CN100358667C - Carbon/silicon carbide composite material instant liquid phase dispersion welding method - Google Patents
Carbon/silicon carbide composite material instant liquid phase dispersion welding method Download PDFInfo
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- CN100358667C CN100358667C CNB2005100963132A CN200510096313A CN100358667C CN 100358667 C CN100358667 C CN 100358667C CN B2005100963132 A CNB2005100963132 A CN B2005100963132A CN 200510096313 A CN200510096313 A CN 200510096313A CN 100358667 C CN100358667 C CN 100358667C
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Abstract
The present invention discloses a carbon /silicon carbide composite material instant liquid phase diffusion welding method, the purpose of which is to solve the connecting problem of C/SiC composite material bodies in the prior art. The carbon /silicon carbide composite material instant liquid phase diffusion welding method comprises the following steps: the welding surfaces of a C/SiC composite material, a Ti foil and a Ni foil are prepared, and the Ti foil and the Ni foil are combined to a metal intermediate layer Ti/Ni/Ti structure; the metal intermediate layer Ti/Ni/Ti structure is placed between the welding surfaces of two C/SiC composite materials and is placed between an upper press head and a lower press head in a vacuum diffusion welding furnace, a ceramic welding resistance layer is placed between each press head and each C/SiC composite material, and precompression is added to carry out compaction; welding pressure and temperature are applied to finish the connection of the C/SiC composite material bodies. Because the instant liquid phase diffusion welding method is adopted, compared with the temperature which is from 1250 DEG C to 1350 DEG C needed in the prior art, the welding temperature of the used vacuum diffusion welding furnace is from 1000 DEG C to 1100 DEG C, and is lowered by 250 DEG C. The welding pressure is from 0.2MPa to 2MPa and is 1/10 of the pressure which is 20MPa or 30MPa needed in the prior art. The connecting cost of the C/SiC composite material bodies can be reduced.
Description
Technical field
The present invention relates to a kind of carbon/composite material of silicon carbide welding method, particularly carbon/carbon/silicon carbide composite material instant liquid phase dispersion welding method.
Background technology
Document " the online liquid infiltration of three-dimensional C/SiC composite connects; Tong Qiaoying; Cheng Laifei; Zhang Litong; " Rare Metals Materials and engineering ", 33 (1), 2004; p.101～104 " introduced a kind of method of attachment of C/SiC composite body, and this method adopts liquid infiltration to realize being connected of C/SiC composite and C/SiC composite.By Ni base alloy bonding agent, employing hot pressing is permeated bonding agent and is formed the gradient interlock in C/SiC composite hole, 1250～1350 ℃ of hot pressing temperatures, and pressure 20MPa or 30MPa, the time is 5～15min or 45min.
But this method still has the following disadvantages, the one, connect temperature required height, and up to 1250～1350 ℃, the 2nd, connect required pressure height, up to 20MPa or 30MPa.
Summary of the invention
Temperature required and the high deficiency of pressure for the connection that overcomes prior art C/SiC composite body, the invention provides a kind of carbon/carbon/silicon carbide composite material instant liquid phase dispersion welding method, connection procedure does not need to use superhigh temperature, super-pressure hot pressing furnace, and in general Vacuum diffusion bonding furnace, promptly can realize, can reduce the cost that C/SiC composite body connects.
The technical solution adopted for the present invention to solve the technical problems is: a kind of carbon/carbon/silicon carbide composite material instant liquid phase dispersion welding method comprises the steps:
1) polishing C/SiC composite surface to be welded remove surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent, dries;
2) get two on the Ti paper tinsel that thickness is 18～70 μ m, surface film oxide is removed in pickling, get thickness and be one on the Ni paper tinsel of 15～60 μ m, ultrasonic wave cleans in anhydrous ethanol solvent, to wash away cleaning in the cleaning of deionized water for ultrasonic ripple together through the Ti paper tinsel and the Ni paper tinsel of preliminary treatment, dry, be combined into metal intermediate layer Ti/Ni/Ti structure;
3) with metal intermediate layer Ti/Ni/Ti structure, place between two C/SiC composite surfaces to be welded, and be positioned between interior seaming chuck of Vacuum diffusion bonding furnace and the push-down head, between pressure head and C/SiC composite, place ceramic solder mask, apply the precompression compacting;
4) close the door for vacuum chamber of Vacuum diffusion bonding furnace, be evacuated to 6.3 * 10
-3Pa applies the welding pressure of 0.2～1MPa, and the speed with 5～8 ℃/min is warming up to 1000～1100 ℃ of welding temperatures then, and insulation 20～120min is chilled to room temperature with stove, release after being cooled to 500 ℃ with the speed of 3～5 ℃/min then.
The invention has the beneficial effects as follows: owing to adopt instant liquid-phase diffusion welding to connect method, the welding temperature of employed Vacuum diffusion bonding furnace is 1000～1100 ℃, reduces by 250 ℃ for temperature required 1250～1350 ℃ than prior art; Welding pressure is 0.2～2MPa, is 1/10 of required pressure 20MPa of prior art or 30MPa, can reduce the cost that C/SiC composite body connects.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the welding process of the present invention schematic diagram that is installed
Among the figure, 1-push-down head, 2-pottery solder mask, 3-C/SiC composite, 4-seaming chuck, 5-Ti paper tinsel, 6-Ni paper tinsel.
The specific embodiment
The present invention proposes a kind of method of attachment of C/SiC composite body from the angle of instant liquid-phase diffusion welding.This method has adopted special intermediate layer design, i.e. welding material and structural design.This intermediate layer forms by Ti/Ni/Ti three-layer metal paper tinsel layer is folded mutually, is inserted between two surfaces to be welded of C/SiC composite, and applies certain welding pressure, is warmed up to welding temperature in Vacuum diffusion bonding furnace, and the insulation certain hour.During this period, eutectic reaction takes place in Ti and Ni, generates low melting point liquid metal, i.e. " contact melting ".This liquid metal is wetting and penetrate in the C/SiC matrices of composite material, simultaneously with the C/SiC composite in C, Si chemical reaction takes place produces chemical bonding.Along with the further diffusion of atom in liquid metal in the remaining solid phase Ni layer of intermediate layer, and and liquid phase in Ti in conjunction with generating dystectic Ni-Ti intermetallic compound, finally solidify, " isothermal solidification " phenomenon has promptly taken place because of its fusing point is higher than welding temperature.The connection mechanism that mechanical snap combines with chemical reaction is realized in the cooling back, has finished the connection of C/SiC composite body.
Embodiment 1: two-dimentional C/SiC composite, surface to be welded is parallel with the C fibrage body.
The two-dimentional C/SiC composite surface to be welded of polishing is removed surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent.Choosing Ti paper tinsel thickness is that 18 μ m, Ni paper tinsel thickness are 15 μ m.Ultrasonic wave cleans the Ni paper tinsel in anhydrous ethanol solvent.Pickling Ti paper tinsel is removed surface film oxide, and washes away cleaning in the cleaning of deionized water for ultrasonic ripple together with the Ni paper tinsel.
Dry C/SiC composite, Ti paper tinsel, Ni paper tinsel, be installed before welding then, on push-down head 1, place ceramic solder mask 2, on ceramic solder mask 2, place C/SiC composite 3, put and welded big metal intermediate layer such as C/SiC composite, place another piece C/SiC composite again, last, between C/SiC composite 3 and seaming chuck 4, place ceramic solder mask 2, and apply precompression the weldment compacting.Metal intermediate layer is combined into the Ti/Ni/Ti structure.
Close door for vacuum chamber, be evacuated to 6.3 * 10
-3Pa, applying welding pressure is 0.2MPa, and remains to the welding end.Speed with 5 ℃/min is warming up to 1000 ℃ of welding temperatures then, and insulation 120min is chilled to room temperature with stove after being cooled to 500 ℃ with the speed of 3 ℃/min then.
Through check, the shear strength of joint is 12MPa after the seam.
Embodiment 2: two-dimentional C/SiC composite, surface to be welded is parallel with the C fibrage body.
The two-dimentional C/SiC composite surface to be welded of polishing is removed surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent.Choosing Ti paper tinsel thickness is that 35 μ m, Ni paper tinsel thickness are 30 μ m.Ultrasonic wave cleans the Ni paper tinsel in anhydrous ethanol solvent.Pickling Ti paper tinsel is removed surface film oxide, and washes away cleaning in the cleaning of deionized water for ultrasonic ripple together with the Ni paper tinsel.
C/SiC composite after drying, Ti paper tinsel, Ni paper tinsel are installed before welding, and the order that is installed is with embodiment 1.
Close door for vacuum chamber, be evacuated to 6.3 * 10
-3Pa, applying welding pressure is 1MPa, and remains to the welding end.Speed with 7 ℃/min is warming up to 1100 ℃ of welding temperatures then, and insulation 60min is chilled to room temperature with stove after being cooled to 500 ℃ with the speed of 5 ℃/min then.
Through check, the shear strength of joint is 16MPa after the seam.
Embodiment 3: three-dimensional C/SiC composite, surface to be welded is vertical with the C fibrage body.
The three-dimensional C/SiC composite surface to be welded of polishing is removed surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent.Choosing Ti paper tinsel thickness is that 70 μ m, Ni paper tinsel thickness are 60 μ m.Ultrasonic wave cleans the Ni paper tinsel in anhydrous ethanol solvent.Pickling Ti paper tinsel is removed surface film oxide, and washes away cleaning in the cleaning of deionized water for ultrasonic ripple together with the Ni paper tinsel.
C/SiC composite after drying, Ti paper tinsel, Ni paper tinsel are installed before welding, and the order that is installed is with embodiment 1.
Close door for vacuum chamber, be evacuated to 6.3 * 10
-3Pa, applying welding pressure is 1MPa, and remains to the welding end.Speed with 7 ℃/min is warming up to 1080 ℃ of welding temperatures then, and insulation 20min is chilled to room temperature with stove after being cooled to 500 ℃ with the speed of 4 ℃/min then.
Through check, the shear strength of joint is 28MPa after the seam.
Embodiment 4: three-dimensional C/SiC composite, surface to be welded is vertical with the C fibrage body.
The three-dimensional C/SiC composite surface to be welded of polishing is removed surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent.Choosing Ti paper tinsel thickness is that 45 μ m, Ni paper tinsel thickness are 40 μ m.Ultrasonic wave cleans the Ni paper tinsel in anhydrous ethanol solvent.Pickling Ti paper tinsel is removed surface film oxide, and washes away cleaning in the cleaning of deionized water for ultrasonic ripple together with the Ni paper tinsel.
C/SiC composite after drying, Ti paper tinsel, Ni paper tinsel are installed before welding, and the order that is installed is with embodiment 1.
Close door for vacuum chamber, be evacuated to 6.3 * 10
-3Pa, applying welding pressure is 0.2MPa, and remains to and weld end.Speed with 8 ℃/min is warming up to 1010 ℃ of welding temperatures then, and insulation 60min is chilled to room temperature with stove after being cooled to 500 ℃ with the speed of 5 ℃/min then.
Through check, the shear strength of joint is 32MPa after the seam.
Claims (1)
1, a kind of carbon/carbon/silicon carbide composite material instant liquid phase dispersion welding method comprises the steps:
1) polishing C/SiC composite surface to be welded remove surperficial SiC layer, and ultrasonic wave cleans deoiling and washes away cleaning in anhydrous ethanol solvent, dries;
2) get two on the Ti paper tinsel that thickness is 18～70 μ m, surface film oxide is removed in pickling, get thickness and be one on the Ni paper tinsel of 15～60 μ m, ultrasonic wave cleans in anhydrous ethanol solvent, to wash away cleaning in the cleaning of deionized water for ultrasonic ripple together through the Ti paper tinsel and the Ni paper tinsel of preliminary treatment, dry, be combined into metal intermediate layer Ti/Ni/Ti structure;
3) with metal intermediate layer Ti/Ni/Ti structure, place between two C/SiC composite surfaces to be welded, and be positioned between interior seaming chuck of Vacuum diffusion bonding furnace and the push-down head, between pressure head and C/SiC composite, place ceramic solder mask, apply the precompression compacting;
4) close the door for vacuum chamber of Vacuum diffusion bonding furnace, be evacuated to 6.3 * 10
-3Pa applies the welding pressure of 0.2～1MPa, and the speed with 5～8 ℃/min is warming up to 1000～1100 ℃ of welding temperatures then, and insulation 20～120min is chilled to room temperature with stove, release after being cooled to 500 ℃ with the speed of 3～5 ℃/min then.
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| CNB2005100963132A CN100358667C (en) | 2005-11-08 | 2005-11-08 | Carbon/silicon carbide composite material instant liquid phase dispersion welding method |
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| CNB2005100963132A CN100358667C (en) | 2005-11-08 | 2005-11-08 | Carbon/silicon carbide composite material instant liquid phase dispersion welding method |
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| CN100358667C true CN100358667C (en) | 2008-01-02 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239420B (en) * | 2008-03-19 | 2010-06-02 | 哈尔滨工业大学 | Soldering method of composite foil for carbon/silicon carbide and niobium or niobium alloy |
| CN102584311A (en) * | 2012-02-21 | 2012-07-18 | 内蒙古工业大学 | Ceramic connection method by using high-temperature interlayer material |
| CN106270882B (en) * | 2016-08-19 | 2020-03-24 | 哈尔滨工业大学（威海） | Titanium-plated Al in artificial retina2O3Method for connecting ceramic and titanium ring |
| CN106747553B (en) * | 2017-02-21 | 2019-12-27 | 西北工业大学 | Method for realizing non-pressure connection between C/C composite materials |
| CN108927608A (en) * | 2017-05-27 | 2018-12-04 | 天津理工大学 | Sound based on monotectic reaction causes transient liquid phase welding method and its application |
| CN109926678B (en) * | 2017-12-18 | 2021-12-31 | 天津大学 | Method for metallurgically connecting high-temperature alloy by liquid film |
| CN109437958B (en) * | 2018-12-18 | 2021-07-20 | 中核北方核燃料元件有限公司 | Method for connecting silicon carbide composite material pipe and silicon carbide ceramic end plug |
| CN113042879B (en) * | 2021-03-12 | 2022-05-03 | 杭州沈氏节能科技股份有限公司 | Silicon carbide diffusion welding method and silicon carbide heat exchanger |
| CN113182631B (en) * | 2021-04-29 | 2022-10-21 | 浙江工业大学 | Method for preparing high-strength C/C composite material and TC4 alloy joint |
| CN114892262A (en) * | 2022-05-20 | 2022-08-12 | 贵州省紫安新材料科技有限公司 | Spliced carbon heat-preservation cylinder and manufacturing method thereof |
| CN115319259A (en) * | 2022-08-22 | 2022-11-11 | 中国航发北京航空材料研究院 | Ti/Nb + V composite interlayer for TiAl alloy/steel connection and diffusion welding method |
| CN116813358A (en) * | 2023-06-21 | 2023-09-29 | 杭州沈氏节能科技股份有限公司 | Forming process of silicon carbide plate and silicon carbide plate prepared by forming process |
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| US4784313A (en) * | 1986-03-14 | 1988-11-15 | Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung | Method for bonding silicon carbide molded parts together or with ceramic or metal parts |
| US4715525A (en) * | 1986-11-10 | 1987-12-29 | Rohr Industries, Inc. | Method of bonding columbium to titanium and titanium based alloys using low bonding pressures and temperatures |
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