CN103627936A - Carbon fiber reinforced magnesium base composite material for brake disc and preparation method of composite material - Google Patents
Carbon fiber reinforced magnesium base composite material for brake disc and preparation method of composite material Download PDFInfo
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- CN103627936A CN103627936A CN201310592965.XA CN201310592965A CN103627936A CN 103627936 A CN103627936 A CN 103627936A CN 201310592965 A CN201310592965 A CN 201310592965A CN 103627936 A CN103627936 A CN 103627936A
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Abstract
The invention relates to a magnesium alloy brake disc, and in particular relates to a carbon fiber reinforced magnesium base composite material for the brake disc and a preparation method of the composite material. The carbon fiber reinforced magnesium base composite material for the brake disc is prepared by taking a magnesium-aluminum-zinc-manganese series magnesium base alloy as a matrix and micro-nano scale carbon fibers as a reinforcing phase of the magnesium alloy matrix, and carrying out a melt synthesis-compression molding method. Compared with the prior art, through carbon fiber reinforcement, the fatigue resistance and wear resistance of the magnesium base alloy material are improved, and the material is high in friction factor, good in braking effect and long in service life and can be applied to brake discs of various motor vehicles.
Description
Technical field
The present invention relates to magnesium alloy brake flange, particularly carbon fiber reinforced magnesium-base composite material and preparation method for a kind of brake flange.
Background technology
Current, brake flange material be take cast iron (steel) material as main, the drawback of cast iron brake flange maximum is that heat radiation is slow, when braking or braking for a long time, easily cause brake flange excess Temperature under fast state, and then cause frictional force to reduce and cause brake to be lost efficacy, therefore for high-speed rail transportation instrument, need to adopt the brake flange of light alloy material as the brake flange of lightweight automobile, light rail etc.; In light alloy, the magnesium alloy intensity that compares is the highest, when specific rigidity approaches aluminium alloy and steel, particularly magnesium alloy and is hit load, absorbs energy Ratios aluminium alloy high by approximately 50%, has good antidetonation noise abatement performance; As braking disc, the brake flange of magnesium alloy material is than four times of left and right of the rapid heat dissipation of cast iron brake disk, can effectively reduce the frictional heat accumulation producing because of braking procedure, can greatly improve the hot braking ability of automobile, shorten braking distance, extend the brake flange life-span, the brake flange of the brake flange weight ratio cast iron quality of magnesium alloy can alleviate more than 70%, solve the problems such as existing cast iron brake disk wears no resistance, radiating effect is bad, quality is large, the heat fade of frictional force high temperature, become the renewal product of cast iron brake disk.
But magnesium alloy is made brake flange material and is also had weak point, is mainly reflected in: 1) corrosion resistance aspect is poorer than aluminium alloy; 2) brake flange of magnesium alloy material still has much room for improvement at aspects such as intensity, hardness, wear resistance, antifatigues; In prior art, to improving the corrosion resistance aspect of magnesium alloy, take and add some erosion-resisting element as main, but adding of these elements can affect the raising of many-sided performances such as magnesium alloy strength, antifatigue; For intensity, hardness and the wear resistance aspect of improving magnesium alloy, take at present and add wild phase particle to prepare particle reinforced magnesium base compound material as main, at present, particle reinforced magnesium base compound material is because Particle Phase volume fraction is large for the outstanding problem of braking disc, dispersing uniformity is poor, causes the stability of the performances such as intensity, wear resistance and antifatigue of material to need to improve, moreover, particulates reinforcements is generally oxide compound or ceramic phase particles, can reduce the heat conductivility of brake flange.
In sum, for Magnuminium as braking disc material, need to improve erosion resistance, thermal conductivity, improve the performance of the aspect such as intensity, hardness, wear resistance, antifatigue of magnesium alloy materials simultaneously, this need to introduce new compound phase on the basis of Magnuminium, invents a kind of novel Magnuminium matrix material.
Summary of the invention
The object of this invention is to provide carbon fiber reinforced magnesium-base composite material and preparation method for a kind of brake flange, by on Magnuminium basis, introduce carbon fiber-reinforced phase, improve the erosion resistance of Magnuminium, and when improving the performances such as magnesium base alloy material intensity, hardness, wear resistance, antifatigue, improve the heat conductivility of material, solve the key issue that current Magnuminium exists as braking disc.
The object of the invention is to realize by following scheme:
A kind of brake flange carbon fiber reinforced magnesium-base composite material, it is characterized in that: described brake flange carbon fiber reinforced magnesium-base composite material is that employing magnesium-aluminum-zinc-manganese is that Magnuminium is as matrix, using other carbon fiber of micro/nano level as the wild phase of magnesium-base alloy material, and the method by synthesize-die cast of melt is prepared from.
Particularly:
1) magnesium matrix alloying constituent used is calculated as according to mass percent: aluminium (Al) 8.0-9.0, zinc (Zn) 0.50-0.90, manganese (Mn) 0.20-0.40, copper (Cu) 0.001-0.025, nickel (Ni) 0-0.001, iron (Fe) 0-0.004, surplus is magnesium (Mg).
2) scale feature of other carbon fiber of micro/nano level used is, diameter is in the scope of 1-100nm, and the ratio of staple length and Fibre diameter is within the scope of 1-100.
3) micro-nano carbon fiber add-on is that magnesium-aluminum-zinc-manganese is the 0.3-3% of Magnuminium quality.
Brake flange of the present invention divides following steps by the preparation process feature of carbon fiber reinforced magnesium-base composite material:
A, carbon fiber fully mix with magnesium powder, at vacuum lower lock block, the magnesium matrix body of preparing carbon fiber-containing, it is to be noted when preparing the magnesium matrix body of carbon fiber-containing, carbon fiber and metal magnesium powder are in mass ratio in the scope of 1:10-1:2, the needed vacuum tightness of briquetting requires gaseous tension to be no more than 0.01Pa, and the needed pressure of briquetting is 4 * 10
3kg/m
2, the briquetting making is of a size of 2 * 2 * 2 cm
3-4 * 4 * 4cm
3;
The melting of b, magnesium matrix alloy, adjusts aluminium, zinc, manganese, copper, iron, nickel composition to specialized range;
The temperature of c, magnesium matrix alloy is controlled at 600 ℃-650 ℃, adds the magnesium matrix body block of carbon fiber-containing, adopts non-contact type induction stirring, and die cast after fusing evenly, obtains brake flange carbon fiber reinforced magnesium-base composite material of the present invention.
The present invention compared with prior art, has the following advantages:
1) brake flange of the present invention is compared with the brake flange of cast iron (steel) material with carbon fiber reinforced magnesium-base composite material, and weight saving 70-80%, realizes lightweight; Meanwhile, carbon fiber reinforced magnesium base composite material heat conductivility improves, and frictional coefficient improves, and shortens braking distance, extends brake flange work-ing life.
2) the present invention compares with the aluminum alloy material brake flange using on current lightweight automobile, not only quality is lighter, and more guaranteed aspect intensity, hardness, wear resistance, particularly improved the impulse fatigue resistance energy of brake flange, to vibration-damping noise-reducing, improve and all benefit work-ing life.
3) the present invention compares with the brake flange that existing particle strengthens light metal-based composite material quality, significantly reduced the ratio of wild phase, overcome the problem that a large amount of particles exist the reunion that causes to cause, simultaneously, carbon fiber is compared with particulates reinforcements, because particulates reinforcements belongs to ceramic phase, the frictional coefficient of impact heat radiation and material, and carbon fiber wild phase of the present invention, there is the matrix material of improvement thermal conductivity, can improve the radiating effect of brake flange, the heat radiation of assurance brake process, thereby guarantee the stable of braking quality, shorten braking distance, avoid the Problem of Failure of braking.
Therefore, the present invention compared with prior art, by carbon fiber, strengthen, erosion resistance, the thermal conductivity of material have been improved, for the strength of materials, hardness, fatigue performance and abrasion resistance properties, also have clear improvement simultaneously, braking effect is good, long service life, can be applicable to the brake flange of various Motor vehicles.
Embodiment
embodiment 1
1) chemical composition (quality %) of the magnesium matrix alloy adopting is:
Aluminium 8.0, zinc 0.50, manganese 0.40, copper 0.01, nickel 0.001, iron 0.002, surplus is magnesium 91.087;
2) scale feature of carbon fiber used is, diameter is in the scope of 1-10nm, and the ratio of staple length and Fibre diameter is within the scope of 1-100; The add-on of micro-nano carbon fiber is 0.3%;
Implementation step is:
A, carbon fiber and the metal magnesium powder in mass ratio ratio of 1:9 fully mix, and briquetting in vacuum briquetting press is prepared into the magnesium matrix body of carbon fiber-containing; During briquetting, vacuum tightness is 0.01Pa, and pressure during briquetting is 4 * 10
3kg/m
2, the briquetting making is of a size of 4 * 4 * 4cm
3;
The melting of b, magnesium matrix alloy, adjusts aluminium, zinc, manganese, copper component to prescribed value, and chemical compositions by percentage is: aluminium 8.0, and zinc 0.50, manganese 0.40, copper 0.01, nickel 0.001, iron 0.002, surplus is magnesium 91.087;
The temperature of c, magnesium matrix alloy is controlled at 610 ℃, the magnesium matrix body that adds carbon fiber-containing, the add-on of magnesium matrix body is 3% of Magnuminium melt quality mark, adopt induction stirring 2min, fusing evenly can be cast, and die cast obtains brake flange carbon fiber reinforced magnesium-base composite material of the present invention.
embodiment 2
1) chemical composition (quality %) of the magnesium matrix alloy adopting is:
Aluminium 9.0, zinc 0.90, manganese 0.20, copper 0.025, iron 0.001, surplus is magnesium 89.874;
2) scale feature of carbon fiber used is, diameter is in the scope of 1-100nm, and the ratio of staple length and Fibre diameter is within the scope of 1-100; The add-on of micro-nano carbon fiber is 3%;
Implementation step is:
A, carbon fiber and the metal magnesium powder in mass ratio ratio of 3:7 fully mix, and briquetting in vacuum briquetting press is prepared into the magnesium matrix body of carbon fiber-containing; During briquetting, vacuum tightness is 0.01Pa, and pressure during briquetting is 4 * 10
3kg/m
2, the briquetting making is of a size of 3 * 3 * 3cm
3;
The melting of b, magnesium matrix alloy, adjusts aluminium, zinc, manganese, copper component to prescribed value, and chemical compositions by percentage is: aluminium 9.0, and zinc 0.90, manganese 0.20, copper 0.025, iron 0.001, surplus is magnesium 89.874;
The temperature of c, magnesium matrix alloy is controlled at 650 ℃, the magnesium matrix body that adds carbon fiber-containing, the add-on of magnesium matrix body is 10% of Magnuminium melt quality mark, adopt induction stirring 5min, fusing evenly can be cast, and die cast obtains brake flange carbon fiber reinforced magnesium-base composite material of the present invention.
embodiment 3
1) chemical composition (quality %) of the magnesium matrix alloy adopting is:
Aluminium 8.5, zinc 0.70, manganese 0.30, copper 0.010, iron 0.0005, surplus is magnesium 90.4895;
2) scale feature of carbon fiber used is, diameter is in the scope of 1-100nm, and the ratio of staple length and Fibre diameter is within the scope of 1-100; The add-on of micro-nano carbon fiber is 1.5%;
Implementation step is:
A, carbon fiber and the metal magnesium powder in mass ratio ratio of 3:7 fully mix, and briquetting in vacuum briquetting press is prepared into the magnesium matrix body of carbon fiber-containing; During briquetting, vacuum tightness is 0.01Pa, and pressure during briquetting is 4 * 10
3kg/m
2, the briquetting making is of a size of 2 * 2 * 2cm
3;
The melting of b, magnesium matrix alloy, adjusts aluminium, zinc, manganese, copper component to prescribed value, and chemical compositions by percentage is: aluminium 8.5, and zinc 0.70, manganese 0.30, copper 0.010, iron 0.0005, surplus is magnesium 90.4895;
The temperature of c, magnesium matrix alloy is controlled at 630 ℃, the magnesium matrix body that adds carbon fiber-containing, the add-on of magnesium matrix body is 5% of Magnuminium melt quality mark, adopt induction stirring 3min, fusing evenly can be cast, and die cast obtains brake flange carbon fiber reinforced magnesium-base composite material of the present invention.
Carbon fiber reinforced magnesium-base composite material prepared by embodiment 1-3 carries out Mechanical Property Analysis, and under the identical state of other conditionally completes with contrasting (comparative example 1) with material property prepared by high-silicon aluminium-silicon alloy material in prior art, the composition of the high-silicon aluminium-silicon alloy that comparative example adopts is: silicon 17-35%, copper 1-3%, magnesium 0.3-2%, nickel or chromium 1-2%, and surplus is aluminium; Simultaneously by the alloy in above-mentioned three embodiment, in the situation that not adding carbon fiber, (comparative example 2-4) also as a comparison case, the alloying constituent that comparative example 1-4 adopts is in Table 1
The alloying constituent of table 1 comparative example (quality %)
| ? | Aluminium | Copper | Silicon | Iron | Zinc | Nickel | Tin | Magnesium |
| Comparative example 1 | Surplus | 2 | 30 | ? | - | 1.5 | - | 1 |
| Comparative example 2 | 8.0 | 0.01 | - | 0.002 | 0.50 | 0.001 | - | Surplus |
| Comparative example 3 | 9.0 | 0.025 | - | 0.001 | 0.90 | - | - | Surplus |
| Comparative example 4 | 8.5 | 0.010 | - | 0.0005 | 0.70 | - | - | Surplus |
Note: "-" represents no this item.
The performance of brake flange material prepared by embodiments of the invention and the comparative result of comparative example are in Table 2.
Table 2 performance comparison result
| Performance | Hardness/(HBS) | Tensile strength/(MPa) | Unit elongation/(%) | Young's modulus/(kMPa) | Braking distance under 100km/h |
| Embodiment 1 | 170 | 488 | 4.8 | 108 | 19.4m |
| Embodiment 2 | 172 | 486 | 5.2 | 119 | 20.1m |
| Embodiment 3 | 175 | 492 | 5.3 | 116 | 19.6m |
| Comparative example 1 | 89 | 240 | 2.9 | 80 | 21.5 |
| Comparative example 2 | 98 | 279 | 3.1 | 51 | 22.3 |
| Comparative example 3 | 99 | 284 | 2.9 | 50.5 | 22.1 |
| Comparative example 4 | 98 | 280 | 3.0 | 51.5 | 22.6 |
From above comparing result:
The present invention with in prior art, with aluminum base alloy, Magnuminium, compare, the mechanical performance index such as the hardness of material, tensile strength, unit elongation and Young's modulus all increase substantially, particularly intensity and unit elongation improve about 40-50%, material hardness also significantly improves approximately 60%, the braking distance under equal working conditions of prepared brake flange shortens, and doubles left and right its work-ing life.
Claims (6)
1. a brake flange carbon fiber reinforced magnesium-base composite material, it is characterized in that: described brake flange carbon fiber reinforced magnesium-base composite material is that employing magnesium-aluminum-zinc-manganese is that Magnuminium is as matrix, using other carbon fiber of micro/nano level as the wild phase of magnesium-base alloy material, and the method by synthesize-die cast of melt is prepared from.
2. a kind of brake flange carbon fiber reinforced magnesium-base composite material as claimed in claim 1, it is characterized in that: the alloying constituent of described matrix is calculated as according to mass percent: aluminium (Al) 8.0-9.0, zinc (Zn) 0.50-0.90, manganese (Mn) 0.20-0.40, copper (Cu) 0.001-0.025, nickel (Ni) 0-0.001, iron (Fe) 0-0.004, surplus is magnesium (Mg).
3. a kind of brake flange carbon fiber reinforced magnesium-base composite material as claimed in claim 1, is characterized in that the scale feature of described other carbon fiber of micro/nano level is: diameter is in the scope of 1-100nm, and the ratio of staple length and Fibre diameter is within the scope of 1-100.
4. a kind of brake flange carbon fiber reinforced magnesium-base composite material as claimed in claim 1, is characterized in that: described micro-nano carbon fiber add-on is that magnesium-aluminum-zinc-manganese is the 0.3-3% of Magnuminium quality.
5. the preparation method of carbon fiber reinforced magnesium-base composite material for a kind of brake flange as claimed in claim 1, is characterized in that comprising the steps:
(1) carbon fiber fully mixes with magnesium powder, at vacuum lower lock block, prepares the magnesium matrix body of carbon fiber-containing;
(2) melting of magnesium matrix alloy, adjusts the composition of aluminium, zinc, manganese, copper, iron, nickel to specialized range;
(3) temperature of magnesium matrix alloy is controlled at 600 ℃-650 ℃, adds the magnesium matrix body of carbon fiber-containing, adopts induction stirring, and die cast after fusing evenly, obtains described brake flange carbon fiber reinforced magnesium-base composite material.
6. the preparation method of carbon fiber reinforced magnesium-base composite material for a kind of brake flange as claimed in claim 5, its
Be characterised in that: described carbon fiber and metal magnesium powder are in mass ratio in the scope of 1:10-1:2, and the needed vacuum tightness of briquetting requires gaseous tension to be no more than 0.01Pa, and the needed pressure of briquetting is 4 * 10
3kg/m
2, the briquetting making is of a size of 2 * 2 * 2 cm
3-4 * 4 * 4cm
3.
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| CN201310592965.XA CN103627936B (en) | 2013-11-22 | 2013-11-22 | A kind of brake flange carbon fiber reinforced magnesium-base composite material and preparation method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986204A (en) * | 2016-01-06 | 2016-10-05 | 安徽祈艾特电子科技股份有限公司 | Carbon-nanofiber-modified Mg-Al-Zn magnesium alloy material for casting automobile parts and preparation method of material |
| CN106191722A (en) * | 2016-07-13 | 2016-12-07 | 安徽祈艾特电子科技股份有限公司 | A kind of automotive electronics encapsulation carbon nano-fiber strengthens antistatic hydronalium and preparation method thereof |
| CN106399878A (en) * | 2016-11-07 | 2017-02-15 | 南昌专腾科技有限公司 | Carbon-fiber-reinforced magnesium-based composite and preparation system and method |
| CN107523727A (en) * | 2016-06-20 | 2017-12-29 | 张家港市华舰五金工具有限公司 | Magnesium-based composite material doped with carborundum and preparation method thereof |
| CN107604272A (en) * | 2017-09-19 | 2018-01-19 | 安徽恒利增材制造科技有限公司 | A kind of magnesium alloy ingot and preparation method thereof |
| CN108048765A (en) * | 2017-12-22 | 2018-05-18 | 芜湖环瑞汽车内饰件有限公司 | A kind of automotive upholstery production magnesium alloy materials and preparation method thereof |
| CN108486507A (en) * | 2018-06-27 | 2018-09-04 | 赵云飞 | A kind of carbon fiber reinforced magnesium-base alloy material and preparation method thereof |
| CN108588591A (en) * | 2018-05-17 | 2018-09-28 | 沈阳工业大学 | Mechanical bond electromagnetic agitation prepares short carbon fiber reinforced metal-base composites method |
| CN110172652A (en) * | 2019-06-17 | 2019-08-27 | 江仁燕 | A kind of chopped carbon fiber enhancing Mg-Al-Li system alloy-base composite material |
| CN110373616A (en) * | 2019-07-02 | 2019-10-25 | 南昌大学 | A kind of preparation method of strontium and carbon fiber collaboration enhancing magnesium-based composite material |
| CN111043203A (en) * | 2020-01-12 | 2020-04-21 | 宁国飞鹰汽车零部件股份有限公司 | Automobile brake pad adopting carbon fiber reinforced composite material |
| CN112941358A (en) * | 2021-01-11 | 2021-06-11 | 南昌大学 | Preparation method of graphene-reinforced Mg-Al-Zn alloy |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986204A (en) * | 2016-01-06 | 2016-10-05 | 安徽祈艾特电子科技股份有限公司 | Carbon-nanofiber-modified Mg-Al-Zn magnesium alloy material for casting automobile parts and preparation method of material |
| CN107523727A (en) * | 2016-06-20 | 2017-12-29 | 张家港市华舰五金工具有限公司 | Magnesium-based composite material doped with carborundum and preparation method thereof |
| CN106191722A (en) * | 2016-07-13 | 2016-12-07 | 安徽祈艾特电子科技股份有限公司 | A kind of automotive electronics encapsulation carbon nano-fiber strengthens antistatic hydronalium and preparation method thereof |
| CN106399878B (en) * | 2016-11-07 | 2019-03-15 | 威海市金贝壳新材料有限公司 | A kind of carbon fiber reinforced magnesium-base composite material, preparation system and method |
| CN106399878A (en) * | 2016-11-07 | 2017-02-15 | 南昌专腾科技有限公司 | Carbon-fiber-reinforced magnesium-based composite and preparation system and method |
| CN107604272A (en) * | 2017-09-19 | 2018-01-19 | 安徽恒利增材制造科技有限公司 | A kind of magnesium alloy ingot and preparation method thereof |
| CN108048765A (en) * | 2017-12-22 | 2018-05-18 | 芜湖环瑞汽车内饰件有限公司 | A kind of automotive upholstery production magnesium alloy materials and preparation method thereof |
| CN108588591A (en) * | 2018-05-17 | 2018-09-28 | 沈阳工业大学 | Mechanical bond electromagnetic agitation prepares short carbon fiber reinforced metal-base composites method |
| CN108486507A (en) * | 2018-06-27 | 2018-09-04 | 赵云飞 | A kind of carbon fiber reinforced magnesium-base alloy material and preparation method thereof |
| CN110172652A (en) * | 2019-06-17 | 2019-08-27 | 江仁燕 | A kind of chopped carbon fiber enhancing Mg-Al-Li system alloy-base composite material |
| CN110373616A (en) * | 2019-07-02 | 2019-10-25 | 南昌大学 | A kind of preparation method of strontium and carbon fiber collaboration enhancing magnesium-based composite material |
| CN111043203A (en) * | 2020-01-12 | 2020-04-21 | 宁国飞鹰汽车零部件股份有限公司 | Automobile brake pad adopting carbon fiber reinforced composite material |
| CN111043203B (en) * | 2020-01-12 | 2021-06-11 | 安徽飞鹰汽车零部件股份有限公司 | Automobile brake pad adopting carbon fiber reinforced composite material |
| CN112941358A (en) * | 2021-01-11 | 2021-06-11 | 南昌大学 | Preparation method of graphene-reinforced Mg-Al-Zn alloy |
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