CN1314825C - Brake facing made of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material and its preparation process - Google Patents
Brake facing made of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material and its preparation process Download PDFInfo
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- CN1314825C CN1314825C CNB021328706A CN02132870A CN1314825C CN 1314825 C CN1314825 C CN 1314825C CN B021328706 A CNB021328706 A CN B021328706A CN 02132870 A CN02132870 A CN 02132870A CN 1314825 C CN1314825 C CN 1314825C
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- magnesium borate
- crystal whisker
- aluminium
- borate crystal
- particles
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Abstract
The present invention discloses a brake lining prepared from magnesium borate crystal whiskers and ceramic particle reinforcement aluminum base composite materials, and a preparation process of the brake lining. Ceramic particles can be silicon carbide particles, alumina particles, aluminum nitride particles, ferroferric oxide particles, aluminum borate particles, magnesium borate particles, zirconium dioxide particles, etc. The brake lining of the present invention has the advantages of high abrasive resistance, stable friction coefficient, favorable heat-conducting property and good high temperature property. The brake lining of the present invention comprises the following components: the magnesium borate crystal whiskers, the silicon carbide particles, and/or the aluminum borate particles, and/or the magnesium borate particles, and/or aluminum oxide particles, and/or the zirconium dioxide particles, and/or diferrum tetraoxide particles, and/or the aluminum nitride particles, and aluminum and aluminum alloys as the rest.
Description
Affiliated field
The present invention relates to a kind of motorcycle automobile with brake facing and preparation technology, specifically a kind of brake facing by the compound enhanced aluminum matrix composite of ceramic particles such as magnesium borate crystal whisker and silicon-carbide particle belongs to new material technology field.
Background technology
In recent years because non-continuous reinforced aluminium-based composite material has the performance of a series of excellences, cause great attention both domestic and external, particularly non-continuous reinforced aluminium-based composite material has high-wearing feature, stable frictional coefficient, good heat-conducting and excellent high-temperature performance can be used as a kind of novel friction materials and are applied to motorcycle car brake facing.
Technical scheme
The objective of the invention is to disclose the brake facing and the preparation technology of a kind of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material.Ceramic particle can be silicon-carbide particle, alumina particle, ferriferrous oxide particles, aluminum borate particle, magnesium borate particle, zirconium dioxide particle etc.The present invention has high-wearing feature, stable frictional coefficient, good heat-conducting and excellent high-temperature performance.
(Mass%) is as follows for the mass ratio of composition proportion of the present invention:
A. magnesium borate crystal whisker 2-50Mass%
B. mean particle size is silicon-carbide particle (SiC) 0-10% of 1-30 μ m
C. mean particle size is the aluminum borate particle (Al of 1-30 μ m
18B
4O
33) 0-10%
D. mean particle size is the magnesium borate particle (Mg of 1-30 μ m
2B
2O
5) 0-10%
E. mean particle size is the aluminium sesquioxide particle (Al of 1-30 μ m
2O
3) 0-10%
F. mean particle size is the zirconium dioxide particle (ZrO of 1-30 μ m
2) 0-10%
G. mean particle size is the ferriferrous oxide particles (Fe of 1-30 μ m
3O
4) 0-10%
H. mean particle size is aluminum nitride particle (AlN) 0-10% of 1-30 μ m
I. aluminium and aluminium alloy surplus.
Wherein aluminium alloy can be:
Aluminium-Si system alloy, Solder for Al-Cu Joint Welding are that alloy, aluminium-silicon-copper series alloy, Al-Mn series alloy, aluminium-Zn based alloy, aluminium-silicon-copper-Ni-Ti are alloy.
Preparation method of the present invention is:
1. magnesium borate crystal whisker and silicon carbide, three oxygen Al 2 Os, Z 250, aluminum borate, magnesium borate or zirconia ceramic particulate chemical conversion treatment
At first prepare the Ni (NO of 3mol%
3)
2The aqueous solution;
After pouring magnesium borate crystal whisker and ceramic particle into distilled water, the mixture of magnesium borate crystal whisker, pottery and distilled water carries out ultra-sonic dispersion to be handled 1-4 hour;
With the Ni (NO for preparing
3)
2The aqueous solution is poured in the mixture of magnesium borate crystal whisker, ceramic particle and water after the dispersion, Ni (NO
3)
2The weight ratio of the aqueous solution and magnesium borate crystal whisker and ceramic particle is 1: 5-1: 30, then ammoniacal liquor is splashed in the said mixture, until Ni (NO
3)
2With NH
4The OH total overall reaction will constantly be carried out mechanical stirring in splashing into the process of ammoniacal liquor;
2. the preparation of matrix material hot extrusion blank
Squeeze casting method or two kinds of methods of powder metallurgic method are selected in the preparation of matrix material hot extrusion blank;
2.1 squeeze casting method prepares the hot extrusion blank
2.1.1 the preparation technology of whisker and ceramic particle prefabricated component
Pour in the mould after surface treated magnesium borate crystal whisker and ceramic particle mixed, filter the aqueous solution wherein, be pressed into predetermined height, pressure 0.1-1Mpa, dwell time 10-15min, the demoulding then;
2.1.2 the sintering of prefabricated component
Prefabricated component after the compression molding is heated to 700-900 ℃ in electric furnace, is incubated 1 hour, furnace cooling;
2.1.3 extrusion casting
Prefabricated component behind squeeze casting mould and the sintering is heated to 450-500 ℃, prefabricated component is put into mould, the liquid aluminium alloy that will be heated to 700-800 ℃ of fusing in electric furnace is poured mould into, pressurization pressure 5-20Mpa, liquid aluminium alloy is penetrated in the hole of prefabricated component, liquid aluminium alloys such as pressurize solidify the back demoulding under pressure, the hot extrusion blank machines;
2.2 powder metallurgic method prepares the hot extrusion blank
2.2.1 mix powder
In mixing the powder machine, will mix through magnesium borate crystal whisker, ceramic particle and the Al alloy powder that chemical conversion treatment is crossed, blending agent alcohol, after the mixing with the mixed powder vacuum drying, vacuum tightness 10-1pa, 120 ℃ of bake out temperatures, soaking time 4 hours;
2.2.2 compression moulding
Utilize the molded or cold isostatic compaction of mold cold with mixed powder pressing forming, pressure 200-250Mpa;
2.2.3 big envelope
Workpiece after the compression moulding is placed on vacuum soldering and sealing then in the jacket;
2.2.4 hot pressing
The workpiece that soldering and sealing is good is placed in the hot pressing die, is heated to 450-520 ℃, hot pressing pressure 100-200Mpa, pressurize 5-15min, the cooling back demoulding;
3. hot extrusion
Blank after extrusion casting or the jacket hot pressing, the section bar of rod or plate, different size and shape, extrusion temperature 450-500 ℃, extrusion ratio 1: 5-10 are processed in the process hot extrusion.
The performance of magnesium borate crystal whisker of the present invention
Mean length 10-20 μ m
Mean diameter 0.5-5 μ m
Density 2.93g/cm
3
Tensile strength 4Gpa
Epistasis modulus 240Gpa
The performance of magnesium borate crystal whisker of the present invention and ceramic particle reinforced aluminium base composite material is:
Tensile strength: 500-650Mpa
Young's modulus 110-120Gpa
Density 2.6-3.0g/cm
3
Frictional coefficient:
(100℃)0.25-0.65
(150℃)0.25-0.70
(200℃)0.25-0.70
(250℃)0.20-0.70
(300℃)0.15-0.70
Embodiment
Embodiment 1
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 10%
Carbonic acid silicon grain: 10%
Aluminum or aluminum alloy: surplus.
Performance:
Tensile strength 500Mpa
Frictional coefficient 0.4 (100 ℃)
Young's modulus 110Gpa
Density 2.7g/cm
3
Wear rate≤0.3 * 10
-7Cm/ (N.m)
Unit elongation 8%
Embodiment 2
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 20%
Aluminium sesquioxide particle: 10%
Aluminum or aluminum alloy: surplus
Performance:
Tensile strength 650Mpa
Frictional coefficient 0.4 (100 ℃)
Young's modulus 120Gpa
Density 2.6g/cm
3
Wear rate≤0.27 * 10
-7Cm/ (N.m)
Unit elongation 3%
Embodiment 3
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 15%
Aluminum nitride particle: 10%
Aluminum or aluminum alloy: surplus
Performance:
Tensile strength 600Mpa
Frictional coefficient 0.5 (100 ℃)
Young's modulus 117Gpa
Density 2.6g/cm
3
Wear rate≤0.27 * 10
-7Cm/ (N.m)
Unit elongation 3%
Embodiment 4
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 20%
Zirconium dioxide particle: 8%
Aluminum or aluminum alloy: surplus
Performance:
Tensile strength 600Mpa
Frictional coefficient 0.42 (100 ℃)
Young's modulus 120Gpa
Density 3.0g/cm
3
Wear rate≤0.27 * 10
-7Cm/ (N.m)
Unit elongation 5%
Embodiment 5
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 15%
Magnesium borate particle: 5%
Zirconium dioxide particle: 5%
Aluminum or aluminum alloy: surplus.
Performance:
Tensile strength 600Mpa
Frictional coefficient 0.40 (100 ℃)
Young's modulus 110Gpa
Density 2.7g/cm
3
Wear rate≤0.3 * 10
-7Cm/ (N.m)
Unit elongation 8%
Embodiment 6
The mass ratio of composite material compositions is (Mass%):
Magnesium borate crystal whisker: 10%
Magnesium borate particle: 5%
Ferriferrous oxide particles: 5%
Aluminum or aluminum alloy: surplus.
Performance:
Tensile strength 600Mpa
Frictional coefficient 0.5 (100 ℃)
Young's modulus 115Gpa
Density 2.7g/cm
3
Wear rate≤0.27 * 10
-7Cm/ (N.m)
Unit elongation 8%
Claims (3)
1. the brake facing of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material, it is characterized in that: the quality of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material than the mass ratio of composition proportion is:
J. magnesium borate crystal whisker 2-50%
K. mean particle size is the silicon-carbide particle 0-10% of 1-30 μ m
L. mean particle size is the aluminum borate particle 0-10% of 1-30 μ m
M. mean particle size is the magnesium borate particle 0-10% of 1-30 μ m
N. mean particle size is the aluminium sesquioxide particle 0-10% of 1-30 μ m
O. mean particle size is the zirconium dioxide particle 0-10% of 1-30 μ m
P. mean particle size is the ferriferrous oxide particles 0-10% of 1-30 μ m
Q. mean particle size is the aluminum nitride particle 0-10% of 1-30 μ m
R. aluminium and aluminium alloy surplus;
Wherein aluminium alloy is:
Aluminium-Si system alloy, aluminium-copper series alloy, aluminium-silicon-copper series alloy, aluminium-Mn series alloy, aluminium-Zn based alloy or aluminium-silicon-copper-nickel-titanium alloy.
2, the preparation technology of the brake facing of magnesium borate crystal whisker as claimed in claim 1 and ceramic particle reinforced aluminium base composite material is characterized in that:
(1). magnesium borate crystal whisker and silicon carbide, aluminium sesquioxide, Z 250, aluminum borate, magnesium borate or zirconia ceramic particulate chemical conversion treatment
At first prepare the Ni (NO of 3mol%
3)
2The aqueous solution;
After pouring magnesium borate crystal whisker and ceramic particle into distilled water, the mixture of magnesium borate crystal whisker, pottery and distilled water carries out ultra-sonic dispersion to be handled 1-4 hour;
With the Ni (NO for preparing
3)
2The aqueous solution is poured in the mixture of magnesium borate crystal whisker, ceramic particle and water after the dispersion, Ni (NO
3)
2The weight ratio of the aqueous solution and magnesium borate crystal whisker and ceramic particle is 1: 5-1: 30, then ammoniacal liquor is splashed in the said mixture, until Ni (NO
3)
2With NH
4The OH total overall reaction will constantly be carried out mechanical stirring in splashing into the process of ammoniacal liquor;
(2). the preparation of matrix material hot extrusion blank
Squeeze casting method is selected in the preparation of matrix material hot extrusion blank;
2.1 the preparation technology of whisker and ceramic particle prefabricated component
Pour in the mould after surface treated magnesium borate crystal whisker and ceramic particle mixed, filter the aqueous solution wherein, be pressed into predetermined height, pressure 0.1-1Mpa, dwell time 10-15min, the demoulding then;
2.2 the sintering of prefabricated component
Prefabricated component after the compression molding is heated to 700-900 ℃ in electric furnace, is incubated 1 hour, furnace cooling;
2.3 extrusion casting
Prefabricated component behind squeeze casting mould and the sintering is heated to 450-500 ℃, prefabricated component is put into mould, the liquid aluminium alloy that will be heated to 700-800 ℃ of fusing in electric furnace is poured mould into, pressurization pressure 5-20Mpa, liquid aluminium alloy is penetrated in the hole of prefabricated component, liquid aluminium alloys such as pressurize solidify the back demoulding under pressure, the hot extrusion blank machines;
(3). hot extrusion
Blank after the extrusion casting is processed into rod or plate through hot extrusion, and extrusion temperature 450-500 ℃, extrusion ratio 1: 5-10.
3, the preparation technology of the brake facing of magnesium borate crystal whisker as claimed in claim 1 and ceramic particle reinforced aluminium base composite material is characterized in that:
(1). magnesium borate crystal whisker and silicon carbide, aluminium sesquioxide, Z 250, aluminum borate, magnesium borate or zirconia ceramic particulate chemical conversion treatment
At first prepare the Ni (NO of 3mol%
3)
2The aqueous solution;
After pouring magnesium borate crystal whisker and ceramic particle into distilled water, the mixture of magnesium borate crystal whisker, pottery and distilled water carries out ultra-sonic dispersion to be handled 1-4 hour;
With the Ni (NO for preparing
3)
2The aqueous solution is poured in the mixture of magnesium borate crystal whisker, ceramic particle and water after the dispersion, Ni (NO
3)
2The weight ratio of the aqueous solution and magnesium borate crystal whisker and ceramic particle is 1: 5-1: 30, then ammoniacal liquor is splashed in the said mixture, until Ni (NO
3)
2With NH
4The OH total overall reaction will constantly be carried out mechanical stirring in splashing into the process of ammoniacal liquor;
(2). the preparation of matrix material hot extrusion blank
Powder metallurgic method is selected in the preparation of matrix material hot extrusion blank;
2.1 mix powder
In mixing the powder machine, will mix through magnesium borate crystal whisker, ceramic particle and the Al alloy powder that chemical conversion treatment is crossed, blending agent alcohol, after the mixing with the mixed powder vacuum drying, vacuum tightness 10
-1Pa, 120 ℃ of bake out temperatures, soaking time 4 hours;
2.2 compression moulding
Utilize the molded or cold isostatic compaction of mold cold with mixed powder pressing forming, pressure 200-250Mpa;
2.3 big envelope
Workpiece after the compression moulding is placed on vacuum soldering and sealing then in the jacket;
2.4 hot pressing
The workpiece that soldering and sealing is good is placed in the hot pressing die, is heated to 450-520 ℃, hot pressing pressure 100-200Mpa, pressurize 5-15min, the cooling back demoulding;
(3). hot extrusion
Blank after the jacket hot pressing is processed into rod or plate through hot extrusion, and extrusion temperature 450-500 ℃, extrusion ratio 1: 5-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021328706A CN1314825C (en) | 2002-09-05 | 2002-09-05 | Brake facing made of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021328706A CN1314825C (en) | 2002-09-05 | 2002-09-05 | Brake facing made of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414132A CN1414132A (en) | 2003-04-30 |
| CN1314825C true CN1314825C (en) | 2007-05-09 |
Family
ID=4746966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021328706A Expired - Fee Related CN1314825C (en) | 2002-09-05 | 2002-09-05 | Brake facing made of magnesium borate crystal whisker and ceramic particle reinforced aluminium base composite material and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1314825C (en) |
Cited By (1)
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|---|---|---|---|---|
| CN103981391A (en) * | 2014-02-11 | 2014-08-13 | 青海大学 | Aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles and preparation method thereof |
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| CN100359200C (en) * | 2005-06-28 | 2008-01-02 | 河北星月制动元件有限公司 | Reinforced brake lining |
| CN100402691C (en) * | 2005-06-29 | 2008-07-16 | 哈尔滨工业大学 | Aluminium base or magnesium base composite material containing SnO2 coating, reinforced ceramic phase |
| CN100347329C (en) * | 2005-12-09 | 2007-11-07 | 哈尔滨工业大学 | ZnAl2O4 coated aluminium borate whister reinforced aluminium base or magnesium base composite meterial and its preparation method |
| US8647546B2 (en) * | 2009-06-15 | 2014-02-11 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing friction material, friction material and braking device |
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| WO2018230020A1 (en) * | 2017-06-14 | 2018-12-20 | 日立化成株式会社 | Friction member and disc brake pad |
| CN108034908A (en) * | 2018-01-15 | 2018-05-15 | 张磊 | High-volume fractional ceramic whisker strengthens the recycling technique of metal-base composites |
| CN109396401A (en) * | 2018-10-31 | 2019-03-01 | 宁波华源精特金属制品有限公司 | A kind of automatic pedal |
| CN111471943B (en) * | 2020-05-14 | 2021-01-12 | 湖南工程学院 | High-electric-conductivity and heat-conduction aluminum-based composite material and preparation method thereof |
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| US5654246A (en) * | 1985-02-04 | 1997-08-05 | Lanxide Technology Company, Lp | Methods of making composite ceramic articles having embedded filler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981391A (en) * | 2014-02-11 | 2014-08-13 | 青海大学 | Aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles and preparation method thereof |
| CN103981391B (en) * | 2014-02-11 | 2016-05-18 | 青海大学 | Magnesium borate crystal whisker and carborundum particle reinforced aluminum matrix composites and preparation method |
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| Publication number | Publication date |
|---|---|
| CN1414132A (en) | 2003-04-30 |
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