CN107502771A - A kind of preparation method of nano-TiC particle reinforced aluminum matrix composites - Google Patents
A kind of preparation method of nano-TiC particle reinforced aluminum matrix composites Download PDFInfo
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- CN107502771A CN107502771A CN201710568291.8A CN201710568291A CN107502771A CN 107502771 A CN107502771 A CN 107502771A CN 201710568291 A CN201710568291 A CN 201710568291A CN 107502771 A CN107502771 A CN 107502771A
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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Abstract
The present invention discloses a kind of preparation method of nano-TiC particle reinforced aluminum matrix composites.Using combustion synthesis method and conventional casting technologies, nano-TiC particle reinforced aluminum matrix composites are prepared, the wherein size of TiC particles is 50 ~ 100nm, and content is 0.5 ~ 3wt.%.Processing step is as follows：（1）Nano-diamond powder, Al powder and Ti powder are subjected to high-energy ball milling, prefabricated section is cold-pressed into after mixing；（2）Prefabricated section carries out combustion reaction, obtains the intermediate alloy containing nano-TiC particle；（3）Intermediate alloy is dissolved in aluminum melt, refining, degasification, cast after mechanical agitation, you can obtains nano-TiC particle reinforced aluminum matrix composites.Nano-TiC particle is subsphaeroidal in prepared composite, is evenly distributed, good with aluminum substrate interface cohesion, excellent in mechanical performance.Flow of the present invention is short, cost is low, easy to operate, suitable for industrial-scale production.
Description
Technical field
The present invention relates to the preparation field of aluminum matrix composite, more particularly to a kind of TiC particle enhanced aluminum-based composite materials
Preparation method.
Background technology
Particle enhanced aluminum-based composite material because of high-strength light, heat-resistant antifriction and mechanical property isotropism, Aero-Space,
The fields such as communications and transportation, Electronic Packaging are widely used.In numerous ceramics enhancing particles, TiC has high intensity, high-modulus, Gao Rong
Put and soak the advantages that good with aluminum substrate, be aluminium and its preferable hardening constituent of alloy；In addition, TiC and aluminium are face-centered cubic
Structure, lattice constant approach, and can be used as the heterogeneous forming core core of aluminum melt, and notable refining grain size.It is well known that enhancing
Particle size is down to nanoscale, then the intensity of metal-base composites and plasticity, which have, largely improves, therefore nano-TiC particle
Reinforced aluminum matrix composites turn into one of current research focus.
At present, mainly there are two kinds of sides for the existing more report of research of TiC particle enhanced aluminum-based composite materials both at home and abroad
Method, i.e., outer addition and in-situ method.Chinese patent 201610834570.X is pre-processed by tabletting TiC particles being introduced directly into aluminium
Liquid, ultrasonic disperse is then carried out, obtain TiC/Al-Cu composites.Chinese patent 201510605404.8 is by TiC, Ti and C powder
Prefabricated section dissolve in aluminium liquid, react 30min in 850 DEG C of temperatures above, the particle reinforced aluminium-based composite woods of the double yardstick TiC of micro-nano be made
Material.Yang Bing et al.（Materials Science and Engineering A, 2011,528（18）：5649-5655）
Al-Ti-C powder compacts are added to 900 DEG C of aluminium alloy melt, obtain TiC/7075 composites.From the point of view of industrialization angle,
Above method still suffers from following deficiency：（1）The ultrasonic melt zone of action is limited, and operation and maintenance is costly；（2）Interior life
TiC particle size spans are larger, wherein a small amount of nano-TiC particle is due to very big specific surface area, it is easy to reunite；（3）For a long time
Under the conditions of pyroreaction, there is the problems such as air-breathing, oxidation, alloying element scaling loss in aluminium liquid.Therefore, on original smelting equipment basis
On, how efficiently, environmental protection, low cost prepare nano TiC reinforced aluminum matrix composites to promote its commercial application to close weight
Will.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of nano-TiC particle to strengthen aluminum-base composite material
The preparation method of material.The technological operation is simple, inexpensive, pollution-free and be suitable to large-scale industrial production.
Technical scheme provided by the invention is：
A kind of preparation method of nano-TiC particle reinforced aluminum matrix composites, using combustion synthesis method and conventional casting technologies, system
Standby nano-TiC particle reinforced aluminum matrix composites, the wherein size of TiC particles is 50 ~ 100nm, and content is 0.5 ~ 3wt.%.Tool
Body technology step is as follows：
（1）Nano-diamond powder, Al powder and Ti powder are subjected to high-energy ball milling, prefabricated section is cold-pressed into after mixing；
（2）Prefabricated section carries out combustion reaction, obtains the intermediate alloy containing nano-TiC particle；
（3）Intermediate alloy is dissolved in aluminum melt, refining, degasification, cast after mechanical agitation, you can is obtained nano-TiC particle and is increased
Strong aluminum matrix composite.
Wherein step（1）The composition proportion of middle prefabricated section is：Aluminium powder mass percent is 60 ~ 80%, bortz powder：Titanium valve
Atomic ratio=1:1~1:0.7, bortz powder average-size is 100nm, and Al powder average-size is at 50 ~ 100 μm, Ti powder average-sizes
At 20 ~ 50 μm.
Wherein step（1）Middle milling parameters are：Ratio of grinding media to material 5:1~20:1,300 ~ 800rpm of rotating speed, Ball-milling Time 6 ~
24h；
Wherein step（1）The density of middle cold pressing prefabricated section is the 40 ~ 60% of mixed powder solid density.
Wherein step（2）The combustion reaction of middle prefabricated section is carried out in atmosphere, and mode of igniting is laser, tungsten filament, plasma
One kind in beam or Efco-Northrup furnace.
Wherein step（3）Middle aluminium is that fine aluminium, the casting alloy such as Al-Si, Al-Cu or 1 system ~ 7 are wrought aluminium alloy, melt temperature
Spend for 720 ~ 800 DEG C.
Wherein step（3）Middle mechanical agitation selects graphite rotator, and rotating speed is 100 ~ 400rpm, 5 ~ 15min of time, with after-blow
Argon gas refining, 2 ~ 5min of degasification.
It is of the invention to be had the characteristics that compared with current existing technology：1）Using nano-diamond powder as carbon source, combustion
Burn nano-TiC particle regular shape in product, size uniformity；2）Intermediate alloy can dissolve in conventional smelting temperature, technique letter
It is single；3）Nano-TiC particle surface is pure, is uniformly dispersed in aluminum melt, and interface bond strength is high.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of intermediate alloy in embodiment 1.
Fig. 2 is the energy spectrogram of the enhancing particle of intermediate alloy in embodiment 1.
Fig. 3 is the low power stereoscan photograph of nano-TiC particle enhancing 6061Al composites in embodiment 1.
Fig. 4 is the high power stereoscan photograph of nano-TiC particle enhancing 6061Al composites in embodiment 1.
Fig. 5 is the low power stereoscan photograph of nano-TiC particle enhancing 2024Al composites in embodiment 2.
Fig. 6 is the transmission electron microscope photo of nano-TiC particle enhancing 2024Al composites in embodiment 2.
Embodiment
Embodiment 1
The preparation method of 3wt.%TiC/6061Al nano composite materials, step are as follows：
（1）Nano-diamond powder is matched in proportion（100nm）, Al powder（50μm）With Ti powder（20μm）, wherein bortz powder：Titanium valve
Atomic ratio=1:0.8, aluminium powder mass percent is 70%；By powder on planetary ball mill with ratio of grinding media to material 10:1, rotating speed
500rpm mixing 12h；Appropriate mixing powder is taken, is pressed into base at room temperature, its density is the 50% of mixed powder solid density；
（2）Prefabricated section uses laser-induced combustion in atmosphere, and the intermediate alloy containing nano TiC is obtained after product cooling；Fig. 1 is provided
Scanning electron microscope (SEM) photograph, TiC grain shape roundings in intermediate alloy are found, size uniformity, concentrate on 50 ~ 100nm；Fig. 2 is enhancing
The energy spectrum diagram of particle, it was demonstrated that subsphaeroidal particle corresponds to TiC, and purity is high, free from admixture；
（3）6061Al ingot castings are placed in graphite crucible, 750 DEG C are heated in well formula resistance furnace；By TiC：Al mass ratio=3:
100 calculate intermediate alloy used, the intermediate alloy of weighing are dissolved in into aluminium liquid, while use graphite rotator to be stirred with rotating speed 300rpm
Dynamic 10min, subsequent blowing argon gas refining, degasification 3min；It is disposed, by materials cast with composite paste to the swage for preheating 200 DEG C, that is, obtains
Obtain 3wt.%TiC/6061Al nano composite materials；Different multiples scanning electron microscopic observation result（Fig. 3 and Fig. 4）Show, nano TiC
Particle dispersion is distributed in aluminum substrate, is predominantly located at transgranular and good with aluminum substrate interface cohesion.
Embodiment 2
The preparation method of 0.5wt.%TiC/2024Al nano composite materials, step are as follows：
（1）Nano-diamond powder is matched in proportion（100nm）, Al powder（100μm）With Ti powder（20μm）, wherein bortz powder：Titanium
Powder atomic ratio=1:0.8, aluminium powder mass percent is 80%；By powder on planetary ball mill with ratio of grinding media to material 15:1, rotating speed
400rpm mixing 24h；Appropriate mixing powder is taken, is pressed into base at room temperature, its density is the 50% of mixed powder solid density；
（2）Prefabricated section is ignited using coreless induction furnace in atmosphere, and the intermediate alloy containing nano TiC is obtained after product cooling；
（3）2024Al ingot castings are placed in graphite crucible, 780 DEG C are heated in well formula resistance furnace；By TiC：Al mass ratio=1:
200 calculate intermediate alloy used, the intermediate alloy of weighing are dissolved in into aluminium liquid, while use graphite rotator to be stirred with rotating speed 200rpm
Dynamic 5min, subsequent blowing argon gas refining, degasification 5min；It is disposed, by materials cast with composite paste to the swage for preheating 200 DEG C, that is, obtains
Obtain 0.5wt.%TiC/2024Al nano composite materials；ESEM（Fig. 5）And transmission electron microscope（Fig. 6）Observation indicate that nanometer
TiC particle dispersions are distributed in aluminum substrate, and good with aluminum substrate interface cohesion.
Claims (7)
1. a kind of preparation method of nano-TiC particle reinforced aluminum matrix composites, it is characterised in that as follows using step：
（1）Nano-diamond powder, Al powder and Ti powder are subjected to high-energy ball milling, prefabricated section is cold-pressed into after mixing；
（2）Prefabricated section carries out combustion reaction, obtains the intermediate alloy containing nano-TiC particle；
（3）Intermediate alloy is dissolved in aluminum melt, refining, degasification, cast after mechanical agitation, you can is obtained nano-TiC particle and is increased
Strong aluminum matrix composite;Wherein the size of TiC particles is 50 ~ 100nm, and content is 0.5 ~ 3wt.%.
A kind of 2. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（1）The composition proportion of middle prefabricated section is：Aluminium powder mass percent is 60 ~ 80%, bortz powder：Titanium valve atomic ratio=1:1~1:
0.7, bortz powder average-size is 100nm, and Al powder average-size is at 50 ~ 100 μm, and Ti powder average-size is at 20 ~ 50 μm.
A kind of 3. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（1）Middle milling parameters are：Ratio of grinding media to material 5:1~20:1,300 ~ 800rpm of rotating speed, 6 ~ 24h of Ball-milling Time.
A kind of 4. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（1）The density of middle cold pressing prefabricated section is the 40 ~ 60% of mixed powder solid density.
A kind of 5. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（2）The combustion reaction of middle prefabricated section is carried out in atmosphere, and mode of igniting is laser, tungsten filament, beam-plasma or high-frequency induction
One kind in stove.
A kind of 6. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（3）Middle aluminium is fine aluminium or Al-Si casting alloys or Al-Cu casting alloys or 1 system ~ 7 are wrought aluminium alloy, and melt temperature is
720~800℃。
A kind of 7. preparation method of nano-TiC particle reinforced aluminum matrix composites according to claim 1, it is characterised in that
Step（3）Middle mechanical agitation selects graphite rotator, and rotating speed is 100 ~ 400rpm, 5 ~ 15min of the time, subsequent blowing argon gas refining, is removed
2 ~ 5min of gas.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342605A (en) * | 2018-01-15 | 2018-07-31 | 江苏理工学院 | A kind of TiC particles enhance the preparation method of 7085 aluminum matrix composites |
| CN109182802A (en) * | 2018-11-12 | 2019-01-11 | 华北电力大学（保定） | A kind of carbon material enhancing copper/aluminum matrix composite preparation method |
| CN113416861A (en) * | 2021-05-17 | 2021-09-21 | 江苏大学 | Preparation method of micro-nano dual-scale TiC particle reinforced aluminum matrix composite material |
| CN115612913A (en) * | 2022-10-20 | 2023-01-17 | 桂林理工大学 | TiO2 2 Preparation method of nanoparticle reinforced hot-rolled steel bar |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291450A (en) * | 2006-04-25 | 2007-11-08 | Isuzu Motors Ltd | Particle-reinforced aluminum alloy composite, and production method therefor |
| CN102260814A (en) * | 2011-07-26 | 2011-11-30 | 吉林大学 | In situ nano TiC ceramic particle reinforced aluminum based composite material and preparation method thereof |
| CN104532068A (en) * | 2014-12-15 | 2015-04-22 | 河海大学 | Nano TiC ceramic particle reinforced aluminum matrix composite and preparation method thereof |
-
2017
- 2017-07-13 CN CN201710568291.8A patent/CN107502771A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291450A (en) * | 2006-04-25 | 2007-11-08 | Isuzu Motors Ltd | Particle-reinforced aluminum alloy composite, and production method therefor |
| CN102260814A (en) * | 2011-07-26 | 2011-11-30 | 吉林大学 | In situ nano TiC ceramic particle reinforced aluminum based composite material and preparation method thereof |
| CN104532068A (en) * | 2014-12-15 | 2015-04-22 | 河海大学 | Nano TiC ceramic particle reinforced aluminum matrix composite and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342605A (en) * | 2018-01-15 | 2018-07-31 | 江苏理工学院 | A kind of TiC particles enhance the preparation method of 7085 aluminum matrix composites |
| CN109182802A (en) * | 2018-11-12 | 2019-01-11 | 华北电力大学（保定） | A kind of carbon material enhancing copper/aluminum matrix composite preparation method |
| CN113416861A (en) * | 2021-05-17 | 2021-09-21 | 江苏大学 | Preparation method of micro-nano dual-scale TiC particle reinforced aluminum matrix composite material |
| CN115612913A (en) * | 2022-10-20 | 2023-01-17 | 桂林理工大学 | TiO2 2 Preparation method of nanoparticle reinforced hot-rolled steel bar |
| CN115612913B (en) * | 2022-10-20 | 2023-11-21 | 桂林理工大学 | TiO (titanium dioxide) 2 Preparation method of nanoparticle reinforced hot rolled steel bar |
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Application publication date: 20171222 |