CN106702243A - Low-melting-point metal and preparation method and application thereof - Google Patents
Low-melting-point metal and preparation method and application thereof Download PDFInfo
- Publication number
- CN106702243A CN106702243A CN201611117238.8A CN201611117238A CN106702243A CN 106702243 A CN106702243 A CN 106702243A CN 201611117238 A CN201611117238 A CN 201611117238A CN 106702243 A CN106702243 A CN 106702243A
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- melting
- low
- point metal
- metal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/066—Cooling mixtures; De-icing compositions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
Abstract
The invention provides low-melting-point metal and a preparation method and application thereof. The low-melting-point metal is characterized by comprising indium, tin and zinc. The mass fraction ranges of indium, tin and zinc are respectively 49-52% of indium, 45-50% of tin and 1.5-2.3% of zinc. The low-melting-point metal can be widely applied to the fields of heat conduction, electric conduction and heat dissipation needing to reduce the thermal contact resistance or resistance of spaceflight thermal control, advanced energy and information electronics.
Description
Technical field
The present invention relates to a kind of low-melting-point metal, the temperature of the low-melting-point metal metal is relatively low, can be widely used for spacecraft heat
Control, the advanced energy, information electronics etc. need to reduce heat conduction, the conductive and field of radiating of thermal contact resistance or resistance.
Background technology
Low-melting-point metal, refers to fusible metal of the fusing point less than 232 DEG C (fusing point of Sn)；Generally by B i, Sn, Pb, In etc.
Metallic element is constituted.Low-melting-point metal is often widely used as solder, and in the device such as electrical equipment, steam, fire-fighting, fire alarm
The temperature-sensitive component such as fuse, fuse, be the quite potential low-melting-point metal new material of a class.With the hair of technology
Exhibition, people are more and more finer for low temperature control aspect demand, and competence exertion is more under some specified temps for such as electronic equipment
Good characteristic, it is therefore desirable to by electronic equipment temperature control below the specified temp；Or carried out by specified temp
Metal fuses, by environment temperature control under predetermined temperature.Therefore people are to specific melting point metals, especially low-melting-point metal
There are long-term needs.
The content of the invention
Inventor of the invention considers the above-mentioned technical need of state of the art, by repetition test, proposes simultaneously
A kind of low-melting-point metal according to one aspect of the invention is prepared for, it includes indium, tin and zinc, the quality of the indium, tin and zinc
Fraction range is respectively indium 49%~52%, tin 45%~50%, zinc 1.5%~2.3%.
Low-melting-point metal of the invention, the mass fraction scope of the indium, tin and zinc be respectively indium 50%~51%,
Tin 45%~50%, zinc 1.5%~2.3%.
Low-melting-point metal of the invention, the mass fraction scope of the indium, tin and zinc be respectively indium 49%~52%,
Tin 46%~48%, zinc 1.5%~2.3%.
According to another aspect of the present invention, there is provided a kind of cycle cooling system, it includes radiator and wherein stores up
There is the cavity of the low-melting-point metal according to prepared by the present invention, the cavity is embedded in radiator base plate.
Cycle cooling system of the invention, wherein the cavity is curvilinear conduit.
Cycle cooling system of the invention, it also includes electromagnetic pump, and the electromagnetic pump is arranged on radiator and heat
On loop between source, and enter running status only after the low-melting-point metal all becomes liquid.
Cycle cooling system of the invention, it, should also containing the temperature sensor being arranged in apart from thermal source farthest
Temperature sensor sends enabling signal to start the electromagnetic pump when the temperature of low-melting-point metal is detected higher than its fusing point
Operation.
Cycle cooling system of the invention, it, should also containing the flow-sensint unit being arranged in apart from thermal source farthest
Sensor sends enabling signal to start the operation of the electromagnetic pump when the flowing of low-melting-point metal is detected.
Cycle cooling system of the invention, wherein the section of the cavity is the rectangle with chamfering, circular or ellipse
It is circular.
Cycle cooling system of the invention, wherein routine of the equivalent diameter scope in the section for 1mm~20mm
Size or the microchannel size for 0.1mm~1mm.
According to another aspect of the present invention, there is provided the method for preparing low-melting-point metal of the invention, it is included
Following steps：In the case where air conditionses are completely cut off, the metallic tin of scheduled volume is melted；Indium metal is added toward the tin of fusing, to both
Continuous heating simultaneously stirs into molten condition；Again to the metallic zinc of addition intended component in the indium tin metal of molten condition, and heat
Stirring, until metal is into molten condition；Motlten metal is maintained within the temperature range of 330~360 DEG C and 2~3h is stirred, really
All metals are protected fully to fuse；Under conditions of air is completely cut off, make motlten metal natural cooling.
Low-melting-point metal fusing point according to prepared by the present invention is 108 ± 3 DEG C.It is enclosed in by by the low-melting-point metal
Phase-change accumulation energy circulation cooling can be realized in the closed cavity of cycle cooling system.By temperature controller or detection low melting point gold
The sensor of the phase transformation situation of category, monitors the temperature or phase of low-melting-point metal to judge the heat dispersion of system, so as to adjust
The switch and watt level of electromagnetic pump power supply control the working condition of low-melting-point metal, and then control system is applied
The temperature of environment.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and it is used to explain the principle of the disclosure together with specification.
Fig. 1 show the principle knot of the embodiment using a kind of cycle cooling system of low-melting-point metal of the invention
Structure schematic diagram.
Fig. 2 show the side-looking knot of the embodiment using a kind of cycle cooling system of low-melting-point metal of the invention
Structure schematic diagram.
Description of reference numerals：1- thermals source, 2- low-melting-point metal cavitys, 3- electromagnetic pumps, 4- radiators, 5- temperature controllers,
6- radiator fans.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in implementation method do not represent all implementation methods consistent with the disclosure.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the disclosure.
The term used in the disclosure is the purpose only merely for description specific embodiment, and is not intended to be limiting and originally opens.
" one kind ", " described " and " being somebody's turn to do " of singulative used in disclosure and the accompanying claims book is also intended to include many number forms
Formula, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refer to and comprising
One or more are associated to list any or all of project may combine.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the disclosure
A little information should not necessarily be limited by these terms.These terms are only used for being distinguished from each other open same type of information.For example, not departing from
In the case of disclosure scope, first can be referred to as second, and similarly, second can also be referred to as first.Depending on linguistic context,
As used in this word " if " can be construed to " ... when " or " when ... " or " in response to determining ".
In order that those skilled in the art more fully understand the disclosure, with reference to the accompanying drawings and detailed description to this public affairs
Open and be described in further detail.
Below in conjunction with the accompanying drawings and specific embodiment further describes the present invention.
In order to obtain low-melting-point metal of the fusing point at 108 ± 3 DEG C, inventor by repetition test, using following methods most
A kind of low-melting alloy for mainly containing tin indium zinc is obtained eventually.Specific preparation process is as follows：
First, in the case where air conditionses are completely cut off, the metallic tin of scheduled volume (for example, mass fraction scope 49%~52%) is added
Heat fusing.Then, to scheduled volume (for example, mass fraction scope 45%~50%) indium metal is added in the tin of fusing, while right
Both continuous heatings simultaneously stir into molten condition.Then, to addition intended component in the indium tin metal of molten condition (for example, matter
The metallic zinc of amount fraction range 1.5%~2.3%), and heating stirring, until metal is into molten condition.Then, by motlten metal
It is maintained within the temperature range of 330~360 DEG C and stirs 2~3h, it is ensured that all metals are fully fused.Finally, in isolation air
Under conditions of, make motlten metal natural cooling, so as to obtain alloy of the fusing point near 108 ± 3 DEG C.
The scope of each metal component in these alloys is named above, these components can become within the specific limits
It is dynamic, so that the fusing point of alloy also changes in the range of above-mentioned 108 ± 3 DEG C.
The low-melting alloy can be used for various uses, be particularly suited for the environment temperature that environment temperature is unsuitable for water-cooled
In.Due to the phase-change accumulation energy characteristic higher that the alloy is embodied, therefore can apply to various be suitable for carrying out the pure storage of phase transformation
In the application of energy.Therefore, the present invention proposes a kind of low-melting-point metal phase transformation energy storage cycle cooling system.
Fig. 1 show the embodiment using a kind of phase-change accumulation energy cycle cooling system of low-melting-point metal of the invention
Theory structure schematic diagram.Fig. 2 show the implementation using a kind of cycle cooling system of low-melting-point metal of the invention
The side structure schematic view of example.As illustrated in fig. 1 and 2, cycle cooling system of the invention includes：Thermal source 1, low-melting-point metal
Cavity 2, electromagnetic pump 3, radiator 4, temperature controller 5, radiator fan 6.The low-melting-point metal cavity 2 is embedded in radiator 4
In substrate, wherein low-melting-point metal of the filling fusing point for 108 ± 3 DEG C.The track of the low-melting-point metal cavity 2 is arbitrary shape
Closed curve, and integral sealing forms flow pipe of the low-melting-point metal under liquid phase state.
The low-melting-point metal keeps its solid state, and rise in environment temperature when environment temperature is less than its fusing point
When, absorb the heat in environment so that environment temperature is kept for no more its fusing point.In the situation of environment temperature not acute variation
Under, can prevent environment temperature only by the phase-change thermal storage ability of a certain amount of low-melting-point metal being contained in cavity 2
Rising.
The electromagnetic pump 3 is arranged on the liquid metal runner pipe road 2 between thermal source 1 and radiator 4 on the substrate of radiator 4,
For driving the liquid metal in cavity 2 when operation is energized.So as to when environment temperature is ramping up, by liquid metal
Quick heat exchange characteristics absorb the heat produced at thermal source rapidly, and the rapid heat that will be absorbed is transmitted at radiator 4
To radiator 4, so as to the discharge of acceleration environment heat, so as to reduce environment temperature.
Therefore, temperature sensor 5 or flow or viscosity detector 5 are provided with the cooling system, to sense chamber
Whether metal has been completely in liquid phase in body 2.The sensor 5 or detector 5 are generally arranged in circulation duct 2 apart from thermal source
1 farthest position, and in the temperature for detecting the low-melting-point metal at the position higher than low at its fusing point or the position
When the viscosity of melting point metals is less than its flowable viscosity, enabling signal is sent to electromagnetic pump 3 so that electromagnetic pump enters operation
State.Temperature or flow or sticky that the temperature sensor 5 or flow or viscosity detector 5 are arrived always according to real-time detection
Degree, adjusts the applying size of current of the electromagnetic pump 3, so as to control its running status.For example, temperature sensor 5 passes through
Monitor the temperature of low-melting-point metal to judge the heat dispersion of system, so that the switch and power that adjust electromagnetic pump power supply are big
The small working condition to control low-melting-point metal, so control system temperature.
Energization is needed in flow process due to low-melting-point metal, therefore in order to prevent electric leakage, it is necessary to the low melting point is golden
Category cavity or the inwall of pipeline 2 coat one layer of insulating materials.The low-melting-point metal cavity or pipeline 2 material of itself can be gold
Category.The section of the low-melting-point metal cavity or pipeline 2 is the rectangle with chamfering, circular or ellipse.The section work as
Amount diameter range is the stock size or the microchannel size for 0.1mm-1mm of 1mm-20mm.According to the applied field of cooling system
Close different, for example, needing the occasion of high-power heat-dissipation, the equivalent diameter in the section of the low-melting-point metal cavity or pipeline 2 can
It is 15mm, 20mm.In some small application scenarios, such as chip cooling field, the low-melting-point metal cavity or pipeline 2
Section be circular or oval, the equivalent diameter in its section is 0.1mm, 0.5mm, 1mm.
The radiator 4 is made up of substrate, radiating fin and radiator fan 6 successively from top to bottom.The radiating fin cloth
On full whole radiator base plate.The radiating fin is arranged in the sphere of action of the radiator fan 6, in other words, radiating fin
Piece faces the air outlet of radiator fan 6.
Use low-melting-point metal of the invention to be used as heat transfer medium by the cooling system of said structure, using
When, when thermal source caloric value is smaller or during relatively low environment temperature, when fever time is shorter, low-melting-point metal is from thermal source or in environment
The shortage of heat of absorption is so that its thawing, temperature sensor detects the fusing point of temperature not up to low-melting-point metal, so that will not
Trigger it and send enabling signal to electromagnetic pump, therefore battery pump is in power-off off position, now, meets low-power thermal source
Radiating.When the increase of thermal source caloric value, when fever time extends, it is to undergo phase transition that low-melting-point metal absorbs enough heats, is changed into
Solidliquid mixture or liquid, temperature controller detect that temperature reaches the fusing point of low-melting-point metal, i.e., be powered to electromagnetic pump, electromagnetism
Pump is in running order, now, meets the radiating of high power thermal source.
According to low-melting-point metal of the present invention, have the following advantages that：Fusing point is made for 108 ± 3 DEG C of low-melting-point metal
It is that phase-change thermal storage and heat sink material are used, its latent heat of phase change is big, thermal conductivity factor is high, applies in the system of short time work, can
To substantially reduce the temperature shock of heater members, at the same can make cooling system volume reduce, lower power consumption.
When low-melting-point metal of the invention is applied in cycle cooling system, when system heat generation amount is larger, adstante febre
Between it is more long when, low-melting-point metal heat absorption is changed into liquid, and so as to being radiated by circulating, system radiating ability is greatly improved.
Specific description of embodiments of the present invention above, and just to helping understand inventive concept of the invention, this is simultaneously
Do not mean that all applications of the invention can only be confined to these specific specific embodiments.Those skilled in the art should manage
Solve, above-described specific embodiment, simply some examples in various preferred embodiments.It is any to embody right of the present invention
It is required that specific embodiment, all should be within the scope of the claims in the present invention be claimed.Those skilled in the art's energy
It is enough technical scheme described in each specific embodiment above to be modified or which part technical characteristic is carried out etc.
With replacement.All any modification, equivalent or improvement made within spirit and principles of the present invention etc., should be included in
Within the protection domain of the claims in the present invention.
The general principle of the disclosure is described above in association with specific embodiment, however, it is desirable to, it is noted that above-mentioned specific reality
Mode is applied, the limitation to disclosure protection domain is not constituted.Those skilled in the art want it is to be understood that depending on design
Summation other factors, can occur various modifications, combination, sub-portfolio and replacement.Any spiritual and original in the disclosure
Modification, equivalent and improvement for being made within then etc., should be included within disclosure protection domain.
Claims (9)
1. a kind of low-melting-point metal, it includes indium, tin and zinc, and the mass fraction scope of the indium, tin and zinc is respectively indium 49%
~52%, tin 45%~50%, zinc 1.5%~2.3%.
2. a kind of cycle cooling system, it includes radiator and wherein stores low melting point gold according to claim 1
The cavity of category, the cavity is embedded in radiator base plate.
3. cycle cooling system according to claim 2, wherein the cavity is curvilinear conduit.
4. cycle cooling system according to claim 3, it also includes electromagnetic pump, and the electromagnetic pump is arranged on radiator
On loop and thermal source between, and enter running status only after the low-melting-point metal all becomes liquid.
5. cycle cooling system according to claim 4, its also containing arrangement apart from thermal source farthest temperature sensor,
The temperature sensor sends enabling signal to start the electromagnetism when the temperature of low-melting-point metal is detected higher than its fusing point
The operation of pump.
6. cycle cooling system according to claim 4, wherein the flowing also containing arrangement apart from thermal source farthest is sensed
Device, the sensor sends enabling signal to start the operation of the electromagnetic pump when the flowing of low-melting-point metal is detected.
7. the cycle cooling system according to claim any one of 2-6, wherein the section of the cavity is the length with chamfering
Square, circular or ellipse.
8. cycle cooling system according to claim 7, wherein the equivalent diameter scope in the section is 1mm~20mm's
Stock size or the microchannel size for 0.1mm~1mm.
9. a kind of preparation method of low-melting-point metal as claimed in claim 1, it is comprised the steps of：
In the case where air conditionses are completely cut off, the metallic tin of scheduled volume is melted；
Indium metal is added toward the tin of fusing, to both continuous heatings and molten condition is stirred into；
Again to the metallic zinc that intended component is added in the indium tin metal of molten condition, and heating stirring, until metal is into molten
State；
Motlten metal is maintained within the temperature range of 330~360 DEG C and 2~3h is stirred, it is ensured that all metals are fully fused；
Under conditions of air is completely cut off, make motlten metal natural cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117238.8A CN106702243A (en) | 2016-12-07 | 2016-12-07 | Low-melting-point metal and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117238.8A CN106702243A (en) | 2016-12-07 | 2016-12-07 | Low-melting-point metal and preparation method and application thereof |
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| CN106702243A true CN106702243A (en) | 2017-05-24 |
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| CN201611117238.8A Pending CN106702243A (en) | 2016-12-07 | 2016-12-07 | Low-melting-point metal and preparation method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742060A (en) * | 2019-01-18 | 2019-05-10 | 天津城建大学 | A kind of phase change radiator structure combining low-melting alloy |
| CN114752363A (en) * | 2022-05-07 | 2022-07-15 | 中国科学院过程工程研究所 | Application method of high-thermal-conductivity composite thermal interface material |
| CN114990381A (en) * | 2021-03-01 | 2022-09-02 | 北京理工大学 | Low-melting-point alloy for safe ammunition slow-release structure and preparation method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742060A (en) * | 2019-01-18 | 2019-05-10 | 天津城建大学 | A kind of phase change radiator structure combining low-melting alloy |
| CN114990381A (en) * | 2021-03-01 | 2022-09-02 | 北京理工大学 | Low-melting-point alloy for safe ammunition slow-release structure and preparation method and application thereof |
| CN114752363A (en) * | 2022-05-07 | 2022-07-15 | 中国科学院过程工程研究所 | Application method of high-thermal-conductivity composite thermal interface material |
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