CN1544672A - 高热导率的铜合金材料 - Google Patents

高热导率的铜合金材料 Download PDF

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CN1544672A
CN1544672A CNA2003101109094A CN200310110909A CN1544672A CN 1544672 A CN1544672 A CN 1544672A CN A2003101109094 A CNA2003101109094 A CN A2003101109094A CN 200310110909 A CN200310110909 A CN 200310110909A CN 1544672 A CN1544672 A CN 1544672A
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alloy material
pure
heat conductivity
alloy
high heat
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CN100347321C (zh
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毅 罗
罗毅
黄庆生
程志毅
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CHENGDU JINGZUO TECHNOLOGY DEVELOPMENT Co Ltd
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CHENGDU JINGZUO TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

一种高热导率的铜合金材料,它由以下组分组成:0.0010%-0.0050%重量百分比的Li,0.10%-0.20%重量百分比的Te,余量为Cu。它以纯铜、纯锂、纯碲为原料经真空熔炼制得。其热导率比纯紫铜高28%,比纯银高21%,电导率≥100%(IACS)。

Description

高热导率的铜合金材料
一、技术领域
本发明涉及合金,特别是高热导率和高电导率的铜合金材料制造领域。
二、背景技术
当今时代电子技术突飞猛进,电子元器件飞速发展,如一只晶片上集成的晶体管越来越多,从大规模集成电路已进入到超大规模集成电路。单位面积上的晶体管越多,耗能就越多,散热就成了大问题。预计在2005年一只晶片上集成2亿个晶体管,它就会热得象“核反应堆”,到2010年若一只晶片上集成的晶体管翻一番,就会热到火箭发射时高温气体喷嘴的水平,到2015年若晶体管集成数目再翻番,就会热得与太阳表面温度一样高。因此,超大规模芯片的耗能和散热将成为一个根本性限制,并成为制约整个信息产业乃至全球经济发展的大问题。又如通讯系统,功能越来越多,数据传送越来越快,数码就越来越庞大,耗能越来越巨大,所产生的热量就十分巨大,热不能迅速散去,热量积累起来,就会烧坏机器。再如地对空导弹系统,假设原来同时控制三枚导弹,现同时控制6枚导弹,码子至少增加一倍,耗能至少翻一番,倘若热量不迅速散去,机器很快就会热得无法工作,甚至烧坏。因此,散热成为各种高科技、军事产品发展的大敌。
在现有导热金属材料中,纯银的热导率最高(λ=405~414wm-1k-1),纯紫铜次之(λ=388~391wm-1k-1),但是,现有常规导热材料正面临飞速发展的高新技术产业,尤其是电子业的挑战,已不能满足对高导热材料的要求。
三、发明内容
本发明的目的是提供一种高热导率的铜合金材料,它具有比纯紫铜、甚至比纯银更好的导热性能。本发明的目的通过由以下技术方案加以实现:一种高热导率的铜合金材料,它由以下组分组成:0.0010%-0.0050%重量百分比的Li,0.10%-0.20重量百分比的Te,余量为Cu。
本发明的工艺过程如下:根据上述合金中各组分的含量要求,采用纯铜、纯锂和纯碲为原料,分别经过真空熔炼,分别制出LiCu合金和TeCu合金,再将上述两合金通过真空熔炼,制得含量合符要求的LiTeCu合金。
经微观研究及机理分析得知,Te在铜中以化合物的形式溶于铜中,呈链状平行排,沿晶界和晶内分布,Li起脱氧作用和渗入Te元素后,成线状分布,产生第二相,呈沉淀强化,大大提高了合金的热导率和电导率。本发明经西南交通大学分析测试中心检测其热导率λ=491~502wm-1k-1(SI制)。该材料热导率比纯紫铜(λ=388~391wm-1k-1)高28%,比纯银高21%左右(纯银的热导率最高,纯紫铜次之)。经中国测试技术研究院检测,其电导率≥100%IACS。
四、具体实施方式
实旋例1:按照上述工艺过程,第一步:真空熔炼制得LiCu及TeCu合金,第二步:将两合金真空熔炼制得下述重量百分比含量的铜合金材料:
Li      0.0020%
Te      0.12%
Cu      余量
该合金热导率498wm-1k-1(SI),电导率102.1%(IACS)。
实旋例2:工艺过程同上,真空熔炼制得下述重量百分比含量的铜合金材料:
Li      0.0030%
Te      0.15%
Cu      余量
该合金热导率502wm-1k-1(SI),电导率102.4%(IACS)。
实旋例3:工艺过程同上,真空熔炼制得下述重量百分比含量的铜合金材料:
Li      0.0040%
Te      0.18%
Cu      余量
该合金热导率491wm-1k-1(SI),电导率101.5%(IACS)。

Claims (4)

1、一种高热导率的铜合金材料,其特征是,它由以下组分组成:
0.0010%-0.0050%重量百分比的Li,
0.10%-0.20重量百分比的Te,
余量为Cu。
2、根据权利要求1所述的铜合金材料,其特征是它由以下组分组成:
0.0020%重量百分比的Li,
0.12%重量百分比的Te,
余量为Cu。
3、根据权利要求1所述的铜合金材料,其特征是它由以下组分组成:
0.0030%重量百分比的Li,
0.15%重量百分比的Te,
余量为Cu。
4、根据权利要求1所述的铜合金材料,其特征是它由以下组分组成:
0.0040%重量百分比的Li,
0.18%重量百分比的Te,
余量为Cu。
CNB2003101109094A 2003-11-11 2003-11-11 高热导率的铜合金材料 Expired - Fee Related CN100347321C (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101768682B (zh) * 2010-02-08 2011-10-05 四川鑫炬矿业资源开发股份有限公司 一种高导易切削铜硒锂合金材料
CN105112714A (zh) * 2015-09-08 2015-12-02 周欢 一种高导铜合金材料
CN105112721A (zh) * 2015-09-08 2015-12-02 周欢 一种铜稀土合金材料

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5519710A (en) * 1978-07-28 1980-02-12 Hitachi Ltd Vacuum breaker electrode
JPS58108622A (ja) * 1981-12-21 1983-06-28 三菱電機株式会社 真空開閉器用電極材料
GB2175009B (en) * 1985-03-27 1990-02-07 Mitsubishi Metal Corp Wire for bonding a semiconductor device and process for producing the same
CN1177069C (zh) * 2002-09-18 2004-11-24 四川鑫炬矿业资源开发股份有限公司 接触网导线用铜合金材料

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101768682B (zh) * 2010-02-08 2011-10-05 四川鑫炬矿业资源开发股份有限公司 一种高导易切削铜硒锂合金材料
CN105112714A (zh) * 2015-09-08 2015-12-02 周欢 一种高导铜合金材料
CN105112721A (zh) * 2015-09-08 2015-12-02 周欢 一种铜稀土合金材料

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