摘要
采用真空电弧炉熔铸+喷射成形技术,以Cu-0.5Cr-0.2Zr-0.02Y-0.02(0.55La+0.45Ce)为名义成分,通过在石墨坩埚熔铸过程中原位自生成的Cr碳化物制备了颗粒增强Cr3C2/Cu复合材料。研究了该材料的显微组织、力学性能和电学性能。结果表明:经压延变形和时效处理后,该材料的显微组织特征是以稳定的等轴晶α-Cu相为基;经90%压延变形+490℃时效45min处理后,该材料性能为显微硬度Hv100182.7,导电率83.5IACS%,此时显微硬度和导电率配合良好,已达到超大规模集成电路引线框架材料所要求的主要性能指标。
Relying on vacuum arc casting and spray forming technologies and taking Cu-0.5Cr-0.2Zr- 0.02Y-0.02 （0.55La ＋ 0.45Ce） as the nominal composition, Cr3 CJCu particle reinforced composite can be produced by using Cr carbide that is synthesized in situ in the graphite crucible melting process. Moreover, the microstructure, mechanical and electrical properties of the composite are studied in this research. The results indicate that cold deformation and aging treatment of the composition result in a microstructure of equiaxed ot-Cu matrix. Cold deformation of 90% and aging for 45 minutes at 500°C lead to the properties of Hvloo 182.7 in microhardness and 83.5% IACS in conductivity, wherein the microhardhess and conductivity are well balanced, apparently enabling the composite qualified in major performances for being the materials of very large scale integrated circuit lead frame.
出处
《中国体视学与图像分析》
2011年第4期395-399,共5页
Chinese Journal of Stereology and Image Analysis
