CN114075635A - High-quality heat value aluminum-silicon alloy powder material and preparation method thereof - Google Patents
High-quality heat value aluminum-silicon alloy powder material and preparation method thereof Download PDFInfo
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- CN114075635A CN114075635A CN202110794396.1A CN202110794396A CN114075635A CN 114075635 A CN114075635 A CN 114075635A CN 202110794396 A CN202110794396 A CN 202110794396A CN 114075635 A CN114075635 A CN 114075635A
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- C22C21/00—Alloys based on aluminium
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- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
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Abstract
The invention discloses a high-quality aluminum-silicon alloy powder material with a heat value and a preparation method thereof, wherein the powder material comprises an aluminum element, a silicon element and a functional additive element, wherein the content of silicon is 5-15 wt%, the content of aluminum is 85-95 wt%, and the content of the functional additive element is 0-5 wt%. The alloying preparation of the aluminum and other metals or nonmetals effectively expands the application of the aluminum in the field of energetic materials, and enables the aluminum to have special properties in the aspects of energy release and ignition characteristics. Specifically, the non-metallic silicon has a melting point of 1414 ℃, a boiling point of 2355 ℃ and a density of 2.49g/cm3. The high-quality heat value characteristic of silicon not only improves the overall quality heat value of the aluminum alloy, but also can reach the required high heat value with lower silicon content.
Description
Technical Field
The invention belongs to the field of alloy powder, particularly relates to aluminum-silicon alloy powder, and particularly relates to an aluminum-silicon alloy powder material with high quality and a heat value.
Background
High-energy propellants, pyrotechnic materials and the like require aluminum alloy spherical powder with high heat value density, high heat enthalpy density and high activity, and metal elements forming alloy with aluminum are required to have high density and high heat value.
Aluminum has a high energy density and a fast oxidation rate, and is widely used as a combustible agent in an energetic material system. During the reaction process of the energetic material system, the aluminum particles and water, carbon dioxide, oxygen and the like in the combustion products of the energetic material are subjected to gas phase reaction. Since the vaporization of aluminum particles is surface vaporization, the combustion rate of aluminum powder is mainly dependent on the size of aluminum particles. To increase the burn rate, the size of the aluminum particles must be reduced. The nano-sized aluminum particles have low activity, are easy to spontaneously agglomerate into large particles, have poor manufacturability in compounding with the energetic material, and are difficult to realize the effect of improving the energy release rate of the energetic material.
Silicon is a high-quality heat value material and is widely applied to the fields of mixed explosives, solid propellants, pyrotechnic compositions and the like. The alloying preparation of the aluminum and other metals or nonmetals effectively expands the application of the aluminum in the field of energetic materials, and enables the aluminum to have special properties in the aspects of energy release and ignition characteristics.
However, aluminum has a melting point of 660 ℃ and silicon has a melting point of 1414 ℃ and, if the two are alloyed, the mixing of high melting point metals is technically difficult. Meanwhile, how to prepare a high-quality aluminum alloy powder material with a heat value is one of the technical problems faced at present.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a high-quality aluminum-silicon alloy powder material with a high heat value and a preparation method thereof, wherein the melting point of aluminum is 660 ℃, the boiling point is 2327 ℃, and the density is 2.7g/cm3While the heat of combustion of aluminum was 822.9 kJ/mol. The melting point of nonmetal silicon is 1414 ℃, the boiling point is 2355 ℃, and the density is 2.49g/cm3. The high-quality heat value characteristic of silicon not only improves the whole quality heat value of the aluminum alloy, but also can reach the required high heat value by lower silicon content, and simultaneously, the magnetic suspension vacuum melting technology is utilized to prepare the aluminum-silicon alloy with high melting point difference, thereby improving the combustion heat value of the aluminum powder. .
The invention aims to provide a high-quality aluminum-silicon alloy powder material with a high heat value, which comprises an aluminum element, a silicon element and a functional additive element, wherein the content of silicon is between 5 and 15 weight percent, the content of aluminum is between 85 and 95 weight percent, and the content of the functional additive element is between 0 and 5 weight percent.
The high-quality heat value characteristic of the silicon not only improves the overall quality heat value of the aluminum alloy, but also can reach the required high heat value with lower silicon content. Thus, silicon is suitable for alloying with aluminum, increasing the overall heating value of the alloy system. The heat value of the silicon can reach more than 31.11kJ/g by adding more than 10.5wt percent. The heat value of about 10.5 percent of silicon is more than 30kJ/g, and the density is 2.7g/cm3And 3.0g/cm3And higher than aluminum.
In a preferred embodiment, in the powder material, the content of silicon is between 6 wt% and 12 wt%, the content of aluminum is between 88 wt% and 94 wt%, and the content of the functional additive element is between 0 wt% and 3 wt%.
In a preferred embodiment, the functional additive element is selected from at least one of magnesium, zinc, iron or copper, rare earth elements.
The zinc element can improve the density value of the multi-element alloy; the magnesium element has high oxidation activity, so that the combustion activity of the alloy powder can be increased; elemental iron/copper may be produced in the combustion products of the alloy powder as iron oxides/copper oxides that may catalyze the combustion of aluminum containing explosives aluminum containing propellants.
In a further preferred embodiment, the rare earth element is selected from at least one of samarium, lanthanum, cerium and scandium.
Wherein, the rare earth elements can promote the elements to be combined more tightly and play a role in viscosity.
In a preferred embodiment, in the aluminum-silicon alloy powder, the content of magnesium is 0-1.5 wt%, the content of zinc is 0-2.5 wt%, the content of iron or copper is 0-0.3 wt%, and the content of rare earth elements is 0-0.2 wt%.
In a further preferred embodiment, in the aluminum-silicon alloy powder, the content of magnesium is 0 to 1.2 wt%, the content of zinc is 0 to 2 wt%, the content of iron or copper is 0 to 0.2 wt%, and the content of rare earth elements is 0 to 0.15 wt%.
Wherein, in order to improve the activity of the aluminum-silicon double element, not more than 1.5 percent of magnesium is added for catalytic activation. Adding not more than 0.3% of iron element or copper element, and catalyzing the combustion of aluminum-containing explosive and aluminum-containing propellant by using iron oxide in combustion products of the alloy powder. The rare earth elements with the content of not more than 0.2 percent are added, so that the grain refinement of the multi-component alloy is promoted, and the component uniformity is improved.
In a preferred embodiment, the powder material has a theoretical density of 2.4g/cm3～2.7g/cm3And the heat value is more than or equal to 30 kJ/g.
The second purpose of the invention is to provide a preparation method of the high-quality aluminum-silicon alloy powder material with the heat value, which comprises the following steps:
step 1, in the presence of inert gas, smelting raw materials in magnetic suspension vacuum smelting to obtain a smelting solution;
and 2, sequentially carrying out centrifugal atomization and post-treatment on the smelting liquid under the back blowing of inert gas to obtain the high-quality heat value aluminum-silicon alloy powder material.
In a preferred embodiment, step 1' is performed before step 1:
step 1': and (4) removing impurities on the surface of the raw material.
Wherein the impurity removal is carried out as follows: firstly, raw materials are polished by sand paper. Secondly, placing the raw materials in a sodium hydroxide solution: the temperature is 50-60 ℃, the concentration of sodium hydroxide is 5%, and the time is 0.5-1 minute; meanwhile, ultrasonic oscillation is adopted, the power of the ultrasonic oscillation is 10-60 KW, and the frequency is 160 KHZ. Thirdly, washing the raw materials with water and drying in an inert atmosphere.
In a preferred embodiment, in step 1, the raw materials include metallic aluminum and non-metallic silicon.
In a further preferred embodiment, in step 1, the raw material further comprises at least one of metallic zinc, metallic magnesium, metallic iron or metallic copper, rare earth metals.
In a still further preferred embodiment, the rare earth metal is selected from at least one of samarium, lanthanum, cerium and scandium metals.
In a preferred embodiment, the amounts of the components in the feed are as follows: 5-15 parts of non-metallic silicon, 85-95 parts of metallic aluminum, 0-2.5 parts of metallic zinc, 0-1.5 parts of metallic magnesium, 0-0.3 part of metallic iron or metallic copper and 0-0.2 part of rare earth metal.
In a further preferred embodiment, the non-metallic silicon is 6 to 12 parts, the metallic aluminum is 88 to 94 parts, the metallic zinc is 0 to 2 parts, the metallic magnesium is 0 to 1.2 parts, the metallic iron or copper is 0 to 0.2 part, and the rare earth metal is 0 to 0.15 part.
In a preferred embodiment, in step 1, the inert gas is selected from argon.
In a further preferred embodiment, in the step 1, the temperature of the smelting is 1400-2000 ℃, preferably 1500-1800 ℃, and the liquid phase viscosity is controlled.
In the prior art, two or more metals with larger melting point difference are considered by those skilled in the art to be incapable of melting together, especially components which can mutually react, such as aluminum and silicon, and therefore, the aluminum and the silicon are respectively melted and mixed for atomization in the prior art. However, the inventor finds out through a large number of experiments that the aluminum and the silicon with high melting point difference can be melted together without interaction reaction by adopting the magnetic suspension vacuum melting technology, and overcomes the technical bias.
In the invention, the inventor finds out through a large number of experiments that the coexistence time of the liquid aluminum and the liquid silicon is reduced by the magnetic suspension vacuum melting technology, so that the quantity of the liquid aluminum and the liquid silicon participating in the interaction reaction is reduced, and the co-melting of two or more substances with larger melting point difference can be realized.
In a preferred embodiment, in step 2, during centrifugal atomization, inert gas is blown into the centrifugal atomization system in the direction opposite to the centrifugal direction.
Wherein the centrifugal direction is a shearing direction during centrifugation, and the reverse blowing is: when the centrifugal shear is carried out clockwise, inert gas is blown into the tank wall along the anticlockwise direction; when the centrifugal shear is performed in the anticlockwise direction, inert gas is blown in from the tank wall in the clockwise direction. Through a large number of experimental researches, the inventor finds that the effect of back blowing in the centrifugal direction by adopting inert gas is obviously better than that of back blowing in the same direction with the centrifugal direction.
In a further preferred embodiment, the temperature of the inert gas in step 2 is 0 to 50 ℃, preferably 0 to 30 ℃, and more preferably, the inert gas is selected from argon.
In a preferred embodiment, in step 2, the centrifugal linear velocity is controlled to be 20m/s to 100m/s (e.g., 25m/s, 35m/s, 45m/s, 55m/s, 65m/s, 75m/s, 85m/s, or 95m/s) to ensure droplet densification, and the droplet size distribution is controlled by controlling the rotation speed and the liquid temperature.
The preparation method of the metal aluminum-silicon alloy powder adopts magnetic suspension vacuum melting-argon suspension stirring, adopts anaerobic closed-loop and inert gas environment high-speed butterfly centrifugal atomization method for production, and carries out crystallization control through non-equilibrium condensation. The invention is carried out under the protection of high-purity inert gas in the whole process of metal heating melting, spraying and condensation molding, thereby avoiding oxidation under high temperature condition and improving the content of active metal in the aluminum-silicon alloy powder.
In the invention, (1) the rapid nonequilibrium condensation crystallization is realized by controlling the temperature of argon, and the alloy of aluminum and silicon is controlled to have amorphous alloy metal property. If ultra-low temperature nitrogen (such as liquid nitrogen cooling nitrogen gas and-80 ℃) is adopted, the performance of the powder is influenced due to too large temperature difference, and the inventor finds that the temperature difference between the high temperature and 0-50 ℃ is high enough to realize cooling when the powder is smelted, and meanwhile, the performance of the powder is not influenced. (2) In the centrifugal atomization process, inert gas is used for carrying out back flushing on the high-speed fog drops to form vortex, and alloy powder is guaranteed to be in heterogeneous alloy. Meanwhile, the atomized liquid drops can be protected from being polluted by inert gas back blowing.
In a preferred embodiment, the centrifugal atomization is carried out in an atomization tank, in which an atomization disc is arranged.
In a further preferred embodiment, an atomizing disc, a blanking pipe, a powder storage bin and a powder collection tank are sequentially arranged in the atomizing tank from top to bottom.
Wherein, there is a little part powder directly to fall into the receipts powder jar of atomizing jar in centrifugal atomization process, but this part is the particle size generally great or particle size distributes unevenly, because the powder of little particle size can directly get into the cooler, gets into the sack at last and receives the powder ware and collect. However, the powder collected by the atomization tank can be used as the next raw material to enter the magnetic suspension smelting furnace again.
In a preferred embodiment, a plurality of inert gas blowing ports are provided in a tank wall of the atomizer.
In a further preferred embodiment, a plurality of inert gas blowing openings are provided (uniformly) in the circumferential direction on the tank wall of the atomizing tank (preferably on the tank wall at the same level as the atomizing disk).
In a preferred embodiment, in step 2, the post-treatment comprises cooling, buffering and collecting.
In a further preferred embodiment, the post-treatment is carried out in a cooler, a buffer tank and a bag collector.
In a further preferable embodiment, after collecting the multicomponent high-density heat value aluminum-silicon alloy powder, sieving and grading are optionally carried out to obtain a product with a required particle size.
In step 1 and step 2, the inert gas is selected from argon.
Compared with the prior art, the invention has the following beneficial effects:
(1) by utilizing the high-quality heat value characteristic of silicon, the overall quality heat value of the aluminum alloy is improved, and meanwhile, the required high heat value can be achieved by lower silicon content;
(2) firstly, magnetic suspension vacuum melting is adopted to realize direct mixed melting of two or more metals with high melting point difference; and then, obtaining spherical powder with macroscopically uniform elements and independent characteristics through centrifugal atomization.
Drawings
FIG. 1 shows a schematic diagram of an in-situ butterfly centrifugal atomization in the atomizer;
a-centrifugal direction and B-inert gas back-blowing direction, and the inert gas is back-blown clockwise when centrifugal atomization is carried out anticlockwise in the drawing.
Detailed Description
While the present invention will be described in detail with reference to the following examples, it should be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the present invention.
The raw materials used in the examples and comparative examples are disclosed in the prior art if not particularly limited, and may be, for example, directly purchased or prepared according to the preparation methods disclosed in the prior art.
[ example 1 ]
The aluminum-silicon alloy powder is prepared by the following steps:
(1) placing an aluminum ingot and a silicon ingot with the weight of 85:15 into a vacuum smelting furnace, and removing gas containing oxidizing atmosphere adsorbed on the surface by adopting high-temperature inert gas purging;
(2) melting an aluminum ingot and a silicon ingot into liquid by using a magnetic suspension vacuum smelting method, using argon gas for suspension stirring, and controlling the smelting temperature to be 1800 ℃;
(3) the production method comprises the steps of closed-loop anaerobic high-speed butterfly centrifugal atomization production in an inert gas environment, controlling the centrifugal linear speed to be 60m/s, blowing normal-temperature argon in the reverse direction of the centrifugal direction, and carrying out nonequilibrium condensation crystallization control to form low-oxidation solid spherical aluminum-silicon alloy powder;
(4) most of the powder enters a cooler, a buffer tank and a cloth bag powder collector in sequence after centrifugal atomization.
(5) And grading the alloy powder by using a vibrating screen, and then sealing and packaging.
Wherein, the sieved aluminum-silicon alloy powder is sieved by a 325-mesh sieve, the particle size of the sieved aluminum-silicon alloy powder is several microns to several hundred microns, the roundness value is 0.95, and the density is 2.66g/cm3The calorific value is more than or equal to 30 kJ/g. The alloy powder comprises 83.6 percent of Al and 16.4 percent of Si.
[ example 2 ]
The aluminum-silicon alloy powder is prepared by the following steps:
(1) placing an aluminum ingot and a silicon ingot with the weight of 92:8 into a vacuum smelting furnace, and removing gas containing oxidizing atmosphere adsorbed on the surface by adopting high-temperature inert gas purging;
(2) melting an aluminum ingot and a silicon ingot into liquid by using a magnetic suspension vacuum smelting method, using argon gas for suspension stirring, and controlling the smelting temperature to be 1800 ℃;
(3) the production method comprises the steps of closed-loop anaerobic high-speed butterfly centrifugal atomization production in an inert gas environment, controlling the centrifugal linear speed to be 60m/s, blowing normal-temperature argon in the reverse direction of the centrifugal direction, and carrying out nonequilibrium condensation crystallization control to form low-oxidation solid spherical aluminum-silicon alloy powder;
(4) most of the powder enters a cooler, a buffer tank and a cloth bag powder collector in sequence after centrifugal atomization.
(5) And grading the alloy powder by using a vibrating screen, and then sealing and packaging.
Wherein, the sieved powder is sieved by a 325-mesh sieve, and the high-quality aluminum-silicon alloy powder material with the heat value is obtained. The theoretical density of the powder material is 2.4g/cm3～2.7g/cm3And the heat value is more than or equal to 30 kJ/g.
[ example 3 ]
The aluminum-silicon alloy powder is prepared by the following steps:
(1) placing an aluminum ingot, a silicon ingot, a zinc ingot, a magnesium ingot, a copper ingot and a scandium ingot with the weight of 87:13:1:0.5:0.2:0.05 into a vacuum smelting furnace, and purging by adopting high-temperature inert gas to remove gas containing oxidizing atmosphere adsorbed on the surface;
(2) melting aluminum ingots, silicon ingots, zinc ingots, magnesium ingots, copper ingots and scandium ingots into liquid by a magnetic suspension vacuum smelting method, using argon gas for suspension stirring, and controlling the smelting temperature to be 1800 ℃;
(3) the production method comprises the steps of closed-loop anaerobic high-speed butterfly centrifugal atomization production in an inert gas environment, controlling the centrifugal linear speed to be 60m/s, blowing normal-temperature argon in the reverse direction of the centrifugal direction, and carrying out nonequilibrium condensation crystallization control to form low-oxidation solid spherical aluminum-silicon alloy powder;
(4) most of the powder enters a cooler, a buffer tank and a cloth bag powder collector in sequence after centrifugal atomization.
(5) And grading the alloy powder by using a vibrating screen, and then sealing and packaging.
Wherein, the sieved powder is sieved by a 325-mesh sieve, and the high-quality aluminum-silicon alloy powder material with the heat value is obtained. The theoretical density of the powder material is 2.4g/cm3～2.7g/cm3And the heat value is more than or equal to 30 kJ/g.
[ example 4 ]
The aluminum-silicon alloy powder is prepared by the following steps:
(1) placing an aluminum ingot, a silicon ingot, a zinc ingot, a magnesium ingot, an iron ingot and a cerium ingot with the weight of 92:8:2:0.8:0.1:0.1 into a vacuum smelting furnace, and purging by adopting high-temperature inert gas to remove gas containing oxidizing atmosphere adsorbed on the surface;
(2) melting aluminum ingots, silicon ingots, zinc ingots, magnesium ingots, iron ingots and cerium ingots into liquid by a magnetic suspension vacuum smelting method, using argon gas for suspension stirring, and controlling the smelting temperature to be 1800 ℃;
(3) the production method comprises the steps of closed-loop anaerobic high-speed butterfly centrifugal atomization production in an inert gas environment, controlling the centrifugal linear speed to be 60m/s, blowing normal-temperature argon in the reverse direction of the centrifugal direction, and carrying out nonequilibrium condensation crystallization control to form low-oxidation solid spherical aluminum-silicon alloy powder;
(4) most of the powder enters a cooler, a buffer tank and a cloth bag powder collector in sequence after centrifugal atomization.
(5) And grading the alloy powder by using a vibrating screen, and then sealing and packaging.
Wherein, the sieved powder is sieved by a 325-mesh sieve, and the high-quality aluminum-silicon alloy powder material with the heat value is obtained. The theoretical density of the powder material is 2.4g/cm3～2.7g/cm3And the heat value is more than or equal to 30 kJ/g.
Claims (10)
1. The high-quality aluminum-silicon alloy powder material with the heat value comprises an aluminum element, a silicon element and a functional additive element, wherein the content of silicon is 5-15 wt%, the content of aluminum is 85-95 wt%, and the content of the functional additive element is 0-5 wt%.
2. The high-quality aluminum-silicon alloy powder material with high calorific value according to claim 1, wherein the powder material contains 6 to 12 wt% of silicon, 88 to 94 wt% of aluminum and 0 to 3 wt% of functional additive elements.
3. The high quality aluminum-silicon alloy powder material with high heating value according to claim 1, wherein the functional additive element is at least one selected from magnesium, zinc, iron or copper, and rare earth elements, preferably at least one selected from samarium, lanthanum, cerium and scandium;
preferably, in the powder material, the content of magnesium is 0-1.5 wt%, the content of zinc is 0-2.5 wt%, the content of iron or copper is 0-0.3 wt%, and the content of rare earth elements is 0-0.2 wt%.
4. The high-quality aluminum-silicon alloy powder material with high calorific value according to claim 2, wherein the powder material contains 0 to 1.2 wt% of magnesium, 0 to 2 wt% of zinc, 0 to 0.2 wt% of iron or copper, and 0 to 0.15 wt% of rare earth elements.
5. The high-quality heat value aluminum-silicon alloy powder material as claimed in any one of claims 1 to 4, wherein the theoretical density of the powder material is 2.4g/cm3～2.7g/cm3And the heat value is more than or equal to 30 kJ/g.
6. A preparation method of the high-quality heat value aluminum-silicon alloy powder material as claimed in any one of claims 1 to 5, comprising the following steps:
step 1, in the presence of inert gas, smelting raw materials in magnetic suspension vacuum smelting to obtain a smelting solution;
and 2, sequentially carrying out centrifugal atomization and post-treatment on the smelting liquid under the back blowing of inert gas to obtain the high-quality heat value aluminum-silicon alloy powder material.
7. The production method according to claim 6,
step 1' is performed before step 1: surface impurity removal is carried out on the raw materials; and/or
In step 1, the raw material comprises metallic aluminum and non-metallic silicon, preferably further comprises at least one of metallic zinc, metallic magnesium, metallic iron or metallic copper, and rare earth metal, more preferably, the rare earth metal is selected from at least one of metallic samarium, metallic lanthanum, metallic cerium and metallic scandium.
8. The preparation method according to claim 7, wherein the weight amounts of the components in the raw materials are as follows: 5-15 parts of non-metallic silicon, 85-95 parts of metallic aluminum, 0-2.5 parts of metallic zinc, 0-1.5 parts of metallic magnesium, 0-0.3 part of metallic iron or metallic copper and 0-0.2 part of rare earth metal; preferably, the non-metallic silicon is 6-12 parts, the metallic aluminum is 88-94 parts, the metallic zinc is 0-2 parts, the metallic magnesium is 0-1.2 parts, the metallic iron or metallic copper is 0-0.2 parts, and the rare earth metal is 0-0.15 parts.
9. The production method according to claim 6,
in the step 1, the smelting temperature is 1400-2000 ℃, and preferably 1500-1800 ℃; and/or
In the step 2, during centrifugal atomization, inert gas is blown into a centrifugal atomization system along the direction opposite to the centrifugal direction, and the temperature of the inert gas is preferably 0-50 ℃; and/or
In step 2, the centrifugal linear velocity is controlled to be 20m/s to 100 m/s.
10. The method according to any one of claims 6 to 9, wherein the post-treatment comprises cooling, buffering and collecting, preferably the post-treatment is performed in a cooler, a buffer tank and a bag collector.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045110A (en) * | 1989-05-19 | 1991-09-03 | Shell Research Limited | Aluminium-strontium master alloy |
| US20100143185A1 (en) * | 2008-12-09 | 2010-06-10 | United Technologies Corporation | Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids |
| CN105986136A (en) * | 2016-02-01 | 2016-10-05 | 安徽乾通教育制造有限公司 | High-performance aluminum alloy added with rare earth element and preparation method of high-performance aluminum alloy |
| CN108411132A (en) * | 2018-05-04 | 2018-08-17 | 广西大学 | A kind of preparation method of magnetic levitation vacuum melting FeMnNiCoCr high-entropy alloys |
| CN111482613A (en) * | 2019-01-25 | 2020-08-04 | 北京理工大学 | High-physical-activity aluminum-silicon spherical alloy powder and preparation method and application thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045110A (en) * | 1989-05-19 | 1991-09-03 | Shell Research Limited | Aluminium-strontium master alloy |
| US20100143185A1 (en) * | 2008-12-09 | 2010-06-10 | United Technologies Corporation | Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids |
| CN105986136A (en) * | 2016-02-01 | 2016-10-05 | 安徽乾通教育制造有限公司 | High-performance aluminum alloy added with rare earth element and preparation method of high-performance aluminum alloy |
| CN108411132A (en) * | 2018-05-04 | 2018-08-17 | 广西大学 | A kind of preparation method of magnetic levitation vacuum melting FeMnNiCoCr high-entropy alloys |
| CN111482613A (en) * | 2019-01-25 | 2020-08-04 | 北京理工大学 | High-physical-activity aluminum-silicon spherical alloy powder and preparation method and application thereof |
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