摘要
Cu-Fe-P系合金是广泛应用的制造集成电路引线框架的材料。本文通过对Cu-0.22Fe-0.06P,Cu-0.22Fe-0.06P-0.05Ce,Cu-0.22Fe-0.06P-0.02B和Cu-0.22Fe-0.06P-0.05Ce-0.02B(%,质量分数)这4种合金的杂质元素含量、显微组织、力学性能和导电率进行测试分析,研究了添加铈和硼对Cu-Fe-P合金纯净度、组织和性能的影响。结果表明,添加微量的铈和硼,一方面具有显著的脱S,Bi,Pb等杂质元素作用;另一方面显著地提高合金的再结晶温度,使合金经冷轧加工+时效处理后可以获得加工硬化和时效强化的效果,而对导电性的影响微小,从而使合金获得高强度和高导电率的良好结合。
Cu-Fe-P alloys are widely used as lead frame materials. In this paper the effects of B and Ce on the purity, microstructures and properties of Cu-Fe- P alloys were studied. The contents of some impurity elements, microstructures, mechanical properties and conductivity of four experimental alloys, Cu-0.22Fe- 0.06P, Cu-0.22Fe-0.06P-0.05Ce, Cu-0.22Fe-0. 06P-0. 02B and Cu-0. 22Fe-0. 06P-0.05Ce-0.02B （%, mass fraction）, were tested and analyzed. Results show that on one hand, B and Ce have the remarkable function of removing S, Pb and Bi from copper alloys; on the other hand, the recrystallization temperature of Cu-Fe：P alloy is greatly raised by adding trace B and Ce, the combining strengthening effects are made by both precipitation hardening and cold working hardening after cold working and aging, while the negative effect of B and Ce on conductivity is slight. Therefore, a good combination of high strength and high conductivity is achieved.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2006年第4期475-479,共5页
Journal of the Chinese Society of Rare Earths
基金
江西省自然科学基金资助项目(0510066)
关键词
硼
铈
铜合金
组织
性能
稀土
boron
cerium
Cu-Fe-P alloy
microstructure
property
