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A Graphene Enhanced SiC - SiC Ceramic Composite Bonding Solution for Generation IV

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0019553
Agency Tracking Number: 242239
Amount: $150,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: 20b
Solicitation Number: DE-FOA-0001940
Timeline
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-02-19
Award End Date (Contract End Date): 2020-02-18
Small Business Information
1163 River Chase Ridge
Charlottesville, VA 22901-0644
United States
DUNS: 078313742
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Yellapu Murty
 (434) 806-9852
 ymurty@mctechnologies.us
Business Contact
 Yellapu Murty
Phone: (434) 806-9852
Email: ymurty@mctechnologies.us
Research Institution
 University of Virginia
 
122 Engineer's Way
Charlottesville, VA 22903-4833
United States

 Nonprofit college or university
Abstract

Ceramic matrix SiC-SiC composites are currently the leading candidate for Generation IV nuclear reactor fuel cladding and other structural components, due to their excellent thermal and chemical stability under extreme conditions. However, robustly joining SiC structures when exposed to such harsh operating conditions still presents a major roadblock. A novel bonding joint compound leveraging graphene enhancement is proposed for overcoming the difficulties associated with the promising Ti-Si- C diffusion bonding system. The two-dimensional nanostructure of graphene enables thin layers of carbon to be wrapped around Ti and Si particles, promoting a highly reactive and unique bonding interface. Through intelligent joint compound design, it is anticipated that the interface composition and microstructure can be tuned to address critical bonding challenges. Additional work will be done to characterize the fabricated joints mechanically, chemically and microscopically. The key metric for Phase 1 will include mechanical performance under bending and will include a demonstration of the optimized joint compound for bonding SiC ceramic matrix composites relevant to nuclear fuel cladding. Phase 2 will be directed at joining SiC tubular composites and expand to address anticipated irradiation, corrosion and thermal stability. The research team’s expertise in materials design and development, as well as expertise in preparation and evaluation of composite materials will ensure the success of this project.

* Information listed above is at the time of submission. *

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