CN102371719A - Method for preparing copper/molybdenum/copper layered compound metallic material - Google Patents

Method for preparing copper/molybdenum/copper layered compound metallic material Download PDF

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CN102371719A
CN102371719A CN2011102509830A CN201110250983A CN102371719A CN 102371719 A CN102371719 A CN 102371719A CN 2011102509830 A CN2011102509830 A CN 2011102509830A CN 201110250983 A CN201110250983 A CN 201110250983A CN 102371719 A CN102371719 A CN 102371719A
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copper
molybdenum
plate
copper coin
composite
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CN102371719B (en
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张家毓
李选明
董运涛
梁艳
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Northwest Institute for Non Ferrous Metal Research
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Northwest Institute for Non Ferrous Metal Research
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Abstract

The invention discloses a method for preparing a copper/molybdenum/copper layered compound metallic material, which comprises the following steps of: 1) polishing to-be-compounded surfaces of a first copper plate, a second copper plate and a molybdenum plate; 2) explosively compounding the molybdenum plate with the first copper plate, thereby acquiring a compound plate; 3) annealing the compound plate; 4) explosively compounding the compound plate with the second copper plate, thereby acquiring a copper/molybdenum/copper compound plate slab; 5) performing hot-rolling on the copper/molybdenum/copper compound plate slab; and 6) annealing and cooling the compound plate slab along with a furnace, thereby acquiring the copper/molybdenum/copper layered compound metallic material. The method provided by the invention is simple; the demand on equipment is low; the production cost is low; the volume production is easily realized; and the method is higher in production application value. According to the method, an explosive compounding technique is used for realizing the copper/molybdenum compounding, thereby overcoming the processing difficulty in compounding copper and molybdenum. Rolling technical parameters are controlled, thereby avoiding the situations of cracked compound interface and broken molybdenum and supplying a powerful technical support for the volume production of the copper/molybdenum/copper layered compound metallic material.

Description

A kind of copper/molybdenum/copper layered composite metal preparation methods
Technical field
The invention belongs to the laminar composite preparing technical field, be specifically related to a kind of copper/molybdenum/copper layered composite metal preparation methods.
Background technology
Copper/molybdenum/copper metallic composite possesses excellent heat, electrical property, in large scale integrated circuit and HIGH-POWERED MICROWAVES device, uses as substrate, abaculus, connector and heat dissipation element.Its high heat conduction and hear resistance have greatly improved the function of use of microelectronic component, make device miniaturization; Its suitable thermal coefficient of expansion can be connected with semi-conducting material such as silicon, GaAs in the microelectronic component and ceramic material well matched, and the heat fatigue of avoiding thermal stress to cause is destroyed.
At present, the preparation method of copper/molybdenum/copper laminated-metal composite has following several kinds:
(1) explosive welding composite algorithm; The high-strength chemical energy that produces by explosive charge drives compound plate high velocity impact substrate; The moment HTHP that the point of impingement produces has not only destroyed the oxide-film of metal surface; Exposed fresh surface, and, realized the strong combination of different metal exposing the welding transition district that is similar to fluid and waveform metallurgical binding characteristic that formation one deck has plastic deformation, fusing, diffusion on the fresh metal surface.
Can see copper and molybdenum not solid solution mutually on the copper molybdenum binary phase diagraml, both can not form true alloy, and the physical property of copper and molybdenum differs greatly, and conventional welding method can not make the copper molybdenum be soldered to together.The explosive welding composite algorithm just has the ability of the big metal of this type of soldering copper/molybdenum performance difference, but this method is fit to the production of bigger, thick composite plate of individual area and slab, even can not Direct Production for thin composite plate.
(2) roll-bonding method, metallic plate apply under the pressure effect powerful on it receiving milling train, double layer of metal treat composite surface generation plastic deformation, surface metal-layer breaks.Subsequently, cleaning and the metal level of activation exposes from the metal surface of breaking under the crunch effect, forms plane metallurgical binding.Faying face continues to enlarge in follow-up heat treatment process, forms firmly to combine.
Rollingly compoundly must impose bigger initial reduction in pass, impel the physics contact of composite surface, for copper/molybdenum group concerning, bigger metal strain very easily makes molybdenum plate that fracture or slabbing take place.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to above-mentioned prior art; Provide a kind of method simple, not high to equipment requirements, production cost is low; Realize easily producing in batches, have copper/molybdenum/copper layered composite metal preparation methods that production application preferably is worth.This method adopts the blast complex technique to realize the compound of copper/molybdenum; Overcome copper/molybdenum and be difficult to a compound processing difficult problem; And the technological parameter through controlled rolling; Avoided compound interface cracking and molybdenum itself that situation about rupturing takes place, for mass production copper/molybdenum/copper layered composite metal material provides strong technical support.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of copper/molybdenum/copper layered composite metal preparation methods is characterized in that this method may further comprise the steps:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin one and copper coin two; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate, copper coin one, copper coin two and the molybdenum plate after polishing is handled treat that composite surface is clean with alcohol wipe;
Step 2, the molybdenum plate of wiped clean in the step 1 is placed on the rigid foundation; Clearance material one evenly is set above molybdenum plate then; Again copper coin one is placed clearance material one top, and keep copper coin one treat composite surface down, at last explosive is layed in copper coin one top; It is compound through cap sensitive explosive molybdenum plate and copper coin one to be exploded, and obtains composite plate; The quantity of said clearance material one is no less than two;
Step 3, annealing in process 0.1h～3h under 500 ℃～950 ℃ the condition with composite plate described in the step 2 in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process in the step 3; And keep molybdenum plate last, and a plurality of clearance materials two evenly are set above composite plate then, again copper coin two is placed clearance material two tops; And keep copper coin two treat that composite surface down; At last explosive is layed in copper coin two tops, it is compound through cap sensitive explosive composite plate and copper coin two to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The quantity of said clearance material two is no less than two;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 500 ℃～780 ℃ hot rolling 3～8 passages, pass deformation rate is not more than 30%;
Step 6, with being annealing in process 0.1h～3h under 500 ℃～950 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum/copper layered composite metal material after the stove cooling.
The material of clearance material one described in the above-mentioned steps two is identical with copper coin one, and the height of clearance material one is 1mm～5mm.
Above-mentioned steps two is ammonium nitrate-fuel oil mixture with explosive described in the step 4, and the laying density of explosive is 0.5g/cm 3～1.0g/cm 3, the laying of explosive highly is 15mm～40mm, and explosion velocity of explosive is 1500m/s～3000m/s.
The time of annealing in process described in the above-mentioned steps three is 0.5h～1h.
The material of clearance material two described in the above-mentioned steps five is identical with copper coin two, and the height of clearance material two is 1mm～5mm.
Described in the above-mentioned steps five in the course of hot rolling every time rolling temperature be not less than 500 ℃.
Pass deformation rate is not more than 10% described in the above-mentioned steps five.
The total deformation rate of hot rolling described in the above-mentioned steps five is 40%～85%.
The time of annealing in process described in the above-mentioned steps six is 0.5h～1h.
The present invention compared with prior art has the following advantages:
1, the inventive method is simple, and not high to equipment requirements, production cost is low, realizes easily producing in batches, has production application preferably and is worth.
2, the present invention is through being provided with rational gap; Select suitable explosive property and explosive laying density and lay height; On rigid foundation, adopt the blast complex technique to realize the compound of copper/molybdenum; Overcome copper/molybdenum and be difficult to a compound processing difficult problem, and the technological parameter through controlled rolling, avoided compound interface cracking and molybdenum itself that situation about rupturing takes place; Guaranteed that the layered composite metal material interface has certain bond strength, for mass production copper/molybdenum/copper layered composite metal material provides strong technical support.
3, copper plate thickness reduces about 70%～85% in the blast recombination process of the present invention; Molybdenum plate thickness reduces about 60%～75%; Can design each layer thickness of copper/molybdenum/copper layered composite metal material according to instructions for use; And the blanking thickness of definite copper coin, molybdenum plate, preparation has the copper/molybdenum/copper layered composite metal material of different thermoelectricity capabilities.
4, adopting the density of the copper/molybdenum/copper layered composite metal material of method preparation of the present invention is 9.15g/cm 3～9.8g/cm 3, coefficient of thermal expansion is 6.8 * 10 -6K -1～10.0 * 10 -6K -1, the plane thermal conductivity is 190W/mK～320W/mK.
Below in conjunction with accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description.
Description of drawings
Fig. 1 is the embodiment of the invention 1 molybdenum plate and the compound structural representation of copper coin one blast.
Fig. 2 is the embodiment of the invention 1 composite plate and the compound structural representation of copper coin two blasts.
Description of reference numerals:
1-copper coin one; The 2-molybdenum plate; 3-copper coin two;
4-clearance material one; 5-clearance material two; The 6-composite plate.
The specific embodiment
Embodiment 1
Thickness is the preparation of copper/molybdenum/copper layered composite metal material of 0.3mm: 0.5mm: 0.3mm:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin 1 and copper coin 23; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate 2, copper coin 1, copper coin 23 and the molybdenum plate 2 after polishing is handled treat that composite surface is clean with alcohol wipe; Said copper coin 1 is T2 with copper coin 23 trades mark, and specification is 2mm * 110mm * 180mm, and the trade mark of said molybdenum plate 2 is Mo1, and specification is 2mm * 100mm * 150mm;
Step 2, as shown in Figure 1; The molybdenum plate 2 of wiped clean in the step 1 is placed on the rigid foundation; The clearance material 1 that above molybdenum plate 2,2 height to be set evenly then be 5mm places clearance material one 4 tops with copper coin 1 again, and keep copper coin 1 treat that composite surface down; At last ammonium nitrate-fuel oil mixture is layed in copper coin one 1 tops, the laying density of explosive is 0.5g/cm 3, the laying of explosive highly is 40mm, and explosion velocity of explosive is 1500m/s, and it is compound through cap sensitive explosive molybdenum plate 2 and copper coin 1 to be exploded, and obtains composite plate 6; The material of said clearance material 1 is identical with copper coin 1;
Step 3, annealing in process 0.1h under 950 ℃ the condition with composite plate described in the step 26 in temperature;
Step 4, as shown in Figure 2; With placing on the rigid foundation through the composite plate after the annealing in process 6 in the step 3, and keep molybdenum plate, the clearance material 25 that above composite plate 6,3 height to be set evenly then be 5mm last; Again copper coin 23 is placed clearance material 25 tops; And keep copper coin 23 treat composite surface down, at last ammonium nitrate-fuel oil mixture is layed in copper coin 23 tops, the laying density of explosive is 0.5g/cm 3, the laying of explosive highly is 40mm, and explosion velocity of explosive is 1500m/s, and it is compound through cap sensitive explosive composite plate 6 and copper coin 23 to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The material of said clearance material 25 is identical with copper coin 23;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 780 ℃ of hot rolling 8 passages, pass deformation rate is 10%, total deformation rate is 80%; Add every time rolling temperature of thermal control through tempering in the course of hot rolling and be not less than 500 ℃;
Step 6, with being annealing in process 0.1h under 950 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum that thickness is 0.3mm: 0.5mm: 0.3mm/copper layered composite metal material after the stove cooling.
The density of the copper/molybdenum/copper layered composite metal material of present embodiment preparation is 9.4g/cm 3～9.6g/cm 3, coefficient of thermal expansion is 8.5 * 10 -6K -1～8.9 * 10 -6K -1, the plane thermal conductivity is 250W/mK～280W/mK.
Embodiment 2
Thickness is the preparation of copper/molybdenum/copper layered composite metal material of 0.2mm: 0.7mm: 0.2mm:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin 1 and copper coin 23; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate 2, copper coin 1, copper coin 23 and the molybdenum plate 2 after polishing is handled treat that composite surface is clean with alcohol wipe; The trade mark of said copper coin 1 and copper coin 23 is T2, and specification is 2mm * 160mm * 230mm, and the trade mark of said molybdenum plate 2 is Mo1, and specification is 3mm * 150mm * 200mm;
Step 2, the molybdenum plate 2 of wiped clean in the step 1 is placed on the rigid foundation; The clearance material 1 that above molybdenum plate 2,3 height to be set evenly then be 1mm; Again copper coin 1 is placed clearance material one 4 tops; And keep copper coin 1 treat composite surface down, at last ammonium nitrate-fuel oil mixture is layed in copper coin one 1 tops, the laying density of explosive is 1.0g/cm 3, the laying of explosive highly is 15mm, and explosion velocity of explosive is 3000m/s, and it is compound through cap sensitive explosive molybdenum plate 2 and copper coin 1 to be exploded, and obtains composite plate 6; The material of said clearance material 1 is identical with copper coin 1;
Step 3, annealing in process 3h under 500 ℃ the condition with composite plate described in the step 26 in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process 6 in the step 3; And keep molybdenum plate last; The clearance material 25 that above composite plate 6,2 height to be set evenly then be 1mm places clearance material 25 tops with copper coin 23 again, and keep copper coin 23 treat that composite surface down; At last ammonium nitrate-fuel oil mixture is layed in copper coin 23 tops, the laying density of explosive is 1.0g/cm 3, the laying of explosive highly is 15mm, and explosion velocity of explosive is 3000m/s, and it is compound through cap sensitive explosive composite plate 6 and copper coin 23 to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The material of said clearance material 25 is identical with copper coin 23;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 500 ℃ of hot rolling 5 passages, pass deformation rate is 17%, total deformation rate is 85%; Add every time rolling temperature of thermal control through tempering in the course of hot rolling and be not less than 500 ℃;
Step 6, with being annealing in process 3h under 500 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum that thickness is 0.2mm: 0.7mm: 0.2mm/copper layered composite metal material after the stove cooling.
The density of the copper/molybdenum/copper layered composite metal material of present embodiment preparation is 9.65g/cm 3～9.8g/cm 3, coefficient of thermal expansion is 6.8 * 10 -6K -1～7.2 * 10 -6K -1, the plane thermal conductivity is 190W/mK～220W/mK.
Embodiment 3
Thickness is the preparation of copper/molybdenum/copper layered composite metal material of 0.3mm: 0.2mm: 0.3mm:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin 1 and copper coin 23; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate 2, copper coin 1, copper coin 23 and the molybdenum plate 2 after polishing is handled treat that composite surface is clean with alcohol wipe; The trade mark of said copper coin 1 and copper coin 23 is T2, and specification is 1mm * 110mm * 180mm, and the trade mark of molybdenum plate 2 is Mo1, and specification is 0.5mm * 100mm * 150mm;
Step 2, the molybdenum plate 2 of wiped clean in the step 1 is placed on the rigid foundation; The clearance material 1 that above molybdenum plate 2,4 height to be set evenly then be 3mm; Again copper coin 1 is placed clearance material one 4 tops; And keep copper coin 1 treat composite surface down, at last ammonium nitrate-fuel oil mixture is layed in copper coin one 1 tops, the laying density of explosive is 0.8g/cm 3, the laying of explosive highly is 30mm, and explosion velocity of explosive is 2200m/s, and it is compound through cap sensitive explosive molybdenum plate 2 and copper coin 1 to be exploded, and obtains composite plate 6; The material of said clearance material 1 is identical with copper coin 1;
Step 3, annealing in process 0.5h under 800 ℃ the condition with composite plate described in the step 26 in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process 6 in the step 3; And keep molybdenum plate last; The clearance material 25 that above composite plate 6,4 height to be set evenly then be 2mm places clearance material 25 tops with copper coin 23 again, and keep copper coin 23 treat that composite surface down; At last ammonium nitrate-fuel oil mixture is layed in copper coin 23 tops, the laying density of explosive is 0.8g/cm 3, the laying of explosive highly is 30mm, and explosion velocity of explosive is 2200m/s, and it is compound through cap sensitive explosive composite plate 6 and copper coin 23 to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The material of said clearance material 25 is identical with copper coin 23;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 780 ℃ of hot rolling 3 passages, pass deformation rate is respectively 30%, 30% and 8%, total deformation rate is 68%; Add every time rolling temperature of thermal control through tempering in the course of hot rolling and be not less than 500 ℃;
Step 6, with being annealing in process 0.5h under 700 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum that thickness is 0.3mm: 0.2mm: 0.3mm/copper layered composite metal material after the stove cooling.
The density of the copper/molybdenum/copper layered composite metal material of present embodiment preparation is 9.15g/cm 3～9.35g/cm 3, coefficient of thermal expansion is 9.6 * 10 -6K -1～10 * 10 -6K -1, the plane thermal conductivity is 290W/mK～320W/mK.
Embodiment 4
Thickness is the preparation of copper/molybdenum/copper layered composite metal material of 0.3mm: 0.4mm: 0.3mm:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin 1 and copper coin 23; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate 2, copper coin 1, copper coin 23 and the molybdenum plate 2 after polishing is handled treat that composite surface is clean with alcohol wipe; The trade mark of said copper coin 1 and copper coin 23 is T2, and specification is 0.6mm * 110mm * 180mm, and the trade mark of molybdenum plate 2 is Mo1, and specification is 0.5mm * 100mm * 150mm;
Step 2, the molybdenum plate 2 of wiped clean in the step 1 is placed on the rigid foundation; The clearance material 1 that above molybdenum plate 2,5 height to be set evenly then be 2mm; Again copper coin 1 is placed clearance material one 4 tops; And keep copper coin 1 treat composite surface down, at last ammonium nitrate-fuel oil mixture is layed in copper coin one 1 tops, the laying density of explosive is 0.6g/cm 3, the laying of explosive highly is 35mm, and explosion velocity of explosive is 2000m/s, and it is compound through cap sensitive explosive molybdenum plate 2 and copper coin 1 to be exploded, and obtains composite plate 6; The material of said clearance material 1 is identical with copper coin 1;
Step 3, annealing in process 1h under 600 ℃ the condition with composite plate described in the step 26 in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process 6 in the step 3; And keep molybdenum plate last; The clearance material 25 that above composite plate 6,5 height to be set evenly then be 2mm places clearance material 25 tops with copper coin 23 again, and keep copper coin 23 treat that composite surface down; At last ammonium nitrate-fuel oil mixture is layed in copper coin 23 tops, the laying density of explosive is 0.6g/cm 3, the laying of explosive highly is 35mm, and explosion velocity of explosive is 2000m/s, and it is compound through cap sensitive explosive composite plate 6 and copper coin 23 to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The material of said clearance material 25 is identical with copper coin 23;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 780 ℃ of hot rolling 4 passages, pass deformation rate is 10%, total deformation rate is 40%; Add every time rolling temperature of thermal control through tempering in the course of hot rolling and be not less than 500 ℃;
Step 6, with being annealing in process 1h under 600 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum that thickness is 0.3mm: 0.4mm: 0.3mm/copper layered composite metal material after the stove cooling.
The density of the copper/molybdenum/copper layered composite metal material of present embodiment preparation is 9.25g/cm 3～9.4g/cm 3, coefficient of thermal expansion is 8.9 * 10 -6K -1～9.2 * 10 -6K -1, the plane thermal conductivity is 270W/mK～290W/mK.
Embodiment 5
Thickness is the preparation of copper/molybdenum/copper layered composite metal material of 0.4mm: 0.4mm: 0.4mm:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin 1 and copper coin 23; With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate 2, copper coin 1, copper coin 23 and the molybdenum plate 2 after polishing is handled treat that composite surface is clean with alcohol wipe; The trade mark of said copper coin 1 and copper coin 23 is T2, and specification is 0.8mm * 110mm * 180mm, and the trade mark of molybdenum plate 2 is Mo1, and specification is 0.5mm * 100mm * 150mm;
Step 2, the molybdenum plate 2 of wiped clean in the step 1 is placed on the rigid foundation; The clearance material 1 that above molybdenum plate 2,5 height to be set evenly then be 4mm; Again copper coin 1 is placed clearance material one 4 tops; And keep copper coin 1 treat composite surface down, at last ammonium nitrate-fuel oil mixture is layed in copper coin one 1 tops, the laying density of explosive is 0.8g/cm 3, the laying of explosive highly is 25mm, and explosion velocity of explosive is 2000m/s, and it is compound through cap sensitive explosive molybdenum plate 2 and copper coin 1 to be exploded, and obtains composite plate 6; The material of said clearance material 1 is identical with copper coin 1;
Step 3, annealing in process 0.8h under 700 ℃ the condition with composite plate described in the step 26 in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process 6 in the step 3; And keep molybdenum plate last; The clearance material 25 that above composite plate 6,5 height to be set evenly then be 3mm places clearance material 25 tops with copper coin 23 again, and keep copper coin 23 treat that composite surface down; At last ammonium nitrate-fuel oil mixture is layed in copper coin 23 tops, the laying density of explosive is 0.8g/cm 3, the laying of explosive highly is 25mm, and explosion velocity of explosive is 2000m/s, and it is compound through cap sensitive explosive composite plate 6 and copper coin 23 to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The material of said clearance material 25 is identical with copper coin 23;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 700 ℃ of hot rolling 6 passages, pass deformation rate is 8%, total deformation rate is 48%; Add every time rolling temperature of thermal control through tempering in the course of hot rolling and be not less than 500 ℃;
Step 6, with being annealing in process 0.8h under 650 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum that thickness is 0.4mm: 0.4mm: 0.4mm/copper layered composite metal material after the stove cooling.
The density of the copper/molybdenum/copper layered composite metal material of present embodiment preparation is 9.35g/cm 3～9.5g/cm 3, coefficient of thermal expansion is 6.9 * 10 -6K -1～7.4 * 10 -6K -1, the plane thermal conductivity is 220W/mK～250W/mK.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every according to inventing technical spirit to any simple modification, change and equivalent structure variation that above embodiment did, all still belong in the protection domain of technical scheme of the present invention.

Claims (9)

1. copper/molybdenum/copper layered composite metal preparation methods is characterized in that this method may further comprise the steps:
Step 1, treating that composite surface polishes to handle to surface roughness with sand paper and be not more than 1.6 μ m with copper coin one (1) and copper coin two (3); With the treating that composite surface polishes to handle to surface roughness with emery wheel and be not more than 1.6 μ m of molybdenum plate (2), copper coin one (1), copper coin two (3) and the molybdenum plate (2) after polishing is handled treat that composite surface is clean with alcohol wipe;
Step 2, the molybdenum plate (2) of wiped clean in the step 1 is placed on the rigid foundation; In molybdenum plate (2) top clearance material one (4) is set evenly then; Again copper coin one (1) is placed clearance material one (4) top, and keep copper coin one (1) treat composite surface down, at last explosive is layed in copper coin one (1) top; It is compound through cap sensitive explosive molybdenum plate (2) and copper coin one (1) to be exploded, and obtains composite plate (6); The quantity of said clearance material one (4) is no less than two;
Step 3, annealing in process 0.1h～3h under 500 ℃～950 ℃ the condition with composite plate described in the step 2 (6) in temperature;
Step 4, with placing on the rigid foundation through the composite plate after the annealing in process (6) in the step 3; And keep molybdenum plate last, and in composite plate (6) top clearance material two (5) is set evenly then, again copper coin two (3) is placed clearance material two (5) tops; And keep copper coin two (3) treat that composite surface down; At last explosive is layed in copper coin two (3) top, it is compound through cap sensitive explosive composite plate (6) and copper coin two (3) to be exploded, and obtains copper/molybdenum/copper composite plate blanks; The quantity of said clearance material two (5) is no less than two;
Step 5, with copper/molybdenum described in the step 4/copper composite plate blanks in 500 ℃～780 ℃ hot rolling 3～8 passages, pass deformation rate is not more than 30%;
Step 6, with being annealing in process 0.1h～3h under 500 ℃～950 ℃ the condition in temperature through the copper/molybdenum after the hot rolling/copper composite plate blanks in the step 5, with obtaining copper/molybdenum/copper layered composite metal material after the stove cooling.
2. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that the material of clearance material described in the step 2 one (4) is identical with copper coin one (1), the height of clearance material one (4) is 1mm～5mm.
3. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that explosive is ammonium nitrate-fuel oil mixture described in step 2 and the step 4, the laying density of explosive is 0.5g/cm 3～1.0g/cm 3, the laying of explosive highly is 15mm～40mm, and explosion velocity of explosive is 1500m/s～3000m/s.
4. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that the time of annealing in process described in the step 3 is 0.5h～1h.
5. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that the material of clearance material described in the step 5 two (5) is identical with copper coin two (3), the height of clearance material two (5) is 1mm～5mm.
6. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that, described in the step 5 in the course of hot rolling every time rolling temperature be not less than 500 ℃.
7. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that pass deformation rate is not more than 10% described in the step 5.
8. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that the total deformation rate of hot rolling described in the step 5 is 40%～85%.
9. according to claim 1 described a kind of copper/molybdenum/copper layered composite metal preparation methods, it is characterized in that the time of annealing in process described in the step 6 is 0.5h～1h.
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CN104741765A (en) * 2015-03-10 2015-07-01 北京理工大学 Method for preparing high-bonding-strength pure-molybdenum composite board through hot explosive welding
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CN113600999A (en) * 2021-08-17 2021-11-05 合肥工业大学 Explosive welding forming method for Mo/Cu composite board
CN113600999B (en) * 2021-08-17 2022-09-30 合肥工业大学 Explosive welding forming method for Mo/Cu composite board

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