CN102676869A - Cu-Co-Cr shell-core structure ternary alloy and preparation method thereof - Google Patents
Cu-Co-Cr shell-core structure ternary alloy and preparation method thereof Download PDFInfo
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- CN102676869A CN102676869A CN2012101465350A CN201210146535A CN102676869A CN 102676869 A CN102676869 A CN 102676869A CN 2012101465350 A CN2012101465350 A CN 2012101465350A CN 201210146535 A CN201210146535 A CN 201210146535A CN 102676869 A CN102676869 A CN 102676869A
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Abstract
The invention relates to a Cu-Co-Cr shell-core structure ternary alloy and a preparation method thereof. The alloy is characterized by being shown as Cu100-x-yCoxCry, wherein x is more than or equal to 10; and y is less than or equal to 30. The purities of the metals Cu, Co and Cr are over 99.99 percent. Structures obtained according to different alloy component proportions are the same by using an electromagnetic suspension method, different alloy proportions do not influence the phase constitution of the alloy, a special shell-core structure can be obtained in any way, and the performance of the alloy is improved.
Description
Technical field
The present invention relates to a kind of Cu-Co-Cr core-shell structure ternary alloy and preparation method thereof, the shell-core structure of preparation Cu-Co-Cr ternary alloy.
Background technology
Rapid solidification can make liquid, the solid phase speed that accelerates carry out, and obtains composition profiles, weave construction and phase composite that conventional cast can't obtain.Compare with the material of traditional method preparation, the material of flash set technology preparation has superior mechanical property, corrosion resistance nature and electromagnetic property.Rapid solidification can be avoided melt issuable various association defectives in the routine casting process of setting, obtain composition evenly, organize microtexture meticulous and that phase structure is special, improved physics, chemistry and the mechanical property of metallic substance.
Method through using electromagnetic suspension can make alloy reach certain condensate depression.The difference of rate of cooling causes the respective change of thermodynamics and kinetics to produce different heterogeneous microstructures.Many investigators test liquid phase separation and the rapid solidification of studying various alloys through different rapid solidifications, like Cu-Co, and Cu-Cr, Cu-Ta, Cu-Fe or the like.Up to the present, the research of binary system is ripe relatively.In recent years, many investigators have studied the influence of the adding of the 3rd constituent element to former binary system.Add the 3rd constituent element or more constituent element, tend to influence, make the tissue topography of sample the metastable phase sepn process, intensity, hardness, performances such as erosion resistance improve.Obtain different heterogeneous microstructures.
Summary of the invention
The problem that solves
Weak point for fear of prior art; The present invention proposes a kind of Cu-Co-Cr core-shell structure ternary alloy and preparation method thereof; The phase composite of the ternary alloy through analyzing different compositions obtains the constructional feature of the solidified structure of ternary alloy, obtains the ternary alloy of new core-shell structure.
Technical scheme
A kind of Cu-Co-Cr core-shell structure ternary alloy is characterized in that: the composition of alloy is Cu
100x-yCo
xCr
y, 10≤x wherein, y≤30.
Said Cu, Co and Cr metal purity are more than 99.99%.
A kind of method for preparing Cu-Co-Cr core-shell structure ternary alloy is characterized in that step is following:
Step 1: use the ultrasonic cleaning appearance to clean, prepare burden according to the composition of alloy to choosing alloy raw material,
Step 2: the alloy raw material that step 1 is cleaned is put into electric arc furnace, and electric arc furnace is evacuated to vacuum tightness 3 * 10
-3Pa, the counter then purity of filling is 99.999% Ar gas to 1 * 10
-1MPa;
Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, change then different directions repeatedly fusion alloy is mixed obtain mother alloy;
Step 4 adopts electromagnetic suspension to prepare alloy: Vakuumkammer is evacuated to 10
-4Behind the Pa; Anti-high-purity 99.995% Ar gas to 1 normal atmosphere of filling is as shielding gas; Utilize electromagnetic induction heater that mother alloy is melted, make its cooling, utilize the He-8vol.%H after the cooled with liquid nitrogen then through 99.999% the He gas that cooled off to molten alloy hydrojet nitrogen
2Cooling gas to solidifying, obtains having the Cu of core-shell structure with the sample blast-cold
40Co
30Cr
30Ternary alloy.
Change in the said step 3 different directions repeatedly fusion repeatedly be 3～5 times.
Beneficial effect
The invention provides a kind of Cu-Co-Cr ternary alloy core-shell structure and the preparation method, the research of binary system comparative maturity under the normal condition, and also fewer to the research of three-part system; Add the 3rd constituent element or more constituent element, tend to influence, make the tissue topography of sample the metastable phase sepn process; Intensity, hardness, performances such as erosion resistance are improved; The present invention studies the rapid solidification of Cu-Co-Cr ternary alloy, and is extensive in the application prospect in each field.
Be the same through the structure of using electromagnetic suspension method different-alloy component proportions to obtain in the present invention, explain that different alloy ratios can not influence the phase composite of alloy, can both obtain this special core-shell structure, improved the performance of alloy.
The experiment accompanying drawing
Fig. 1: Cu
40Co
30Cr
30The ternary alloy metallograph;
Fig. 2: Cu
60Co
30Cr
10The ternary alloy metallograph;
Fig. 3: Cu
80Co
10Cr
10The ternary alloy metallograph.
Concrete experimental program
Combine embodiment, accompanying drawing that the present invention is further described at present:
Instance 1:
The first step: will test required sample raw material and put into alcohol and use the excusing from death cleaning apparatus to clean, and carry out repeatedly 4 times, and put into drying machine drying.With the weighing used tool,, also use alcohol to clean simultaneously like tweezers, pliers.Use the electronic balance of ten thousand/gram precision to weigh 1.7369gCu, 1.2084gCo, 1.0667gCr respectively;
Second step: put into the copper crucible of water-cooled of vacuum oven to accurate each the pure metal material piece of quality, Vakuumkammer is evacuated to 3 * 10
-3Behind the Pa, applying argon gas to 1 * 10
-1MPa.Connect argon arc melting power supply, under argon shield, raw material is smelted into alloy cast ingot, for preventing component segregation, mother alloy needs melt back about 4 times.Obtain Cu
40Co
30Cr
30Mother alloy;
The 3rd step: adopt electromagnetic suspension to prepare alloy, in the experiment Vakuumkammer is evacuated to 10
-4Behind the Pa, counter fill high-purity Ar (99.995%) to 1 normal atmosphere as shielding gas to prevent that sample when heating is oxidized.Utilize electromagnetic induction heater, sample is melted, and after fully overheated, it is cooled off, utilize the He-8vol.%H after the cooled with liquid nitrogen then through the He gas (99.999%) that cool off to molten alloy hydrojet nitrogen
2Cooling gas with the sample blast-cold to solidifying.Obtain having the Cu of core-shell structure
40Co
30Cr
30Ternary alloy, as shown in Figure 1.
Instance 2:
The first step: will test required sample raw material and put into alcohol and use the excusing from death cleaning apparatus to clean, and carry out repeatedly 4 times, and put into drying machine drying.With the weighing used tool,, also use alcohol to clean simultaneously like tweezers, pliers.Use the electronic balance of ten thousand/gram precision to weigh 2.5379gCu, 1.1771gCo, 0.3465gCr respectively;
Second step: put into the copper crucible of water-cooled of vacuum oven to accurate each the pure metal material piece of quality, Vakuumkammer is evacuated to 3 * 10
-3Behind the Pa, applying argon gas to 1 * 10
-1MPa.Connect argon arc melting power supply, under argon shield, raw material is smelted into alloy cast ingot, for preventing component segregation, mother alloy needs melt back about 4 times.Obtain Cu
60Co
30Cr
10Mother alloy;
The 3rd step: adopt electromagnetic suspension to prepare alloy, in the experiment Vakuumkammer is evacuated to 10
-4Behind the Pa, counter fill high-purity Ar (99.995%) to 1 normal atmosphere as shielding gas to prevent that sample when heating is oxidized.Utilize electromagnetic induction heater, sample is melted, and after fully overheated, it is cooled off, utilize the He-8vol.%H after the cooled with liquid nitrogen then through the He gas (99.999%) that cool off to molten alloy hydrojet nitrogen
2Cooling gas with the sample blast-cold to solidifying.Obtain having the Cu of core-shell structure
60Co
30Cr
10Ternary alloy, as shown in Figure 2.
Instance 3:
The first step: will test required sample raw material and put into alcohol and use the excusing from death cleaning apparatus to clean, and carry out repeatedly 4 times, and put into drying machine drying.With the weighing used tool,, also use alcohol to clean simultaneously like tweezers, pliers.Use the electronic balance of ten thousand/gram precision to weigh 2.5379gCu, 1.1771gCo, 0.3465gCr respectively;
Second step: put into the copper crucible of water-cooled of vacuum oven to accurate each the pure metal material piece of quality, Vakuumkammer is evacuated to 3 * 10
-3Behind the Pa, applying argon gas to 1 * 10
-1MPa.Connect argon arc melting power supply, under argon shield, raw material is smelted into alloy cast ingot, for preventing component segregation, mother alloy needs melt back about 4 times.Obtain Cu
80Co
10Cr
10Mother alloy;
The 3rd step: adopt electromagnetic suspension to prepare alloy, in the experiment Vakuumkammer is evacuated to 10
-4Behind the Pa, counter fill high-purity Ar (99.995%) to 1 normal atmosphere as shielding gas to prevent that sample when heating is oxidized.Utilize electromagnetic induction heater, sample is melted, and after fully overheated, it is cooled off, utilize the He-8vol.%H after the cooled with liquid nitrogen then through the He gas (99.999%) that cool off to molten alloy hydrojet nitrogen
2Cooling gas with the sample blast-cold to solidifying.Obtain having the Cu of core-shell structure
80Co
10Cr
10Ternary alloy, as shown in Figure 3.
Claims (4)
1. Cu-Co-Cr core-shell structure ternary alloy, it is characterized in that: the composition of alloy is Cu
100-x-yCo
xCr
y, 10≤x wherein, y≤30.
2. Cu-Co-Cr core-shell structure ternary alloy according to claim 1 is characterized in that: said Cu, Co and Cr metal purity are more than 99.99%.
3. method for preparing each said Cu-Co-Cr core-shell structure ternary alloy of claim 1～2 is characterized in that step is following:
Step 1: use the ultrasonic cleaning appearance to clean, prepare burden according to the composition of alloy to choosing alloy raw material,
Step 2: the alloy raw material that step 1 is cleaned is put into electric arc furnace, and electric arc furnace is evacuated to vacuum tightness 3 * 10
-3Pa, the counter then purity of filling is 99.999% Ar gas to 1 * 10
-1MPa;
Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, change then different directions repeatedly fusion alloy is mixed obtain mother alloy;
Step 4 adopts electromagnetic suspension to prepare alloy: Vakuumkammer is evacuated to 10
-4Behind the Pa; Anti-high-purity 99.995% Ar gas to 1 normal atmosphere of filling is as shielding gas; Utilize electromagnetic induction heater that mother alloy is melted, make its cooling, utilize the He-8vol.%H after the cooled with liquid nitrogen then through 99.999% the He gas that cooled off to molten alloy hydrojet nitrogen
2Cooling gas to solidifying, obtains having the Cu of core-shell structure with the sample blast-cold
40Co
30Cr
30Ternary alloy.
4. preparation method according to claim 3 is characterized in that: change in the said step 3 different directions repeatedly fusion repeatedly be 3～5 times.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468476A (en) * | 2018-12-29 | 2019-03-15 | 江苏科技大学 | A method of copper alloy comprehensive performance is improved using magnetic suspension technique |
| CN113881910A (en) * | 2021-10-28 | 2022-01-04 | 西北工业大学 | Method for regulating immiscible alloy structure by using strong magnetic field |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283856A (en) * | 1995-04-10 | 1996-10-29 | Nippon Steel Corp | Production of semihard magnetic material of fe-cu-co alloy |
| CN1948529A (en) * | 2006-10-30 | 2007-04-18 | 西安交通大学 | Molten body quick quenching copper chromium titanium zirconium cobalt contact head material |
-
2012
- 2012-05-12 CN CN2012101465350A patent/CN102676869A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283856A (en) * | 1995-04-10 | 1996-10-29 | Nippon Steel Corp | Production of semihard magnetic material of fe-cu-co alloy |
| CN1948529A (en) * | 2006-10-30 | 2007-04-18 | 西安交通大学 | Molten body quick quenching copper chromium titanium zirconium cobalt contact head material |
Non-Patent Citations (2)
| Title |
|---|
| 曾祥等: "不同冷却条件下Cu40Co30Cr30三元合金的液相分离凝固组织", 《材料导报B：研究篇》 * |
| 王静等: "深过冷Cu40Co40Ti20合金的亚稳相分离与快速凝固", 《铸造技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468476A (en) * | 2018-12-29 | 2019-03-15 | 江苏科技大学 | A method of copper alloy comprehensive performance is improved using magnetic suspension technique |
| CN109468476B (en) * | 2018-12-29 | 2020-05-22 | 江苏科技大学 | Method for improving comprehensive performance of copper alloy by adopting magnetic suspension process |
| CN113881910A (en) * | 2021-10-28 | 2022-01-04 | 西北工业大学 | Method for regulating immiscible alloy structure by using strong magnetic field |
| CN113881910B (en) * | 2021-10-28 | 2022-07-29 | 西北工业大学 | Method for regulating immiscible alloy structure by using strong magnetic field |
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Application publication date: 20120919 |