyamide wax are prepared into soldering paste, and the soldering method by using the obtained soldering paste comprises the following steps of:
before brazing, sequentially carrying out ultrasonic cleaning on titanium alloy and silicon carbide ceramic serving as samples to be welded in an acetone solution and an ethanol solution for 15min respectively, taking out and drying; placing the soldering paste on a polyurethane wire mesh, placing the obtained polyurethane wire mesh on the surface of the titanium alloy, and uniformly coating the soldering paste on the joint of the titanium alloy and silicon carbide by utilizing ultrasonic waves, wherein the thickness of the joint is 30 mu m, thereby obtaining the whole part to be welded; the part to be weldedThe whole body is placed in a vacuum degreasing furnace, slowly heated to 500 ℃ at 2 ℃/min and kept for 20min, taken out after being cooled, placed in a vacuum brazing furnace for vacuum brazing, and the vacuum degree reaches 10 percent - 2 After Pa, the temperature is raised to 750 ℃, the temperature is kept for 20min, then the temperature is cooled to 720 ℃ at 10 ℃/min, and the temperature is cooled to room temperature along with the furnace, thus completing the welding.
It is known that when the zirconium-based amorphous alloy solder is used for vacuum brazing of silicon carbide ceramic and titanium alloy, a good metallurgical bond is formed in a welding area of the silicon carbide ceramic and the titanium alloy, a brazing seam is fully filled, and a tensile strength test is carried out by a tensile testing machine according to GB/T11363-2008 brazing joint strength test method, so that the tensile strength of a welding joint at 350 ℃ is 158MPa.
Example 3
The embodiment provides a zirconium-based amorphous alloy solder, which comprises the following components in percentage by weight: zr 60%, ag 25%, ni 10% and Cu 5%.
The preparation method of the zirconium-based amorphous alloy solder comprises the following steps:
(1) Weighing Zr, ag, ni and Cu simple substances according to the weight percentage, wherein the purity of the Zr, ag, ni and Cu simple substances is 99.99 percent;
(2) Adding the simple substances of Zr, ag, ni and Cu obtained in the step (1) into a suspension smelting furnace, vacuumizing, filling high-purity argon, heating and smelting uniformly, pouring the obtained molten liquid into a water-cooling mold, rapidly water-cooling to prepare an amorphous alloy bar with the diameter of 50mm, adding the amorphous alloy bar into a heat treatment furnace, heating to 720 ℃, preserving heat for 1h, and cooling to room temperature in ice water;
(3) And (3) turning the amorphous alloy bar obtained in the step (2) into a certain size specification, then putting the amorphous alloy bar into a crucible-free gas atomization furnace, vacuumizing, atomizing by adopting argon to prepare powder, and sorting to prepare fine powder with a certain granularity, thus obtaining the zirconium-based amorphous alloy solder.
91wt% of the zirconium-based amorphous alloy solder, 3wt% of ethyl cellulose, 3wt% of triethanolamine, 2.5wt% of terpineol and 0.5wt% of polyamide wax are prepared into soldering paste, and the soldering method by using the obtained soldering paste comprises the following steps of:
before brazing, sequentially carrying out ultrasonic cleaning on titanium alloy and silicon carbide ceramic serving as samples to be welded in an acetone solution and an ethanol solution for 15min respectively, taking out and drying; placing the soldering paste on a polyurethane wire mesh, placing the obtained polyurethane wire mesh on the surface of the titanium alloy, and uniformly coating the soldering paste on the joint of the titanium alloy and silicon carbide by utilizing ultrasonic waves, wherein the thickness of the joint is 30 mu m, thereby obtaining the whole part to be welded; the whole part to be welded is placed in a vacuum degreasing furnace, slowly heated to 500 ℃ at 2 ℃/min and kept at the temperature for 20min, taken out after being cooled, placed in a vacuum brazing furnace for vacuum brazing, and the vacuum degree reaches 10 percent - 2 After Pa, the temperature is raised to 750 ℃, the temperature is kept for 20min, then the temperature is cooled to 720 ℃ at 10 ℃/min, and the temperature is cooled to room temperature along with the furnace, thus completing the welding.
It is known that when the zirconium-based amorphous alloy solder is used for vacuum brazing of silicon carbide ceramic and titanium alloy, a good metallurgical bond is formed in a welding area of the silicon carbide ceramic and the titanium alloy, a brazing seam is fully filled, and a tensile strength test is carried out by a tensile testing machine according to GB/T11363-2008 brazing joint strength test method, so that the tensile strength of a welding joint at 350 ℃ is measured to be 164MPa.
Example 4
The embodiment provides a zirconium-based amorphous alloy solder, which comprises the following components in percentage by weight: zr 52%, ag 27%, ni 12%, si 0.6%, sb 0.4% and Cu 8%.
The preparation method of the zirconium-based amorphous alloy solder comprises the following steps:
(1) Weighing Zr, ag, ni, si, sb and a Cu simple substance according to the weight percentage, wherein the purity of Zr, ag, ni, si, sb and the purity of the Cu simple substance are 99.99 percent;
(2) Adding Zr, ag, ni, si, sb and Cu simple substance obtained in the step (1) into a suspension smelting furnace, vacuumizing, filling high-purity argon, heating and smelting uniformly, pouring the obtained molten liquid into a water-cooling mold, rapidly cooling the molten liquid into water to prepare an amorphous alloy bar with the diameter of 50mm, adding the amorphous alloy bar into a heat treatment furnace, heating to 720 ℃, preserving heat for 2 hours, and cooling to room temperature in ice water;
(3) And (3) turning the amorphous alloy bar obtained in the step (2) into a certain size specification, then putting the amorphous alloy bar into a crucible-free gas atomization furnace, vacuumizing, atomizing by adopting argon to prepare powder, and sorting to prepare fine powder with a certain granularity, thus obtaining the zirconium-based amorphous alloy solder.
91wt% of the zirconium-based amorphous alloy solder, 3wt% of ethyl cellulose, 3wt% of triethanolamine, 2.5wt% of terpineol and 0.5wt% of polyamide wax are prepared into soldering paste, and the soldering method by using the obtained soldering paste comprises the following steps of:
before brazing, sequentially carrying out ultrasonic cleaning on titanium alloy and silicon carbide ceramic serving as samples to be welded in an acetone solution and an ethanol solution for 15min respectively, taking out and drying; placing the soldering paste on a polyurethane wire mesh, placing the obtained polyurethane wire mesh on the surface of the titanium alloy, and uniformly coating the soldering paste on the joint of the titanium alloy and silicon carbide by utilizing ultrasonic waves, wherein the thickness of the joint is 30 mu m, thereby obtaining the whole part to be welded; the whole part to be welded is placed in a vacuum degreasing furnace, slowly heated to 500 ℃ at 2 ℃/min and kept at the temperature for 20min, taken out after being cooled, placed in a vacuum brazing furnace for vacuum brazing, and the vacuum degree reaches 10 percent - 2 After Pa, the temperature is raised to 750 ℃, the temperature is kept for 20min, then the temperature is cooled to 720 ℃ at 10 ℃/min, and the temperature is cooled to room temperature along with the furnace, thus completing the welding.
It is known that when the zirconium-based amorphous alloy brazing filler metal is used for vacuum brazing of silicon carbide ceramic and titanium alloy, a good metallurgical bond is formed in a welding area of the silicon carbide ceramic and the titanium alloy, a brazing seam is fully filled, and a tensile strength test is performed by a tensile testing machine according to GB/T11363-2008 brazing joint strength test method, so that the tensile strength of a welding joint at 350 ℃ is 187MPa.
Comparative example 1
This comparative example uses silver copper titanium active solder (Ag 68.8%, cu 26.7%, ti 4.5%), and the solder was tested for its braze effect and tensile strength on silicon carbide ceramics and titanium alloys using the same solder paste composition as in example 1, and braze and test methods.
It is found that, when the silver-copper-titanium active solder is used for vacuum brazing of silicon carbide ceramics and titanium alloy, the welded region forms a good metallurgical bond, but the tensile strength of the welded joint at 350 ℃ is only 35MPa.
Comparative example 2
The comparative example used a zirconium-based braze, but included in weight percent: zr40%, ag 28%, ni 12%, and Cu 20%, and the brazing effect and tensile strength of the brazing filler metal on silicon carbide ceramics and titanium alloys were tested by the same brazing filler metal preparation method and the same solder paste composition and brazing and test method as in example 1.
It was found that when the above zirconium-based brazing filler metal was used to vacuum braze silicon carbide ceramic and titanium alloy, the weld zone formed a good metallurgical bond, but the tensile strength of the welded joint at 350 ℃ was only 106MPa.
Comparative example 3
The comparative example used a zirconium-based braze, but included in weight percent: zr 55%, ag 22%, ni 18% and Cu 5%, and the brazing effect and tensile strength of the brazing filler metal to silicon carbide ceramics and titanium alloys were tested by the same brazing filler metal preparation method and the same paste composition and brazing and test method as in example 1.
It was found that when the above zirconium-based brazing filler metal was used to vacuum braze silicon carbide ceramic and titanium alloy, the weld zone formed a good metallurgical bond, but the tensile strength of the welded joint at 350 ℃ was only 129MPa.
From the above examples and comparative examples, it can be seen that when the zirconium-based amorphous alloy brazing filler metal of the present invention is used for vacuum brazing silicon carbide ceramics and titanium alloys, the joint high temperature performance is far higher than that of silver copper titanium active brazing filler metal, and the formulation composition is different from that of the zirconium-based brazing filler metal of the present invention.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The zirconium-based amorphous alloy brazing filler metal is characterized by comprising the following components in percentage by weight: 45-60% of Zr, 25-30% of Ag, 10-15% of Ni and the balance of Cu;
the solder composition comprises the following components in percentage by weight: m is 0.2-2%, M is at least one of Si, ge or Sb;
the preparation method of the zirconium-based amorphous alloy solder comprises the following steps: preparing Zr, ag, ni, cu and M simple substances according to the brazing filler metal composition, uniformly smelting, and pouring into a water-cooling die to prepare an amorphous alloy bar; atomizing the obtained amorphous alloy bar, and preparing fine powder to obtain the zirconium-based amorphous alloy solder;
before the obtained amorphous alloy bar is atomized and milled, the method further comprises the step of carrying out heat treatment on the obtained amorphous alloy bar, and specifically comprises the following steps: heating the obtained amorphous alloy bar to 700-720 ℃, preserving heat for 1-3h, and then cooling to room temperature in ice water.
2. The zirconium based amorphous alloy brazing filler metal of claim 1, wherein the purity of both Zr, ag, ni, cu and elemental M is 99.95% or more.
3. Zirconium-based amorphous alloy brazing filler metal according to claim 1 or 2, wherein the smelting is carried out under the protection of inert gas, and the diameter of the obtained amorphous alloy rod is 30-80mm.
4. Use of the braze of claim 1 in brazing silicon carbide ceramics and titanium alloys.
5. Use of the braze according to claim 4 for brazing silicon carbide ceramics and titanium alloys, comprising: and (3) preparing solder paste from the solder fine powder, coating the solder fine powder on a welding joint of the silicon carbide ceramic and the titanium alloy, and performing vacuum heating brazing to finish welding of the silicon carbide ceramic and the titanium alloy.
6. Use of a braze according to claim 5 for brazing silicon carbide ceramics and titanium alloys, characterized in that the coating thickness is 10-50 μm and the coating process is a screen printing coating process.
7. Use of a braze according to claim 5 or 6 for brazing silicon carbide ceramics and titanium alloys, characterized in that the vacuum heated brazing comprises in particular: heating to 490-510 ℃ at a speed of 1-3 ℃/min in a vacuum degreasing furnace, preserving heat for 15-25min, cooling to room temperature along with the furnace, taking out, heating to 740-770 ℃ in a vacuum brazing furnace, preserving heat for 10-30min, cooling to 700-720 ℃ at a speed of 8-10 ℃/min, and cooling to room temperature along with the furnace.
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| KR101039361B1 (en) * | 2008-12-09 | 2011-06-09 | 한국수력원자력 주식회사 | Low temperature joining method between Ti/Ti-based alloys having a bonding strength higher than those of base metals |
| CN106271213A (en) * | 2015-05-22 | 2017-01-04 | 成都飞机工业（集团）有限责任公司 | A kind of titanium-zirconium-copper-nickel-based solder for titanium alloy soldering |
| CN106346168B (en) * | 2016-11-10 | 2018-07-03 | 江苏科技大学 | Sticky brazing filler material that 304 stainless steels are connect with aluminium oxide ceramics and preparation and method for welding |
| CN106392363B (en) * | 2016-12-06 | 2020-02-21 | 北京航空航天大学 | Titanium-zirconium-based amorphous alloy brazing filler metal with low Cu and Ni contents and without Si element and preparation method thereof |
| CN110303216A (en) * | 2019-05-09 | 2019-10-08 | 重庆师范大学 | Zirconium-based metallic glass fusion material and preparation method thereof |
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| US6530971B1 (en) * | 2001-01-29 | 2003-03-11 | General Electric Company | Nickel-base braze material and braze repair method |
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