CN113996796B - Preparation method of nickel-based as-cast brazing powder - Google Patents
Preparation method of nickel-based as-cast brazing powder Download PDFInfo
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- CN113996796B CN113996796B CN202111299199.9A CN202111299199A CN113996796B CN 113996796 B CN113996796 B CN 113996796B CN 202111299199 A CN202111299199 A CN 202111299199A CN 113996796 B CN113996796 B CN 113996796B
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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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
- B23K35/3033—Ni 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
- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Chemical & Material Sciences (AREA)
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to the technical field of solder preparation, in particular to a preparation method of nickel-based as-cast brazing powder. The preparation method provided by the invention comprises the following steps: taking scraps of the nickel-based as-cast brazing filler metal, and performing ball milling to obtain the nickel-based as-cast brazing powder; the nickel-based as-cast brazing filler metal comprises B and/or Si, and further comprises W and/or Mo. According to the invention, the nickel-based as-cast brazing powder is subjected to scrap taking, so that a part of enrichment phases in as-cast structures can be effectively crushed; and then, preparing powder by a ball milling mode, wherein in the ball milling process, the crushed metal chips and the grinding balls are violently collided and crushed for a long time, so that the powder particles are repeatedly subjected to cold welding and fracture, atoms in the powder particles are further diffused, and further the alloyed powder with uniform components is obtained. Meanwhile, the preparation method has low requirements on the size and defects of the nickel-based as-cast brazing filler metal, and the operation of the chip taking and ball milling processes is simple, so that the preparation method is suitable for quickly preparing the nickel-based brazing powder at low cost.
Description
Technical Field
The invention relates to the technical field of solder preparation, in particular to a preparation method of nickel-based as-cast brazing powder.
Background
In the current nickel-based high-temperature alloy brazing research, ni-Cr-B or Ni-Cr-Si-B alloy brazing filler metal is generally adopted, the effect of lowering the melting point is achieved by adding B and/or Si and properly adjusting the addition amount of the B and/or Si, the high-temperature strength is improved by properly increasing W and/or Mo and other elements, but the addition of B, si, W and Mo enables the brazing filler metal to easily form an enrichment phase in the smelting process, such as a hard and brittle Si-rich eutectic phase, and active B easily forms a boride phase at a grain boundary, so that the prepared cast-state brazing filler metal is hard and brittle due to uneven components in the smelting process of the brazing filler metal.
During powder preparation, the prior art generally adopts modes of gas atomization powder preparation, rotary electrode powder preparation and the like to have extremely high requirements on the dimensional accuracy, the surface state, the casting defects and the like of as-cast solder, in order to meet the corresponding requirements, strict control needs to be carried out on the aspects of smelting, machining and the like, the preparation cost is high, and in the powder preparation process, the enrichment phase existing in the as-cast solder is difficult to eliminate.
Disclosure of Invention
The invention aims to provide a preparation method of nickel-based as-cast brazing powder. The nickel-based as-cast brazing powder prepared by the preparation method is low in cost and can effectively eliminate an enrichment phase.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of nickel-based as-cast brazing powder, which comprises the following steps:
taking scraps of the nickel-based as-cast brazing filler metal, and performing ball milling to obtain the nickel-based as-cast brazing powder;
the nickel-based as-cast brazing filler metal comprises B and/or Si and also comprises W and/or Mo.
Preferably, when the nickel-based as-cast brazing filler metal comprises B, the mass percentage of B in the nickel-based as-cast brazing filler metal is 1.0-4.0%;
when the nickel-based as-cast solder comprises Si, the mass percentage of the Si in the nickel-based as-cast solder is 0.5-4.0%;
when the nickel-based as-cast brazing filler metal comprises W, the mass percentage of the W in the nickel-based as-cast brazing filler metal is 3.5-6.5%;
when the nickel-based as-cast solder comprises Mo, the mass percentage of the Mo in the nickel-based as-cast solder is 3.0-7.0%.
Preferably, the nickel-based as-cast brazing filler metal comprises the following components in percentage by mass: 0.05 to 0.1 percent of C, 2.5 to 4.0 percent of Si, 3.0 to 4.0 percent of Mo, 7.0 to 8.0 percent of Ti, 2.5 to 6.5 percent of Al, 1.0 to 2.5 percent of B, 9.0 to 10.0 percent of Co, 0.05 to 0.20 percent of Fe, 0.1 to 1.5 percent of Hf0.02 to 0.2 percent of Re, 0.02 to 0.2 percent of Ta, 3.5 to 4.5 percent of W, 1.0 to 13.5 percent of Cr and the balance of Ni.
Preferably, the rotation speed of a lathe spindle used for taking the chips is 40-60 r/min, the feed amount is 0.008-0.012 mm/r, and the cutting depth is 0.4-0.5 mm.
Preferably, the rotation speed of the ball mill is 400-500 r/min, the time is 7-9 h, and the ball-to-material ratio is (10-12): 1.
preferably, the ball milling mode is wet ball milling.
Preferably, the materials of the ball milling tank and the ball milling beads adopted by the ball milling are tungsten carbide.
Preferably, drying is further included after the ball milling;
the drying temperature is 80 ℃, and the drying time is 8-10 h.
The invention provides a preparation method of nickel-based as-cast brazing powder, which comprises the following steps: taking scraps of the nickel-based as-cast brazing filler metal, and performing ball milling to obtain the nickel-based as-cast brazing powder; the nickel-based as-cast brazing filler metal comprises B and/or Si, and further comprises W and/or Mo. According to the invention, the nickel-based as-cast brazing powder is subjected to scrap taking, so that part of enriched phases (such as Si-enriched eutectic phases) in as-cast structures can be effectively crushed; and then, preparing powder by a ball milling mode, wherein in the ball milling process, the crushed metal chips and the grinding balls are violently collided and crushed for a long time, so that the powder particles are repeatedly subjected to cold welding and fracture, atoms in the powder particles are further diffused, and further the alloyed powder with uniform components is obtained. Meanwhile, the preparation method has low requirements on the size and defects of the nickel-based as-cast brazing filler metal, and the chip taking and ball milling process is simple to operate, so that the preparation method is suitable for quickly preparing the nickel-based brazing powder at low cost.
Drawings
FIG. 1 is a microstructure of the nickel-based as-cast braze described in example 1;
FIG. 2 is a back-scattered electron image of the nickel-based as-cast braze powder prepared in example 1;
FIG. 3 is a microstructure of the nickel-based as-cast braze described in example 2;
FIG. 4 is a back-scattered electron image of the nickel-based as-cast braze powder prepared in example 2;
FIG. 5 is a microstructure view of the nickel-based as-cast braze described in example 3;
FIG. 6 is a back-scattered electron image of the nickel-based as-cast braze powder prepared in example 3;
FIG. 7 is a microstructure photograph of a weld obtained in test example 1;
FIG. 8 is a fiber texture map of the nickel-based as-cast brazing powder prepared in comparative example 1;
FIG. 9 is a microstructure photograph of a weld obtained in test example 2.
Detailed Description
The invention provides a preparation method of nickel-based as-cast brazing powder, which comprises the following steps:
taking scraps of the nickel-based as-cast brazing filler metal, and performing ball milling to obtain the nickel-based as-cast brazing powder;
the nickel-based as-cast brazing filler metal comprises B and/or Si and also comprises W and/or Mo.
In the present invention, all the starting materials for the preparation are commercially available products known to those skilled in the art unless otherwise specified.
In the invention, when the nickel-based as-cast brazing filler metal comprises B, the mass percentage of B in the nickel-based as-cast brazing filler metal is preferably 1.0-4.0%, and more preferably 1.3-2.1%;
when the nickel-based as-cast brazing filler metal comprises Si, the mass percentage of the Si in the nickel-based as-cast brazing filler metal is preferably 0.5-4.0%, and more preferably 3.0-3.4%;
when the nickel-based as-cast brazing filler metal comprises W, the mass percentage of the W in the nickel-based as-cast brazing filler metal is preferably 3.5-6.5%, and more preferably 3.8-4.2%;
when the nickel-based as-cast solder comprises Mo, the mass percentage of the Mo in the nickel-based as-cast solder is preferably 3.0-7.0%, and more preferably 3.2-3.5%.
In the invention, the nickel-based as-cast brazing filler metal preferably comprises the following components in percentage by mass: 0.05 to 0.1 percent of C, 2.5 to 4.0 percent of Si, 3.0 to 4.0 percent of Mo, 7.0 to 8.0 percent of Ti, 2.5 to 6.5 percent of Al, 1.0 to 2.5 percent of B, 9.0 to 10.0 percent of Co, 0.05 to 0.20 percent of Fe, 0.1 to 1.5 percent of Hf0, 0.02 to 0.2 percent of Re, 0.02 to 0.2 percent of Ta0, 3.5 to 4.5 percent of W, 1.0 to 13.0 percent of Cr and the balance of Ni; more preferably comprises the following components: 0.06 to 0.08 percent of C, 3.0 to 3.4 percent of Si, 3.2 to 3.5 percent of Mo, 7.3 to 7.6 percent of Ti, 2.8 to 6.2 percent of Al, 1.3 to 2.1 percent of B, 9.6 to 10.0 percent of Co, 0.13 to 0.18 percent of Fe, 0.6 to 1.2 percent of Hf0, 0.07 to 0.16 percent of Re, 0.07 to 0.13 percent of Ta0, 3.8 to 4.2 percent of W, 1.1 to 12.0 percent of Cr and the balance of Ni.
The preparation process of the nickel-based as-cast brazing filler metal is not limited in any way, and the nickel-based as-cast brazing filler metal can be prepared conventionally by adopting a process well known to a person skilled in the art.
In the invention, the scrap taking is preferably carried out on the nickel-based as-cast brazing filler metal by adopting a lathe; the rotating speed of a lathe spindle for taking scraps is preferably 40-60 r/min, more preferably 45-55 r/min, and most preferably 48-52 r/min; the feeding amount is preferably 0.008 to 0.012mm/r, more preferably 0.009 to 0.011mm/r; the cut is preferably 0.4 to 0.5mm, more preferably 0.43 to 0.45mm.
In the invention, the rotation speed of the ball mill is preferably 400-500 r/min, more preferably 420-480 r/min, and most preferably 430-450 r/min; the time is preferably 7 to 9 hours, and more preferably 7.6 to 8.2 hours; the ball-material ratio is preferably (10-12): 1, more preferably (10.8 to 11.5): 1. in the invention, the ball-to-material ratio is the mass ratio of the ball grinding beads to the nickel-based as-cast brazing filler metal. In the invention, the ball milling mode is preferably wet ball milling; the ball milling medium of the wet ball milling is preferably absolute ethyl alcohol; the amount of the absolute ethyl alcohol used in the present invention is not limited in any way, and may be any amount known to those skilled in the art. In the present invention, the anhydrous ethanol serves to prevent overheating during ball milling. In the present invention, the ball milling is preferably carried out in a planetary ball mill.
After the ball milling, the invention also preferably comprises drying, wherein the drying temperature is preferably 80 ℃, and the drying time is preferably 8-10 h. In the present invention, the drying is preferably performed in an oven.
After the drying is completed, the present invention also preferably includes sieving, the sieve preferably having a sieve mesh diameter of 100 to 200 mesh, more preferably 120 to 180 mesh.
The following examples are provided to illustrate the preparation of the nickel-based as-cast brazing powder according to the present invention, but they should not be construed as limiting the scope of the present invention.
Example 1
The nickel-based as-cast brazing filler metal comprises the following components: 0.1% of C, 3.5% of Si, 3.5% of Mo, 7.5% of Ti, 3.2% of Al, 1.8% of B, 9.5% of Co, 0.15% of Fe, 0.6% of Hf0.6%, 0.08% of Re, 0.09% of Ta, 4.0% of W, 11.5% of Cr and the balance of Ni, the microstructure being as shown in FIG. 1 (the nickel-based as-cast solder contains a large amount of a skeletal Si-rich eutectic phase, i.e., an enriched phase, formed by enrichment of Si, mo, W and the like);
taking scraps of the nickel-based as-cast brazing filler metal by using a lathe, wherein the rotating speed of a main shaft of the lathe is 50r/min, the feeding amount is 0.01mm/r, and the cutting depth is 0.5mm; performing ball milling on a planet ball mill by using a tungsten carbide ball milling tank and ball milling beads, wherein the ball milling medium is absolute ethyl alcohol, the ball-material ratio is 10, the rotating speed is 400r/min, and the time is 8h; placing the ball-milled material in an oven, drying for 8 hours at 80 ℃, and sieving with a 160-mesh screen to obtain the nickel-based as-cast brazing powder;
fig. 2 is a back-scattered electron image of the nickel-based as-cast brazing powder, and as can be seen from fig. 2, the prepared nickel-based as-cast brazing powder has a uniform particle size, and compared with fig. 1, the bulk skeletal Si-rich eutectic phase ball-milled phase in the as-cast brazing filler metal is significantly reduced;
example 2
The nickel-based as-cast brazing filler metal comprises the following components: c0.1%, si 2.5%, mo 3.5%, ti 7.5%, al 3.2%, B1.5%, co 9.5%, fe 0.15%, hf0.6%, re 0.08%, ta 0.09%, W4.0%, cr 13.5%, and balance Ni, the microstructure being as shown in fig. 3 (the nickel-based as-cast solder contains a large amount of a skeletal Si-rich eutectic phase formed by enrichment of Si, mo, W, and the like, i.e., an enriched phase);
the nickel-based as-cast brazing filler metal is subjected to scrap taking by using a lathe, the rotating speed of a main shaft of the lathe is 50r/min, the feeding amount is 0.01mm/r, and the cutting amount is 0.5mm; performing ball milling on a planet ball mill by using a tungsten carbide ball milling tank and ball milling beads, wherein the ball milling medium is absolute ethyl alcohol, the ball-material ratio is 10, the rotating speed is 400r/min, and the time is 8h; placing the ball-milled material in an oven for drying at 80 ℃ for 8h, and then sieving the material through a 160-mesh sieve to obtain the nickel-based as-cast brazing powder;
fig. 4 is a back-scattered electron image of the nickel-based as-cast brazing powder, and as can be seen from fig. 4, the particle size of the prepared nickel-based as-cast brazing powder is relatively uniform, and compared with fig. 3, the bulk skeletal Si-rich eutectic phase ball-milling phase existing in the as-cast brazing filler metal is significantly reduced.
Example 3
The nickel-based as-cast brazing filler metal comprises the following components: 0.1% of C, 3.5% of Si, 3.5% of Mo, 7.5% of Ti, 3.2% of Al, 1.0% of B, 9.5% of Co, 0.15% of Fe, 0.6% of Hf0.6%, 0.08% of Re, 0.09% of Ta, 4.0% of W, 13.0% of Cr and the balance of Ni, the microstructure being as shown in FIG. 5 (the nickel-based as-cast solder contains a large amount of a skeletal Si-rich eutectic phase, i.e., an enriched phase, formed by enrichment of Si, mo, W and the like);
the nickel-based as-cast brazing filler metal is subjected to chip removal by a lathe, the rotating speed of a main shaft of the lathe is 52r/min, the feeding amount is 0.011mm/r, and the cutting amount is 0.45mm; performing ball milling on a planet ball mill by using a tungsten carbide ball milling tank and ball milling beads, wherein the ball milling medium is absolute ethyl alcohol, the ball-material ratio is 10, the rotating speed is 500r/min, and the time is 8.2h; placing the ball-milled material in an oven for drying at 80 ℃ for 9h, and sieving the dried material with a 160-mesh screen to obtain the nickel-based as-cast brazing powder;
fig. 6 is a back-scattered electron image of the nickel-based as-cast brazing powder, and it can be seen from fig. 6 that the prepared nickel-based as-cast brazing powder has a uniform particle size, and compared with fig. 5, the bulk skeletal Si-rich eutectic phase ball-milled phase in the as-cast brazing filler metal is significantly reduced.
Test example 1
The nickel-based cast brazing powder prepared in the example 1 is used for brazing nickel-based high-temperature alloy, and the nickel-based high-temperature alloy comprises 2.5% of Cr, 6.5% of Al, 8.0% of Mo, 0.9% of Re, 0.1% of Hf0, 1.0-4.5% of Ta, 0.1% of C and the balance of Ni; the brazing temperature is 1240 ℃, and the heat preservation time is 40min;
FIG. 7 is a microstructure photograph of the obtained weld, and it can be seen from FIG. 7 that the brazing weld is full, the isothermal solidification zone is wide, and the large block of skeleton-like Si-rich eutectic phase in the as-cast brazing filler metal is significantly reduced;
according to GB/T228.2-2015 part 2 of the tensile test for metallic materials: the tensile property of the brazed joint is tested by the high-temperature test method, the tensile strength of the brazed joint at 760 ℃ is 737MPa, and the tensile strength of the brazed joint at 980 ℃ is 387MPa.
Comparative example 1
The nickel-based as-cast brazing filler metal comprises the following components: 0.05% of C, 2.9% of Si, 2.4% of Mo, 4.9% of Al, 1.2% of B, 1.42% of Hf, 4.2% of W, 1.2% of Cr and the balance of Ni; the content of Mo, si and B in the nickel-based as-cast brazing filler metal is obviously reduced compared with that in the embodiment 1;
adopting the mode of gas atomization powder process, right the nickel base as-cast brazing filler metal carries out the powder process, the condition of gas atomization powder process is: the atomizing medium is argon, the atomizing pressure is 1.8MPa, the nozzle structure is a circular seam type, the width of the circular seam is 0.8mm, the atomizing included angle is 39 degrees, the diameter of the leakage pipe is 8mm, and the nickel-based as-cast brazing powder is obtained;
fig. 8 is a microstructure photograph of the nickel-based as-cast brazing powder, and as can be seen from fig. 8, the nickel-based as-cast brazing powder has a distinct enrichment phase therein.
Test example 2
The nickel-based as-cast brazing powder prepared in comparative example 1 is used for brazing the nickel-based superalloy, and the nickel-based superalloy comprises the following components: 2.5 percent of Cr, 6.5 percent of Al, 8.0 percent of Mo, 0.9 percent of Re, 0.1 percent of Hf0, 1.0 to 4.5 percent of Ta, 0.1 percent of C and the balance of Ni; the brazing temperature is 1240 ℃, and the heat preservation time is 40min;
FIG. 9 is a microstructure photograph of the obtained weld, and it can be seen from FIG. 9 that there exists a regular block-shaped enrichment phase in the weld, which has poor toughness and is not favorable for the mechanical properties of the joint;
according to GB/T228.2-2015 part 2 of the tensile test for metallic materials: the tensile strength of the brazed joint at 760 ℃ was 527MPa, which is a drop of 210MPa from the tensile strength of the brazed joint at 760 ℃ in test example 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The preparation method of the nickel-based as-cast brazing powder is characterized by comprising the following steps of:
taking scraps of the nickel-based as-cast brazing filler metal, and performing ball milling to obtain the nickel-based as-cast brazing powder;
the rotation speed of a lathe spindle for taking the chips is 40 to 60r/min, the feed quantity is 0.008 to 0.012mm/r, and the cutting quantity is 0.4 to 0.5mm;
the rotation speed of the ball milling is 400 to 500r/min, the time is 7 to 9h, and the ball-feed ratio is (10 to 12): 1;
the nickel-based as-cast brazing filler metal comprises the following components in percentage by mass: 0.05 to 0.1 percent of C, 2.5 to 4.0 percent of Si, 3.0 to 4.0 percent of Mo, 7.0 to 8.0 percent of Ti, 2.5 to 6.5 percent of Al, 1.0 to 2.5 percent of B, 9.0 to 10.0 percent of Co, 0.05 to 0.20 percent of Fe, 0.1 to 1.5 percent of Hf, 0.02 to 0.2 percent of Re, 0.02 to 0.2 percent of Ta, 3.5 to 4.5 percent of W, 1.0 to 13.5 percent of Cr and the balance of Ni.
2. The method of claim 1, wherein the ball milling is performed by wet ball milling.
3. The preparation method of claim 2, wherein the materials of the ball milling pot and the ball milling beads used for ball milling are tungsten carbide.
4. The method of claim 1, 2 or 3, wherein the ball milling is followed by drying;
the drying temperature is 80 ℃, and the drying time is 8-10 h.
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| CN101412163B (en) * | 2008-11-28 | 2010-12-08 | 西北有色金属研究院 | Ruthenium-vanadium binary alloy high-temperature brazing material |
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| CN101412162A (en) * | 2008-11-28 | 2009-04-22 | 西北有色金属研究院 | Palladium-molybdenum binary alloy high-temperature brazing material |
| CN102303197B (en) * | 2011-08-12 | 2013-03-20 | 西北有色金属研究院 | Boron-containing vanadium-base alloy brazing material |
| CN105479037B (en) * | 2016-01-07 | 2018-04-13 | 厦门大学 | A kind of nickel-based boron-free solder and preparation method thereof |
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| CN109420862B (en) * | 2017-08-28 | 2021-07-27 | 中国科学院金属研究所 | Powder brazing filler metal for nickel-based single crystal superalloy connection and preparation method and application thereof |
| CN108687355A (en) * | 2018-06-28 | 2018-10-23 | 西京学院 | A kind of Mg-based hydrogen storage alloy preparation method based on mechanical ball mill technology |
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| CN108500510A (en) * | 2018-03-29 | 2018-09-07 | 西北有色金属研究院 | A kind of titanium-base alloy cored solder containing chromium |
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