Quasi-ambient bonding to enable cost-effective high temperature Pb-free solder interconnects
Lead Research Organisation:
University of Manchester
Department Name: Materials
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Publications
Bekaert J
(2020)
Enhanced Superconductivity in Few-Layer TaS2 due to Healing by Oxygenation.
in Nano letters
Bell E
(2022)
Directed evolution of an efficient and thermostable PET depolymerase
in Nature Catalysis
Cai W
(2019)
Solution-Processed HfO x for Half-Volt Operation of InGaZnO Thin-Film Transistors
in ACS Applied Electronic Materials
CONLAN A
(2020)
Direct measurement of TEM lamella thickness in FIB-SEM
in Journal of Microscopy
Hopkinson DG
(2019)
Formation and Healing of Defects in Atomically Thin GaSe and InSe.
in ACS nano
Ramachandran S
(2022)
Fast in-situ synchrotron X-ray imaging of the interfacial reaction during self-propagating exothermic reactive bonding
in Materialia
Wu F
(2022)
X-Ray Imaging of Complex Flow Patterns during Tungsten Inert Gas Welding
in Journal of Materials Engineering and Performance
Zhao X
(2022)
Controlling and Monitoring Crack Propagation in Monolayer Graphene Single Crystals
in Advanced Functional Materials
Zhu W
(2019)
Formation and homogenisation of Sn Cu interconnects by self-propagated exothermic reactive bonding
in Materials & Design
| Description | This grant generated significant new knowledge regarding the microstructural characteristics and the factors affecting the microstructure for QAB joints employing Ni-Al nano-foils. Key to achieving this was development of a new experimental set-up for synchrotron studies of the bonding process at high time resolution, supported by numerical analysis of the bonding. This generated new proposals for improving the integrity of lead-free bonding joints by application of pressure and surface treatments, proving opportunities for improving the stability and integrity of electronic bonding processes without using harmful elements like lead in the bonding process. |
| Exploitation Route | We hope our research concepts for improving bond integrity will be tested at larger scale by partners in the power electronics industry, likely through the project industrial partners in due course for die-attach and baseplate bonding. Additionally our research has developed an experimental set-up for high speed imaging of bond formation that could be applied to other pulse triggered materials and processes. |
| Sectors | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Electronics,Energy,Manufacturing, including Industrial Biotechology |
| Description | The project industrial collaborators have expressed their great interest in exploitation of the potential research findings, and will to support from various angles to make use of the technologies to be developed. With the existing industrial collaborators, we have recently expanded the potential uses of the QAB process for bonding different substrates including power module baseplates with the aim to reduce the damage caused by differences in the thermal expansion of neighbouring components. |
| First Year Of Impact | 2021 |
| Sector | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Electronics,Manufacturing, including Industrial Biotechology |
| Impact Types | Economic |
| Title | Advanced simulation tool for QAB bonding process analysis |
| Description | Phase field models has been established to underpin the fundamental understanding of relevant phenomena associated with QAB bonding and performance of bonded structures, e.g. void formation, incurred residual stress, and their effects on reliability of the bonds. |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2020 |
| Provided To Others? | No |
| Impact | The notable impacts include: i) provide detailed SPER bonding process in terms of liquid-solid interfacial interactions/reactions; ii) quantitively evaluation of internal voids and their formation, as well as resultant residual stresses; ii) the tool may be applicable to the potential applications to enable understanding the phenomena of multi-scale and multi-phase interactions in the manufacturing. |
| Description | ISCF-DER Challenge centre partnership |
| Organisation | Manufacturing Technology Centre (MTC) |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | As an academic partner within the consortium the team has contributed invariably in the preparation of the relevant technical attributes to the DER centre biding team. |
| Collaborator Contribution | Our partner had been working and co-ordinating the application and the relevant activities. |
| Impact | The panel interview has be conducted by UKRI, and the result will be confirmed shortly by this week. |
| Start Year | 2020 |
| Description | ISCF-DER Challenge centre partnership |
| Organisation | University of Nottingham |
| Department | Nottingham Clinical Trials Unit (NCTU) |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | As an academic partner within the consortium the team has contributed invariably in the preparation of the relevant technical attributes to the DER centre biding team. |
| Collaborator Contribution | Our partner had been working and co-ordinating the application and the relevant activities. |
| Impact | The panel interview has be conducted by UKRI, and the result will be confirmed shortly by this week. |
| Start Year | 2020 |
| Description | Teer coating limited |
| Organisation | Teer Coatings Ltd |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | We provide a business need for potentially using the equipment, expertise and technology of Teer coatings limited. |
| Collaborator Contribution | Teer coating offered some trials to develop novel surface coatings for bonding. |
| Impact | Currently planning various experimental trials. |
| Start Year | 2022 |
| Description | IMAPS-UK presence and engagement |
| Form Of Engagement Activity | A magazine, newsletter or online publication |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Industry/Business |
| Results and Impact | IMPAS-UK 2020 February newsletter reported our current research activities which can be connected to this work. |
| Year(s) Of Engagement Activity | 2018,2019,2020 |
| Description | Industrial demonstrations |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Industry/Business |
| Results and Impact | Working directly with project partners to demonstrate the uses of the technology using the benchmark components and materials. |
| Year(s) Of Engagement Activity | 2018 |
| Description | Project Kick off meeting |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Industry/Business |
| Results and Impact | Kick off meeting to advertise the grant funding and help establish the collaboration. The process of signing confidentiality and collaboratory agreements was begun. |
| Year(s) Of Engagement Activity | 2018 |
| Description | Talk at Discover Materials Open day |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Schools |
| Results and Impact | Talk as part of the Discover Materials open day - generated lively discussion and follow up enquiries "As part of our Discover Materials Open Week Professor Sarah Haigh (University of Manchester) gave this very interesting talk about microscopy, which a very important are in Materials Science and Engineering, and how we can actually see atoms!" |
| Year(s) Of Engagement Activity | 2020 |
| URL | https://www.youtube.com/watch?v=5-EZzR-y2-E |