CN101195879A - Al2O3dispersion strengthening copper alloy and method for producing the same - Google Patents
Al2O3dispersion strengthening copper alloy and method for producing the same Download PDFInfo
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- CN101195879A CN101195879A CNA2006101284218A CN200610128421A CN101195879A CN 101195879 A CN101195879 A CN 101195879A CN A2006101284218 A CNA2006101284218 A CN A2006101284218A CN 200610128421 A CN200610128421 A CN 200610128421A CN 101195879 A CN101195879 A CN 101195879A
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Abstract
The invention provides an Al2O3 dispersion strengthening copper alloy and the preparation method thereof. The aluminum content of the raw material is 0.05 to 0.6 wt percent, the content of foreign impurities is not higher than 0.5 wt percent, the basis material is copper; the production process adopts the steps of the whole copper-aluminum alloy powder superficial oxidation oxygen replenishment, ingot casting, internal oxidation, deoxidization, agglomeration, squeezing, cold processing and performance testing, the produced Al2O3 dispersion strengthening copper alloy has the advantages that the intensity and the rigidity are higher, the performance of anti high temperature softening is good, simultaneously, the invention has the good performance of electric conduction and heat conduction, and the invention is the ideal material for producing a resistance welding electrode, the lead frame of an integrated circuit, the conductor rod of an high pressure disconnecting switch and other parts at present.
Description
Technical field:
The invention belongs to the metallic substance technical field, particularly a kind of Al
2O
3Dispersion strengthening copper alloy and preparation method thereof.
Background technology:
Along with the develop rapidly of automotive industry, spot welding as a kind of high-level efficiency, simple to operate, easily realize the resistance-welding process commonly used of mechanize and automatization, be widely used in the welding of automobile panel.The traditional material of making spot-wedling electrode mainly is QBe
2, CuZrNb, CuCr, CuCrZr and CuNi
2Copper alloys such as Si, this class electrode when spot welding, often take place thermoplastic become jumping-up, electrical wear, with by the inefficacy of forms such as the welding steel plate is bonding, reduced production efficiency.For this reason, development has high hot strength and softening temperature, and the novel point welding electrode material that possesses high conductivity simultaneously becomes urgent need.Dispersion strengthening copper alloy is the new function and the structural composite material of development in recent years, has high hot strength, compressive yield strength and electric conductivity, is the ideal substitute of conventional point welding electrode material, has broad application prospects.
Aspect relating to dispersion strengthening copper alloy, in the retrieval of the domestic and foreign literature of research, retrieve Chinese patent 2004100229836.0, dispersion strengthening copper alloy and preparation technology's method thereof:
The dispersion strengthening copper alloy preparation technology that this patent relates to is as follows: 1. powder process; 2. sieve copper-aluminium alloy powder as oxygen source; 3. oxygen source baking will be cupric oxide as the copper-aluminium alloy powder surface oxidation of oxygen source; 4. oxygen source decomposes, and the copper-aluminium alloy powder of surface oxidation under certain atmosphere and under the temperature, is decomposed into Red copper oxide to cupric oxide; 5. broken, the oxygen source powder fragmentation of oxygen source being decomposed the back caking; 6. oxygen source determination of oxygen content; 7. mix powder, according to a certain percentage that oxygen source and unoxidized copper-aluminium alloy powder is admixed together; 8. isostatic pressing; 9. interior oxidation-reduction-sintering; 10. push and following process.
Its technology has the following disadvantages:
1. complex process;
2. in the interior oxidising process, the diffusion process of oxygen is to be diffused into unoxidized copper-aluminium alloy powder surface by oxygen source particle oxygen surface and inner oxygen, again by surface diffusion to inside, the alumina in the alloy powder is turned to Al
2O
3Adopt the interior oxidization time of this technology longer, and it is complete to be difficult for oxidation.
Do not see with of the present invention and join oxygen technology and the similar relevant patent documentation of subsequent preparation technology what whole powder surfaces were oxidized to cupric oxide.
Summary of the invention:
In order to overcome deficiency of the prior art, the purpose of this invention is to provide a kind of Al
2O
3Dispersion strengthening copper alloy and preparation method thereof makes technical process simple, strength of materials height, electric conductivity height.
For achieving the above object, the present invention adopts following technical scheme:
Described Al
2O
3Dispersion strengthening copper alloy contains aluminium 0.05～0.6wt% in its material component that adopts, and all the other make body material for copper, and foreign matter content is less than 0.5wt%; When making dispersion strengthening copper alloy, whole copper-Al alloy powder surface oxidation is joined oxygen, and all copper-Al alloy powder is heated to 150 ℃～500 ℃ in oxidizing atmosphere, is incubated 1～40 hour, carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy; Carry out the isostatic pressing ingot; Interior oxidation, reduction, sintering: under nitrogen protection ingot blank is heated to 700 ℃～950 ℃, is incubated 0.5～4 hour, the oxygen by powder surface turns to Al to the diffusion of powder particle inside with intragranular alumina
2O
3, be called interior oxidation; Change atmosphere again, 750 ℃～1000 ℃ reduction and sintering 2～10 hours are heated to 750～950 ℃ with the sintering ingot blank that makes under hydrogen atmosphere; Be squeezed into bar or tubing; Be processed into finished product through drawing; Its Al
2O
3Al in the dispersion strengthening copper alloy finished product
2O
3Content is 0.1～1.2wt%.
A kind of Al
2O
3The preparation method of dispersion strengthening copper alloy gets aluminum 0.05～0.6wt%, and all the other make body material for copper, and foreign matter content is less than 0.5wt%; The preparation method who adopts:
1), whole copper-Al alloy powder surface oxidation is joined oxygen, all copper-Al alloy powder is heated to 150 ℃～500 ℃ in oxidizing atmosphere, be incubated 1～40 hour, carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy;
2), system ingot: carry out the isostatic pressing ingot;
3), interior oxidation, reduction, sintering: under nitrogen protection ingot blank is heated to 700 ℃～950 ℃, is incubated 0.5～4 hour, the oxygen by powder surface turns to Al to the diffusion of powder particle inside with intragranular alumina
2O
3, be called interior oxidation; Change atmosphere again, 750 ℃～1000 ℃ reduction and sintering 2～10 hours are heated to 750～950 ℃ with the sintering ingot blank that makes under hydrogen atmosphere;
4), extruding: be squeezed into bar or tubing;
5), cold working: be processed into finished product through drawing.
Owing to adopted technical scheme as mentioned above, the present invention has following superiority:
1, technology is simple, the production efficiency height.Adopt this technology to omit powder sieving, oxygen source baking, oxygen source decomposition, broken and mixed powder operation, shortened technical process, improved efficient.
2. the time lacks, and save energy reduces cost.
3, the finished product tensile strength is greater than 500N/mm
2, softening temperature is higher than 900 ℃, and electric conductivity＞80%IACS has higher mechanical property, the good high temperature resistance property of softening and favorable conductive, heat conductivility.Adopt the dispersion strengthening copper alloy of above-mentioned technology manufacturing can be applied to make resistance welding electrode, current-carrying spring, electric contactor segment, as: motor rotor rod, coupling end and supporting pieces, engine lead frame etc., can obviously improve use properties and life-span, be the ideal material of making this series products.
Description of drawings:
Fig. 1 is Al
2O
3Dispersion strengthening copper alloy preparation technology skeleton diagram:
Embodiment one:
The material that is used for resistance welding electrode with production is an example: get aluminium content 0.3wt%, all the other are the copper-aluminum alloy powder of copper;
1. all copper, Al alloy powder surface oxidation are joined oxygen: with copper-aluminum alloy powder oxidation 20 hours in oxidizing atmosphere; Carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy;
2. system ingot: the powder after the total oxygenization is packed into etc. in the static pressure gum cover, then pressurized system 200N/mm in the isostatic cool pressing Oil cylinder
2Moulding;
3. interior oxidation: waiting static pressure ingot under 880 ℃ of nitrogen protections, to handle 2 hours;
4. sintering, reduction: reduction is 5 hours in 900 ℃ of hydrogen atmospheres, again sintering 2 hours in 980 ℃ of hydrogen atmospheres;
5. extruding: the ingot blank behind the sintering is squeezed into base under 850 ℃;
6. cold working: extrusion billet is cold drawn to required specification.
Embodiment two:
To produce high voltage isolator conducting rod alloy is example, raw material aluminium content 0.15wt%, and all the other are the copper-aluminum alloy powder of copper;
1. all oxygen is joined in the powder surface oxidations: with copper-aluminum alloy powder oxidation 20 hours in oxidizing atmosphere; Carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy;
2. system ingot: the powder after the total oxygenization is packed into etc. in the static pressure gum cover, then pressurized system 200N/mm in the isostatic cool pressing Oil cylinder
2Moulding;
3. interior oxidation: waiting static pressure ingot under 880 ℃ of nitrogen protections, to handle 2 hours;
4. sintering, reduction: reduction is 5 hours in 900 ℃ of hydrogen atmospheres, again sintering 2 hours in 980 ℃ of hydrogen atmospheres;
5. extruding: the ingot blank behind the sintering is squeezed into base under 850 ℃;
6. cold working: extrusion billet is cold drawn to required specification.
Claims (2)
1. Al
2O
3Dispersion strengthening copper alloy is characterized in that: contain aluminium 0.05～0.6wt% in its material component that adopts, all the other make body material for copper, and foreign matter content is less than 0.5wt%; Make Al
2O
3During dispersion strengthening copper alloy, whole copper-Al alloy powder surface oxidation is joined oxygen, and all copper-Al alloy powder is heated to 150 ℃～500 ℃ in oxidizing atmosphere, is incubated 1～40 hour, carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy; Carry out the isostatic pressing ingot; Interior oxidation, reduction, sintering: under nitrogen protection ingot blank is heated to 700 ℃～950 ℃, is incubated 0.5～4 hour, the oxygen by powder surface turns to Al to the diffusion of powder particle inside with intragranular alumina
2O
3, be called interior oxidation; Change atmosphere again, 750 ℃～1000 ℃ reduction and sintering 2～10 hours are heated to 750～950 ℃ with the sintering ingot blank that makes under hydrogen atmosphere; Be squeezed into bar or tubing; Finished product is processed in drawing; Al in the finished product
2O
3Content is 0.1～1.2wt%.
2. Al
2O
3The preparation method of dispersion strengthening copper alloy is characterized in that: it gets aluminium content 0.05～0.6wt%, all the other make body material, the foreign matter content copper-aluminum alloy powder less than 0.5wt% for copper; The preparation method who adopts:
1), whole copper-Al alloy powder surface oxidation is joined oxygen, all copper-Al alloy powder is heated to 150 ℃～500 ℃ in oxidizing atmosphere, be incubated 1～40 hour, carry out surface oxidation, join that aluminium content atomic ratio is between 3: 2～6: 2 in oxygen amount and the powdered alloy;
2), system ingot: carry out the isostatic pressing ingot;
3), interior oxidation, reduction, sintering: under nitrogen protection ingot blank is heated to 700 ℃～950 ℃, is incubated 0.5～4 hour, the oxygen by powder surface turns to Al to the diffusion of powder particle inside with intragranular alumina
2O
3, be called interior oxidation; Change atmosphere again, 750 ℃～1000 ℃ reduction and sintering 2～10 hours are heated to 750～950 ℃ with the sintering ingot blank that makes under hydrogen atmosphere;
4), extruding: be squeezed into bar or tubing;
5), cold working: be processed into finished product through drawing.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997103A (en) * | 2009-08-19 | 2011-03-30 | 深圳市倍特力电池有限公司 | Welding of battery nickel sheets |
| CN101586198B (en) * | 2009-06-26 | 2011-07-27 | 中南大学 | A process for preparing aluminum oxide dispersion strengthened copper with high strength and high conductivity |
| CN102398109A (en) * | 2010-09-16 | 2012-04-04 | 现代自动车株式会社 | One-sided spot welding device |
| CN101708535B (en) * | 2009-12-03 | 2012-04-18 | 中国船舶重工集团公司第七二五研究所 | Continuously-cast crystallizer copper liner |
| CN102560163A (en) * | 2012-01-12 | 2012-07-11 | 广东新劲刚超硬材料有限公司 | Method for preparing dispersion strengthened copper by adopting ultrasonic dispersion |
| CN104942293A (en) * | 2015-06-26 | 2015-09-30 | 中国船舶重工集团公司第七二五研究所 | Manufacturing method of aluminum oxide copper liner for pipeline welding internal jointing device |
| CN106001596A (en) * | 2016-06-02 | 2016-10-12 | 河北工业职业技术学院 | Preparation method for spherical-phase dispersion strengthened metal base composite |
| CN106521205A (en) * | 2016-10-12 | 2017-03-22 | 上海大学 | Method for preparing aluminum oxide dispersion strengthening copper-based composite material |
| CN106756135A (en) * | 2016-11-11 | 2017-05-31 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method of alumina dispersion-strenghtened copper alloy bar material |
| CN107863199A (en) * | 2017-10-11 | 2018-03-30 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method of the copper-clad dispersion copper conducting rod of high-strength highly-conductive high softening temperature |
| CN108543945A (en) * | 2018-05-23 | 2018-09-18 | 中山麓科睿材科技有限公司 | A kind of external oxidation preparation method of aluminum oxide dispersion copper alloy powder |
| CN110331308A (en) * | 2019-08-16 | 2019-10-15 | 苏州金江铜业有限公司 | The preparation method of the alumina dispersion-strenghtened tellurium copper composite material of easy turning |
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2006
- 2006-12-08 CN CN2006101284218A patent/CN101195879B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586198B (en) * | 2009-06-26 | 2011-07-27 | 中南大学 | A process for preparing aluminum oxide dispersion strengthened copper with high strength and high conductivity |
| CN101997103A (en) * | 2009-08-19 | 2011-03-30 | 深圳市倍特力电池有限公司 | Welding of battery nickel sheets |
| CN101708535B (en) * | 2009-12-03 | 2012-04-18 | 中国船舶重工集团公司第七二五研究所 | Continuously-cast crystallizer copper liner |
| CN102398109B (en) * | 2010-09-16 | 2015-11-25 | 现代自动车株式会社 | One-sided spot welding device |
| CN102398109A (en) * | 2010-09-16 | 2012-04-04 | 现代自动车株式会社 | One-sided spot welding device |
| CN102560163A (en) * | 2012-01-12 | 2012-07-11 | 广东新劲刚超硬材料有限公司 | Method for preparing dispersion strengthened copper by adopting ultrasonic dispersion |
| CN102560163B (en) * | 2012-01-12 | 2013-07-31 | 广东新劲刚新材料科技股份有限公司 | Method for preparing dispersion strengthened copper by adopting ultrasonic dispersion |
| CN104942293A (en) * | 2015-06-26 | 2015-09-30 | 中国船舶重工集团公司第七二五研究所 | Manufacturing method of aluminum oxide copper liner for pipeline welding internal jointing device |
| CN106001596A (en) * | 2016-06-02 | 2016-10-12 | 河北工业职业技术学院 | Preparation method for spherical-phase dispersion strengthened metal base composite |
| CN106521205A (en) * | 2016-10-12 | 2017-03-22 | 上海大学 | Method for preparing aluminum oxide dispersion strengthening copper-based composite material |
| CN106756135A (en) * | 2016-11-11 | 2017-05-31 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method of alumina dispersion-strenghtened copper alloy bar material |
| CN107863199A (en) * | 2017-10-11 | 2018-03-30 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method of the copper-clad dispersion copper conducting rod of high-strength highly-conductive high softening temperature |
| CN108543945A (en) * | 2018-05-23 | 2018-09-18 | 中山麓科睿材科技有限公司 | A kind of external oxidation preparation method of aluminum oxide dispersion copper alloy powder |
| CN110331308A (en) * | 2019-08-16 | 2019-10-15 | 苏州金江铜业有限公司 | The preparation method of the alumina dispersion-strenghtened tellurium copper composite material of easy turning |
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|---|---|
| CN101195879B (en) | 2010-09-29 |
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