赵宁

Professor   Supervisor of Doctorate Candidates   Supervisor of Master's Candidates

Main positions:材料科学与工程学院副院长

Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:School of Materials Science and Engineering

Discipline:Materials Science

E-Mail:zhaoning@dlut.edu.cn


Paper Publications

Roles of interfacial heat transfer and relative solder height on segregated growth behavior of intermetallic compounds in Sn/Cu joints during furnace cooling

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Indexed by:期刊论文

Date of Publication:2018-02-01

Journal:INTERMETALLICS

Included Journals:SCIE、EI

Volume:93

Page Number:186-196

ISSN No.:0966-9795

Key Words:Intermetallics; Anisotropy; Joining; Microstructure; Finite-element modeling; Electron microscopy, scanning

Abstract:Pure Sn solder balls of initial diameter of 2 mm, having been reflow soldered on Cu substrate at 573.15 K for 1, 2 and 5 min, were subjected to furnace cooling. Upon the start of reflow, the initially spherical solder balls underwent a rapid radial spreading and wetting on Cu substrate and thus attained non-spherical geometry with a maximum height at the center whereas a minimum one at the periphery. The wetting or interfacial reaction, that would produce an even scalloped intermetallic compounds (IMCs) during isothermal reflow, resulted in the growth of dense prismatic IMC rods at the central region during cooling whereas the peripheral scalloped IMCs were not overriden by the faceted or prismatic rods during the temperature reduction procedure. Reduced interfacial heat transfer at the central interface, existence of radial isotherms and lowered supply of Cu precipitates at the peripheral interface owing to the compromised solder height have been discussed as the factors responsible for the segregated IMC morphology. The abundant precipitation of Cu and the presence of thermal gradient, sustain a screw dislocation based growth of hexagonal IMC whiskers. The increase in reflow duration is associated with the enhanced tubularity of the rods. Finite element method has been utilized to accomplish numerical simulations for heat and mass transfer in solder phase as well as for anisotropic thermal conduction at the dislocation in evolving IMC.

Pre One:Shielding effect of Ag3Sn on growth of intermetallic compounds in isothermal heating and cooling during multiple reflows

Next One:Process development and reliability for wafer-level 3D IC integration using micro- bump/adhesive hybrid bonding and via-last TSVs

Profile

赵宁,工学博士,教授,博士生导师,现任材料科学与工程学院副院长。《Scientific Reports》期刊编委,IEEE会员、IEEE-EPS会员,中国电子学会(电子制造与封装技术分会)、中国材料研究学会、中国机械工程学会高级会员。

2003年本科毕业于东北大学材料物理专业,2008年博士毕业于大连理工大学材料学专业。2009年至2011年在中科院微电子研究所系统封装技术研究室从事博士后研究,2011年加入大连理工大学材料学院,同年评为副教授,2017年评为博士生导师,2018年评为教授。2016年至2017年在美国佐治亚理工学院做访问学者,合作学者为美国工程院院士、中国工程院外籍院士C.P. Wong教授。

主要从事电子封装微互连材料与技术的基础理论及应用研究,重点围绕微互连方法与成型机理,微焊点晶粒生长调控、组织演变、热迁移行为与可靠性测试分析,晶圆级互连技术,无铅焊料及BGA焊球开发与组织控制,低电阻率电镀铜膜/线等方面开展深入研究。

主持国家自然科学基金(4项)、省部级科研项目十余项,参与多项国家科技重大专项等项目。在Acta Mater.、Mater. Des.、J. Mater. Sci. Tech.、Appl. Phys. Lett.、Scripta Mater.、J. Mater. Process. Tech.、Sci. Rep.、J. Alloys Compd.、Appl. Surf. Sci.、Mater. Charact.、Intermetallics、Mater. Res. Bull.、J. Appl. Phys.、Mater. Lett.、Mater. Chem. Phys.、J. Mater. Res.、J. Electron. Mater.、物理学报、金属学报、中国有色金属学报(英文版)、稀有金属材料与工程等期刊上发表学术论文100余篇;在ECTC、ICEPT、CSTIC、EPTC等国际学术会议上发表EI论文60余篇,5次获得最佳论文奖;获中国发明专利授权25项。入选辽宁省“百千万人才工程”、大连市高层次人才计划。

指导学生:

在读硕士生11人,博士生6人。

已毕业博士生3、硕士生15人。

指导研究生多次获得国家奖学金、省优秀毕业生、市三好学生、校优秀博士/硕士研究生、优秀学位论文等荣誉。

 

欢迎有意从事微电子制造、微电子封装行业,具有材料、机械、物理、微电子专业背景,勤奋好学、积极乐观的学子们加入本课题组!