ORALS

SESSION: ManufacturingThuAM-R2	2nd Intl. Symp.on Advanced Manufacturing for Sustainable Development
Thu Oct, 24 2019 / Room: Leda (99/Mezz. F)
Session Chairs: Fernand Marquis; Nikoloz Chikhradze; Session Monitor: TBA

11:20: [ManufacturingThuAM01] Keynote
Advances in Synthesis and Densification of Heterogeneous Ultrafine and Nanostructured Materials and Applications in Components and Devices
Fernand D. S. Marquis¹ ; Nikoloz Chikhradze² ; Tetiana Prikhna³ ; Eugene Olevsky¹ ; ¹San Diego State University, San Diego, United States; ²G. Tsulukidze Mining Institute, Tbilisi, Georgia; ³Institute for Superhard Materials, Kiev, Ukraine;
Paper Id: 456 [Abstract]

Because the strength, toughness and other engineering properties of heterogeneous materials are strong dependent on their grain size and density, the quest to achieve simultaneously dense and fine, ultrafine and nanostructured grain size materials has been one of the most important in materials science and engineering. In this work we explore novel approaches for producing dense and fine, ultrafine and nanostructured heterogeneous materials. Typical approaches consist of acoustic cavitation, high energy planetary ball milling, reaction synthesis, and shock synthesis and modified spark plasma synthesis, followed by dynamic and static consolidation and densification pre and post reaction synthesis. Typical heterogeneous multiphase, multi microstructural constituent materials covered in this work consist of tungsten heavy alloys, coated graphite powders, metal silicide and aluminides and ceramic composites. The synthesized and densified materials were fully characterized by OM, SEM, TEM, EDX analysis, quantitative image analysis, X-Ray diffraction and mechanical testing. This paper presents and discusses the effect of reaction and processing parameters on the microstructure, densification, strength and toughness of typical heterogeneous materials and their application into the manufacture of advanced components and devices.

SESSION: AdvancedMaterialsThuPM2-R2	5th Intl. Symp. on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development
Thu Oct, 24 2019 / Room: Leda (99/Mezz. F)
Session Chairs: Fernand Marquis; Udo Schwingenschlogl; Session Monitor: TBA

15:55: [AdvancedMaterialsThuPM209] Plenary
Perspectives on the Role of Transformative Materials and Technologies in Energy, Environment and Sustainability
Fernand D. S. Marquis¹ ; ¹San Diego State University, San Diego, United States;
Paper Id: 455 [Abstract]

Sustainable development is a comprehensive and complex system of systems requiring multidisciplinary and interdisciplinary science and technology inputs with economic, environment and social objectives. The trade space is very wide, and the multitude of trade-offs generate considerable challenges and make it often difficult to achieve an effective balance. During the last sixty years the planet’s population has grown exponentially, from 2.5 to 7.5 billion people, and the technological progress achieved has been tremendous, especially in the industrialized countries. These trends are expected to continue, even at faster rates. All these associated technological activities in the pursuit of better living standards have created a considerable depletion of resources and pollution of land, water and air. Thus, and because most of our resources are limited, it is imperative that we achieve more with less. In broad terms, sustainable development is achieved when the present needs and challenges are met without placing in jeopardy the ability of future generations to meet their own needs and challenges. The global energy demand is expected to increase exponentially, associated with the increase in the global population. The three main reserves of fossil fuels: oil, natural gas and coal are decreasing very rapidly and will not always be available to meet the global demands soon. The continuation of fossil fuel emissions will be environmentally deleterious, and there is already a need to remediate some of the deleterious effects already sustained by the environment. Energy security has become a major and critical issue as fossil fuels are confined to a few areas in the world and their availability is controlled by political, economic and ecological factors. This means that in a short term, considerable energy efficiencies and savings must be achieved, and alternative and renewable sources of energy must be developed. To enable all these technologies considerable advances in energy storage and conversion materials and technologies such as batteries, super capacitors and fuel cells must be achieved. The transportation industry has by far the largest share of global oil consumption and is now the major producer of global greenhouse gas emissions in most industrialized countries. Mobility projections show that it is expected to triple by 2050 with associated energy use and environmental impact. Considerable achievements have recently been obtained in the development of new and advanced materials such as light weight metallic alloys, metal matrix composites, intermetallic and carbon fiber composites and hybrid materials. Nano, nano-structured and nano-hybrid materials systems and nanotechnologies have also been deployed with significant impact. In addition, component redesign using a materials and functional systems integration approach is being used resulting in considerable system improvements and energy efficiency. This resulted in their introduction in the energy, transportation and manufacturing industries in a wide variety of devices and components with considerable technological, economic, environment and social impacts. Keywords: Transformative materials and technologies, nano,

SESSION: ChemistrySatPM1-R9	Tressaud International Symposium on Solid State Chemistry for Applications and Sustainable Development
Sat Oct, 26 2019 / Room: Aphrodite A (100/Gr. F)
Session Chairs: Yuichi Shimakawa; Alain Demourgues; Session Monitor: TBA

14:00: [ChemistrySatPM105] Plenary
Carbon Nanotubes and Graphene Hybrid Materials Systems for Multifunctional Applications
Fernand D. S. Marquis¹ ; ¹San Diego State University, San Diego, United States;
Paper Id: 335 [Abstract]

Carbon nanotubes and graphene are almost perfect molecules with truly amazing combinations of thermal, electrical and structural properties. In order to achieve their full potential, they need to be fully integrated hybrid materials in all sorts of matrices. Full integration requires their development beyond conventional composites so that the level of the non-nanomaterial is designed to integrate fully with the amount of nanotubes and graphene. Here the nanomaterials are part of the matrix rather than a differing component, as in the case of conventional composites. In order to advance the development of multifunctional materials and to integrate nanotubes and graphene, this research is focused on the simultaneous control of the nano-architecture, structural properties, thermal and electrical conductivity of fully integrated hybrid materials. These hybrid material systems are designed to surpass the limits of the rules of mixtures in conventional composite design. The goals are to implement multifunctional designs to fully mimic the properties of carbon nanotubes and grapheme on larger scales for enhanced thermal and electrical management in addition to the control of other properties such as strength, toughness energy and power. These new approaches involve exfoliation, functionalization, dispersion, stabilization, alignment, polymerization, reaction bonding and coating in order to achieve full integration. Typical examples of structural applications of polymeric and ceramic matrices and applications in energy systems such as capacitors and batteries as well as other material systems are presented and discussed.

References:
1. Marquis, F.D.S. “Carbon Nanotube Nanostructured Hybrid Materials Systems for Renewable Energy Applications” JOM, Vol 63, 1 (2011) 48
2. Marquis, F.D.S. and L.P.F. Chibante “Improving the Heat Transfer of Nanofluids and Nanolubricants with Carbon Nanotubes” JOM, 12 (2005) 32-44.
3. Functional Composites of Carbon Nanotubes & Applications”, Lee, K-P, Gopalan, A.I. and Marquis, F.D.S. Marquis, Research Signpost (2009), ISBN 978-81-7895-413-4.
4. Marquis, F.D.S. “The Nanotechnology of Carbon Nanotube Nanofluids” in “Functional Composites of Carbon Nanotubes and Applications”, Lee, K-P, Gopalan, A.I. and Marquis, F.D.S. Marquis, ISBN 978-81-7895-413-4, (2009).