题目1：Nanocarbon added ceramics: current status and future trends

题目2：Ceramic biomaterials: from traditional technologies to novel applications

时间：2025年7月24日（周四），15：00-17：00

地点：李薰楼468会议室

题目1：Nanocarbon added ceramics: current status and future trends

报告人：Csaba Balázsi

报告摘要：The lecture will give a comprehensive view on innovative developments made in the field of nanocarbons e.g. carbon black, carbon nanotubes, graphene added ceramics highlighting the key issues related to integration technology and improvements in the mechanical, tribological or functional properties as a result. Among non-oxide ceramics the silicon nitride based ceramics are well-known as low density materials with high strength and toughness. Silicon nitride, known as a typical dielectric material, is an ideal candidate for several structural applications, even at high temperatures. The addition of graphene or carbon nanotubes to silicon nitride to create ceramic nanocomposites gives rise to promising applications in a wide range of fields such as electronics, biomedical aids, membranes, flexible wearable sensors and actuators, energy systems. The presentation will show how the use of different reinforcing phases and sintering methods influence the microstructure and as a result, mechanical properties, electrical, thermal conductivity and tribological properties of the final silicon nitride nanocomposites. The prospective future applications will be also discussed.

个人简介：

Dr. Csaba Balázsi is Scientific Advisor of the HUN-REN Centre for Energy Research, Centre of Excellence of Hungarian Academy of Sciences. He obtained MSc degree in Materials Science and Metallurgical Engineering from Transilvania University of Brasov, Romania. He received PhD in Materials Science from University of Miskolc, Hungary in 2000. He is President of Fine Ceramics section of the Hungarian Scientific Society of Silicate Industry (SZTE) and Representative of SZTE in International Ceramic Federation (ICF), Member of Council Board and Industrial Working Group Leader – European Ceramic Society (ECerS), Member of the American Ceramic Society (ACerS) since 2004, Member in European Materials Research Society (EMRS), Bolyai Engineering Science Committee Evaluation (HAS). He served as Board Member of the Hungarian Society of Materials Science (MAE), Executive Committee Member of Federation of European Materials Societies (FEMS), Member of PEC (ECerS) and Steering Committee Member of Energy Materials Industry Research Innitiative (EMIRI), Brussels. He holds several awards, fellowships: Bolyai Plaqett (HAS), Fellow of the European Ceramic Society (ECerS), Gabor Dennis award (Novofer Foundation), ACerS Global Amassador (ACerS), Fellow of the American Ceramic Society (ACerS),  Mrityunjay Singh Bridge Building Award (ACerS), Late Shri J.S. Minhas Memorial Award (Indian Ceramic Society), Excellence Award BiomMed'2024 (Romanian Society for Biomaterials), Szent Antal Award (Parent’s House Foundation) and he is Academician of the World Academy of Ceramics.

google scholar: https://scholar.google.com/citations?user=XL8JPRYAAAAJ&hl=en

题目2：Ceramic biomaterials: from traditional technologies to novel applications

报告人：Katalin Balázsi

报告摘要：There are more than 400 000 artificial hip joint operations made every year in the word and there are some 25 000 000 people who have either a partial or a total hip replacement (THR). It has been estimated that the aged people population has increased tremendously in recent past and there will be seven times increase. Because the human body is at the same time both a very hostile and sensitive environment for foreign objects, the life span of a hip implant is limited.  With time, the wear and risk of the implant loosening increases so that after 10 years 10-20% of the implants have to be renewed.

Biomaterials used for implant should possess some important properties in order to long-term usage in the body without rejection.  Materials used as different biomaterials should be made with certain properties as excellent biocompatibility, superior corrosion resistance in body environment, excellent combination of high strength and low modulus, high ductility and be without toxicity. On the other hand, the mechanical, chemical and surface properties play a key role in the creation of sufficient and long term functional replacements. New fundamental research outcomes with industrial perspectives are given for understanding the applications of ceramic materials in load-bearing and low-load-bearing bioimplants with directions for future developments.

Several types of biomaterials have been used for THRs in orthopaedic surgery since the 20th century. Metallic materials, such as stainless steel, cobalt-chromium, titanium and titanium alloys have been widely used due to their excellent mechanical strength. Stainless steel was replaced soon by the reason of poor biocompatibility and corrosion in the body. Nowadays, Si₃N₄ is a new bioceramic for total hip replacements with extremely good mechanical properties. Hydroxyapatite (HA) is a widely used bioceramic in implantology considering its high bioactivity. A biodegradable and bioactive coating (e. g. HA) on the bioinert ceramic implant’s surface (e. g. Si3N4) could induce tissue reactions and help avoid the rejection from the body in the critical early few days after the operation.

In this presentation, different preparation of ceramic biomaterials will be showed from traditional technologies to novel applications. The main trends of the modern biomaterial science and technology, as well as the fundamental scientific problems will be discussed.

个人简介：

Katalin Balázsi, Head of the Thin Film Physics Department at HUN-REN Centre for Energy Research, Academician of the World Academy of Ceramics, Fellow of the American and European Ceramic Societies and President of the Association of the Hungarian Women in Science.

She is an author of more than 150 scientific publications in field of technical ceramics, bioceramics and thin films with i10-index 55.  She is serving as a supervisor of the Hungarian and foreing Stipendium Hungaricum PhD students.

Dr. Balázsi’s current research field is focused on bioceramic, Si₃N₄/graphene ceramics and sintered ceramics for energy sector. More than 120  publications and 1400 independent citations are known to her work until 2023. She was a co-chair of ECERS 2017 in Budapest, chair of WOCERAM 2019 (JECS Trust event) in Budapest and conference chair of 14th International Conference on Ceramic Materials and Components for Energy and Environmental Systemsin Budapest 2024.

She is acting as supervisor of Hungarian and foreign PhD students at Hungaricum Stipendium programme. She was awarded by Nature Research Innovating Science Award (as NATE president) in 2018, ACERS Engineering Ceramics Division (ECD) Jubilee Global Diversity Award in 2019 and Acta Materialia Mary Fortune Diversity Medal in 2021.