CN104388845A - Modified silicon carbide fiber-reinforced aluminum metal matrix composite material - Google Patents
Modified silicon carbide fiber-reinforced aluminum metal matrix composite material Download PDFInfo
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- CN104388845A CN104388845A CN201410674824.7A CN201410674824A CN104388845A CN 104388845 A CN104388845 A CN 104388845A CN 201410674824 A CN201410674824 A CN 201410674824A CN 104388845 A CN104388845 A CN 104388845A
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- silicon carbide
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Abstract
The invention discloses a modified silicon carbide fiber-reinforced aluminum metal matrix composite material, comprising the following components by volume: 15%-22% of a silicon carbide fiber and 78%-85% of aluminum alloy. The silicon carbide fiber is subjected to deagglomeration treatment by adopting a surfactant, so that the dispersity of the silicon carbide fiber is increased, and meanwhile, the compatibility with metal matrix is enhanced. According to an automobile brake disc prepared by the modified silicon carbide fiber-reinforced aluminum metal matrix composite material, the density is 2.60-2.75g.cm<-3>; the friction coefficient is 0.38-0.46; the abrasion is equivalent to that when a cast iron brake disc is adopted by a test according to the international society of automotive engineers (SAE) J661a standard; and the light-weight requirements on the automobile brake disc can be met.
Description
Technical field
The invention belongs to automobile brake Material Field, particularly relate to a kind of modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.
Technical background
The automobile brake disc material of current routine is the cast iron materials comprising 3 ~ 4% flake graphites, and its density is about 7.3gcm
-3.Along with the aggravation of oil crisis and the increase of vehicle fuel consume, in the urgent need to alleviating retarding disc quality.In recent years, attempt in industry adopting aluminium alloy to replace cast iron materials casting automobile brake discs, although its lightweight, good heat conductivity, its intensity and hardness lower, hinder the application of aluminium alloy in automobile brake disc field to a certain extent.
Silicon carbide fiber is the high-performance ceramic fiber received much concern in recent years, not only density is little, specific tenacity is large, specific modulus is high for it, linear expansivity is little, but also there is excellent pyro-oxidation resistance, having good compound phase capacitive with metal, pottery, polymkeric substance, is the desirable fortifying fibre of high performance composite.Therefore, adopt silicon carbide fiber to strengthen aluminum metal-matrix composite material, high strength, high rigidity, high thermal conductivity and low-quality better balance can be realized, become the most contenders of alternative cast iron materials.
Research finds: silicon carbide fiber specific surface area is large, very easily reunites, if long time without surface modification treatment and directly adding, then can greatly reduce its performance advantage because mutually reuniting.In order to play the performance of silicon carbide fiber better, need to carry out modification to it.
Summary of the invention
The object of this invention is to provide a kind of modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.By separating process of reuniting, increasing the dispersiveness of silicon carbide fiber, strengthening its consistency with metallic matrix simultaneously, thus prepare one and have high strength, high rigidity, high thermal conductivity and low-quality modified carbonize silica fibre enhancing aluminum metal-matrix composite material concurrently.Meanwhile, modified carbonize silica fibre is strengthened aluminum metal-matrix composite material and use manufacture automobile brake disc, solve the lightness problem of automobile brake disc.
Technical scheme of the present invention is as follows:
A kind of modified carbonize silica fibre strengthens aluminum metal-matrix composite material, its each component by volume mark is counted, the silicon carbide fiber of 15 ~ 22%, 78 ~ 85% aluminium alloys, adopt tensio-active agent to carry out solution reunion process to silicon carbide fiber, the mass ratio of tensio-active agent and silicon carbide fiber is 5: 1 ~ 8: 1; The equivalent diameter of described silicon carbide fiber is 20 ~ 30 μm, and tensile strength is 0.8-2.4GPa; In described aluminium alloy, each component is by mass percentage: silicon 11 ~ 13%, nickel 0.8 ~ 1.5%, copper 0.5 ~ 1.5%, magnesium 0.8 ~ 1.3%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, and all the other are aluminium.
Further, described tensio-active agent is anion surfactant or nonionic surface active agent.
Further, one or more composite in the preferred Sodium hexametaphosphate 99 of described aniorfic surfactant, sodium lauryl sulphate, sodium lignosulfonate, Sodium dodecylbenzene sulfonate.
Further, one or more composite in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80.
Further, described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, and its each component by volume mark is counted, the silicon carbide fiber of 18 ~ 20%, the aluminium alloy of 80 ~ 82%.
Further, described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, and its each component by volume mark is counted, the silicon carbide fiber of 20%, the aluminium alloy of 80%.
Meanwhile, provide a kind of automobile brake disc adopting above-mentioned modified carbonize silica fibre enhancing aluminum metal-matrix composite material to prepare, the density of described automobile brake disc is 2.60 ~ 2.75gcm
-3, frictional coefficient is 0.38 ~ 0.46.
The present invention compared with prior art tool has the following advantages:
(1) by adopting specific surfactant, increase the dispersiveness of silicon carbide fiber, strengthen the consistency of itself and metallic matrix simultaneously, prepare and have high strength, high rigidity, high thermal conductivity and low-quality modified carbonize silica fibre concurrently and strengthen aluminum metal-matrix composite material.
(2) adopt automobile brake disc prepared by modified carbonize silica fibre enhancing aluminum metal-matrix composite material, its density is 2.60 ~ 2.75gcm
-3, quality comparatively same volume cast iron brake disk reduces 30%, achieves the light-weighted target of automobile brake disc; By international robot engineering Shi Xiehui (Society of Automotive Engineers, SAE) J661a standard testing, its frictional coefficient is 0.38 ~ 0.46, suitable when wearing and tearing and employing cast iron brake disk.
Embodiment
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims and limited.
Embodiment 1
(1) prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material:
It is 28 μm by equivalent diameter, tensile strength is that the silicon carbide fiber of 2.0GPa to add in anion surfactant (in the preferred Sodium hexametaphosphate 99 of described aniorfic surfactant, sodium lauryl sulphate, sodium lignosulfonate, Sodium dodecylbenzene sulfonate one or more composite), the mass ratio of silicon carbide fiber and anion surfactant is 5: 1, ultrasonic disperse is after 1.5 ~ 3 hours, use ethanol eccentric cleaning, obtain modified silicon carbide fiber.Aluminium alloy is put into crucible heating to higher than its liquidus temperature more than 100 DEG C, modified silicon carbide fiber is preheating to 500 DEG C.The aluminium alloy of fusing and the silicon carbide fiber of preheating are uniformly mixed under vacuum, and room temperature cools, and prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.It is that the silicon carbide fiber of 15% and the aluminium alloy of 85% form by volume fraction that described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, in aluminium alloy, each component counts silicon 11% by massfraction, nickel 0.8%, copper 0.5%, magnesium 1.3%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, all the other are aluminium.
(2) automobile brake disc is prepared:
After above-mentioned modified carbonize silica fibre is strengthened aluminum metal-matrix composite material melting, pour in predetermined pig mold, made the new brake drum of a Chase machine by extrusion casting.Mechanical workout fin cutting, thermal treatment, the surface of friction 1000 order sand paper polishings of brake drum, surface acetone is cleaned, and seasoning, test density is 2.75gcm
-3.Brake drum is installed to after on Chase machine, and with the standardized component of a brake pad material with 6.1ms-1 speed, 446N load and rubbing in advance lower than 93 DEG C of temperature, to reach a stable frictional coefficient.Adopt ordinary method processing brake pad material, by SAE J661a standard testing, its frictional coefficient is 0.38 ~ 0.40.
Embodiment 2
(1) prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material:
It is 20 μm by equivalent diameter, tensile strength is that the silicon carbide fiber of 2.4GPa adds in nonionogenic tenside (in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80 one or more composite), the mass ratio of silicon carbide fiber and nonionogenic tenside is 8: 1, ultrasonic disperse is after 2 ~ 5 hours, use ethanol eccentric cleaning, obtain modified silicon carbide fiber.Aluminium alloy is put into crucible heating to higher than its liquidus temperature more than 100 DEG C, modified silicon carbide fiber is preheating to 500 DEG C.The aluminium alloy of fusing and the silicon carbide fiber of preheating are uniformly mixed under vacuum, and room temperature cools, and form modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.It is that the silicon carbide fiber of 22% and the aluminium alloy of 78% form by volume fraction that described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, in aluminium alloy, each component counts silicon 13% by massfraction, nickel 1.5%, copper 1.5%, magnesium 0.8%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, all the other are aluminium.
(2) automobile brake disc is prepared:
After above-mentioned modified carbonize silica fibre is strengthened aluminum metal-matrix composite material melting, pour in predetermined pig mold, made the new brake drum of a Chase machine by extrusion casting.Mechanical workout fin cutting, thermal treatment, the surface of friction 1000 order sand paper polishings of brake drum, surface acetone is cleaned, and seasoning, test density is 2.70gcm
-3.Brake drum is installed to after on Chase machine, with the standardized component of a brake pad material with 6.1ms
-1speed, 446N load and rubbing in advance lower than 93 DEG C of temperature, to reach a stable frictional coefficient.Adopt ordinary method processing brake pad material, by SAE J661a standard testing, its frictional coefficient is 0.41 ~ 0.46.
Embodiment 3
(1) prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material:
It is 30 μm by equivalent diameter, tensile strength is that the silicon carbide fiber of 0.8GPa adds in nonionogenic tenside (in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80 one or more composite), the mass ratio of silicon carbide fiber and nonionogenic tenside is 8: 1, ultrasonic disperse is after 4 ~ 5 hours, use ethanol eccentric cleaning, obtain modified silicon carbide fiber.Aluminium alloy is put into crucible heating to higher than its liquidus temperature more than 100 DEG C, modified silicon carbide fiber is preheating to 500 DEG C.The aluminium alloy of fusing and the silicon carbide fiber of preheating are uniformly mixed under vacuum, and room temperature cools, and form modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.It is that the silicon carbide fiber of 18% and the aluminium alloy of 82% form by volume fraction that described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, in aluminium alloy, each component counts silicon 12% by massfraction, nickel 1.0%, copper 1.0%, magnesium 1.2%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, all the other are aluminium.
(2) automobile brake disc is prepared:
After above-mentioned modified carbonize silica fibre is strengthened aluminum metal-matrix composite material melting, pour in predetermined pig mold, made the new brake drum of a Chase machine by extrusion casting.Mechanical workout fin cutting, thermal treatment, the surface of friction 1000 order sand paper polishings of brake drum, surface acetone is cleaned, and seasoning, test density is 2.68gcm
-3.Brake drum is installed to after on Chase machine, with the standardized component of a brake pad material with 6.1ms
-1speed, 446N load and rubbing in advance lower than 93 DEG C of temperature, to reach a stable frictional coefficient.Adopt ordinary method processing brake pad material, by SAE J661a standard testing, its frictional coefficient is 0.44 ~ 0.46.
Embodiment 4
(1) prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material:
It is 25 μm by equivalent diameter, tensile strength is that the silicon carbide fiber of 2.0GPa adds in nonionogenic tenside (in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80 one or more composite), the mass ratio of silicon carbide fiber and nonionogenic tenside is 8: 1, ultrasonic disperse is after 4 ~ 5 hours, use ethanol eccentric cleaning, obtain modified silicon carbide fiber.Aluminium alloy is put into crucible heating to higher than its liquidus temperature more than 100 DEG C, modified silicon carbide fiber is preheating to 500 DEG C.The aluminium alloy of fusing and the silicon carbide fiber of preheating are uniformly mixed under vacuum, and room temperature cools, and form modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.It is that the silicon carbide fiber of 20% and the aluminium alloy of 80% form by volume fraction that described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, in aluminium alloy, each component counts silicon 11% by massfraction, nickel 1.5%, copper 1.4%, magnesium 0.9%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, all the other are aluminium.
(2) automobile brake disc is prepared:
After above-mentioned modified carbonize silica fibre is strengthened aluminum metal-matrix composite material melting, pour in predetermined pig mold, made the new brake drum of a Chase machine by extrusion casting.Mechanical workout fin cutting, thermal treatment, the surface of friction 1000 order sand paper polishings of brake drum, surface acetone is cleaned, and seasoning, test density is 2.60gcm
-3.Brake drum is installed to after on Chase machine, and with the standardized component of a brake pad material with 6.1ms-1 speed, 446N load and rubbing in advance lower than 93 DEG C of temperature, to reach a stable frictional coefficient.Adopt ordinary method processing brake pad material, by SAE J661a standard testing, its frictional coefficient is 0.45 ~ 0.46.
Embodiment 5
(1) prepare modified carbonize silica fibre and strengthen aluminum metal-matrix composite material:
It is 30 μm by equivalent diameter, tensile strength is that the silicon carbide fiber of 2.4GPa adds in nonionogenic tenside (in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80 one or more composite), the mass ratio of silicon carbide fiber and nonionogenic tenside is 8: 1, ultrasonic disperse is after 3 ~ 4 hours, use ethanol eccentric cleaning, obtain modified silicon carbide fiber.Aluminium alloy is put into crucible heating to higher than its liquidus temperature more than 100 DEG C, modified silicon carbide fiber is preheating to 500 DEG C.The aluminium alloy of fusing and the silicon carbide fiber of preheating are uniformly mixed under vacuum, and room temperature cools, and form modified carbonize silica fibre and strengthen aluminum metal-matrix composite material.It is that the silicon carbide fiber of 20% and the aluminium alloy of 80% form by volume fraction that described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, in aluminium alloy, each component counts silicon 11% by massfraction, nickel 1.5%, copper 1.4%, magnesium 0.9%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, all the other are aluminium.
(2) automobile brake disc is prepared:
After above-mentioned modified carbonize silica fibre is strengthened aluminum metal-matrix composite material melting, pour in predetermined pig mold, made the new brake drum of a Chase machine by extrusion casting.Mechanical workout fin cutting, thermal treatment, the surface of friction 1000 order sand paper polishings of brake drum, surface acetone is cleaned, and seasoning, test density is 2.62gcm
-3.Brake drum is installed to after on Chase machine, and with the standardized component of a brake pad material with 6.1ms-1 speed, 446N load and rubbing in advance lower than 93 DEG C of temperature, to reach a stable frictional coefficient.Adopt ordinary method processing brake pad material, by SAE J661a standard testing, its frictional coefficient is 0.46.
The wearing and tearing of the light-duty retarding disc of above-described embodiment indication are with all suitable during employing graphitic cast iron retarding disc.
Claims (7)
1. modified carbonize silica fibre strengthens an aluminum metal-matrix composite material, and it is characterized in that, each component by volume mark is counted, the silicon carbide fiber of 15 ~ 22%, 78 ~ 85% aluminium alloys; The equivalent diameter of described silicon carbide fiber is 20 ~ 30 μm, and tensile strength is 0.8-2.4GPa; In described aluminium alloy, each component is by mass percentage: silicon 11 ~ 13%, nickel 0.8 ~ 1.5%, copper 0.5 ~ 1.5%, magnesium 0.8 ~ 1.3%, iron 0.7%, titanium 0.2%, manganese 0.2%, zinc 0.2%, and all the other are aluminium; Tensio-active agent is adopted to carry out solution reunion process to silicon carbide fiber.
2. a kind of modified carbonize silica fibre according to claim 1 strengthens aluminum metal-matrix composite material, it is characterized in that: described tensio-active agent is anion surfactant or nonionic surface active agent.
3. a kind of modified carbonize silica fibre according to claim 2 strengthens aluminum metal-matrix composite material, it is characterized in that: one or more composite in the preferred Sodium hexametaphosphate 99 of described aniorfic surfactant, sodium lauryl sulphate, sodium lignosulfonate, Sodium dodecylbenzene sulfonate, the mass ratio of aniorfic surfactant and silicon carbide fiber is 5: 1.
4. a kind of modified carbonize silica fibre according to claim 2 strengthens aluminum metal-matrix composite material, it is characterized in that: one or more composite in the preferred polyoxyethylene glycol of described nonionogenic tenside, polyvinyl alcohol, polyvinylpyrrolidone, Tween20, Span80, the mass ratio of nonionic surface active agent and silicon carbide fiber is 8: 1.
5. a kind of modified carbonize silica fibre according to claim 1 strengthens aluminum metal-matrix composite material, it is characterized in that: described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, its each component by volume mark is counted: the silicon carbide fiber of 18 ~ 20%, the aluminium alloy of 80 ~ 82%.
6. a kind of modified carbonize silica fibre according to claim 1 strengthens aluminum metal-matrix composite material, it is characterized in that: described modified carbonize silica fibre strengthens aluminum metal-matrix composite material, its each component by volume mark is counted: the silicon carbide fiber of 20%, the aluminium alloy of 80%.
7. adopt an automobile brake disc prepared by modified carbonize silica fibre enhancing aluminum metal-matrix composite material as claimed in claim 1, the density of described automobile brake disc is 2.60 ~ 2.75gcm
-3, frictional coefficient is 0.38 ~ 0.46.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086726A (en) * | 2016-07-18 | 2016-11-09 | 哈尔滨工业大学 | SiC nanowire reinforced aluminum matrix composites and preparation method thereof |
| CN107150122A (en) * | 2017-05-05 | 2017-09-12 | 孝感双华应用科技开发有限公司 | A kind of preparation method of lightweight aluminum matrix composite |
| CN108950730A (en) * | 2018-07-23 | 2018-12-07 | 浙江理工大学 | It is a kind of to prepare silicon carbide nanometer line/alginic acid composite fibre spinning process |
| CN110508819A (en) * | 2019-09-20 | 2019-11-29 | 深圳市鑫迪科技有限公司 | A kind of injection molding feeding of silicon carbide compound 316L metal powder and preparation method thereof |
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| CN101250651A (en) * | 2008-04-02 | 2008-08-27 | 华南理工大学 | Light car brake disk of silicon carbide particle reinforced aluminum metal-matrix composite material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101392357A (en) * | 2007-09-19 | 2009-03-25 | 中国科学院金属研究所 | Proximal melting state diffusion technology for preparing SiC fiber/aluminum base composite material |
| CN101250651A (en) * | 2008-04-02 | 2008-08-27 | 华南理工大学 | Light car brake disk of silicon carbide particle reinforced aluminum metal-matrix composite material |
Non-Patent Citations (1)
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| 中国航空工业集团公司复合材料技术中心: "《航空复合材料技术》", 31 December 2013 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086726A (en) * | 2016-07-18 | 2016-11-09 | 哈尔滨工业大学 | SiC nanowire reinforced aluminum matrix composites and preparation method thereof |
| CN107150122A (en) * | 2017-05-05 | 2017-09-12 | 孝感双华应用科技开发有限公司 | A kind of preparation method of lightweight aluminum matrix composite |
| CN107150122B (en) * | 2017-05-05 | 2019-05-14 | 新昌县寅创汽车配件有限公司 | A kind of preparation method of lightweight aluminum matrix composite |
| CN108950730A (en) * | 2018-07-23 | 2018-12-07 | 浙江理工大学 | It is a kind of to prepare silicon carbide nanometer line/alginic acid composite fibre spinning process |
| CN108950730B (en) * | 2018-07-23 | 2020-12-11 | 浙江理工大学 | Spinning method for preparing silicon carbide nanowire/alginic acid composite fiber |
| CN110508819A (en) * | 2019-09-20 | 2019-11-29 | 深圳市鑫迪科技有限公司 | A kind of injection molding feeding of silicon carbide compound 316L metal powder and preparation method thereof |
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Application publication date: 20150304 |