CN105355616B - A kind of anti-oxidation metal product - Google Patents
A kind of anti-oxidation metal product Download PDFInfo
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- CN105355616B CN105355616B CN201510812752.2A CN201510812752A CN105355616B CN 105355616 B CN105355616 B CN 105355616B CN 201510812752 A CN201510812752 A CN 201510812752A CN 105355616 B CN105355616 B CN 105355616B
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
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- H01L2224/45565—Single coating layer
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- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/4554—Coating
- H01L2224/45599—Material
- H01L2224/45698—Material with a principal constituent of the material being a combination of two or more materials in the form of a matrix with a filler, i.e. being a hybrid material, e.g. segmented structures, foams
- H01L2224/45699—Material of the matrix
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- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/4554—Coating
- H01L2224/45599—Material
- H01L2224/45698—Material with a principal constituent of the material being a combination of two or more materials in the form of a matrix with a filler, i.e. being a hybrid material, e.g. segmented structures, foams
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- H01L2224/45799—Base material
- H01L2224/458—Base material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45817—Base material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 400°C and less than 950°C
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Abstract
The invention discloses a kind of anti-oxidation metal product, anti-oxidation metal product is bonding brass wire, and purity >=99.99wt% of copper wire, its surface is made up of coated with the anti oxidation layer that thickness is 1~2nm, anti oxidation layer the component of following parts by weight：Fuller olefinic carbon 60 .1~0.5 part, 2~8 parts of aluminium, 8~15 parts of polyethylene, 11~16 parts of polyacrylamide, 1~3 part of carbon disulfide.The metallic article of the present invention has coat adhesion high, and pin hole rate is low, high temperature resistant, and the features such as resistance to oxidation, resistivity is low, has excellent conductibility, breakdown voltage resistant height.Wherein it is possible to be resistant to more than 400 DEG C of high temperature, 200 DEG C of conditions are also can tolerate 3 hours, so as to effectively solve copper wire problem of oxidation.
Description
Technical field
The present invention relates to a kind of anti-oxidation metal product.Belong to metallic article technical field.
Background technology
Bonding gold wire is a kind of conventional metallic article of microelectronics industry, and it is to be used as connecting line in integrated circuit
Golden alloy wire, it is integrated circuit or discrete device and the crucial lead material of LED connections.
Rise recently as the hurricane of developing rapidly for semicon industry, and the price of gold, to production and using company all
Bring huge cost pressure.In addition, the integration degree more and more higher of integrated circuit, circuit plate thickness is less and less, device
On number of electrodes it is more and more, electrode spacing is more and more narrow, and packaging density also accordingly becomes less and less, and bonding gold wire is not
The encapsulation requirement increasingly improved can be met, bonding brass wire turns into the ideal material for substituting bonding gold wire, but copper cash easily aoxidizes
Characteristic hinder the application and development of copper cash.This requires the inoxidizability when storage and application to copper cash proposes will
Ask.Moreover, also to add inert gas shielding in existing bonding brass wire is packed and stored in preparation process；The storage of bare copper wire
Deposit and service life is all very short, which increases the using effect of the cost of production and storage, also further influence final products.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of anti-oxidation metal product.
To achieve the above object, the present invention uses following technical proposals：
A kind of anti-oxidation metal product, the anti-oxidation metal product are bonding brass wire, the purity of the copper wire >=
99.99wt%, coated with the anti oxidation layer that thickness is 1~2nm, the anti oxidation layer is by the component of following parts by weight on its surface
Composition：Fuller olefinic carbon 60 .1~0.5 part, 2~8 parts of aluminium, 8~15 parts of polyethylene, 11~16 parts of polyacrylamide, carbon disulfide 1~
3 parts.
Preferably, the anti oxidation layer is made up of the component of following parts by weight：Fuller olefinic carbon 60 .1~0.4 part, aluminium 3~8
Part, 9~14 parts of polyethylene, 12~15 parts of polyacrylamide, 1~2 part of carbon disulfide.
It is further preferred that what the anti oxidation layer was made up of the component of following parts by weight：Fuller olefinic carbon 60 .2~0.3 part,
4~7 parts of aluminium, 10~13 parts of polyethylene, 13~15 parts of polyacrylamide, 1~2 part of carbon disulfide.
Still more preferably, the anti oxidation layer is made up of the component of following parts by weight：Fuller olefinic carbon 60 .2 parts, aluminium 6
Part, 12 parts of polyethylene, 14 parts of polyacrylamide, 2 parts of carbon disulfide.
The preparation method of the anti-oxidation metal product, including step：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed are 0.5~2m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the key after annealing
Close copper wire to immerse in the trough for filling coating liquid, by the effect of surface tension of liquid copper wire infiltration below liquid level, is made
Anti oxidation layer is coated uniformly on bonding brass wire surface；
（6）150~300 DEG C of drying.
Beneficial effects of the present invention：
The metallic article of the present invention has coat adhesion high, and pin hole rate is low, high temperature resistant, the features such as resistance to oxidation, resistance
Rate is low, has excellent conductibility, breakdown voltage resistant height.Wherein it is possible to be resistant to more than 400 DEG C of high temperature, 200 DEG C are also can tolerate
Condition 3 hours, so as to effectively solve copper wire problem of oxidation.
Embodiment
With reference to embodiment, the present invention will be further elaborated, it should explanation, the description below merely to
The present invention is explained, its content is not defined.
Embodiment 1：
A kind of anti-oxidation metal product of the present invention, anti-oxidation metal product are bonding brass wire, the purity of copper wire >=
99.99wt%, its surface are made up of coated with the anti oxidation layer that thickness is 1nm, anti oxidation layer the component of following parts by weight：
Fuller olefinic carbon 60 .1kg, aluminium 2kg, polyethylene 8kg, polyacrylamide 11kg, carbon disulfide 1kg.
The preparation method of the anti-oxidation metal product：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed 0.5m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonded copper after annealing
Silk is immersed in the trough for filling coating liquid, causes copper wire infiltration below liquid level, to make antioxygen by the effect of surface tension of liquid
Change layer and be coated uniformly on bonding brass wire surface；
（6）150 DEG C of drying.
Embodiment 2：
A kind of anti-oxidation metal product of the present invention, anti-oxidation metal product are bonding brass wire, the purity of copper wire >=
99.99wt%, its surface are made up of coated with the anti oxidation layer that thickness is 2nm, anti oxidation layer the component of following parts by weight：
Fuller olefinic carbon 60 .5kg, aluminium 8kg, polyethylene 15kg, polyacrylamide 16kg, carbon disulfide 3kg.
The preparation method of the anti-oxidation metal product：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed 2m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonding brass wire after annealing
Immerse in the trough for filling coating liquid, by the effect of surface tension of liquid copper wire infiltration below liquid level, is made anti-oxidant
Layer is coated uniformly on bonding brass wire surface；
（6）300 DEG C of drying.
Embodiment 3：
A kind of anti-oxidation metal product of the present invention, anti-oxidation metal product are bonding brass wire, the purity of copper wire >=
99.99wt%, its surface are made up of coated with the anti oxidation layer that thickness is 1.5nm, anti oxidation layer the component of following parts by weight
's：Fuller olefinic carbon 60 .4kg, aluminium 3kg, polyethylene 9kg, polyacrylamide 12kg, carbon disulfide 2kg.
The preparation method of the anti-oxidation metal product：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed 1m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonding brass wire after annealing
Immerse in the trough for filling coating liquid, by the effect of surface tension of liquid copper wire infiltration below liquid level, is made anti-oxidant
Layer is coated uniformly on bonding brass wire surface；
（6）200 DEG C of drying.
Embodiment 4：
A kind of anti-oxidation metal product of the present invention, anti-oxidation metal product are bonding brass wire, the purity of copper wire >=
99.99wt%, its surface are made up of coated with the anti oxidation layer that thickness is 1nm, anti oxidation layer the component of following parts by weight：
Fuller olefinic carbon 60 .4kg, aluminium 7kg, polyethylene 14kg, polyacrylamide 15kg, carbon disulfide 2kg.
The preparation method of the anti-oxidation metal product：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed 2m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonding brass wire after annealing
Immerse in the trough for filling coating liquid, by the effect of surface tension of liquid copper wire infiltration below liquid level, is made anti-oxidant
Layer is coated uniformly on bonding brass wire surface；
（6）300 DEG C of drying.
Embodiment 5：
A kind of anti-oxidation metal product of the present invention, anti-oxidation metal product are bonding brass wire, the purity of copper wire >=
99.99wt%, its surface are made up of coated with the anti oxidation layer that thickness is 1nm, anti oxidation layer the component of following parts by weight：
Fuller olefinic carbon 60 .2kg, aluminium 6kg, polyethylene 12kg, polyacrylamide 14kg.
The preparation method of the anti-oxidation metal product：
（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, it
After pour into graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, will generate
Ingot dried up with pure water cooling, then with compressed air；
（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, take out true
Sky, it is warming up to after copper is completely melt, starts cast, form copper rod；
（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；
（4）The product line of wire drawing passes to annealing operation annealing；
（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strength
Stirring forms coating liquid, and afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and is covered accordingly according to diametric requirements setting
Interval velocity, speed 1m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonding brass wire after annealing
Immerse in the trough for filling coating liquid, by the effect of surface tension of liquid copper wire infiltration below liquid level, is made anti-oxidant
Layer is coated uniformly on bonding brass wire surface；
（6）150 DEG C of drying.
The performance indications and test result of the gained metallic article of embodiment 1~5 are shown in Table 1.
The performance indications of table 1. and test result
| Project | Index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Adhesion | 50cm/min, no cracking | Without cracking | Without cracking | Without cracking | Without cracking | Without cracking |
| High temperature resistant | 200 DEG C, 0.5h/ is without cracking | Without cracking | Without cracking | Without cracking | Without cracking | Without cracking |
| High temperature resistant | 200 DEG C, 3h/ is without cracking | Without cracking | Without cracking | Without cracking | Without cracking | Without cracking |
| High temperature resistant | 400 DEG C, 0.5h/ is without cracking | Without cracking | Without cracking | Without cracking | Without cracking | Without cracking |
| Resistivity | The μ Ω ﹒ cm of ＜ 1.7 | 0.5 | 0.5 | 0.4 | 0.4 | 0.3 |
| It is breakdown voltage resistant | ＞ 40V | 78 | 79 | 83 | 83 | 86 |
| Salt solution pin hole | 1/100m | 0 | 0 | 0 | 0 | 0 |
As it can be seen from table 1 the metallic article of the present invention has coat adhesion high, pin hole rate is low, high temperature resistant, oxytolerant
The features such as change, resistivity is low, has excellent conductibility, breakdown voltage resistant height.Wherein it is possible to more than 400 DEG C of high temperature is resistant to,
Also tolerable 200 DEG C of conditions 3 hours, so as to effectively solve copper wire problem of oxidation.
Although the above-mentioned embodiment to the present invention is described, not to the limit of the scope of the present invention
System, on the basis of technical scheme, those skilled in the art need not pay creative work can make it is each
Kind modification is deformed still within protection scope of the present invention.
Claims (4)
- A kind of 1. anti-oxidation metal product, it is characterised in that the anti-oxidation metal product is bonding brass wire, the copper wire it is pure Degree >=99.99wt%, coated with the anti oxidation layer that thickness is 1~2nm, the anti oxidation layer is by following parts by weight on its surface Component composition：Fuller olefinic carbon 60 .1~0.5 part, 2~8 parts of aluminium, 8~15 parts of polyethylene, 11~16 parts of polyacrylamide, curing 1~3 part of carbon.
- 2. a kind of anti-oxidation metal product according to claim 1, it is characterised in that the anti oxidation layer is by following heavy Measure the component composition of part：Fuller olefinic carbon 60 .1~0.4 part, 2~7 parts of aluminium, 8~14 parts of polyethylene, 11~15 parts of polyacrylamide, 1~2 part of carbon disulfide.
- 3. a kind of anti-oxidation metal product according to claim 1, it is characterised in that the anti oxidation layer is by following heavy Measure the component composition of part：Fuller olefinic carbon 60 .2 parts, 6 parts of aluminium, 12 parts of polyethylene, 14 parts of polyacrylamide, 2 parts of carbon disulfide.
- A kind of 4. preparation method of anti-oxidation metal product according to any one of claims 1 to 3, it is characterised in that including Step：（1）The high purity copper that purity is 99.999wt% is put into intermediate frequency furnace and carries out melting, is allowed to be melted into copper liquid, falls afterwards Enter in graphite ingot mould, keep vacuum, after being cooled down completely in stove, open gas injection valve, and open bell, by the ingot of generation Dried up with pure water cooling, then with compressed air；（2）Using vertical melting to its further melting, put it into crucible, seal afterwards, open vavuum pump, vacuumize, It is warming up to after copper is completely melt, starts cast, form copper rod；（3）The copper rod of founding is progressively drawn and attenuated on wire drawing machine, until desired diameter；（4）The product line of wire drawing passes to annealing operation annealing；（5）The fullerene of formula ratio, aluminium, polyethylene and polyacrylamide are added in the carbon disulfide of formula ratio, strong stirring Coating liquid is formed, afterwards plus opening coating liquid switch makes coating liquid slowly flow out, and corresponding coating speed is set according to diametric requirements Degree, speed is 0.5~2m/s：The anti oxidation layer of the recipe ratio is coated on bonding brass wire surface, by the bonded copper after annealing Silk is immersed in the trough for filling coating liquid, causes copper wire infiltration below liquid level, to make antioxygen by the effect of surface tension of liquid Change layer and be coated uniformly on bonding brass wire surface；（6）150~300 DEG C of drying.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108588523A (en) * | 2018-06-27 | 2018-09-28 | 湖州同光金属材料有限公司 | A kind of almag metal product of high welding performance and antioxygenic property |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106409403B (en) * | 2016-11-07 | 2018-01-02 | 南昌专腾科技有限公司 | A kind of flat enamel-covered wire and its manufacturing process |
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