CN102260803A - Nano TiC0.5 particle in situ reinforced Cu(Al) composite material and preparation method thereof - Google Patents

Nano TiC0.5 particle in situ reinforced Cu(Al) composite material and preparation method thereof Download PDF

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CN102260803A
CN102260803A CN2011101981839A CN201110198183A CN102260803A CN 102260803 A CN102260803 A CN 102260803A CN 2011101981839 A CN2011101981839 A CN 2011101981839A CN 201110198183 A CN201110198183 A CN 201110198183A CN 102260803 A CN102260803 A CN 102260803A
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situ reinforced
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matrix material
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CN102260803B (en
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翟洪祥
黄振莺
李萌启
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Beijing Jiaotong University
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Abstract

The invention provides a nano TiC0.5 particle in situ reinforced Cu(Al) composite material and a preparation method thereof. The material comprises the following chemical components by weight percent: 0.37-25.22wt% of TiC0.5, 68.46-99.54 wt% of Cu and 0.09-6.32wt% of Al. The preparation method of the material comprises the following steps: proportionally burdening Ti2AlC powder and pure copper powder, wherein the proportion of Ti2AlC is 0.46-31.54wt%, and the proportion of Cu is 68.46-99.54wt%; carrying out ball milling and mixing materials, drying, and carrying out cold pressing and formation at the pressure of 140-180MPa; and carrying out constant pressure sintering at the temperature of 1100-1180 DEG C, protecting with argon, and insulating for 20-30 minutes so as to obtain the nano TiC0.5 particle in situ reinforced Cu(Al) composite material. With high compression strength, large deformation rate and high conductivity, the material can be widely used for preparing key devices of mechanical, electric, chemical and carrying tools.

Description

A kind of nano TiC<sub〉0.5</sub〉particle in-situ Reinforced Cu (Al) matrix material and preparation method thereof
Technical field
The present invention relates to a kind of nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material and preparation method thereof.
Background technology
Strengthen the matrix material that copper or copper alloy are formed by one or more ceramic phases, the satisfactory electrical conductivity of existing copper and thermal conductivity, high intensity and toughness, the characteristic such as high temperature resistant, corrosion-resistant, wear-resistant that has pottery again, have been widely used in fields such as electrician, chemical industry, traffic, machineries, be widely applied to fields such as electrical contact, electric switch, heat exchanger.Yet the interface wet ability between copper and the most of pottery is relatively poor, makes that the preparation of ceramic Reinforced Cu-Base Composites is relatively more difficult.
In recent years, nano particle strengthens Cu-base composites, makes it reach excellent mechanics, tribological property, causes extensive concern.Yet, the wild phase particle directly is added to traditional preparation process method in the copper matrix, the wild phase particle often can not be dispersed in the copper matrix, and cost is higher.Therefore, can have strong interface to combine, have the nano particle reinforced effects again with copper, and the material of preparation process economy be investigators pursue always.
In recent years, ternary layered ceramic material Ti 2AlC has been subjected to Materials science worker's extensive attention.It has the advantage of metal and pottery concurrently, and like metal equally has good electroconductibility and thermal conductivity, and softer relatively, anti-thermal shock show as plasticity under the high temperature; As pottery, good oxidation-resistance is arranged, corrosion-resistant, high temperature can keep higher intensity down.Ti 2The crystalline structure of AlC is measured by Jeitschko and Nowotny the earliest, and its crystalline structure is a hexagonal system, and spacer is P63/mmc, and lattice parameter is a=0.307nm, and c=1.769nm, theoretical density are 4.11g/cm 3Closelypacked Ti octahedral layer is separated by a plane layer Al atom, the octahedra center of Ti is a carbon atom, and every two-layer one deck Al atomic shell that just has, form octahedra between transition metal atoms Ti and the C atom, the C atom is positioned at octahedral center, is combined into strong covalent bond between Ti atom and the C atom; And be weak combination between Ti atom and the Al family plane, therefore, perpendicular to the c axle the layer with layer between under the effect of shearing stress, slide easily.(reference: Jeitschko W, Nowotny H et al.Monatash Chem.1963,94:672).So special structure is expected the investigator, if Ti 2AlC and Cu are compound, because the strong molten power of Cu and Al is probably destroyed Ti 2More weak bonded Al atomic shell among the AlC makes its stripping and enters in the Cu solution.Like this, Ti 2The AlC particle will be decomposed and form ultra-fine grain Reinforced Cu sill, this also just the investigator to pursue.
Summary of the invention
The object of the present invention is to provide a kind of with Ti 2AlC powder and pure copper powder are the nano TiC that raw material is made 0.5Particle in-situ Reinforced Cu (Al) matrix material and preparation method thereof.Technology to be solved by this invention asks and is, existing ceramic particle is with a little less than the interface of copper combines, the problem that particle scale is big.
Technical scheme of the present invention:
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material, its composition is as follows:
TiC 0.5 0.37~25.22wt%,
Cu 68.46~99.54wt%,
Al 0.09~6.32wt%。
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material, its microstructure is as follows:
The Ti of raw material 2The AlC particle breakdown, the Al stripping enters among the Cu, forms Cu (Al) alloy.Ti 2AlC is decomposed to form the TiC of 50~150nm 0.5Particle, evenly Reinforced Cu (Al) alloy composite materials.
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material, its mechanical property and electric property are as follows:
Incompressible intensity: 170~860MPa,
The maximum distortion rate: 8~37%,
Specific conductivity: 9~62%IACS.
Nano TiC of the present invention 0.5The preparation method of particle in-situ Reinforced Cu (Al) matrix material comprises following each step:
The step 1 batching
With Ti 2AlC powder and fine copper (Cu) powder is prepared burden in following ratio:
Ti 2AlC 0.46~31.54wt.%,
Cu 68.46~99.54wt.%;
The step 2 batch mixing
Add 70~120 milliliters the dehydrated alcohol and the agate ball of 200~400 grams in the above-mentioned batching of per 100 grams, ball milling 2~4 hours, 60~70 ℃ of oven dry in baking oven with the mixing raw material grinding of oven dry, are crossed 80~200 mesh sieves;
Step 3 coldmoulding
Raw material behind the above-mentioned batch mixing is pressed into the base substrate of Any shape under 140~180MPa pressure;
The step 4 sintering
The base substrate of above-mentioned coldmoulding is put into High Temperature Furnaces Heating Apparatus, and under argon shield, the temperature rise rate by 10~40 ℃/min rises to 1100~1180 ℃ with furnace temperature, insulation 20~30min, and the speed cooling with 10~15 ℃/min promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material.
The beneficial effect that the present invention had:
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material, its intensity and specific conductivity are much higher than monophasic Ti 2The AlC material also is higher than common Cu alloy material.Its intensity, maximum distortion rate and specific conductivity are according to Ti 2The proportioning raw materials of AlC and copper and different; Ti 2The big more made nano TiC of the ratio of AlC 0.5The incompressible intensity of particle in-situ Reinforced Cu (Al) matrix material is big more and maximum distortion rate and specific conductivity are more little.For nano TiC of the present invention 0.5The application of particle in-situ Reinforced Cu (Al) matrix material can be chosen suitable Ti according to the service requirements of reality 2The proportioning raw materials of AlC and copper.
Nano TiC of the present invention 0.5The preparation method of particle in-situ Reinforced Cu (Al) matrix material, its main benefit be the prescription and preparation technology simple; By implementation step of the present invention, Ti in sintering process 2Al among the AlC is dissolved, Ti 2AlC decomposes, and laminate structure is destroyed, forms the TiC of 50~150nm 0.5The microstructure of Particles Reinforced Cu (Al) alloy, and this special in-situ nano particle enhancing mode makes prepared nano TiC 0.5And between Cu (Al) alloy good interface bond strength is arranged, this also is the fundamental cause that made matrix material has higher-strength, bigger deformation rate and higher specific conductivity.
The present invention and denomination of invention " a kind of Ti 3C 2/ Cu-Al metallic substance and preparation method thereof ", the patent No. is that the patent of invention of ZL200510012150.5 is compared, nano TiC of the present invention 0.5Its wild phase difference of particle in-situ Reinforced Cu (Al) matrix material, wild phase microstructure form difference.Wild phase TiC of the present invention 0.5And compare Ti between the Cu (Al) 3C 2And have better interface wet ability and interface bond strength between the Cu (Al), thereby have higher specific conductivity and compressive strength; Ti is compared in nano particle enhancing uniformly simultaneously 3C 2The long plate shape particle has bigger deformation rate in/Cu (Al) sintering metal.Therefore the present invention more is applicable to and needs higher-strength and specific conductivity, needs the field of moderate finite deformation rate simultaneously.
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material can be widely used in fields such as machinery, electrician, traffic, chemical industry, for example is used to make contact, slide block of various high performance rollers, ring header, resistance soldering tip, various high power switch or contactor etc.
Nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material sintering under normal pressure just can obtain, and is well suited for the suitability for industrialized production of the device of large-sized or complicated shape.
Description of drawings
Fig. 1 and Fig. 2 are different content nano TiCs of the present invention 0.5The microstructural scanning electronic microscope of particle in-situ Reinforced Cu (Al) matrix material (SEM) photo.
Embodiment
Embodiment one
The step 1 batching
Take by weighing purity and be 98.5% Ti 2AlC powder 0.74 gram, purity are 99.9% Cu powder 159.00 grams.
The step 2 batch mixing
With the batch mixes of step 1, add 110 milliliters of dehydrated alcohols and 320 gram agate balls, ball mill mixing 2 hours is with 60 ℃ of oven dry, the mixing raw material grinding with oven dry, mistake 100 mesh sieves.
Step 3 coldmoulding
The mixing raw material of step 2 under 140MPa pressure, is cold-pressed into the bar shaped base substrate.
The step 4 sintering
The bar shaped base substrate of step 3 preparation is put into the graphite jig of High Temperature Furnaces Heating Apparatus, under argon shield, be warming up to 1100 ℃ with the speed of 40 ℃/min, insulation 20min reduces to 60 ℃ with the speed of 10 ℃/min with furnace temperature, promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material; TiC wherein 0.5Content be about 0.59 gram, all the other are Cu and Al (Cu content is 159.00 grams, and Al content is about 0.15 gram).
With above-mentioned nano TiC 0.5 particle in-situ Reinforced Cu (Al) matrix material, be processed into the sample of Φ 10mm * 30mm, carry out incompressible strength test; The compressive strength that records is 173.30MPa, and the maximum distortion rate is 36.5%, and electric conductivity is 61.8%IACS.
Embodiment two
The step 1 batching
Take by weighing purity and be 99.0% Ti 2AlC powder 2.96 grams, purity are 99.9% Cu powder 25.64 grams.
The step 2 batch mixing
With the batch mixes of step 1, add 20 milliliters of dehydrated alcohols and 60 gram agate balls, ball mill mixing 2 hours is with 60 ℃ of oven dry, the mixing raw material grinding with oven dry, mistake 80 mesh sieves.
Step 3 coldmoulding
The mixing raw material of step 2 under 160MPa pressure, is cold-pressed into the bar shaped base substrate.
The step 4 sintering
The bar shaped base substrate of step 3 preparation is put into the graphite jig of High Temperature Furnaces Heating Apparatus, under argon shield, be warming up to 1130 ℃ with the speed of 30 ℃/min, insulation 20min reduces to 60 ℃ with the speed of 10 ℃/min with furnace temperature, promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material; TiC wherein 0.5Content be about 2.37 grams, all the other are Cu and Al (Cu content is 25.64 grams, and Al content is about 0.59 gram).
With above-mentioned nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material is processed into the sample of Φ 10mm * 30mm, carries out incompressible strength test; The compressive strength that records is 332.40MPa, and the maximum distortion rate is 28.6%, and specific conductivity is 47.1%IACS.
Embodiment three
The step 1 batching
Take by weighing purity and be 99.0% Ti 2AlC powder 4.44 grams, purity are 99.9% Cu powder 22.43 grams.
The step 2 batch mixing
With the batch mixes of step 1, add 20 milliliters of dehydrated alcohols and 60 gram agate balls, ball mill mixing 3 hours is with 70 ℃ of oven dry, the mixing raw material grinding with oven dry, mistake 110 mesh sieves.
Step 3 coldmoulding
The mixing raw material of step 2 under 160MPa pressure, is cold-pressed into the bar shaped base substrate.
The step 4 sintering
The bar shaped base substrate of step 3 preparation is put into the graphite jig of High Temperature Furnaces Heating Apparatus, under argon shield, be warming up to 1150 ℃ with the speed of 30 ℃/min, insulation 30min reduces to 60 ℃ with the speed of 15 ℃/min with furnace temperature, promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material; TiC wherein 0.5Content be about 3.55 grams, all the other are Cu and Al (Cu content is 22.43 grams, and Al content is about 0.89 gram).
With above-mentioned nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material is processed into the sample of Φ 10mm * 30mm, carries out incompressible strength test; The compressive strength that records is 587.65MPa, and the maximum distortion rate is 18.18%, and electric conductivity is 24.2%IACS.
Embodiment four
The step 1 batching
Take by weighing purity and be 99.2% Ti 2AlC powder 5.92 grams, purity are 99.9% Cu powder 19.22 grams.
The step 2 batch mixing
With the batch mixes of step 1, add 30 milliliters of dehydrated alcohols and 100 gram agate balls, ball mill mixing 3 hours is with 70 ℃ of oven dry, the mixing raw material grinding with oven dry, mistake 180 mesh sieves.
Step 3 coldmoulding
The mixing raw material of step 2 under 180MPa pressure, is cold-pressed into the bar shaped base substrate.
The step 4 sintering
The bar shaped base substrate of step 3 preparation is put into the graphite jig of High Temperature Furnaces Heating Apparatus, under argon shield, be warming up to 1160 ℃ with the speed of 30 ℃/min, insulation 30min reduces to 60 ℃ with the speed of 15 ℃/min with furnace temperature, promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material; TiC wherein 0.5Content be about 4.73 grams, all the other are Cu and Al (Cu content is 19.22 grams, and Al content is about 1.19 grams).
With above-mentioned nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material is processed into the sample of Φ 10mm * 30mm, carries out incompressible strength test; The compressive strength that records is 773.85MPa, and the maximum distortion rate is 8.62%, and electric conductivity is 12.1%IACS.
Embodiment five
The step 1 batching
Take by weighing purity and be 99.2% Ti 2AlC powder 7.57 grams, purity are 99.9% Cu powder 16.43 grams.
The step 2 batch mixing
With the batch mixes of step 1, add 20 milliliters of dehydrated alcohols and 60 gram agate balls, ball mill mixing 4 hours is with 70 ℃ of oven dry, the mixing raw material grinding with oven dry, mistake 200 mesh sieves.
Step 3 coldmoulding
The mixing raw material of step 2 under 180MPa pressure, is cold-pressed into the bar shaped base substrate.
The step 4 sintering
The bar shaped base substrate of step 3 preparation is put into the graphite jig of High Temperature Furnaces Heating Apparatus, under argon shield, be warming up to 1180 ℃ with the speed of 30 ℃/min, insulation 30min reduces to 60 ℃ with the speed of 15 ℃/min with furnace temperature, promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material; TiC wherein 0.5Content be about 6.05 grams, all the other are Cu and Al (Cu content is 16.43 grams, and Al content is about 1.52 grams).
With above-mentioned nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material is processed into the sample of Φ 10mm * 30mm, carries out incompressible strength test; The compressive strength that records is 859.67MPa, and the maximum distortion rate is 4.73%, and electric conductivity is 9.8%IACS.

Claims (2)

1. nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material is characterized in that its composition is as follows:
TiC 0.5 0.37~25.22wt%,
Cu 68.46~99.54wt%,
Al 0.09~6.32wt%,
Nano TiC 0.5Particle in-situ Reinforced Cu (Al) matrix material, its microstructure is as follows:
The Ti of raw material 2The AlC particle breakdown, the Al stripping enters among the Cu, forms Cu (Al) alloy; Ti 2AlC is decomposed to form the TiC of 50~150nm 0.5Particle, evenly Reinforced Cu (Al) alloy composite materials.
2. nano TiC 0.5The preparation method of particle in-situ Reinforced Cu (Al) matrix material is characterized in that this method may further comprise the steps:
The step 1 batching
With Ti 2AlC powder and pure copper powder are prepared burden in following ratio:
Ti 2AlC 0.46~31.54wt.%,
Cu 68.46~99.54wt.%;
The step 2 batch mixing
Add 70~120 milliliters the dehydrated alcohol and the agate ball of 200~400 grams in the above-mentioned batching of per 100 grams, ball milling 2~4 hours, 60~70 ℃ of oven dry in baking oven with the mixing raw material grinding of oven dry, are crossed 80~200 mesh sieves;
Step 3 coldmoulding
Raw material behind the above-mentioned batch mixing is pressed into the base substrate of Any shape under 140~180MPa pressure;
The step 4 sintering
The base substrate of above-mentioned coldmoulding is put into High Temperature Furnaces Heating Apparatus, and under argon shield, the temperature rise rate by 10~40 ℃/min rises to 1100~1180 ℃ with furnace temperature, insulation 20~30min, and the speed cooling with 10~15 ℃/min promptly obtains nano TiC of the present invention 0.5Particle in-situ Reinforced Cu (Al) matrix material.
CN201110198183.9A 2011-07-15 2011-07-15 Nano TiC0.5 particle in situ reinforced Cu(Al) composite material and preparation method thereof Expired - Fee Related CN102260803B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107217187A (en) * 2017-06-09 2017-09-29 北京交通大学 A kind of TiCxThe preparation method of/Cu co-continuous cermet materials
CN108793166A (en) * 2018-07-10 2018-11-13 中国科学院宁波材料技术与工程研究所 Composite material, its preparation method and the application of the compound MXenes of B metal
CN109355528A (en) * 2018-12-18 2019-02-19 江西理工大学 A kind of TiCx-Al2O3/Cu based composites and its preparation method and application
CN113481399A (en) * 2021-07-05 2021-10-08 北京交通大学 With Ti2In-situ TiC generation by using AlC as precursorxReinforced titanium-based composite material and preparation method thereof
CN114182098A (en) * 2016-11-02 2022-03-15 洛阳铜一金属材料发展有限公司 Separation method of copper-aluminum composite material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1733955A (en) * 2005-07-12 2006-02-15 北京交通大学 Ti3C2/Cu-Al ceramet material and its preparation method

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1733955A (en) * 2005-07-12 2006-02-15 北京交通大学 Ti3C2/Cu-Al ceramet material and its preparation method

Non-Patent Citations (1)

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Title
黄振莺等: "原位热压反应制备高性能亚微米层状Ti3C2/(Cu-Al)金属陶瓷", 《稀有金属材料与工程》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182098A (en) * 2016-11-02 2022-03-15 洛阳铜一金属材料发展有限公司 Separation method of copper-aluminum composite material
CN107217187A (en) * 2017-06-09 2017-09-29 北京交通大学 A kind of TiCxThe preparation method of/Cu co-continuous cermet materials
CN108793166A (en) * 2018-07-10 2018-11-13 中国科学院宁波材料技术与工程研究所 Composite material, its preparation method and the application of the compound MXenes of B metal
CN109355528A (en) * 2018-12-18 2019-02-19 江西理工大学 A kind of TiCx-Al2O3/Cu based composites and its preparation method and application
CN113481399A (en) * 2021-07-05 2021-10-08 北京交通大学 With Ti2In-situ TiC generation by using AlC as precursorxReinforced titanium-based composite material and preparation method thereof

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