Guilherme Vacchi | Materials Science | Best Researcher Award

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Mr. Guilherme Vacchi | Materials Science | Best Researcher Award

Federal University of São Carlos | Brazil

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🎓 Early Academic Pursuits: Building the Foundation of Expertise

Mr. Guilherme Vacchi began his academic journey at the prestigious Federal University of São Carlos (UFSCar), earning his degree in Materials Engineering. His passion for metallurgical science and corrosion phenomena led him to pursue both a Master’s and Ph.D. from the same institution. During this formative phase, he specialized in welding processes, corrosion mechanisms, and microstructural characterization, laying the groundwork for a lifelong dedication to materials science.

🧑‍🏫 Professional Endeavors: Bridging Theory and Application

With over seven years of teaching experience at both technical and university levels, Guilherme has shaped the next generation of engineers. He currently serves as a postdoctoral researcher at UFSCar, actively engaging in advanced corrosion and welding studies. Alongside his academic role, he contributes to industry by offering consultancy services in corrosion, welding techniques, and electrochemical testing—proving his versatility across theoretical and applied domains.

🔬 Contributions and Research Focus: A Precision-Driven Vision

Mr. Vacchi's research targets critical areas in corrosion science, stainless steels, nickel-based alloys, and solid-state welding techniques like friction stir welding. His completed and ongoing projects explore abrasion-impact resistance, high-temperature oxidation, and failure analysis of advanced materials. Through a keen focus on structural integrity in aggressive environments, his studies illuminate the behavior of materials under industrial and marine conditions, influencing both academic understanding and industrial practices.

🏅 Accolades and Recognition: Earned Through Rigor and Innovation

With an h-index of 9, over 250 citations, and publications in high-impact journals such as Corrosion Science, Applied Surface Science, and Advanced Engineering Materials, Guilherme's contributions are globally acknowledged. He has also co-authored a chapter in a recognized materials science book, further underlining his scholarly reach. His role as a reviewer for top-tier journals and memberships in national symposiums reflect his academic credibility.

🌐 Impact and Influence: A Catalyst for Change in Materials Science

Through collaborations with notable scholars across Brazil and Europe—including affiliations with Graz University of Technology and Helmholtz-Zentrum Hereon—Mr. Vacchi advances international research dialogues. His consultancy engagements foster innovation transfer between academia and industry, particularly in sectors requiring high corrosion resistance and material performance. He is actively involved in shaping curricula and developing educational resources in metrology, welding, and material integrity.

🚀 Legacy and Future Contributions: Shaping the Material World

Looking forward, Guilherme dos Santos Vacchi aims to continue pushing boundaries in corrosion science and welding innovation. His evolving research on super duplex stainless steels and shape memory alloys promises valuable insights for industries such as offshore engineering, energy, and biomedical devices. With a passion for sustainable solutions and integrity in engineering design, he stands poised to leave a lasting legacy in the field of materials engineering.

Publications

📄Unraveling the Cr₂N Precipitation and Its Negative Effect on the Corrosion Resistance of Friction Stir Welded UNS S32760 Super Duplex Stainless Steel

Author(s): G.S. Vacchi, W.S. de Carvalho, C.P. Meinhardt, L.A. Bergmann, S.T. Amancio-Filho, C.A.D. Rovere
Journal: Surfaces and Interfaces
Year: 2025

📄Microstructural Evolution and Localized Corrosion Behavior of Friction Stir Welded Super Duplex UNS S32760 in Chloride-Containing Environments

Author(s): G.S. Vacchi, D.C.C. Magalhães, A.A. Mendes Filho, O.M. Cintho, C.P. Meinhardt, L.A. Bergmann, C.A.D. Rovere
Journal: Journal of Materials Research and Technology
Year: 2025

📄Influence of Long-Term Immersion Tests on the Electrochemical Corrosion Behavior of an Ultrafine-Grained Aluminum Alloy

Author(s): Guilherme dos Santos Vacchi, Danielle Cristina Camilo Magalhães, Cristie Luis Kugelmeier, Rodrigo da Silva, Anibal de Andrade Mendes Filho, Andrea Madeira Kliauga, Carlos Alberto Della Rovere
Journal: Metals
Year: 2024

📄Corrosion Behavior of 316L Stainless Steel Reinforced by Dispersed Yttria Stabilized Zirconia Fabricated by Spark Plasma Sintering

Author(s): Lucas de Figueiredo Soares, Francisco Maciel Brito Neto, Lucas Moura Montenegro Reis, Guilherme dos Santos Vacchi, Sergio Neves Monteiro, Carlos Alberto Della Rovere, Vera Lúcia Arantes
Journal: Journal of Materials Research and Technology
Year: 2024

📄A Survey on the Oxidation Behavior of a Nickel-Based Alloy Used in Natural Gas Engine Exhaust Valve Seats

Author(s): José Henrique Alano, Renato Siqueira, Claudio Martins Júnior, Rodrigo Silva, Guilherme Santos Vacchi, C.A. Della Rovere
Journal: Metals
Year: 2022

Byunghak Choe | Materials Science |Best Researcher Award

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Prof. Byunghak Choe | Materials Science |Best Researcher Award

Gangneung-Wonju National University  | South Korea 

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Early Academic Pursuits

Prof. Byunghak Choe began his distinguished academic journey at Seoul National University, Korea, where he earned his Bachelor of Science (1984), Master of Science (1986), and Ph.D. (1990) in Metallurgical Engineering. His early academic pursuits laid a solid foundation in metallurgy, focusing on the behavior of metal parts and their failure mechanisms.

Professional Endeavors

After completing his Ph.D., Prof. Choe joined the Korea Institute of Machinery and Metals (KIMM) as a Senior Researcher in the High-Temperature Materials Lab, where he worked from 1990 to 1995. In 1995, he transitioned to academia as a Professor in Advanced Metal & Materials Engineering. His tenure at Gangneung-Wonju National University has been marked by significant leadership roles, including serving as the Dean of the College of Engineering from 2018 to 2020. Additionally, he broadened his research horizons as a Visiting Scholar at Michigan Tech University, USA, from 2002 to 2003.

Contributions and Research Focus

Prof. Choe's research primarily revolves around failure analysis of metal parts and equipment. He has published more than ten research papers on this topic in the last eight years and has been involved in over ten projects in the last twelve years. His comprehensive work includes authoring multiple editions of "Failure Analysis for Metals," a key reference in the field. His recent research projects include technical reviews and failure analyses of turbine nozzle erosion, bellows specimens, heat-affected parts by fire for LNG tanks, and various other metal components. His notable publications delve into hydrogen-induced cracks in stainless steel, stress corrosion cracking propagation, and microstructural changes in cladding materials.

Accolades and Recognition

Prof. Choe's expertise in metallurgical engineering has earned him significant recognition. He serves as the Chairman of the KGS Code Committee at the Korea Gas Safety Corporation and has been the Vice President of Technology at the Korea Institute of Metals and Materials. His technical expertise is frequently sought after for accident investigations by the Korea Gas Safety Corporation and the Forensic Investigation Advisory Committee of the National Police Agency, Korea.

Impact and Influence

Prof. Choe's impact on the field of metallurgical engineering is profound. His research on failure analysis has advanced the understanding of how metals behave under stress and corrosive environments, particularly in high-temperature applications. His work on hydrogen embrittlement and stress corrosion cracking has provided valuable insights that have influenced both academic research and industrial practices. His role as an educator and mentor has also shaped the careers of numerous engineers and researchers in the field.

Legacy and Future Contributions

Prof. Choe's legacy is marked by his dedication to advancing metallurgical engineering through rigorous research, comprehensive education, and practical industry applications. His ongoing research projects and patents, such as the defect inspection device for tubes and the exhaust gas purification device, highlight his continuous contributions to solving real-world engineering problems. As he continues to lead research and mentor the next generation of engineers, Prof. Choe's future contributions are expected to further the field of failure analysis and metallurgical engineering, ensuring the safety and reliability of metal components in various industries.

 

Notable Publications

Effect of metastable precipitate phase transformation on reheat cracking in SS347H welding 2024

The effect of TCP-σ precipitates on surface pitting and cracking in a Ni-based superalloy turbine blade 2024 (1)

Effect of High Temperature Oxidation on Surface Pit and Recrystallization of Directionally Solidified CM247LC Superalloy in Creep Gauge 2023 (1)

Hydrogen Induced Cracks in Stainless Steel 304 in Hydrogen Pressure and Stress Corrosive Atmosphere 2020 (5)

Analysis of Stress Corrosion Cracking Propagation of SS304 Stainless Steel Using Crack Shape and Etch Pits 2020 (2)

 

 

 

 

Giovanna Maresca | Materials Science | Best Researcher Award

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Dr. Giovanna Maresca | Materials Science | Best Researcher Award

Customs Agency and Monopolies | Italy

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Early Academic Pursuits

Dr. Giovanna Maresca pursued her higher education with a focus on chemistry and materials science. She engaged in significant research from the outset of her career, beginning with her involvement in the project "Hyrides as high-capacity anodes for lithium ion batteries" at "La Sapienza" University of Rome. Her academic journey included synthesizing and studying electrolytic systems compatible with high-capacity hydride-based anodes, laying a strong foundation for her future research endeavors in battery technology.

Professional Endeavors

Dr. Maresca has accumulated extensive professional experience through various prestigious fellowships and research grants across multiple countries:

* Chemist at Customs and Monopolies Agency (ADM), Bologna, Italy (04/18/2022 – CURRENT): Dr. Maresca currently works in this role, applying her expertise in chemistry within the regulatory framework of excise, customs, and monopolies.

* Visiting Fellow at Bernal Institute, University of Limerick, Ireland (01/05/2023 – 30/06/2023): She worked on characterizing post-mortem silicon, hard carbon, and Na-NMO electrodes through XPS and FE-SEM analyses under the supervision of Kevin M. Ryan.

* Research Grant at ENEA Casaccia, Cesano, Italy (04/03/2021 – 18/04/2022): Participated in the European project Si-Drive, focusing on the synthesis and characterization of ionic liquids and innovative electrolytes for lithium batteries. She worked under the guidance of Dr. Giovanni Battista Appetecchi and Prof. Sergio Brutti.

* Samsung Research Fellow at "La Sapienza" University of Rome, Italy (09/30/2016 – 10/30/2020): Worked on the project "Solid-state batteries using novel composite anodes" in collaboration with SAMSUNG, focusing on the synthesis and optimization of electrode composite materials. This fellowship included a period as a visiting fellow at Samsung R&D Institute Japan, studying electrode materials for solid-state batteries under the supervision of Seitaro Ito and Yuichi Aihara.

  • Research Fellow at Politecnico di Turin DISAT – Applied Science Department Technology/ENEA Casaccia, Turin, Italy (15/03/2014 – 14/03/2015): Engaged in the European project MARS-EV, working on the synthesis and characterization of ionic liquids and innovative electrolytes for lithium batteries.

Contributions and Research Focus

Dr. Maresca's research primarily focuses on the development and optimization of materials for energy storage, particularly lithium-ion and solid-state batteries. Her contributions include:

* Synthesis and characterization of innovative electrolytes and electrode materials.

* Development of high-capacity anodes and optimization of composite materials for solid-state batteries.

* Extensive chemical-physical characterization and electrochemical testing of battery components.

* Pioneering research on post-mortem analysis of battery electrodes to improve their performance and longevity.

Accolades and Recognition

Dr. Maresca has been recognized for her significant contributions to battery technology and materials science through prestigious fellowships and research grants. Her collaborations with leading institutions and corporations such as Samsung and ENEA underscore her impact in the field.

Impact and Influence

Dr. Maresca's work has had a profound impact on the development of next-generation energy storage solutions. Her research on high-capacity anodes and solid-state batteries contributes to advancements in electric vehicle technology and sustainable energy storage systems. Her collaborative efforts with international research institutions have also facilitated the exchange of knowledge and innovation in materials science.

Legacy and Future Contributions

Dr. Maresca's continued research and professional activities promise to further enhance the performance and safety of battery technologies. Her ongoing work at the Customs and Monopolies Agency, along with her involvement in cutting-edge research projects, positions her as a key contributor to the future of sustainable energy storage solutions. Her legacy lies in her commitment to advancing battery technology, paving the way for more efficient and durable energy storage systems in the years to come.

 

Notable Publications

Improved Compatibility of α‐NaMnO2 Cathodes at the Interface with Ionic Liquid Electrolytes 2024

Outstanding Compatibility of Hard-Carbon Anodes for Sodium-Ion Batteries in Ionic Liquid Electrolytes 2023 (1)

Silicon‐Based Composite Anodes for All‐Solid‐State Lithium‐Ion Batteries Conceived by a Mixture Design Approach 2023 (5)

Sodium-Conducting Ionic Liquid Electrolytes: Electrochemical Stability Investigation 2022 (8)

Sn/C composite anodes for bulk-type all-solid-state batteries 2021 (9)