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Prof. Wayne Kaplan (Technion - Israel Institute of Technology)31/08/2026, 13:40Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Grain boundary mobility in ceramics can be extremely sensitive to segregating dopants or impurities. Using α-Al2O3 as a model system, we examined how Ca2+ and Fe dopants (with mixed Fe3+/Fe2+valencies) influence GB mobility. In Al2O3 doped with Ca below the solubility limit, Ca segregates to grain boundaries and increases the GB mobility, likely through charge-compensating oxygen vacancies....
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Ivar Reimanis (Colorado School of Mines)31/08/2026, 14:10Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Dissolution between $Y_2O_3$ and $CeO_2$ was studied with the goal to understand microstructure and sintering in $CeO_2$-particle reinforced $Y_2O_3$ composites. In one type of experiment the microstructure of composites made by hot pressing and by spark plasma sintering were compared. Subsequent heat treatments in air were performed to study dissolution of $CeO_2$ into $Y_2O_3$. In a second...
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Ms Annalena Erlacher (Empa)31/08/2026, 14:40Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Over the past decades, rapid sintering techniques have expanded access to the density-grain size space by promoting densification over grain growth. This has accelerated progress in non-cubic transparent ceramics, where birefringence makes optical properties highly grain-size sensitive. Beyond this paradigm, rapid sintering enables full densification within minutes or seconds and allows...
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Fabio Torazzi (University of Trento)31/08/2026, 15:00Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Barium zirconate–based perovskites are promising electrolyte materials for proton-conducting electrolysis cells due to their high chemical stability and bulk proton conductivity at intermediate-to-high temperatures. However, their poor sinterability and the strong contribution of grain boundary resistance significantly limit the total conductivity. Understanding microstructure evolution during...
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Akira Hosono (Tohoku University)31/08/2026, 15:20Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Introduction
Titanium-based perovskite-type oxide ceramics for variable resistors [1] are conventionally produced by sintering green compacts in reducing atmospheres at ~1400 °C. We report the use of Na or K metal vapor to obtain conductive ceramics of CaTiO3, SrTiO3, and BaTiO3 below 1000 °C.Experimental
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Powder compacts of CaTiO3,... -
Greg Rohrer31/08/2026, 16:00Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Recent studies of grain growth in polycrystals by three-dimensional high energy X-ray diffraction microscopy have been able to quantify grain boundary migration rates in a variety of materials. One of the principal findings has been that grain boundary curvature is not a good predictor of the direction or speed of grain boundary migration. This presentation will focus on the influence of...
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Dr Andrés Mormeneo (Instituto Universitario de Tecnología de Materiales, Universitat Politècnica de València - Spain)31/08/2026, 16:30Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
ZnO-based ceramics are promising candidates for functional and wear-resistant components due to their combined electrical, optical, and tribological properties. In this work, ZnO composites containing 2.5 wt.% MoS₂ were consolidated using three distinct sintering routes: Microwave Sintering (MW), Spark Plasma Sintering (SPS), and the Cold Sintering Process (CSP), in order to establish how each...
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Roger Fernandes (Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Synchrotron Light Laboratory (LNLS))31/08/2026, 16:50Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Viscous flow sintering is a key route in ceramic processing that promotes particle coalescence driven by surface energy minimization. This process is widely used in industry; it lowers manufacturing temperatures in ceramic processing and increasingly enables advanced photonic technologies. Achieving the desired material properties requires precise control of densification. In non-crystallizing...
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Dr Gaku OKUMA (National Institute for Materials Science)01/09/2026, 13:40Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Synchrotron X‑ray multiscale tomography, combining micro- and nano-tomography, provides high-resolution 3D imaging of heterogeneous microstructures and defects in ceramics. This method reveals how powder heterogeneity, hierarchical structures, and complexity govern defect formation, reliability, and mechanical performance.
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In multilayered ceramics, defects arise from raw powders or during... -
Tomonori Yoshino01/09/2026, 14:10Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Sintering is a microstructure-driven transformation process in which discrete particles reorganize into a dense load-bearing solid. While classical models describe diffusion kinetics, grain growth, and densification behavior, the evolution of microstructural connectivity is rarely treated as a constrained variable. Experimental observations indicate that pore redistribution, contact formation,...
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Mr Lukas Theis (IKMT - Uni Stuttgart)01/09/2026, 14:30Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Microstructure plays a critical role in determining the performance of functional ceramics as the properties of grain boundaries can differ substantially from those of the bulk material. These differences often arise from the segregation of charged defect species during sintering. Such segregated defects form a space charge layer, impeding grain boundary motion due to reduced diffusion rates...
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Ms Wiktoria Krzyżaniak (1) Łukasiewicz Research Network – Poznań Institute of Technology; 2) Faculty of Materials Engineering and Technical Physics, Poznan University of Technology)01/09/2026, 14:50Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
The development of all-solid-state potassium-ion systems depends on solid ionic conductors that provide sufficient ion transport performance. Potassium-beta-alumina is regarded as a relevant candidate; however, its functional behavior is highly sensitive to processing conditions and to the structure of the resulting ceramic material. The presented work investigates the application of the Field...
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Prof. Kyoung-Seok Moon (Gyeongsang National University)01/09/2026, 15:30Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Microstructure plays a key role in governing the functional properties of electronic ceramics. In this study, the relationship among grain growth behavior, crystal structure, and electrical properties is investigated based on the theory of two-dimensional nucleation–controlled grain growth. Perovskite systems, including barium titanate, barium calcium titanate, and sodium potassium niobate,...
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Prof. Zak FANG (University of Utah)01/09/2026, 16:00Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Sintering is one of the main and few approaches for building bulk ultrafine-grain materials from the bottom up. One of the main challenges in sintering nanosized powders is controlling grain growth while achieving full densification. Considerable literature is now available for identifying unique mechanisms that could provide clues to achieving densification with minimal grain growth. It is...
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Romain CHARVET (Université Bourgogne Europe, CNRS, Laboratoire Interdisciplinaire Carnot de Bourgogne ICB UMR 6303, F-21000 Dijon, France)01/09/2026, 16:20Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
The elaboration of metallic parts by powder metallurgy techniques such as SPS, represents a relevant alternative to conventional manufacturing processes. This allows the elaboration in a single stage of dense and high-performance materials with high mechanical properties. One of the major problems during SPS of metallic powders is the carbon diffusion from the graphite tooling, and/or from the...
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Egor Iwaschko (Forschungszentrum Jülich GmbH)01/09/2026, 16:40Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Since the 1960s the use of mixed Pu-/U-oxide ceramic (MOX) increased for nuclear energy production. MOX spent nuclear fuel (SNF) presents strong challgenges for its disposal due to its complexity, high radioactivity and limited research experience. To understand how microstrucutre in MOX ceramics evolves, the development of laboratory-scaled synthesis methods are needed with precise control...
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Laura Silvestroni (CNR-ISSMC)02/09/2026, 09:00Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
A simple method to obtain highly refractory boride-based ceramic nanocomposites is here discussed.
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Fundamental requirement to preserve flexural strength above 500 MPa in the ultra-high temperature regime is to promote the development of a hierarchical structure. This includes core-shell grains, where the shell is a (Zr,Me)B2 solid solution grown around the native MB2 grain, already during... -
Mr Julien Moulin (CEA)02/09/2026, 09:30Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
In nuclear reactors, the fuel consists of uranium dioxide (UO₂) pellets stacked inside zirconium alloy cladding. These pellets must withstand extreme temperatures and pressures while maintaining limited chemical interactions with the cladding, particularly during the migration of fission products from the pellet center to the periphery. One notable example is stress corrosion cracking assisted...
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Dr Flavia Digiacomo (Joint Research Centre Karlsruhe)02/09/2026, 09:50Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Previous investigations demonstrated that micro-sized (U,Pu)O2 (MOX) powders sintered at 1200 °C in a mildly oxidative CO/CO2 atmosphere achieve high density and stoichiometry, yet exhibit limited homogeneity and coarse grain structures compared to conventional sintering at 1700 °C in a reducing H2/H2O environment. Conversely, nano‑sized MOX sintered under reducing conditions at 1700 °C...
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Dr Gabriel Murphy (Forschungzentrum Juelich GmbH - Institute of Nuclear Waste Management)02/09/2026, 10:10Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
A recent reinvigorated shift in interest of nuclear energy, has resulted in demand for enhanced new nuclear fuel ceramics which possess enhanced safety and efficiency margins, to increase energy output and reduce spent nuclear fuel inventories. In industry, this has primarily been achieved through the doping of UO2 with Al, Cr and Al/Cr mixtures a part of so-called “accident tolerant nuclear...
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Kaline Pagnan Furlan (Karlsruhe Institute of Technology (KIT), Institute for Applied Materials, Ceramic Materials and Technologies (IAM-KWT))02/09/2026, 10:50Microstructure evolution during sintering and Microstructure-property relationships2. Invited speaker (by invitation only)
Macroporous ceramics are interesting for a wide range of applications, including catalysis, sensing, photonics, biomedicine, and energy conversion. Many applications require materials that retain their intricate porous architecture at high temperatures, where sintering-related transformations can otherwise degrade structural integrity and functionality. In this talk, I will present metal-oxide...
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Jang-Hoon Ha (Korea Institute of Materials Science)02/09/2026, 11:20Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Porous ceramics are widely studied for their superior thermal and chemical stability compared to porous metals and polymers. Reticulated porous ceramics, in particular, offer low density and high permeability, making them promising for air filtration, although their relatively low compressive strength still limits broader application. Porous ceramic membranes have also gained importance in...
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TAEHYUN HWANG, Dr Jae-Hwan KIM (National Institutes for Quantum Science and Technology,)02/09/2026, 11:40Sintering of specific material systems3. Oral presentation
JA demonstration (DEMO) fusion power reactors have adopted an advanced blanket design loaded with advanced neutron multiplier, beryllium intermetallic compounds (beryllides, in specific, Be12Ti) due to their low swelling, high thermal conductivity, and high stability at high temperatures. Advanced neutron multipliers are being developed by Japan and the EU as part of their Broader Approach...
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Jie Chen02/09/2026, 12:00Microstructure evolution during sintering and Microstructure-property relationships3. Oral presentation
Self-passivating Metal Alloys with Reduced Thermo-oxidation (SMART) with a composition of W-11.4Cr-0.4Zr-0.6Y (in wt.%) are promising candidate materials for first wall applications in fusion reactors. Previous studies have demonstrated the oxidation resistance of SMART alloys at 1000 °C in humid air. However, these investigations were limited to small-scale specimens.
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In this study, results...
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