CN116444297B - Refining Process of Silicon-Carbon Composite Brake Disc - Google Patents
Refining Process of Silicon-Carbon Composite Brake Disc Download PDFInfo
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- CN116444297B CN116444297B CN202310684505.3A CN202310684505A CN116444297B CN 116444297 B CN116444297 B CN 116444297B CN 202310684505 A CN202310684505 A CN 202310684505A CN 116444297 B CN116444297 B CN 116444297B
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- brake disc
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- carbon composite
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- 239000002153 silicon-carbon composite material Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007670 refining Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 238000005245 sintering Methods 0.000 claims abstract description 57
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 38
- 230000001680 brushing effect Effects 0.000 claims abstract description 30
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 239000011268 mixed slurry Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 19
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 14
- 229910016006 MoSi Inorganic materials 0.000 claims abstract description 11
- 239000012300 argon atmosphere Substances 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 14
- 230000035484 reaction time Effects 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 230000001737 promoting effect Effects 0.000 claims description 10
- WOCGGVRGNIEDSZ-UHFFFAOYSA-N 4-[2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical compound C=1C=C(O)C(CC=C)=CC=1C(C)(C)C1=CC=C(O)C(CC=C)=C1 WOCGGVRGNIEDSZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910021556 Chromium(III) chloride Inorganic materials 0.000 claims description 8
- 229960000359 chromic chloride Drugs 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 8
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 claims description 8
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- -1 butyl sodium alkoxide Chemical group 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 21
- 238000000576 coating method Methods 0.000 abstract description 21
- 238000007254 oxidation reaction Methods 0.000 abstract description 20
- 230000003647 oxidation Effects 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 10
- 125000002524 organometallic group Chemical group 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 2
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 8
- 239000004917 carbon fiber Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 229910026551 ZrC Inorganic materials 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000004580 weight loss Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 3
- 239000011204 carbon fibre-reinforced silicon carbide Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- UVGLBOPDEUYYCS-UHFFFAOYSA-N silicon zirconium Chemical compound [Si].[Zr] UVGLBOPDEUYYCS-UHFFFAOYSA-N 0.000 description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- GKOPSNQLSIJHDS-UHFFFAOYSA-N 4-sulfanylcyclohexa-1,5-diene-1,4-dicarboxylic acid Chemical compound C1C=C(C=CC1(C(=O)O)S)C(=O)O GKOPSNQLSIJHDS-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000001153 fluoro group Chemical class F* 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000005475 siliconizing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
- C04B2235/5248—Carbon, e.g. graphite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C04B2235/658—Atmosphere during thermal treatment
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- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Braking Arrangements (AREA)
Abstract
The invention relates to the field of brake disc preparation, in particular to a refining process of a silicon-carbon composite brake disc; the operation steps are as follows: weighing 15-40 parts of MoSi 2 30-60 parts of Si, 5-10 parts of C, 5-10 parts of Cr, 1-4 parts of sintering accelerator and 2-3 parts of binder are placed into a reaction kettle, and mixed slurry is obtained after ultrasonic dispersion; brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeatedly brushing for 2-3 times, and then putting into an oven for drying at 60-80 ℃; and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere. The binder is an organometallic binder which is capable of incorporating an organometallic-containing silica sol to enhance the chemical stability and oxidation resistance of the material. After the coating treatment, the material fracture mode is changed from pseudoplasticity to brittle fracture.
Description
Technical Field
The invention relates to the field of brake disc preparation, in particular to a refining process of a silicon-carbon composite brake disc.
Background
The brake disc is an important component of an automobile brake system, and the quality of the brake performance is directly related to the running safety of the vehicle. The cast iron brake disc widely used at present has low heat conductivity, easy heat cracking and poor wear resistance and needs to be improved; the replacement of cast iron brake discs by metal matrix composite brake discs with light weight and excellent performance is a main development direction of automobile brake discs in the future; meanwhile, the automobile industry is used as one of the post industries in China, development is rapid in recent years, and the demand for brake discs is very large.
The Chinese patent application with the application number of CN201811275797.0 discloses a preparation process of a carbon/carbon-silicon carbide-zirconium carbide brake disc, and solves the problems of complicated preparation process steps, higher cost and difficult realization of industrial production in the prior art. The adopted technical scheme is a preparation process of the carbon/carbon-silicon carbide-zirconium carbide brake disc, which comprises the following steps: and (3) preparing a carbon/carbon brake disc blank with a through hole, and preparing a carbon/carbon-silicon carbide-zirconium carbide brake disc. The preparation method of the carbon/carbon-silicon carbide-zirconium carbide brake disc comprises the steps of embedding a carbon/carbon brake disc blank in an infiltrant powder of a silicon-zirconium alloy, and infiltrating silicon at a high temperature. According to the invention, the silicon-zirconium alloy is used as an infiltration agent for infiltration to modify the blank of the carbon/carbon brake disc, the ZrC phase is increased, the oxidation resistance of the carbon-ceramic brake disc is improved, an oxidation-resistant coating is not required to be prepared in the preparation process, the preparation process is simplified, and meanwhile, the hot-pressing, carbonization and molten metal infiltration production period is adopted, the unit cost is low, the requirement on equipment is simple, and the method is suitable for industrial batch production.
The Chinese patent application with the application number of CN202010473214.6 discloses a method for controlling the full reaction of titanium and silicon carbide particles and a brake disc prepared by the method, wherein through intermediate frequency electromagnetic stirring of aluminum-based composite melt, the mutual collision times of potassium fluotitanate and silicon carbide powder are increased under the action of magnetic force multiple pulsation, the oxidation reaction process is accelerated, the quantity of fluorine salt and carbon in aluminum alloy is reduced, the particle diameter of Ti and SiC is larger after the reaction in the preparation process of silicon carbide and potassium fluotitanate is easy to agglomerate, the mass ratio is larger than that of aluminum, the silicon carbide is easy to sink, and the phenomenon of non-uniformity of silicon carbide in aluminum liquid is caused, so that the aluminum-based composite melt particles are uniformly distributed, the fluidity is good, the material forming effect is improved, and the microhardness and the tensile strength of the aluminum-based composite material are improved; the method for controlling the full reaction of titanium and silicon carbide particles disclosed by the invention prepares the aluminum-based casting solution into the aluminum-based brake disc according to the design requirement, and has the advantages of uniform stress intensity, uniform surface roughness and stable friction performance.
The Chinese patent with the application number of CN201711024758.9 discloses a method for preparing a C/SiC material brake disc by utilizing a carbon fiber prepreg tape, wherein the carbon fiber prepreg tape is cut into a short carbon fiber tape with the length of 3-10mm and pressed into a brake disc blank, the blank is carbonized to obtain a carbon/carbon preform, and finally the carbon/carbon preform is subjected to carburizing treatment, namely, the carbon/carbon preform is placed in a graphite crucible, and is subjected to heating treatment for 0.5-2h at 1550-1650 ℃ under the protection of vacuum or inert atmosphere, and then the carbon/carbon preform is cooled along with furnace cooling, so that the carburizing treatment is completed. The C/SiC composite material has the advantages of low cost, short process period, no pollution in the preparation process, simplicity, controllability and the like in the preparation of the carbon-carbon preform, and is expected to be widely applied to the C/SiC composite brake disc.
The above patents and the prior art still have some problems to be further solved: 1) More cracks exist in the coating; 2) The high temperature stability of the coating is poor; 3) The oxidation-resistant temperature range of the coating is narrow, and long-life oxidation resistance of the whole temperature range from low temperature to high temperature is difficult to meet; 4) The high-temperature scouring resistance of the coating is poor; 5) High production cost, complex manufacturing process, long synthesis period, and the like.
Disclosure of Invention
Aiming at the technical problems in the background technology, the invention provides a refining process of a silicon-carbon composite brake disc. The brake disc prepared by the method has excellent oxidation resistance and bending strength, and the service life of the brake disc is prolonged.
In order to achieve the above purpose and achieve the above technical effects, the present invention adopts the following technical scheme:
a refining process of a silicon-carbon composite brake disc comprises the following operation steps:
s1: weighing 15-40 parts of MoSi according to parts by weight 2 30-60 parts of Si, 5-10 parts of C, 5-10 parts of Cr, 1-4 parts of sintering accelerator and 2-3 parts of binder are placed into a reaction kettle, and mixed slurry is obtained after ultrasonic dispersion;
s2: brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeatedly brushing for 2-3 times, and then putting into an oven for drying at 60-80 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
Preferably, the sintering promoting agent is one or more of calcium oxide, magnesium oxide, silicon oxide or copper oxide.
Preferably, the ultrasonic dispersion time is 10-30min.
Preferably, the temperature of the vacuum carbon tube sintering furnace is 1350-1650 ℃ and the sintering time is 15-45min.
Preferably, the binder is an organometallic binder, and the preparation method thereof is as follows:
s1: uniformly mixing 2-5 parts of chromium trichloride, 10-20 parts of terephthalic acid and 100-140 parts of DMF (dimethyl formamide) in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then adding 15-22 parts of vinyl trimethoxy silane, 2-5 parts of diallyl bisphenol A and 3-6 parts of tertiary butyl sodium alkoxide, stirring for reaction, and distilling to remove DMF after the reaction is finished;
s3: and adding 300-500 parts of silica sol, and continuously stirring for 20-50min to obtain the organic metal binder.
Preferably, the reaction temperature of S1 is 60-70 ℃ and the time is 50-120min.
Preferably, the reaction temperature of S2 is 60-80 ℃ and the time is 100-150min.
In the above disclosed scheme, the organometallic binder is prepared by the following mechanism:
(1) Chromium trichloride and p-mercapto terephthalic acid produce a p-mercapto organometallic chromium complex;
(2) Vinyl trimethoxy silane and diallyl bisphenol A continue to generate sulfhydryl addition reaction with the sulfhydryl organometallic chromium complex; obtaining trimethoxysilane containing organic metal; and adding silica sol to obtain the organic metal adhesive.
Compared with the prior art, the refining process of the silicon-carbon composite brake disc has the following remarkable effects:
1. the silicon-carbon composite material brake disc prepared by the invention has the advantages that after the brake disc is oxidized for 30 hours at 1500 ℃, the sample weight loss rate is 1.72%, the coating is still kept well, and the stripping or falling phenomenon does not occur; the adhesive can be introduced into the silica sol containing the organic metal, so that the chemical stability and oxidation resistance of the material can be enhanced, and the organic metal can play a role of a catalyst, so that the silica sol is more firmly attached to the surface of the material, and the oxidation resistance of the material is improved;
2. the invention adopts MoSi 2 The Si-C-Cr is used for preparing the coating, and the silica sol can form a uniform and compact silica protective layer in the coating application process, so that the contact between the surface of the brake disc and the external environment is isolated, and the corrosion and oxidation reaction of air, moisture and other harmful media are prevented. Meanwhile, as the organic metal can improve the adhesion property of the silica sol, the silica sol can be more firmly adhered to the surface of the brake disc, small surface defects and microscopic pores can be filled, and the integrity and durability of the coating are improved. In conclusion, the organic metal chromium complex can improve the oxidation resistance of the coating, and mainly forms a uniform, compact and reliable silicon oxide protective layer by enhancing the stability and adhesiveness of silica sol, so that the oxidation protection capability and the service life of the brake disc are improved;
3. after the silicon-carbon composite material brake disc is subjected to coating treatment, the bending strength is 167Mpa after 30 times of thermal shock, and the material fracture mode is changed from pseudoplasticity to brittle fracture.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
The silicon-carbon composite brake disc used in the following examples and comparative examples was selected from the series of silicon-carbon composite brake discs developed by the inventors,
one example of the product operation steps is:
s1: cleaning the surface of the low-density carbon fiber by ultrasonic for 20min, and drying at 60 ℃;
s2: and (3) embedding the low-density carbon fiber into silicon powder, and carrying out siliconizing for 1h at 1700 ℃ under the condition of argon protection and decompression to obtain the silicon-carbon composite material brake disc.
The preparation method of the low-density carbon fiber comprises the following steps:
40g of carbon fiber is taken and subjected to isothermal and isobaric deposition, and the flow velocity is 1m 3 And (3) taking argon as a carrier gas to obtain the low-density carbon fiber.
The silicon-carbon composite brake disc used in the following examples and comparative examples was selected from the products, but the present invention is not limited to the products of the above preparation methods;
example 1: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 15g MoSi 2 Putting 30gSi, 5gC, 5gCr, 1g sintering accelerator and 2g binder into a reaction kettle, and dispersing by ultrasonic wave to obtain mixed slurry;
s2: uniformly brushing the mixed slurry on the surface of a silicon-carbon composite brake disc, airing at room temperature, repeatedly brushing for 2 times, and putting into an oven for drying at 60 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is calcium oxide.
The ultrasonic dispersion time is 10min.
The temperature of the vacuum carbon tube sintering furnace is 1350 ℃, and the sintering time is 15min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 2g of chromium trichloride, 10g of terephthalic acid with 100g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then adding 15g of vinyl trimethoxy silane, 2g of diallyl bisphenol A and 3g of sodium tert-butoxide, stirring for reaction, and distilling off DMF after the reaction is finished;
s3: then 300g of silica sol is added, and stirring is continued for 20min, so as to obtain the organic metal binder.
The reaction temperature of S1 is 60 ℃ and the reaction time is 50min.
The reaction temperature of S2 is 60 ℃ and the reaction time is 100min.
Example 2: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 20g MoSi 2 Putting 40g gSi g C, 6g Cr, 2g sintering accelerator and 2.5g binder into a reaction kettle, and dispersing by ultrasonic wave to obtain mixed slurry;
s2: brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeating brushing for 2 times, and putting into a drying oven to be dried at 65 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is magnesium oxide.
The ultrasonic dispersion time is 15min.
The temperature of the vacuum carbon tube sintering furnace is 1450 ℃, and the sintering time is 20min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 3g of chromium trichloride, 14g of terephthalic acid p-mercapto and 110g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then 17g of vinyl trimethoxy silane, 3g of diallyl bisphenol A and 4g of sodium tert-butoxide are added, the mixture is stirred and reacted, and DMF is distilled off after the reaction is finished;
s3: 350g of silica sol is added and stirring is continued for 30min to obtain the organic metal binder.
The reaction temperature of S1 is 65 ℃ and the reaction time is 70min.
The reaction temperature of S2 is 65 ℃ and the reaction time is 110min.
Example 3: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 35g MoSi 2 50g gSi g, 8g C, 8g Cr, 3g sintering accelerator and 2.5g binder are put into a reaction kettle, and mixed slurry is obtained after ultrasonic dispersion;
s2: brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeatedly brushing for 3 times, and putting into a baking oven to be dried at 75 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is silicon oxide.
The ultrasonic dispersion time is 25min.
The temperature of the vacuum carbon tube sintering furnace is 1550 ℃, and the sintering time is 40min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 4g of chromium trichloride, 18g of terephthalic acid p-mercapto and 130g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then adding 20g of vinyl trimethoxy silane, 4g of diallyl bisphenol A and 5g of sodium tert-butoxide, stirring for reaction, and distilling off DMF after the reaction is finished;
s3: 450g of silica sol is added, and stirring is continued for 40min, so that the organic metal binder is obtained.
The reaction temperature of S1 is 65 ℃ and the reaction time is 100min.
The reaction temperature of S2 is 75 ℃ and the reaction time is 140min.
Example 4: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: 40g MoSi was weighed 2 Putting 60gSi, 10gC, 10gCr and 4g sintering accelerator and 3g binder into a reaction kettle, and dispersing by ultrasonic waves to obtain mixed slurry;
s2: brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeatedly brushing for 3 times, and then putting into a baking oven to be dried at 80 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is copper oxide.
The ultrasonic dispersion time is 30min.
The temperature of the vacuum carbon tube sintering furnace is 1650 ℃ and the sintering time is 45min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 5g of chromium trichloride, 20g of terephthalic acid with 140g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then 22g of vinyl trimethoxy silane, 5g of diallyl bisphenol A and 6g of sodium tert-butoxide are added, the mixture is stirred and reacted, and DMF is distilled off after the reaction is finished;
s3: 500g of silica sol is added, and stirring is continued for 50min, so that the organic metal binder is obtained.
The reaction temperature of S1 is 70 ℃ and the reaction time is 120min.
The reaction temperature of S2 is 80 ℃ and the reaction time is 150min.
Comparative example 1: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 15g MoSi 2 Putting 30gSi, 5gC, 5gCr and 1g sintering promoting agent into a reaction kettle, and performing ultrasonic dispersion to obtain mixed slurry;
s2: uniformly brushing the mixed slurry on the surface of a silicon-carbon composite brake disc, airing at room temperature, repeatedly brushing for 2 times, and putting into an oven for drying at 60 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is calcium oxide.
The ultrasonic dispersion time is 10min.
The temperature of the vacuum carbon tube sintering furnace is 1350 ℃, and the sintering time is 15min.
Comparative example 2: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 15g MoSi 2 Putting 30gSi, 5gC, 5gCr, 1g sintering accelerator and 2g binder into a reaction kettle, and dispersing by ultrasonic wave to obtain mixed slurry;
s2: uniformly brushing the mixed slurry on the surface of a silicon-carbon composite brake disc, airing at room temperature, repeatedly brushing for 2 times, and putting into an oven for drying at 60 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is calcium oxide.
The ultrasonic dispersion time is 10min.
The temperature of the vacuum carbon tube sintering furnace is 1350 ℃, and the sintering time is 15min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 100g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then 15g of vinyl trimethoxy silane and 3g of sodium tert-butoxide are added, stirred for reaction, and DMF is distilled off after the reaction is finished;
s3: then 300g of silica sol is added, and stirring is continued for 20min, so as to obtain the organic metal binder.
The reaction temperature of S1 is 60 ℃ and the reaction time is 50min.
The reaction temperature of S2 is 60 ℃ and the reaction time is 100min.
Comparative example 3: the refining process of the silicon-carbon composite material brake disc comprises the following operation steps:
s1: weigh 15g MoSi 2 Putting 30gSi, 5gC, 5gCr, 1g sintering accelerator and 2g binder into a reaction kettle, and dispersing by ultrasonic wave to obtain mixed slurry;
s2: uniformly brushing the mixed slurry on the surface of a silicon-carbon composite brake disc, airing at room temperature, repeatedly brushing for 2 times, and putting into an oven for drying at 60 ℃;
s3: and (3) placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under the argon atmosphere.
The sintering promoting agent is calcium oxide.
The ultrasonic dispersion time is 10min.
The temperature of the vacuum carbon tube sintering furnace is 1350 ℃, and the sintering time is 15min.
The adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
s1: uniformly mixing 2g of chromium trichloride, 10g of terephthalic acid with 100g of DMF in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
s2: then adding 2g of diallyl bisphenol A and 3g of sodium tert-butyl alcohol, stirring for reaction, and distilling to remove DMF after the reaction is finished;
s3: then 300g of silica sol is added, and stirring is continued for 20min, so as to obtain the organic metal binder.
The reaction temperature of S1 is 60 ℃ and the reaction time is 50min.
The reaction temperature of S2 is 60 ℃ and the reaction time is 100min.
Example evaluation:
1. oxidation performance test: the oxidation resistance of the coating was tested by experiments with constant temperature oxidation in static air: when the temperature rises to 1500 ℃, placing the sample on an alumina porcelain boat, and rapidly pushing the sample into a constant temperature area; taking out the sample from the furnace after 30 hours, cooling and weighing, and evaluating the oxidation resistance of the coating according to the oxidation weight loss percentage;
2. thermal shock performance test: the thermal shock resistance of the coating at 1500 ℃ is mainly examined: rapidly pushing the coating sample into a corundum tube furnace at 1500 ℃ and preserving heat for 5min, rapidly taking out and cooling to room temperature, weighing, and calculating the oxidation weight loss rate of the coating sample; repeating the above operation until the times are accumulated for 30 times;
3. mechanical property test: testing bending strength of a substrate sample and a coating sample before and after oxidization and thermal shock by a three-point bending method, and evaluating the protective capability of the coating according to the residual bending strength of the oxidized sample; the sample size was 55x10x4mm, the test was performed on an Instron3369 Material mechanics tester, U.S. with a span of 40mm, the loading rate during the test was 1mm/min, and the load versus displacement curve was recorded.
Table 1 brake disc oxidation weight loss rate and bending strength after 30 times of thermal shock prepared in specific implementation method
After the test data of the embodiment and the comparative example are compared, the weight loss rate of the sample of the silicon-carbon composite material brake disc prepared by the invention is only 1.72% after the silicon-carbon composite material brake disc is oxidized for 30 hours at 1500 ℃, and the coating is still kept well without peeling or falling off; after the silicon-carbon composite material brake disc prepared by the invention is subjected to coating treatment, the bending strength reaches 167Mpa after 30 times of thermal shock, and the material fracture mode is changed from pseudoplasticity to brittle fracture.
Claims (4)
1. A refining process of a silicon-carbon composite brake disc is characterized by comprising the following steps of: the operation steps are as follows:
s1: weighing according to parts by weight15-40 parts of MoSi 2 30-60 parts of Si, 5-10 parts of C, 5-10 parts of Cr, 1-4 parts of sintering accelerator and 2-3 parts of binder are placed into a reaction kettle, and mixed slurry is obtained after ultrasonic dispersion;
s2: brushing the mixed slurry on the surface of a silicon-carbon composite brake disc uniformly, airing at room temperature, repeatedly brushing for 2-3 times, and then putting into an oven for drying at 60-80 ℃;
s3: placing the surface of the silicon-carbon composite material brake disc after brushing and drying into a vacuum carbon tube sintering furnace, and sintering under argon atmosphere;
the adhesive is an organic metal adhesive, and the preparation method comprises the following steps:
step 1: uniformly mixing 2-5 parts of chromium trichloride, 10-20 parts of terephthalic acid and 100-140 parts of DMF (dimethyl formamide) in a high-pressure reaction kettle, introducing nitrogen, and stirring for reaction;
step 2: then adding 15-22 parts of vinyl trimethoxy silane, 2-5 parts of diallyl bisphenol A and 3-6 parts of tertiary butyl sodium alkoxide, stirring for reaction, and distilling to remove DMF after the reaction is finished;
step 3: adding 300-500 parts of silica sol, and continuously stirring for 20-50min to obtain an organic metal binder;
the sintering promoting agent is calcium oxide or magnesium oxide or silicon oxide or copper oxide;
the temperature of the vacuum carbon tube sintering furnace is 1350-1650 ℃ and the sintering time is 15-45min.
2. The refining process of the silicon-carbon composite brake disc according to claim 1, wherein: the ultrasonic dispersion time is 10-30min.
3. The refining process of the silicon-carbon composite brake disc according to claim 1, wherein: the reaction temperature in the step 1 is 60-70 ℃ and the reaction time is 50-120min.
4. The refining process of the silicon-carbon composite brake disc according to claim 1, wherein: the reaction temperature in the step 2 is 60-80 ℃ and the reaction time is 100-150min.
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Denomination of invention: Refining process of silicon carbon composite brake discs Effective date of registration: 20231205 Granted publication date: 20230825 Pledgee: Postal Savings Bank of China Limited Yantai Laishan District sub branch Pledgor: Yantai Aosen Brake Material Co.,Ltd. Registration number: Y2023980069383 |
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Granted publication date: 20230825 Pledgee: Postal Savings Bank of China Limited Yantai Laishan District sub branch Pledgor: Yantai Aosen Brake Material Co.,Ltd. Registration number: Y2023980069383 |
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