CN110205514A - A kind of powder metallurgy high-strength copper-aluminum nickel material and preparation method thereof - Google Patents
A kind of powder metallurgy high-strength copper-aluminum nickel material and preparation method thereof Download PDFInfo
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- CN110205514A CN110205514A CN201910540119.0A CN201910540119A CN110205514A CN 110205514 A CN110205514 A CN 110205514A CN 201910540119 A CN201910540119 A CN 201910540119A CN 110205514 A CN110205514 A CN 110205514A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
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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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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Abstract
The present patent application belongs to technical field of material, specifically disclose a kind of powder metallurgy high-strength copper-aluminum nickel material and preparation method thereof, Al powder, Ni powder, B powder and Cu powder including mixed sintering together, the quality accounting of each component is Ni powder, the 0.2-0.8%B of the Al powder of 11-13%, 4-8%, surplus Cu.Present invention is mainly used for high-strength copper-aluminum nickel material is prepared, solving the problems, such as that powder metallurgy Batterium material sintered density is lower in the prior art cannot be satisfied the use demand.
Description
Technical field
The invention belongs to technical field of material, specifically disclose a kind of powder metallurgy high-strength copper-aluminum nickel material and its
Preparation method.
Background technique
Aluminium bronze have high intensity, high hardness, good wearability, corrosion stability, excellent thermal coefficient and
The various features such as stable rigidity and shape memory effect are widely used as engineering currently, the most common manufacturing method is casting
Tool, mold, bushing and guide plate.
In the prior art, the Batterium intensity of powder metallurgy process preparation is low, and sample generation is swollen in sintering process
It is swollen, keep sintering more difficult to control, these limit its development and application.The research of powder metallurgy Batterium material is less,
And its sintered density is lower or tensile strength is lower, is easy to appear material damage in use, and not being able to satisfy to use needs
It asks.
Summary of the invention
The purpose of the present invention is to provide a kind of powder metallurgy high-strength copper-aluminum nickel materials and preparation method thereof, existing to solve
There is powder metallurgy Batterium material sintered density lower the problem of cannot satisfying the use demand in technology.
In order to achieve the above object, the technical solution of the present invention is as follows: a kind of powder metallurgy high-strength copper-aluminum nickel material, including
Al powder, Ni powder, B powder and the Cu powder of mixed sintering together, the quality accounting of each component are the Ni of the Al powder of 11-13%, 4-8%
Powder, 0.2-0.8%B, surplus Cu.
Further, the consistency of the material is 91-95%, tensile strength 460-500.
A kind of preparation method of powder metallurgy high-strength copper-aluminum nickel material, which comprises the following steps:
(1) by 11-13%Al powder, 4-8%Ni powder, 0.2-0.8%B powder is added in Cu powder and is mixed, uniformly mixed
Green compact afterwards, compacting pressure 500-600MPa；
(2) green compact is sintered in pipe type sintering furnace, using H2Protection, pipe type sintering furnace heating are carried out in three steps, the
One step first rises to the temperature in pipe type sintering furnace to rise 500 DEG C of heat preservation 1h, and second step is warming up to 900 DEG C of heat preservation 1h, third again
Step is warming up to 1000 DEG C of heat preservation 2h, and then furnace cooling to room temperature obtains the Batterium.
Further, first step temperature rate is 10 DEG C/min in step (2), and second step heating rate is 5 DEG C/min, third step
Heating rate is 5 DEG C/min.In step (2) first step temperature rate be 10 DEG C/min, due in 500 DEG C or less heating rates to burning
Knot does not influence, therefore uses faster heating rate, and second step heating rate is 5 DEG C/min, with this slower heating heating, favorably
It is spread in copper in aluminium, the formation of sintering liquid phase can be reduced, third step heating rate is that 5 DEG C/min has with this slower heating
It is spread in copper conducive to the counterdiffusion and nickel of copper particle, to make in alloy element more evenly.
Further, the Al powder in step (1) is 325-500 mesh, and Ni powder is 500 mesh, and B powder is 5000-10000 mesh, Cu powder
For 325-500 mesh.Al powder in step (1) is 325-500 mesh, the conventional mesh number of selection, and mesh number will increase greatly very much cost, and oxygen
Compound increases, and mesh number is too small can reduce sintered density；Ni powder is 500 mesh, and the conventional mesh number of choosing, mesh number will increase into greatly very much
This, and the too small Ni that will lead to of mesh number is spread unevenly in the alloy；B powder is 5000-10000 mesh, and mesh number is too small so that B is spread
Unevenly, sintered density is caused to reduce, mesh number will lead to greatly very much reunion；Cu powder is 325-500 mesh, the conventional mesh number of choosing, mesh number
It will increase very much cost greatly, and mesh number is too small can reduce sintered density.
Further, the Al powder in step (1) is atomized powder, and Ni powder is carbonyl dust, and Cu powder is electrolytic powder.That selects is general
Logical aluminium powder, because aluminium powder is usually prepared by aerosolization, purity is high, and be conducive to Ni and spread during the sintering process, other copper powders
Purity is low, and electrolytic copper powder is conducive to improve sintered density.
The working principle of the technical program and the beneficial effect is that:
(1) tissue of the Batterium prepared using this ingredient and technique is refined segregation-free, and hole is tiny；
(2) the sintered specimen relative sintered density prepared reaches 91-95% or more, and tensile strength reaches 460MPa；
(3) relative sintered density with higher of powder metallurgy Batterium material of the invention, and tensile strength
Height, from the application field for expanding powder metallurgy Batterium material.
Specific embodiment
It is further described below by specific embodiment:
A kind of powder metallurgy high-strength copper-aluminum nickel material is prepared according to the following steps in each embodiment in this programme, and step is such as
Under:
(1) by 11-13%Al powder, 4-8%Ni powder, 0.2-0.8%B powder is added in Cu powder and is mixed, uniformly mixed
Green compact afterwards, compacting pressure 500-600MPa；
(2) green compact is sintered in pipe type sintering furnace, is protected using H2, and pipe type sintering furnace heating is carried out in three steps, the
One step first rises to the temperature in pipe type sintering furnace to rise 500 DEG C of heat preservation 1h, and second step is warming up to 900 DEG C of heat preservation 1h, third again
Step is warming up to 1000 DEG C of heat preservation 2h, and then furnace cooling to room temperature obtains the Batterium.
Embodiment 1:
By the pure Al powder of 11-13%, the pure Ni powder of 4-8%, the pure B powder of 0.2-0.8% is added in pure Cu powder, and pure aluminium powder is -500
Mesh aerosolization powder, pure copper powder are -500 mesh electrolytic powders, and pure nickel powder is -500 mesh carbonyl powders, pure -5000 mesh of boron powder.After mixing
Green compact, pressure 500MPa are suppressed in punching block.(2) green compact is sintered in pipe type sintering furnace, is protected using H2, with heating
Rate is 10 DEG C/min to 500 DEG C of heat preservation 1h, then with 5 DEG C/min to 900 DEG C of heat preservation 1h, is finally protected with 5 DEG C/min to 1000 DEG C
Warm 2h, then furnace cooling to room temperature obtains the Batterium.
Embodiment 2
By the pure Al powder of 11-13%, the pure Ni powder of 4-8%, the pure B powder of 0.2-0.8% is added in pure Cu powder, and pure aluminium powder is -325
Mesh aerosolization powder, pure copper powder are -325 mesh electrolytic powders, and pure nickel powder is -500 mesh carbonyl powders, pure -5000 mesh of boron powder.After mixing
Green compact, pressure 500MPa are suppressed in punching block.(2) green compact is sintered in pipe type sintering furnace, is protected using H2, with heating
Rate is 10 DEG C/min to 500 DEG C of heat preservation 1h, then with 5 DEG C/min to 900 DEG C of heat preservation 1h, is finally protected with 5 DEG C/min to 1000 DEG C
Warm 2h, then furnace cooling to room temperature obtains the Batterium.
Embodiment 3:
By the pure Al powder of 11-13%, the pure Ni powder of 4-8%, the pure B powder of 0.2-0.8% is added in pure Cu powder, and pure aluminium powder is -500
Mesh aerosolization powder, pure copper powder are -500 mesh electrolytic powders, and pure nickel powder is -500 mesh carbonyl powders, pure -10000 mesh of boron powder.It is uniformly mixed
Green compact, pressure 600MPa are suppressed in punching block afterwards.(2) green compact is sintered in pipe type sintering furnace, is protected using H2, to rise
Warm rate is 10 DEG C/min to 500 DEG C of heat preservation 1h, then with 5 DEG C/min to 900 DEG C of heat preservation 1h, finally with 5 DEG C/min to 1000 DEG C
2h is kept the temperature, then furnace cooling to room temperature obtains the Batterium.
Embodiment 4:
By the pure Al powder of 11-13%, the pure Ni powder of 4-8%, the pure B powder of 0.2-0.8% is added in pure Cu powder, and pure aluminium powder is -325
Mesh aerosolization powder, pure copper powder are -325 mesh electrolytic powders, and pure nickel powder is -500 mesh carbonyl powders, pure -10000 mesh of boron powder.It is uniformly mixed
Green compact, pressure 600MPa are suppressed in punching block afterwards.(2) green compact is sintered in pipe type sintering furnace, is protected using H2, to rise
Warm rate is 10 DEG C/min to 500 DEG C of heat preservation 1h, then with 5 DEG C/min to 900 DEG C of heat preservation 1h, finally with 5 DEG C/min to 1000 DEG C
2h is kept the temperature, then furnace cooling to room temperature obtains the Batterium.
Hardness, the compression strength of the above embodiments 1-4 powdered metallurgy copper aluminum alloy materials are determined, the result is as follows:
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.
Claims (6)
1. a kind of powder metallurgy high-strength copper-aluminum nickel material, which is characterized in that including Al powder, the Ni powder, B of mixed sintering together
Powder and Cu powder, the quality accounting of each component are Ni powder, the 0.2-0.8%B of the Al powder of 11-13%, 4-8%, surplus Cu.
2. a kind of powder metallurgy high-strength copper-aluminum nickel material according to claim 1, which is characterized in that the densification of the material
Degree is 91-95%, tensile strength 460-500.
3. a kind of preparation method of powder metallurgy high-strength copper-aluminum nickel material, which comprises the following steps:
(1) by 11-13%Al powder, 4-8%Ni powder, 0.2-0.8%B powder is added in Cu powder and is mixed, pressed after mixing
Base, compacting pressure 500-600MPa；
(2) green compact is sintered in pipe type sintering furnace, using H2Protection, pipe type sintering furnace heating are carried out in three steps, and the first step will
Temperature in pipe type sintering furnace first rises to rise 500 DEG C of heat preservation 1h, and second step is warming up to 900 DEG C of heat preservation 1h, third step heating again
To 1000 DEG C of heat preservation 2h, then furnace cooling to room temperature obtains the Batterium.
4. a kind of preparation method of powder metallurgy high-strength copper-aluminum nickel material according to claim 1, which is characterized in that step
Suddenly in (2) first step temperature rate be 10 DEG C/min, second step heating rate be 5 DEG C/min, third step heating rate be 5 DEG C/
min。
5. a kind of preparation method of powder metallurgy high-strength copper-aluminum nickel material according to claim 3, which is characterized in that step
Suddenly the Al powder in (1) is 325-500 mesh, and Ni powder is 500 mesh, and B powder is 5000-10000 mesh, and Cu powder is 325-500 mesh.
6. a kind of preparation method of powder metallurgy high-strength copper-aluminum nickel material according to claim 5, which is characterized in that step
Suddenly the Al powder in (1) is atomized powder, and Ni powder is carbonyl dust, and Cu powder is electrolytic powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910540119.0A CN110205514A (en) | 2019-06-21 | 2019-06-21 | A kind of powder metallurgy high-strength copper-aluminum nickel material and preparation method thereof |
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| CN201910540119.0A CN110205514A (en) | 2019-06-21 | 2019-06-21 | A kind of powder metallurgy high-strength copper-aluminum nickel material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215436A (en) * | 2021-04-14 | 2021-08-06 | 安徽绿能技术研究院有限公司 | Copper-aluminum-nickel alloy material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
| CN109663907A (en) * | 2019-01-09 | 2019-04-23 | 北京科技大学 | A kind of preparation method of powder metallurgy high-strength copper aluminum material |
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2019
- 2019-06-21 CN CN201910540119.0A patent/CN110205514A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
| CN109663907A (en) * | 2019-01-09 | 2019-04-23 | 北京科技大学 | A kind of preparation method of powder metallurgy high-strength copper aluminum material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215436A (en) * | 2021-04-14 | 2021-08-06 | 安徽绿能技术研究院有限公司 | Copper-aluminum-nickel alloy material and preparation method thereof |
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