Please wait, while we are loading the content...
Please wait, while we are loading the content...
Content Provider | IEEE Xplore Digital Library |
---|---|
Author | Wang, Y.W. Kao, C.R. |
Copyright Year | 2009 |
Description | Author affiliation: Department of Materials Science & Engineering Taiwan University Taipei City, Taiwan, China (Wang, Y.W.; Kao, C.R.) |
Abstract | The objective of this study is to investigate the alloying effects of Fe, Co, and Ni on the interfacial reactions between solder and Cu. Emphasis is placed on a systematic comparison study on the effect of Fe, Co, and Ni additions. Solders with simultaneous Fe and Ni addition as well as simultaneous Co and Ni addition are also prepared in order to investigate whether there is any interaction between the alloying elements. The results of this study can be summarized as below: (1) In multiple reflow study using the Sn2.5Ag0.8Cu, Sn2.5Ag0.8Cu0.03Fe, Sn2.5Ag0.8Cu0.03Co, Sn2.5Ag0.8Cu0.03Ni, Sn2.5Ag0.8Cu0.03Fe0.03Ni, and Sn2.5Ag0.8Cu0.03Co0.03Ni solder over Cu substrate, Cu6Sn5 was the only reaction product for all the different solders used. (2) Reflows using the solder without doping produced a thin, dense layer of Cu6Sn5. The additions of Fe, Co, or Ni transformed the microstructure into a much thicker Cu6Sn5 with many small trapped solder regions between the grains. (3) The amount of Cu6Sn5 formed at the interface increased with the number of reflows. (4) In solid state aging study, both Cu6Sn5 and Cu3Sn formed, but the additions of Fe, Co, or Ni produced a much thinner Cu3Sn layer in all cases in this study. The growth of Cu3Sn followed the parabolic kinetics. (5) The simultaneous addition of 0.03 wt.% of Fe and Ni was the most effective in reducing the Cu3Sn thickness. The Cu3Sn thickness was only one-third that of Sn2.5Ag0.8Cu. (6) The additions of Fe, Co, or Ni in an amount as small as 0.03 wt.% were effective in reducing the Cu3Sn thickness at 160°C for at least 2000 hrs. |
Starting Page | 534 |
Ending Page | 539 |
File Size | 4805507 |
Page Count | 6 |
File Format | |
ISBN | 9781424446582 |
DOI | 10.1109/ICEPT.2009.5270694 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2009-08-10 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Environmentally friendly manufacturing techniques Lead Testing Tin Iron Alloying Doping Microstructure Solid state circuits Aging |
Content Type | Text |
Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
Sl. | Authority | Responsibilities | Communication Details |
---|---|---|---|
1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
7 | National Digital Libarray of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
Loading...
|