Tungsten alloy material used in high-temperature environment
By preparing tungsten alloy materials and combining them with graphene, nano-alumina, and modified lanthanum liquid, the mechanical properties and wear resistance of tungsten alloy materials under high-temperature environments were solved, and the high-temperature stability and wear resistance of the materials were significantly improved.
Patent Information
- Application Number
- CN202511501246.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-01-09
AI Technical Summary
Existing tungsten alloy materials have poor mechanical properties and wear resistance at high temperatures, and their high-temperature stability is insufficient, which limits their application efficiency.
A tungsten alloy material for high-temperature environments was prepared by combining tungsten, chromium, and yttrium powder with a modified liquid and through specific stirring, filtration, drying, molding, and sintering processes, combined with the blending of graphene, nano-alumina, and modified lanthanum liquid.
It significantly improves the wear resistance and mechanical properties of tungsten alloy materials under high-temperature environments, and enhances the temperature stability of the products.
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Abstract
Description
Technical Field
[0001] This invention relates to the field of tungsten alloy materials technology, and specifically to a tungsten alloy material for use in high-temperature environments. Background Technology
[0002] Tungsten metal, due to its high melting point, high strength, low coefficient of thermal expansion, high thermal conductivity, sputter resistance, and low deuterium-tritium retention, is considered one of the most promising candidate wall materials for fusion reactor plasma-facing walls. However, existing tungsten alloy materials suffer from poor mechanical properties, poor wear resistance, difficulty in balancing mechanical properties and wear resistance, and poor high-temperature stability, further limiting their application efficiency. Summary of the Invention
[0003] In view of the deficiencies of the prior art, the purpose of this invention is to provide a tungsten alloy material for use in high-temperature environments, so as to solve the problems mentioned in the background art.
[0004] The present invention solves the technical problem by adopting the following technical solution: This invention provides a tungsten alloy material for use in high-temperature environments, comprising the following raw materials in parts by weight: 70-80 parts tungsten, 4-6 parts chromium, 2-5 parts yttrium powder, 35-55 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder are added to the modified liquid and stirred. The mixture is then filtered, dried, and the dried product is molded in a mold. The product is then warm-pressed at 130-160℃ for 30-90 seconds. After molding, the product is sintered to obtain a tungsten alloy material.
[0005] Preferably, the stirring speed of the stirring treatment is 450-500 r / min, and the stirring time is 1 h; the sintering temperature of the sintering treatment is 1500℃, and the sintering time is 1 h.
[0006] Preferably, the deteriorated liquid is prepared as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: Add 2-3 parts graphene agent and 1-3 parts silicon carbide to 5-8 parts modified lanthanum solution, stir evenly, then filter and dry to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; mix the nano-alumina liquid and the compounding agent at a weight ratio of 5:3 and ball mill. After ball milling, a modified liquid is obtained. The ball milling speed is 50 r / min and the ball milling time is 1 h.
[0007] Preferably, the acid solution has a mass fraction of 2-5%; the potassium permanganate solution has a mass fraction of 4-8%.
[0008] Preferably, the mass fraction of the dopamine hydrochloride solution is 4-7%.
[0009] Preferably, the modified lanthanum solution is prepared by: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
[0010] Preferably, the sodium silicate solution has a mass fraction of 2-5%.
[0011] Preferably, the lanthanum nitrate solution has a mass fraction of 3-5%.
[0012] Compared with the prior art, the present invention has the following beneficial effects: The tungsten alloy material of this invention uses tungsten, chromium and other raw materials, and is further improved by a modifier. The modifier uses graphene as a matrix and is improved by a specific compounding agent in combination with nano alumina liquid. At the same time, the modified lanthanum liquid uses nano titanium dioxide as a matrix. After further blending and synergistic effects, the resulting alloy product has excellent wear resistance at high temperatures, and the mechanical properties and wear resistance are improved in a coordinated manner, resulting in further improvement in the performance of the product. Detailed Implementation
[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0014] This embodiment provides a tungsten alloy material for use in high-temperature environments, comprising the following parts by weight of raw materials: 70-80 parts tungsten, 4-6 parts chromium, 2-5 parts yttrium powder, 35-55 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder are added to the modified liquid and stirred. The mixture is then filtered, dried, and the dried product is molded in a mold. The product is then warm-pressed at 130-160℃ for 30-90 seconds. After molding, the product is sintered to obtain a tungsten alloy material.
[0015] In this embodiment, the stirring speed for the stirring treatment is 450-500 r / min, and the stirring time is 1 h; the sintering temperature for the sintering treatment is 1500℃, and the sintering time is 1 h.
[0016] The preparation of the deteriorated liquid in this embodiment is as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: Add 2-3 parts graphene agent and 1-3 parts silicon carbide to 5-8 parts modified lanthanum solution, stir evenly, then filter and dry to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; mix the nano-alumina liquid and the compounding agent at a weight ratio of 5:3 and ball mill. After ball milling, a modified liquid is obtained. The ball milling speed is 50 r / min and the ball milling time is 1 h.
[0017] In this embodiment, the acid solution has a mass fraction of 2-5%; the potassium permanganate solution has a mass fraction of 4-8%.
[0018] The mass fraction of the dopamine hydrochloride solution in this embodiment is 4-7%.
[0019] The preparation method of the modified lanthanum solution in this embodiment is as follows: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
[0020] The sodium silicate solution in this embodiment has a mass fraction of 2-5%.
[0021] The mass fraction of the lanthanum nitrate solution in this embodiment is 3-5%.
[0022] Example 1. This embodiment provides a tungsten alloy material for use in high-temperature environments, comprising the following parts by weight of raw materials: 70 parts tungsten, 4 parts chromium, 2 parts yttrium powder, 35 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder were added to the modified liquid and stirred. The mixture was then filtered, dried, and the dried product was molded in a mold. The product was then hot-pressed at 130°C for 30 seconds. After molding, the product was sintered to obtain a tungsten alloy material.
[0023] In this embodiment, the stirring speed for the stirring treatment is 450 r / min, and the stirring time is 1 h; the sintering temperature for the sintering treatment is 1500℃, and the sintering time is 1 h.
[0024] The preparation of the deteriorated liquid in this embodiment is as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: Add 2 parts graphene agent and 1 part silicon carbide to 5 parts modified lanthanum solution, stir evenly, then filter and dry to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; mix the nano-alumina liquid and the compounding agent at a weight ratio of 5:3 and ball mill. After ball milling, a modified liquid is obtained. The ball milling speed is 50 r / min and the ball milling time is 1 h.
[0025] In this embodiment, the acid solution has a mass fraction of 2%; the potassium permanganate solution has a mass fraction of 4%.
[0026] The mass fraction of the dopamine hydrochloride solution in this embodiment is 4%.
[0027] The preparation method of the modified lanthanum solution in this embodiment is as follows: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
[0028] The sodium silicate solution in this embodiment has a mass fraction of 2%.
[0029] The mass fraction of the lanthanum nitrate solution in this embodiment is 3%.
[0030] Example 2. This embodiment provides a tungsten alloy material for use in high-temperature environments, comprising the following parts by weight of raw materials: 80 parts tungsten, 6 parts chromium, 5 parts yttrium powder, and 55 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder were added to the modified liquid and stirred. The mixture was then filtered, dried, and the dried product was molded in a mold. The product was then hot-pressed at 160°C for 90 seconds. After molding, the product was sintered to obtain a tungsten alloy material.
[0031] In this embodiment, the stirring speed for the stirring treatment is 500 r / min, and the stirring time is 1 h; the sintering temperature for the sintering treatment is 1500℃, and the sintering time is 1 h.
[0032] The preparation of the deteriorated liquid in this embodiment is as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: Add 3 parts graphene agent and 3 parts silicon carbide to 8 parts modified lanthanum solution, stir evenly, then filter and dry to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; mix the nano-alumina liquid and the compounding agent at a weight ratio of 5:3 and ball mill. After ball milling, a modified liquid is obtained. The ball milling speed is 50 r / min and the ball milling time is 1 h.
[0033] In this embodiment, the acid solution has a mass fraction of 5%; the potassium permanganate solution has a mass fraction of 8%.
[0034] The mass fraction of the dopamine hydrochloride solution in this embodiment is 7%.
[0035] The preparation method of the modified lanthanum solution in this embodiment is as follows: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
[0036] The sodium silicate solution in this embodiment has a mass fraction of 5%.
[0037] The lanthanum nitrate solution in this embodiment has a mass fraction of 5%.
[0038] Example 3. This embodiment provides a tungsten alloy material for use in high-temperature environments, comprising the following parts by weight of raw materials: 75 parts tungsten, 5 parts chromium, 3.5 parts yttrium powder, 40 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder were added to the modified liquid and stirred. The mixture was then filtered, dried, and the dried product was molded in a mold. The product was then hot-pressed at 145°C for 60 seconds. After molding, the product was sintered to obtain a tungsten alloy material.
[0039] In this embodiment, the stirring speed for the stirring treatment is 470 r / min, and the stirring time is 1 h; the sintering temperature for the sintering treatment is 1500℃, and the sintering time is 1 h.
[0040] The preparation of the deteriorated liquid in this embodiment is as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: 2.5 parts graphene agent and 2 parts silicon carbide are added to 6.5 parts modified lanthanum solution and stirred evenly, then filtered and dried to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; mix the nano-alumina liquid and the compounding agent at a weight ratio of 5:3 and ball mill. After ball milling, a modified liquid is obtained. The ball milling speed is 50 r / min and the ball milling time is 1 h.
[0041] In this embodiment, the acid solution has a mass fraction of 3.5%; the potassium permanganate solution has a mass fraction of 6%.
[0042] The mass fraction of the dopamine hydrochloride solution in this embodiment is 5.5%.
[0043] The preparation method of the modified lanthanum solution in this embodiment is as follows: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
[0044] The sodium silicate solution in this embodiment has a mass fraction of 3.5%.
[0045] The mass fraction of the lanthanum nitrate solution in this embodiment is 4%.
[0046] Comparative Example 1. Unlike Example 3, no deteriorated liquid was added.
[0047] Comparative Example 2. Unlike Example 3, no graphene agent was added to the deteriorated liquid.
[0048] Comparative Example 3. Unlike Example 3, the modified lanthanum solution in the deteriorated liquid was replaced with a 4% lanthanum nitrate solution.
[0049] Comparative Example 4. Unlike Example 3, no nano-alumina liquid was added.
[0050] The product performance tests for Examples 1-3 and Comparative Examples 1-4 are as follows:
[0051] As can be seen from Comparative Examples 1-4 and Example 3, the product of Example 3 has excellent tensile strength and wear resistance, and the synergistic effect between the two is significant, as well as the product has significant temperature stability. The performance of the products tends to deteriorate when no deteriorating liquid is added, no graphene agent is added to the deteriorating liquid, the modified lanthanum liquid in the deteriorating liquid is replaced with a 4% lanthanum nitrate solution, or no nano-alumina liquid is added. Only the product raw materials obtained by the method of this invention have the most significant performance effect.
[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.
[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A tungsten alloy material for use in high-temperature environments, characterized in that, Including the following parts by weight of raw materials: 70-80 parts tungsten, 4-6 parts chromium, 2-5 parts yttrium powder, 35-55 parts modified liquid; The preparation method of tungsten alloy materials is as follows: Tungsten, chromium, and yttrium powder are added to the modified liquid and stirred. The mixture is then filtered, dried, and the dried product is molded in a mold. The product is then warm-pressed at 130-160℃ for 30-90 seconds. After molding, the product is sintered to obtain a tungsten alloy material.
2. The tungsten alloy material for high-temperature environments according to claim 1, characterized in that, The stirring speed for the stirring treatment is 450-500 r / min, and the stirring time is 1 h; the sintering temperature for the sintering treatment is 1500℃, and the sintering time is 1 h.
3. The tungsten alloy material for high-temperature environments according to claim 2, characterized in that, The deteriorated liquid is prepared as follows: S1: First, stir the graphene in a sufficient amount of acid solution until uniform, then filter and dry it. Stir the dried graphene in a sufficient amount of potassium permanganate solution until fully mixed, then wash with water, filter and dry it to obtain graphene agent. S2: Add 2-3 parts graphene agent and 1-3 parts silicon carbide to 5-8 parts modified lanthanum solution, stir evenly, then filter and dry to obtain the compounding agent; S3: Immerse nano-alumina in a sufficient amount of dopamine hydrochloride solution and stir thoroughly to obtain nano-alumina liquid; The nano-alumina liquid and the conditioning agent were mixed at a weight ratio of 5:3 and ball-milled. After ball milling, the modified liquid was obtained. The ball milling speed was 50 r / min and the ball milling time was 1 h.
4. The tungsten alloy material for high-temperature environments according to claim 3, characterized in that, The acid solution has a mass fraction of 2-5%; the potassium permanganate solution has a mass fraction of 4-8%.
5. The tungsten alloy material for high-temperature environments according to claim 3, characterized in that, The mass fraction of the dopamine hydrochloride solution is 4-7%.
6. The tungsten alloy material for high-temperature environments according to claim 3, characterized in that, The preparation method of the modified lanthanum solution is as follows: S11: Immerse nano-titanium dioxide in a sufficient amount of sodium silicate solution and stir until homogeneous, then filter and dry to obtain nano-titanium dioxide agent; S12: Mix nano-titanium dioxide agent, lanthanum nitrate solution and stearic acid in a weight ratio of 2:5:1 to obtain modified lanthanum solution.
7. The tungsten alloy material for high-temperature environments according to claim 6, characterized in that, The sodium silicate solution has a mass fraction of 2-5%.
8. The tungsten alloy material for high-temperature environments according to claim 6, characterized in that, The lanthanum nitrate solution has a mass fraction of 3-5%.