宋学官

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:东亚大学

学位:博士

所在单位:机械工程学院

学科:机械设计及理论

办公地点:大方楼8021#

电子邮箱:sxg@dlut.edu.cn

扫描关注

码过的文

当前位置: 宋学官 >> 科研 >> 码过的文

Effect of cooling condition and Ag on the growth of intermetallic compounds in Sn-based solder joints

点击次数:

论文类型:期刊论文

第一作者:Ma, Haoran

通讯作者:Ma, HT (reprint author), Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China.

合写作者:Kunwar, Anil,Guo, Bingfeng,Sun, Junhao,Jiang, Chengrong,Wang, Yunpeng,Song, Xueguan,Zhao, Ning,Ma, Haitao

发表时间:2016-12-01

发表刊物:APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING

收录刊物:SCIE、EI、Scopus

卷号:122

期号:12

ISSN号:0947-8396

摘要:The intermetallic compound growth in Sn/Cu and Sn-3.5Ag/Cu solder joints undergoing cooling has been in-situ observed using synchrotron radiation X-ray imaging technique. The overall thickness of intermetallic compound attained during cooling condition is dependent on the rates of Cu precipitation or deposition from the bulk solder and Cu diffusion from grain boundary at interface. Although the net increase in IMC thickness contributed predominantly by deposition kinetics is greater for air cooling than in furnace cooling from the start temperature of 300 degrees C for the first 20 min, the former solidifies before 30 min and the latter stays in liquid state for 1 h due to slower cooling rate and attains a bigger IMC of size about 14.5 lm. In context of Sn-3.5Ag solders subjected to air cooling from 275 degrees C, the presence of Ag contributes to the increment in overall IMC thickness during the cooling period. For the improvement in solder joints reliability, faster cooling rate and limiting the Ag content can be employed as the materials design and processing parameters.