CN113737044B - Easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material and preparation method thereof - Google Patents
Easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0057—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on B4C
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- G21F1/00—Shielding characterised by the composition of the materials
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Abstract
The invention discloses a gadolinium/boron carbide/aluminum neutron absorption material and a preparation method thereof4C, intermediate alloy. And then preparing the Al-Gd intermediate alloy by taking pure Al and pure Gd as raw materials. With Al-B4C and Al-Gd intermediate alloy, Al and alloy elements are used as raw materials, and B is diluted by the intermediate alloy4C particles and Gd are introduced into the matrix and are assisted with ultrasonic stirring treatment, and then the mixture is poured into a mold, so that the gadolinium/boron carbide/aluminum neutron absorbing material with uniform tissue is obtained.
Description
Technical Field
The invention belongs to the field of advanced metal matrix composite material preparation, and particularly relates to a method for preparing a novel easily-deformable gadolinium/boron carbide/aluminum neutron absorbing material by an ultrasonic-assisted liquid phase composite method.
Background
The boron carbide reinforced aluminum matrix composite material has high specific strength, high specific stiffness, low thermal expansion coefficient and good neutron absorption capacity, so that the boron carbide reinforced aluminum matrix composite material is widely applied to the field of nuclear industry. At present, the main methods for preparing the boron carbide reinforced aluminum matrix composite material are powder metallurgy and a liquid phase composite method, wherein the liquid phase composite method has the advantages of low production cost, suitability for large-scale production and the like, so the process has great attention in the field of preparation of ceramic particle/aluminum matrix composite materials. In order to realize high-density storage of spent fuel, B is generally required in industrial application4B in C/Al composite material4The C content is more than 25%, however, too high ceramic content causes drastic deterioration of Al melt fluidity, and it is difficult to cast. In addition, high B4C content results in B4The average spacing between C particles is reduced, dislocation motion is greatly restricted, and ductility of the material is greatly reduced, so plastic working of the material is particularly difficult, which restricts B4Application and development of C/Al composite material. Reduction of B in composite materials4The content of C can ensure the forming capability but can reduce the neutron absorption capability, so how to ensure the plasticity of the material and simultaneously improve the neutron absorption capability is an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide an easily-deformable gadolinium/boron carbide/aluminum neutron absorption material and a preparation method thereof, which are used for overcoming the problems in the prior art and can obtain high strength and toughness (B) by adopting a liquid phase composite method4C + Gd)/Al neutron absorbing material, and a part of B is replaced by adding some alloy elements with larger neutron absorbing cross section in the matrix4And C, the material has the properties of strength, rigidity, plasticity and neutron absorption.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of an easily deformable gadolinium/boron carbide/aluminum neutron absorption material comprises the following steps:
step 1: mixing a fluxing agent with B4Mixing the C powder, adding the mixture into the pure aluminum melt, and performing ultrasonic stirring treatment to prepare Al-B4C, intermediate alloy;
step 2: melting pure Al to obtain pure aluminum melt, adding metal Gd into the pure aluminum melt, and performing ultrasonic stirring treatment to prepare Al-Gd intermediate alloy;
and step 3: pure Al and Al-B prepared in step 14C intermediate alloy and the Al-Gd intermediate alloy prepared in the step 2 are taken as raw materials to ensure that B in the finally obtained neutron absorption material4The mass fraction of C is less than or equal to 15 percent, the mass fraction of Gd is less than or equal to 3 percent, then the raw materials are melted and added with alloy elements, and ultrasonic stirring is assisted in the melting process to process dispersed particles, so that the gadolinium/boron carbide/aluminum neutron absorbing material with uniform tissues is obtained.
Further, the fluxing agent in the step 1 is K2TiF6Or K2ZrF6。
Further, the fluxing agent and B in the step 14The mass ratio of the C powder is 1:2-3: 2.
Further, the temperature of the pure aluminum melt in the step 1 and the step 2 is 700-.
Further, Al-B obtained in step 14C intermediate alloy in which B is4The mass fraction of the C particles is less than or equal to 15 percent.
Further, the mass fraction of Gd in the Al-Gd intermediate alloy obtained in the step 2 is less than or equal to 25 percent.
Further, in the step 3, the alloy elements are Si, Mg and Cu, the addition amount of Si is 0.4-0.8% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, the addition amount of Mg is 0.8-1.2% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, and the addition amount of Cu is 0.15-0.4% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material.
Further, in step 3, the raw materials are melted at 800 ℃ at 700-.
Further, the ultrasonic stirring treatment in step 1, step 2 and step 3 is specifically: immersing an ultrasonic amplitude rod made of Nb-Zr alloy into the melt, and introducing ultrasonic waves in a stirring mode, wherein the ultrasonic treatment time is 5-10min, and the ultrasonic power is 0.5-1.5 kW.
The easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material is prepared by the preparation method of the easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention adopts an ultrasonic-assisted liquid phase compounding method, and a proper amount of Gd element is added into a melt to replace part of B4And C, by cavitation and acoustic flow effects generated in the aluminum melt by high-strength ultrasound, the diffusion speed of solute atoms in the melt can be remarkably accelerated, and the gadolinium/boron carbide/aluminum neutron absorbing material with uniform tissue can be prepared in a short time. On the one hand, a small amount of Gd element is added in place of a part of B4And C, the plasticity and the neutron absorption performance of the material can be improved while a part of strength and rigidity of the material are retained, so that the material is easy to carry out the subsequent plastic processing process. On the other hand, compared with a ball milling and powder mixing process of powder metallurgy for a longer time, Gd element is introduced in a mode of adding an intermediate alloy without considering the wettability problem and can be rapidly dispersed in Al melt. In addition, B4The reduction of the content of C enables the composite material to be easily prepared by a liquid phase composite method, and is beneficial to realizing large-scale and low-cost manufacture of the neutron absorption material.
The main alloy element in the alloy matrix adopted in the invention is AlMg and Si, wherein the elements Mg and Si may form Mg2Si phase, Mg2The Si phase can be dissolved in the aluminum matrix in a solid way, so that the matrix alloy has the age hardening function. The addition of a small amount of Cu element can improve the strength of the matrix alloy without obviously reducing the corrosion resistance of the matrix alloy. The matrix alloy has good plasticity, excellent processing performance and good corrosion resistance.
The ultrasonic amplitude rod used in the invention is made of Nb-Zr alloy material, and has more stability (the solubility of niobium in the aluminum melt is extremely low) in the aluminum melt compared with the traditional Ti alloy, and can effectively avoid introducing other alloy elements into the aluminum melt.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 shows the use of Al-B in example 14C-K2TiF6Al-B prepared by reaction system4C microstructure photograph of the master alloy low magnification (a) and high magnification (b).
FIG. 2 is a photograph of the microstructure of the Al-Gd master alloy prepared in example 1.
Fig. 3 is a photograph of microstructures at a low magnification (a) and a high magnification (b) of the Al-based neutron absorbing material prepared in example 1.
Fig. 4 is a graph showing the compressive properties of the Al-based neutron-absorption material prepared in example 1.
Detailed Description
The present invention is described in detail below:
the invention discloses a preparation method of a novel easily-deformable gadolinium/boron carbide/aluminum neutron absorption material4C, intermediate alloy. And melting pure Al, adding metal Gd into the Al melt, and performing ultrasonic stirring treatment to prepare the Al-Gd intermediate alloy. With Al-B4C and Al-Gd intermediate alloy, Al and alloy elements as raw materials, or Al-B4C and Al-Gd intermediate alloy and Al as raw materialsDiluting B by using master alloy4C particles and Gd are introduced into an aluminum (alloy) matrix, are assisted with ultrasonic stirring, and are poured into a mold, so that the novel easily-deformable gadolinium/boron carbide/aluminum neutron absorbing material with uniform tissues is obtained.
The method specifically comprises the following steps:
step 1: fluxing agent (K)2TiF6Or K2ZrF6) And B4Mixing the powder C according to the mass ratio of 1:2-3:2, adding the mixture into a pure aluminum melt with the temperature of 700-5 ℃ and 850 ℃, performing ultrasonic stirring treatment to remove liquid molten salt impurities on the surface of the melt, and preparing Al-B with uniformly dispersed particles and clean and tidy interface after pouring4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is less than or equal to 15 percent.
Step 2: melting pure Al, adding metal Gd into the Al melt, and performing ultrasonic stirring treatment to prepare an Al-Gd intermediate alloy, wherein the mass fraction of Gd in the Al-Gd intermediate alloy is less than or equal to 25%;
and step 3: al, alloy elements and Al-B prepared in step 1 and step 24C and Al-Gd intermediate alloy are used as raw materials, then the raw materials are melted at the temperature of 700-plus 800 ℃, and alloy elements are added, wherein the alloy elements are Si, Mg and Cu (common alloy elements for casting and deforming aluminum alloy, and other alloy elements are also applicable), ultrasonic stirring is used for processing dispersed particles in the melting process, and the gadolinium/boron carbide/aluminum neutron absorption material with uniform tissues is obtained. By regulating and controlling the proportion of the raw materials, B in the finally prepared neutron absorption material4The mass fraction of C is less than or equal to 10 percent, and the mass fraction of Gd is less than or equal to 3 percent.
The ultrasonic-assisted stirring addition mode adopted in the steps 1-3 is as follows: immersing an ultrasonic amplitude rod made of Nb-Zr alloy into the melt, wherein the ultrasonic treatment time is 5-10min, the ultrasonic power is 0.5-1.5kW, and Al-B with different interface layers can be prepared by controlling the type and the addition amount of the fluxing agent in the step 14C master alloy and can be controlled by B4Addition amount of C particles preparation of different B4Al-B of C content4C, intermediate alloy. In the step 2, Al-Gd with different Gd contents is prepared by controlling the addition amount of GdAnd (3) intermediate alloy. By controlling Al-B in step 34Different B can be prepared by adding the C and Al-Gd intermediate alloy4Gadolinium/boron carbide/aluminum neutron absorbing material with C and Gd content.
The present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is illustrative of the embodiments and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
Step 1: will K2TiF6、B4Mixing C powder according to the mass ratio of 1:1, fully mixing, adding into a pure aluminum melt at the temperature of 800 ℃, simultaneously immersing an Nb-Zr alloy ultrasonic amplitude rod into the melt, introducing ultrasonic waves in a stirring manner, carrying out ultrasonic treatment for 5min with the ultrasonic power of 1.0kW, removing liquid molten salt impurities on the surface of the melt, and obtaining Al-B after pouring4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is 12 percent (Al-12B)4C)。
Step 2: melting pure Al at 750 ℃, adding metal Gd into the Al melt, carrying out ultrasonic stirring treatment for 5min, wherein the ultrasonic power is 1.0kW, and obtaining Al-Gd intermediate alloy after pouring, wherein the mass fraction of Gd in the obtained Al-Gd intermediate alloy is 25% (Al-25 Gd).
And step 3: with pure Al, Al-12B4C and Al-25Gd are used as raw materials, the raw materials are melted at 750 ℃, then three elements of Mg, Si and Cu are added simultaneously, the addition amount of the three alloy elements of Mg, Si and Cu is 0.8 percent, 0.4 percent and 0.15 percent of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, ultrasonic stirring treatment is carried out for 5min, the ultrasonic power is 1.0kW, then the gadolinium/boron carbide/aluminum neutron absorbing material is obtained after solidification, and finally the gadolinium/boron carbide/aluminum neutron absorbing material is obtainedNeutron absorbing material B4The mass fraction of C is 5%, and the mass fraction of Gd is 3%.
FIGS. 1(a) and (B) respectively show the use of Al-B4C-K2TiF6Al-12B prepared by reaction system4Photographs of the microstructure of C master alloy at low and high magnification, from which B can be seen4C particles are uniformly dispersed in the Al matrix, and B4C particle surface is coated with a layer of continuous compact TiB2The layer is wrapped, and no obvious interface reaction product is generated.
FIG. 2 is a photograph of microstructure of Al-25Gd master alloy.
FIGS. 3(a) and (B) are photographs of the low and high magnification microstructures, respectively, of an Al-based neutron-absorbing material prepared by the remelting dilution method, B4The C particles and the bulk Gd-rich phase are homogeneously distributed in the Al matrix.
FIG. 4 is a graph of the compressive behavior of an Al-based neutron absorbing material, which can be seen to have good plastic deformability.
Example 2
Step 1: will K2TiF6、B4Mixing C powder according to the mass ratio of 1:2, fully mixing, adding into a pure aluminum melt with the temperature of 850 ℃, simultaneously immersing an Nb-Zr alloy ultrasonic amplitude rod into the melt, introducing ultrasonic waves in a stirring manner, carrying out ultrasonic treatment for 5min with the ultrasonic power of 1.2kW, removing liquid molten salt impurities on the surface of the melt, and obtaining Al-B after pouring4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is 15 percent (Al-15B)4C)
Step 2: melting pure Al at 750 ℃, adding metal Gd into the Al melt, carrying out ultrasonic stirring treatment for 5min, wherein the ultrasonic power is 1.2kW, and obtaining Al-Gd intermediate alloy after pouring, wherein the mass fraction of Gd in the obtained Al-Gd intermediate alloy is 20% (Al-20 Gd).
And step 3: with pure Al, Al-15B4C and Al-20Gd are used as raw materials, the raw materials are melted at 750 ℃, and then three elements of Mg, Si and Cu are added simultaneously, so that the addition amount of the three alloy elements of Mg, Si and Cu is 1 percent, 0.6 percent and 0.25 percent of the mass of the gadolinium/boron carbide/aluminum neutron absorbing materialUltrasonic stirring for 5min with ultrasonic power of 1.2kW, pouring into a cast iron mold, solidifying to obtain gadolinium/boron carbide/aluminum neutron absorbing material, and obtaining B in the finally obtained neutron absorbing material4The mass fraction of C is 10%, and the mass fraction of Gd is 1%.
Example 3
Step 1: will K2TiF6、B4Mixing C powder according to the mass ratio of 3:2, fully mixing, adding into a pure aluminum melt at the temperature of 700 ℃, simultaneously immersing an Nb-Zr alloy ultrasonic amplitude rod into the melt, introducing ultrasonic waves in a stirring manner, carrying out ultrasonic treatment for 10min with the ultrasonic power of 1.5kW, removing liquid molten salt impurities on the surface of the melt, and obtaining Al-B after pouring4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is 12 percent (Al-12B)4C)。
Step 2: melting pure Al at 750 ℃, adding metal Gd into the Al melt, carrying out ultrasonic stirring treatment for 5min, wherein the ultrasonic power is 1.5kW, and obtaining Al-Gd intermediate alloy after pouring, wherein the mass fraction of Gd in the obtained Al-Gd intermediate alloy is 25% (Al-25 Gd).
And step 3: with pure Al, Al-12B4C and Al-25Gd are used as raw materials, the raw materials are melted at 750 ℃, then three elements of Mg, Si and Cu are added simultaneously, the addition amount of the three alloy elements of Mg, Si and Cu is 1.2 percent, 0.8 percent and 0.4 percent of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, ultrasonic stirring treatment is carried out for 5min, the ultrasonic power is 1.5kW, then the gadolinium/boron carbide/aluminum neutron absorbing material is obtained after solidification, and B in the finally obtained neutron absorbing material is obtained4The mass fraction of C is 10%, and the mass fraction of Gd is 2%.
Example 4
Step 1: will K2TiF6、B4Mixing C powder according to the mass ratio of 1:1, fully mixing, adding into a pure aluminum melt at the temperature of 800 ℃, simultaneously immersing an Nb-Zr alloy ultrasonic amplitude rod into the melt, introducing ultrasonic waves in a stirring manner, carrying out ultrasonic treatment for 10min with the ultrasonic power of 0.5kW, removing liquid molten salt impurities on the surface of the melt, and obtaining Al-B after pouring4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is 12 percent (Al-12B)4C)。
Step 2: melting pure Al at 750 ℃, adding metal Gd into the Al melt, carrying out ultrasonic stirring treatment for 10min, wherein the ultrasonic power is 0.5kW, and obtaining Al-Gd intermediate alloy after pouring, wherein the mass fraction of Gd in the obtained Al-Gd intermediate alloy is 25% (Al-25 Gd).
And step 3: with pure Al, Al-12B4C and Al-25Gd are used as raw materials, the raw materials are melted at 750 ℃, then three elements of Mg, Si and Cu are added simultaneously, the addition amount of the three alloy elements of Mg, Si and Cu is 1.2 percent, 0.6 percent and 0.25 percent of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, ultrasonic stirring treatment is carried out for 10min, the ultrasonic power is 0.5kW, then the gadolinium/boron carbide/aluminum neutron absorbing material is obtained after solidification, and B in the finally obtained neutron absorbing material is obtained4The mass fraction of C is 10%, and the mass fraction of Gd is 3%.
Example 5
Step 1: will K2ZrF6、B4Mixing C powder according to the mass ratio of 1:1, fully mixing, adding into a pure aluminum melt at the temperature of 800 ℃, simultaneously immersing an Nb-Zr alloy ultrasonic amplitude rod into the melt, introducing ultrasonic waves in a stirring manner, carrying out ultrasonic treatment for 5min, wherein the ultrasonic power is 1.0kW, and obtaining liquid molten salt impurities on the surface of the melt after pouring to obtain Al-B powder4C master alloy, Al-B obtained4C intermediate alloy in which B is4The mass fraction of the C particles is 12 percent (Al-12B)4C)。
Step 2: melting pure Al at 750 ℃, adding metal Gd into the Al melt, carrying out ultrasonic stirring treatment for 10min, wherein the ultrasonic power is 1.0kW, and obtaining Al-Gd intermediate alloy after pouring, wherein the mass fraction of Gd in the obtained Al-Gd intermediate alloy is 25% (Al-25 Gd).
And step 3: with pure Al, Al-12B4C and Al-25Gd are used as raw materials, the raw materials are melted at 750 ℃, and then three elements of Mg, Si and Cu are added simultaneously, so that the addition amount of the three alloy elements of Mg, Si and Cu is 1.2 percent, 0.6 percent and 0.25 percent of the mass of the gadolinium/boron carbide/aluminum neutron absorbing materialUltrasonic stirring for 10min with ultrasonic power of 1.0kW, pouring into a cast iron mold, solidifying to obtain gadolinium/boron carbide/aluminum neutron absorbing material, and obtaining B in the finally obtained neutron absorbing material4The mass fraction of C is 10%, and the mass fraction of Gd is 3%.
The embodiments described above are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (8)
1. The preparation method of the easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material is characterized by comprising the following steps of:
step 1: mixing a fluxing agent with B4Mixing the C powder, adding the mixture into the pure aluminum melt, and performing ultrasonic stirring treatment to prepare Al-B4C, intermediate alloy;
step 2: melting pure Al to obtain pure aluminum melt, adding metal Gd into the pure aluminum melt, and performing ultrasonic stirring treatment to prepare Al-Gd intermediate alloy;
and step 3: pure Al and Al-B prepared in step 14C intermediate alloy and the Al-Gd intermediate alloy prepared in the step 2 are taken as raw materials to ensure that B in the finally obtained neutron absorption material4The mass fraction of C is less than or equal to 15%, the mass fraction of Gd is less than or equal to 3%, then the raw materials are melted and added with alloy elements, wherein the alloy elements are Si, Mg and Cu, the addition amount of Si is 0.4-0.8% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, the addition amount of Mg is 0.8-1.2% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, the addition amount of Cu is 0.15-0.4% of the mass of the gadolinium/boron carbide/aluminum neutron absorbing material, and ultrasonic stirring is used for processing dispersed particles in the melting process to obtain the gadolinium/boron carbide/aluminum neutron absorbing material with uniform tissue;
the ultrasonic stirring treatment in the step 1, the step 2 and the step 3 is specifically as follows: immersing an ultrasonic amplitude rod made of Nb-Zr alloy into the melt, and introducing ultrasonic waves in a stirring mode, wherein the ultrasonic treatment time is 5-10min, and the ultrasonic power is 0.5-1.5 kW.
2. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material according to claim 1, wherein the fluxing agent in the step 1 is K2TiF6Or K2ZrF6。
3. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material according to claim 1, wherein the fluxing agent and B in the step 14The mass ratio of the C powder is 1:2-3: 2.
4. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material as claimed in claim 1, wherein the pure aluminum melt temperature in step 1 and step 2 is 700-.
5. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material according to claim 1, wherein Al-B obtained in step 14C intermediate alloy in which B is4The mass fraction of the C particles is less than or equal to 15 percent.
6. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorption material according to claim 1, wherein the mass fraction of Gd in the Al-Gd intermediate alloy obtained in the step 2 is less than or equal to 25%.
7. The method for preparing easy-to-deform gadolinium/boron carbide/aluminum neutron absorbing material as claimed in claim 1, wherein the raw material is melted at 800 ℃ and 700 ℃ in step 3.
8. An easily deformable gadolinium/boron carbide/aluminum neutron absorption material, which is characterized by being prepared by the preparation method of the easily deformable gadolinium/boron carbide/aluminum neutron absorption material according to any one of claims 1 to 7.
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| CN110229979B (en) * | 2019-07-05 | 2020-10-27 | 西安交通大学 | Intragranular grain boundary distribution micro-nano complex phase particle reinforced aluminum matrix composite material and preparation method thereof |
| CN111118329B (en) * | 2020-01-19 | 2021-11-23 | 江苏大学 | Preparation method and device of high-toughness high-neutron absorption aluminum-based composite material |
| CN111394622B (en) * | 2020-04-01 | 2021-04-13 | 上海交通大学 | Aluminum-based titanium diboride composite material for neutron shielding and preparation method thereof |
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