CN100443619C - A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material - Google Patents
A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material Download PDFInfo
- Publication number
- CN100443619C CN100443619C CNB2006101047725A CN200610104772A CN100443619C CN 100443619 C CN100443619 C CN 100443619C CN B2006101047725 A CNB2006101047725 A CN B2006101047725A CN 200610104772 A CN200610104772 A CN 200610104772A CN 100443619 C CN100443619 C CN 100443619C
- Authority
- CN
- China
- Prior art keywords
- chromium
- powder
- copper
- preparation
- hours
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 239000010949 copper Substances 0.000 title claims abstract description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 30
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 25
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 16
- 239000006185 dispersion Substances 0.000 title claims abstract description 8
- 239000011651 chromium Substances 0.000 title claims description 27
- 238000002360 preparation method Methods 0.000 title claims description 17
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 title claims description 14
- 229910000423 chromium oxide Inorganic materials 0.000 title claims description 14
- 239000011159 matrix material Substances 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005245 sintering Methods 0.000 claims abstract description 11
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims abstract description 10
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229940112669 cuprous oxide Drugs 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 20
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 claims description 15
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001192 hot extrusion Methods 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- JGDFBJMWFLXCLJ-UHFFFAOYSA-N copper chromite Chemical group [Cu]=O.[Cu]=O.O=[Cr]O[Cr]=O JGDFBJMWFLXCLJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910017813 Cu—Cr Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 229910017767 Cu—Al Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910001175 oxide dispersion-strengthened alloy Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
技术领域 technical field
本发明属于金属基复合材料技术领域，涉及一种铜基复合材料的制备方法，具体涉及一种氧化铬和铬弥散强化铜基复合材料的制备方法。The invention belongs to the technical field of metal-based composite materials, and relates to a preparation method of copper-based composite materials, in particular to a preparation method of chromium oxide and chromium dispersion-strengthened copper-based composite materials.
背景技术 Background technique
空间材料、电子封装材料、连铸机结晶器材料等均是在高温下长期服役的结构材料，所以要求其高温下兼备高强度和高传导性能。Space materials, electronic packaging materials, continuous casting machine mold materials, etc. are all structural materials that serve for a long time at high temperatures, so they are required to have both high strength and high conductivity at high temperatures.
现在这类材料主要采用的是沉淀硬化型铜合金，该类铜合金强度高，导电、导热性好。At present, this kind of material mainly adopts precipitation hardening copper alloy, which has high strength, good electrical conductivity and thermal conductivity.
但是这些合金的弊端是，如果使用温度长期高于沉淀热处理的温度(铜熔点的1/3～1/2)，由于铜中合金元素不断向铜中溶解，致使铜合金的强度、导电导热性都将大幅度下降，导致仪器、设备的稳定性下降(如计算机死机)，使用寿命急剧降低。However, the disadvantage of these alloys is that if the use temperature is higher than the precipitation heat treatment temperature (1/3 to 1/2 of the melting point of copper) for a long time, the strength, electrical and thermal conductivity of the copper alloy will be reduced due to the continuous dissolution of the alloying elements in the copper into the copper. All will be greatly reduced, resulting in a decline in the stability of instruments and equipment (such as computer crashes), and a sharp reduction in service life.
氧化物弥散强化铜基复合材料以其优异的高温强度和高传导性而成为首选的替代材料。Oxide dispersion strengthened copper matrix composites have become the preferred alternative materials due to their excellent high temperature strength and high conductivity.
这类材料的研究目前主要集中在内氧化法制备Cu/Al2O3复合材料。在制备Cu/Al2O3复合材料的过程注意到，微量残存的未完全氧化的Al对复合材料的电导率影响很大，而Al的完全氧化对工艺的控制要求又较高。The research on this kind of materials is currently mainly focused on the preparation of Cu/Al 2 O 3 composite materials by internal oxidation method. In the process of preparing Cu/Al 2 O 3 composites, it is noted that the trace residual incompletely oxidized Al has a great influence on the electrical conductivity of the composites, and the complete oxidation of Al requires high process control.
发明内容 Contents of the invention
本发明的目的在于，提供一种氧化铬和铬弥散强化铜基复合材料的制备方法，以Cr代替Al在铜基体中进行原位氧化制备铜基复合材料，利用Cr在Cu中极低的固溶度，解决了未完全氧化的Al对材料电导率影响较大的问题。The object of the present invention is to provide a preparation method of chromium oxide and chromium dispersion-strengthened copper-based composite material. The copper-based composite material is prepared by in-situ oxidation in the copper matrix with Cr instead of Al, and the extremely low solid content of Cr in Cu is utilized. Solubility solves the problem that incompletely oxidized Al has a great influence on the conductivity of the material.
本发明所采用的技术方案是，一种氧化铬和铬弥散强化铜基复合材料的制备方法，包括以下步骤：The technical solution adopted in the present invention is a preparation method of chromium oxide and chromium dispersion strengthened copper-based composite material, comprising the following steps:
a.制备铜铬预合金粉末：a. Preparation of copper-chromium pre-alloyed powder:
将质量百分比为97％～99.5％的铜粉和0.5％～3％的铬粉放入高能球磨机中球磨5～8小时，球料比30～40∶1，制成铜铬预合金粉末；Putting 97% to 99.5% copper powder and 0.5% to 3% chromium powder in a high-energy ball mill for ball milling for 5 to 8 hours with a ball-to-material ratio of 30 to 40:1 to make copper-chromium pre-alloyed powder;
b.制备内氧化复合粉末：b. Preparation of internal oxidation composite powder:
在上述制得的铜铬预合金粉末中加入氧化亚铜粉，在高能球磨机中球磨2～3小时，球料比30～40∶1，制成复合粉末，所述氧化亚铜粉与所述铬粉的质量百分比之比为1.5∶1；Add cuprous oxide powder to the copper-chromium pre-alloyed powder prepared above, and ball mill in a high-energy ball mill for 2 to 3 hours with a ball-to-material ratio of 30 to 40:1 to make a composite powder. The cuprous oxide powder and the The mass percent ratio of chromium powder is 1.5:1;
c.压制：c. Repression:
将步骤b制得的复合粉末冷压成型，制成压坯；cold pressing the composite powder obtained in step b to make a green compact;
d.真空烧结和内氧化过程：d. Vacuum sintering and internal oxidation process:
将步骤c冷压成型的压坯放入真空炉中，抽真空，当真空度达到10-2～10-3Pa时，开始加热，加热速率为5～20℃/分钟，在900℃～1000℃时真空烧结1～3小时，测温方式采用直接测试试样表面温度；Put the compact formed by cold pressing in step c into a vacuum furnace, and vacuumize. When the vacuum degree reaches 10 -2 ~ 10 -3 Pa, start heating at a heating rate of 5 ~ 20°C/min, at 900°C ~ 1000 Vacuum sintering at ℃ for 1 to 3 hours, and the temperature measurement method is to directly test the surface temperature of the sample;
e.热挤压：e. Hot extrusion:
把步骤d烧结后的压坯在750℃时进行两次热挤压，挤压比分别为5∶1和10∶1，即制得按质量百分比组成为1％～6％的氧化铬，小于0.5％的铬，其余为铜的氧化铬和铬弥散强化铜基复合材料。Carry out hot extrusion twice at 750 DEG C to the green compact after step d sintering, and extrusion ratio is respectively 5:1 and 10:1, promptly makes the chromium oxide that is 1%～6% by mass percentage, is less than 0.5% chromium, the rest is copper chromium oxide and chromium dispersion strengthened copper matrix composites.
本发明的特点还在于：The present invention is also characterized in that:
上述步骤还包括步骤The above steps also include the steps
f.将上述步骤e热挤压后的压坯进行固溶处理和时效处理。f. Perform solution treatment and aging treatment on the green compact after hot extrusion in step e above.
固溶处理的温度控制为950℃，时间1小时。The temperature of solution treatment is controlled at 950° C. for 1 hour.
时效处理的温度控制为450℃，时间3小时。The temperature of the aging treatment was controlled at 450° C. for 3 hours.
本发明的优点在于：利用Cr在Cu中极低的固溶度，以Cr代替Al在铜基体中制备氧化铬弥散强化铜基复合材料，与Cu/Al2O3复合材料具有相近的稳定性，软化温度超过800K，电导率不低于70％IACS。与Cu/Al2O3相比，Cu/Cr2O3的制备工艺更加简单而利于控制，而且在制备过程中，即使在有少量的Cr不被氧化，单质Cr颗粒向Cu中的溶解过程是非常缓慢而且量是很少的，残存的Cr对电导率影响会很小，而且可以通过随后的热处理工艺进一步减少对电导率的影响，所以不必担心未氧化的Cr对复合材料性能的影响，相反，Cr与Cr2O3一起成为强化铜基体的粒子。本发明提供的制备方法与内氧化法相比，也具有工艺简单、成本低、便于控制的特点。The advantages of the present invention are: using the extremely low solid solubility of Cr in Cu, replacing Al with Cr to prepare chromium oxide dispersion-strengthened copper-based composite materials in the copper matrix, which has similar stability to Cu/Al 2 O 3 composite materials , the softening temperature exceeds 800K, and the electrical conductivity is not lower than 70% IACS. Compared with Cu/Al 2 O 3 , the preparation process of Cu/Cr 2 O 3 is simpler and easier to control, and in the preparation process, even if a small amount of Cr is not oxidized, the dissolution process of elemental Cr particles into Cu It is very slow and the amount is very small. The remaining Cr will have little influence on the electrical conductivity, and the influence on the electrical conductivity can be further reduced by the subsequent heat treatment process, so there is no need to worry about the influence of unoxidized Cr on the performance of the composite material. Instead, Cr together with Cr 2 O 3 becomes the particles that strengthen the copper matrix. Compared with the internal oxidation method, the preparation method provided by the invention also has the characteristics of simple process, low cost and easy control.
附图说明 Description of drawings
图1是本发明方法的流程示意图。Fig. 1 is a schematic flow chart of the method of the present invention.
具体实施方式 Detailed ways
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明氧化铬和铬弥散强化铜基复合材料的制备方法，与内氧化法相比，工艺简单，便于控制，成本较低，如附图所示，该方法包括以下步骤：Compared with the internal oxidation method, the preparation method of chromium oxide and chromium dispersion-strengthened copper-based composite material of the present invention has simple process, convenient control and low cost. As shown in the accompanying drawings, the method comprises the following steps:
a.制备铜铬预合金粉末a. Preparation of copper-chromium pre-alloyed powder
将质量百分比为97％～99.5％的铜粉和0.5％～3％的铬粉放入高能球磨机中球磨5～8小时，球磨过程不需保护气体，球料比为30～40∶1，控制球磨机转速为200～400转/分钟，制成铜铬预合金粉末；Put copper powder with a mass percentage of 97% to 99.5% and chromium powder with a mass percentage of 0.5% to 3% into a high-energy ball mill for ball milling for 5 to 8 hours. No protective gas is required during the ball milling process. The ball to material ratio is 30 to 40:1. The speed of the ball mill is 200-400 rpm to make copper-chromium pre-alloyed powder;
b.制备内氧化复合粉末b. Preparation of internal oxidation composite powder
在上述制得的铜铬预合金粉末中加入氧化亚铜粉，在高能球磨机中球磨2～3小时，氧化亚铜粉与铬粉的质量百分比之比为1.5∶1，球磨过程不需保护气体，控制球磨机转速为200～400转/分钟，球料比为30～40∶1，制成复合粉末；Add cuprous oxide powder to the copper-chromium pre-alloyed powder prepared above, and ball mill in a high-energy ball mill for 2 to 3 hours. The mass percentage ratio of cuprous oxide powder and chromium powder is 1.5:1, and no protective gas is needed during the ball milling process. , control the speed of the ball mill to 200-400 rpm, and the ball-to-material ratio to 30-40:1 to make composite powder;
c.压制c. to suppress
将上述制得的复合粉末冷压成型，制成压坯；Cold pressing the composite powder obtained above to make a green compact;
d.真空烧结和内氧化过程d. Vacuum sintering and internal oxidation process
将上述冷压成型的压坯放入真空炉中，抽真空，当真空度达到10-2～10-3Pa时，开始加热，加热速率为5～20℃/分钟。在900℃～1000℃时烧结1～3小时，测温方式采用直接测试样表面温度，控温过程采用自动控制；Put the above-mentioned cold-pressed compact into a vacuum furnace, and vacuumize it. When the vacuum degree reaches 10 -2 ~ 10 -3 Pa, start heating at a heating rate of 5 ~ 20°C/min. Sintering at 900°C-1000°C for 1-3 hours, the temperature measurement method adopts the direct test sample surface temperature, and the temperature control process adopts automatic control;
e.热挤压e. Hot extrusion
把上述烧结后的压坯在750℃时进行两次热挤压，挤压比分别控制为5∶1和10∶1，即制得氧化铬和铬弥散强化铜基复合材料。The above-mentioned sintered compact was hot-extruded twice at 750°C, and the extrusion ratio was controlled at 5:1 and 10:1, respectively, to obtain chromium oxide and chromium dispersion-strengthened copper-based composite materials.
还可以有步骤f.将上述热挤压后的压坯在950℃进行固溶处理1小时，在450℃进行时效处理3小时。There may also be step f. performing solution treatment at 950° C. for 1 hour and aging treatment at 450° C. for 3 hours to the hot-extruded compact.
将上述制备的复合材料通过浓硝酸腐蚀掉铜基体后经X射线衍射分析，该方法制备的复合材料中含有1％～6％的氧化铬，0～0.5％的铬。After the composite material prepared above is corroded by concentrated nitric acid to remove the copper matrix, it is analyzed by X-ray diffraction. The composite material prepared by this method contains 1%-6% of chromium oxide and 0-0.5% of chromium.
实施例1Example 1
将99.5g铜粉和0.5g铬粉在高能球磨机中球磨5小时，球料比40∶1，球磨机转速200转/分钟，制成铜铬预合金粉末；再加入0.75g的氧化亚铜粉与铜铬预合金粉末一起球磨2小时，球料比40∶1，球磨机转速200转/分钟，制成复合粉末；将球磨后的复合粉末冷压成型，制成压坯；然后将压坯放入真空炉中，测温热电偶直接测试试样表面温度，先抽真空到1.0×10-2Pa，采用10℃/分钟的升温速率升至400℃，采用15℃/分钟的升温速率升至900℃，在此温度下保温3小时，进行烧结和内氧化，在此过程中，控温通过仪表程序自动实现；然后将烧结后的压坯在750℃先进行5∶1挤压比的热挤压，然后再进行10∶1挤压比热挤压；将挤压后的压坯在950℃固溶处理1小时，然后在450℃时效3小时，即获得氧化铬和铬弥散强化铜基复合材料。99.5g of copper powder and 0.5g of chromium powder were ball milled in a high-energy ball mill for 5 hours, the ball-to-material ratio was 40:1, and the ball mill speed was 200 rpm to make copper-chromium pre-alloyed powder; then add 0.75g of cuprous oxide powder and The copper-chromium pre-alloyed powders are ball milled together for 2 hours, the ball-to-material ratio is 40:1, and the ball mill speed is 200 rpm to make a composite powder; the ball-milled composite powder is cold-pressed to make a compact; then the compact is put into In the vacuum furnace, the temperature measuring thermocouple directly measures the surface temperature of the sample. First, the vacuum is pumped to 1.0×10 -2 Pa, and the temperature is raised to 400°C at a rate of 10°C/min, and then raised to 900°C at a rate of 15°C/min. ℃, keep it at this temperature for 3 hours, carry out sintering and internal oxidation, during this process, the temperature control is automatically realized through the instrument program; then the sintered compact is firstly subjected to hot extrusion at 750 ℃ with an extrusion ratio of 5:1 and then carry out 10:1 extrusion specific heat extrusion; the extruded compact is solution treated at 950°C for 1 hour, and then aged at 450°C for 3 hours to obtain chromium oxide and chromium dispersion strengthened copper matrix composite Material.
实施例2Example 2
将97g铜粉和3g铬粉在高能球磨机中球磨8小时，球料比30∶1，球磨机转速400转/分钟，制成铜铬预合金粉末；再加入4.5g的氧化亚铜粉与铜铬预合金粉末一起球磨3小时，球料比30∶1，球磨机转速400转/分钟，制成复合粉末；将球磨后的复合粉末冷压成型，制成压坯；然后将压坯放入真空炉中，测温热电偶直接测试试样表面温度，先抽真空到0.1×10-2Pa，采用5℃/分钟的升温速率升至400℃，采用20℃/分钟的升温速率升至1000℃，在此温度下保温1小时，进行烧结和内氧化，在此过程中，控温通过仪表程序自动实现；然后将烧结后的压坯在750℃先进行5∶1挤压比的热挤压，然后再进行10∶1挤压比热挤压；将挤压后的压坯在950℃固溶处理1小时，然后在450℃时效3小时，即获得氧化铬和铬弥散强化铜基复合材料。97g of copper powder and 3g of chromium powder were ball milled in a high-energy ball mill for 8 hours, the ball-to-material ratio was 30:1, and the ball mill speed was 400 rpm to make copper-chromium pre-alloyed powder; then add 4.5g of cuprous oxide powder and copper-chromium The pre-alloyed powder is ball milled together for 3 hours, the ball-to-material ratio is 30:1, and the speed of the ball mill is 400 rpm to make a composite powder; the composite powder after ball milling is cold-pressed to make a compact; then the compact is put into a vacuum furnace In this method, the temperature measuring thermocouple directly measures the surface temperature of the sample. Firstly, the vacuum is pumped to 0.1×10 -2 Pa, and the temperature rises to 400°C at a rate of 5°C/min, and then to 1000°C at a rate of 20°C/min. At this temperature for 1 hour, sintering and internal oxidation are carried out. During this process, the temperature control is automatically realized through the instrument program; then the sintered green compact is firstly hot-extruded at 750°C with an extrusion ratio of 5:1. Then carry out 10:1 extrusion specific heat extrusion; the extruded compact is solution treated at 950°C for 1 hour, and then aged at 450°C for 3 hours to obtain chromium oxide and chromium dispersion strengthened copper matrix composite material.
实施例3Example 3
将98g铜粉和2g铬粉在高能球磨机中球磨5小时，球料比40∶1，球磨机转速300转/分钟，制成铜铬预合金粉末；再加入3g的氧化亚铜粉与铜铬预合金粉末一起球磨2.5小时，球料比35∶1，球磨机转速300转/分钟，制成复合粉末；将球磨后的复合粉末冷压成型，制成压坯；然后将压坯放入真空炉中，测温热电偶直接测试试样表面温度，先抽真空到0.6×10-2Pa，采用5℃/分钟的升温速率升至400℃，采用15℃/分钟的升温速率升至960℃，在此温度下保温1.5小时，在此过程中，控温通过仪表程序自动实现；然后将烧结后的压坯在750℃先进行5∶1挤压比的热挤压，然后再进行10∶1挤压比热挤压，即获得氧化铬和铬弥散强化铜基复合材料。98g of copper powder and 2g of chromium powder were ball milled in a high-energy ball mill for 5 hours, the ball-to-material ratio was 40:1, and the ball mill rotating speed was 300 rpm to make copper-chromium pre-alloyed powder; then add 3g of cuprous oxide powder and copper-chromium pre-alloyed powder The alloy powders are ball milled together for 2.5 hours, the ball-to-material ratio is 35:1, and the speed of the ball mill is 300 rpm to make a composite powder; the ball-milled composite powder is cold-pressed to make a compact; then the compact is put into a vacuum furnace , the temperature measuring thermocouple directly measures the surface temperature of the sample, first vacuumizes to 0.6×10 -2 Pa, uses a heating rate of 5°C/min to rise to 400°C, and uses a heating rate of 15°C/min to rise to 960°C. Keep warm at this temperature for 1.5 hours. During this process, the temperature control is automatically realized through the instrument program; then the sintered green compact is first subjected to hot extrusion at 750°C with an extrusion ratio of 5:1, and then extruded at a ratio of 10:1. The pressure is higher than that of hot extrusion to obtain chromium oxide and chromium dispersion-strengthened copper matrix composites.
本发明的复合材料与Cu/Al2O3复合材料相比，具有相近的稳定性和高熔点，如下表所示，软化温度超过800K，电导率不低于70％IACS，可应用于高温下要求材料兼备高强度和高传导性能的场合，如：引线框架、电阻焊电极等。Compared with Cu/Al 2 O 3 composite material, the composite material of the present invention has similar stability and high melting point, as shown in the table below, the softening temperature exceeds 800K, and the electrical conductivity is not lower than 70% IACS, which can be applied at high temperature Occasions where materials are required to have both high strength and high conductivity, such as lead frames, resistance welding electrodes, etc.
Cu-Al2O3(Cr2O3)复合材料的性能对比Performance comparison of Cu-Al 2 O 3 (Cr 2 O 3 ) composites
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101047725A CN100443619C (en) | 2006-10-20 | 2006-10-20 | A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101047725A CN100443619C (en) | 2006-10-20 | 2006-10-20 | A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936056A CN1936056A (en) | 2007-03-28 |
| CN100443619C true CN100443619C (en) | 2008-12-17 |
Family
ID=37953794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101047725A Expired - Fee Related CN100443619C (en) | 2006-10-20 | 2006-10-20 | A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100443619C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255311B (en) * | 2012-12-18 | 2014-12-24 | 浙江亚通金属陶瓷有限公司 | Preparation method for copper-chromium contact head material adopting chromium oxide dispersion strengthened copper as substrate |
| CN116219217A (en) * | 2022-12-19 | 2023-06-06 | 北京石墨烯技术研究院有限公司 | Graphene copper-based composite material, preparation method thereof and brake pad |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089543A (en) * | 1983-10-20 | 1985-05-20 | Sumitomo Metal Ind Ltd | Erosion resistant metal-ceramics composite material |
| JPH0672272A (en) * | 1992-08-31 | 1994-03-15 | Takata Kk | Air bag device |
| CN1453385A (en) * | 2002-04-23 | 2003-11-05 | 西安理工大学 | Making process of composite copper-chromium oxide-chromium material |
| CN1518028A (en) * | 2003-01-09 | 2004-08-04 | ������������ʽ���� | Electrode for vacuum valve and vacuum valve, vacuum circuit breaker using the electrode |
| US20040149083A1 (en) * | 2001-07-12 | 2004-08-05 | Takemori Takayama | Copper based sintered contact material and double-layered sintered contact member |
| CN1626691A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院金属研究所 | Frame material for copper leading wire intensified by dispersed alumina |
-
2006
- 2006-10-20 CN CNB2006101047725A patent/CN100443619C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089543A (en) * | 1983-10-20 | 1985-05-20 | Sumitomo Metal Ind Ltd | Erosion resistant metal-ceramics composite material |
| JPH0672272A (en) * | 1992-08-31 | 1994-03-15 | Takata Kk | Air bag device |
| US20040149083A1 (en) * | 2001-07-12 | 2004-08-05 | Takemori Takayama | Copper based sintered contact material and double-layered sintered contact member |
| CN1453385A (en) * | 2002-04-23 | 2003-11-05 | 西安理工大学 | Making process of composite copper-chromium oxide-chromium material |
| CN1518028A (en) * | 2003-01-09 | 2004-08-04 | ������������ʽ���� | Electrode for vacuum valve and vacuum valve, vacuum circuit breaker using the electrode |
| CN1626691A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院金属研究所 | Frame material for copper leading wire intensified by dispersed alumina |
Non-Patent Citations (4)
| Title |
|---|
| Cu/Al2O3(Cr2O3)复合材料的耐磨损性能. 武洲，梁淑华，薛媛，方亮，范志康. 铸造技术，第26卷第6期. 2005 * |
| Internal oxidation of Cr in Cu-Cr/Cu2O compositepowderprepared by mechanical activation. Shuhua Liang, Liang Fang, Zhikang Fan.Materials Science and Engineering A,Vol.374. 2004 * |
| 点焊电极用弥散强化铜基复合材料的进展. 韩胜利，田保红，刘平. 河南科技大学学报(自然科学版)，第24卷第4期. 2003 * |
| 铜铬合金制备方法研究现状. 马凤仓，倪锋，杨涤心. 材料开发与应用，第17卷第3期. 2002 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1936056A (en) | 2007-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100417736C (en) | A method for preparing alumina dispersion strengthened copper matrix composite material | |
| CN107557612B (en) | A kind of graphene enhancing titanium-based nano composite material and preparation method | |
| CN101240387A (en) | Cu-Al2O3 nano strengthened dispersion alloy and preparation method thereof | |
| CN109207766B (en) | High-aluminum-content Cu-Al with controllable structure2O3Preparation process of nano dispersed copper alloy | |
| CN102796912B (en) | Preparation method of Al2O3 dispersion strengthened copper alloy bar | |
| CN101250635A (en) | A kind of preparation method of high-performance powder metallurgy Mo-Ti-Zr molybdenum alloy | |
| CN105506329B (en) | Preparation method for Cu-Al2O3 nano dispersion strengthened alloy with high Al2O3 concentration | |
| CN101717872B (en) | Method for preparing nano dispersion reinforced elastic Cu-Nb alloy | |
| CN111069605B (en) | A 3D graphene/copper composite material prepared in situ with a solid carbon source on the surface of copper powder and method thereof | |
| CN109576529B (en) | High-performance dispersion copper alloy and preparation method thereof | |
| CN109897982B (en) | High-airtightness low-free-oxygen-content nano dispersion copper alloy and short-process preparation process | |
| CN106448795B (en) | Sub- titanium oxide-metal composite conductive material and preparation method thereof | |
| CN110885937B (en) | A kind of Cu-Ti-Ge-Ni-X copper alloy material and preparation method thereof | |
| CN100436634C (en) | Zero-fired hydrogen expansion nano-dispersion strengthened Cu-Al2O3 alloy and its preparation method | |
| CN100443619C (en) | A kind of preparation method of chromium oxide and chromium dispersion strengthened copper matrix composite material | |
| CN110551909A (en) | Method for improving heat conductivity of magnesium-based composite material by using nano diamond and magnesium-based composite material | |
| CN106521205A (en) | Method for preparing aluminum oxide dispersion strengthening copper-based composite material | |
| WO2024152497A1 (en) | Nano dispersion strengthened copper alloy, preparation method therefor and use thereof | |
| JP3910263B2 (en) | Alumina dispersion strengthened copper alloy and method for producing the same | |
| CN105463240A (en) | Preparation method of copper-chromium electrical contact material | |
| CN105112712A (en) | Dispersion strengthening copper base composite material for high-strength and high-conductivity spot-welding electrode and preparation method thereof | |
| CN110499435A (en) | A kind of silver-based electrical contact material and preparation method thereof | |
| CN101540238A (en) | Preparation process of alloyed copper-chromium contact material | |
| CN103695695B (en) | A kind of preparation method containing additive atomization siller tin oxide electric contact material | |
| CN111621667A (en) | Copper-titanium alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20131020 |