Article
Nanoscience & Nanotechnology
Ning Fang, Chunming Zou, Zunjie Wei, Hongwei Wang, Rong Zhang, Zheng Ran, Tao Chang
Summary: Increasing solidification pressure leads to reduced SDAS and transformation of eutectic Si morphology in Al alloys. The high pressure promotes the formation of nano-sized particles, enhances hardness and compressive strength, with alloys solidified at 4 GPa showing the highest mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Markus Mohr, Douglas C. Hofmann, Hans-Joerg Fecht
Summary: Iron-based metallic glasses are a low-cost form of amorphous metals with potential applications, such as wear-resistant coatings and cutting tools. Computer-based process simulations are vital for accelerated development, and high-quality measurements of thermophysical properties are essential for developing numerical simulation models. Containerless methods are required for measuring the high melt reactivity of liquid metals at high temperatures.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Rada Novakovic, Donatella Giuranno, Joonho Lee, Markus Mohr, Simona Delsante, Gabriella Borzone, Fabio Miani, Hans-Joerg Fecht
Summary: The surface/interfacial tension, viscosity, and density/molar volume of liquid alloys are key properties for modeling microstructural evolution during solidification. However, measuring these properties is difficult due to reactivity at high temperatures, leading to unreliable or missing data. Containerless processing techniques improve accuracy, while experimental data can be used for model validation and data compensation.
Article
Materials Science, Multidisciplinary
Yusuf Kaygisiz, Cetin Palta, Sevda Engin
Summary: The study investigated the effects of adding different proportions of Cr to the Al-Si-Mg eutectic alloy and applying heat treatment on the microstructure, morphology, and mechanical properties of the alloy. The results showed that Cr addition resulted in the formation of new phases in the alloy, such as CrSi2 and Al9FeMg3Si5 intermetallic phases. The hardness and tensile strength of the alloy increased significantly after heat treatment. Additionally, Cr enhanced the electrical resistance of the alloy.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Umit Bayram
Summary: Directional solidification was performed on an Al-11.75 wt pct Si-2.15 wt pct Ti irregular eutectic alloy with different growth rates. It was found that the interflake spacing decreased with increasing growth rates. The fusion enthalpy and heat difference between solid and liquid phases were measured by DSC.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2022)
Article
Physics, Applied
H. M. Chen, G. X. Li, J. F. Zhao, H. P. Wang
Summary: The thermophysical properties of Si-Ge-Ag alloys were studied, including specific heat, thermal expansion, and thermal conductivity. Relationships between these properties and temperature as well as chemical composition were clarified. Experimental results showed that the specific heat and thermal conductivity of the alloys were influenced by lattice vibration, electronic scattering, and microstructure.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Manufacturing
Pin Yang, Kyle L. Johnson, Jay D. Carroll, Jessica L. Buckner, Mia A. Blea-Kirby, Catherine Groves, Eric N. Coker
Summary: This study measured the thermophysical properties of additively manufactured and heat-treated Ti-5553 alloy, and compared them to microstructural features. The results indicate that processing and heat treatment variations have little impact on the thermal conductivity of the alloy, presumably due to its heavy alloying effect.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Physical
Yuan Huang, Shaoying Ke, Jianfei Chai, Rongfei Wang, Feng Lin, Chong Wang
Summary: High-quality Si/Si and Ge/Si wafer bonding is achieved by introducing an ultra-thin microcrystalline Ge interlayer. The bonded wafers with high-crystallinity Ge interlayer can effectively transfer and absorb bubbles, resulting in bubble-free and oxide-free bonded interfaces. A carrier recombination model is constructed to describe the carrier migration behaviors at the bonded interface. This work provides a practical and simple method for fabricating high-quality bonding materials, which is of great significance for the development of micro-electronics devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Crystallography
Dandan Zhao, Yang Cui, Jing Li, Lin Zhang
Summary: Molecular dynamics simulations were used to study the structural and mechanical properties of Si/Ge core-shell nanowires at different temperatures. The results showed that temperature and strain have a significant effect on the performance of these nanowires, and the core-shell ratio affects the Young's modulus.
Article
Crystallography
Andras Roosz, Arnold Ronafoldi, Yuze Li, Nathalie Mangelinck-Noel, Gerhard Zimmermann, Henri Nguyen-Thi, Maria Sveda, Zsolt Veres
Summary: In this study, solidification experiments were conducted on the International Space Station to investigate the effect of solidification parameters on the grain structure and dendritic microstructure of Al-Si alloy. The analysis also focused on the macrosegregation caused by diffusion and the distribution of eutectic along the solidification direction. The results showed good agreement between the experimental and simulated data.
Review
Materials Science, Multidisciplinary
R. Basu, A. Singh
Summary: Silicon-Germanium is a proven alloy with wide applications in technology, but faces challenges. Solid-state synthesis overcomes homogeneity issues with high yield and environmental friendliness. Strategies to reduce thermal conductivity and explore new methods are crucial for improving performance metrics.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Physical
L. Hu, Y. J. Jin, M. J. Lin, B. Wei
Summary: The thermophysical properties of N36 type Zr-Sn-Nb-Fe alloy were studied within a temperature range of 1750-2250 K. The addition of alloying elements led to an increase in specific heat, surface tension, and viscosity. Both surface tension and viscosity displayed larger changes with temperature compared to Zr.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Ning Fang, Chunming Zou, Zunjie Wei, Hongwei Wang, Xuejian Zhang, Tao Chang
Summary: The addition of Ge accelerates the aging response of Al-Si-Cu alloy by forming Si-Ge particles that act as heterogeneous nucleation sites for 0?-Al2Cu phases, while the addition of Mg results in the early precipitation of Q?-Al5Cu2Mg8Si6 phases in the alloy. The combined addition of both Ge and Mg leads to the formation of Mg2Ge phases and an accelerated aging response, providing increased strength to the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Ning Fang, Chunming Zou, Zunjie Wei, Hongwei Wang, Tao Chang, Jiahan Chen
Summary: Al-7Si-3Cu-0.5Ge-0.4Mg alloy solidified under high pressure exhibited higher strength and better ductility, which could be attributed to the beneficial strengthening effects provided by Mg2Si(Ge) particles and the inhibition of crack propagation by nano-sized Al particles in eutectic Si.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rui-min Shi, Zhi Wang
Summary: This study investigates the effects of partially substituting Ge for Fe in Fe-based nanocrystalline alloys for improving magnetic properties at high temperatures. The results show that Ge concentration plays a key role in nanocrystallization and Curie temperature.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Physics, Multidisciplinary
Kaikin Wong, Changjiu Chen, Michael Marek Koza, Konrad Samwer, Suresh Mavila Chathoth
Article
Chemistry, Multidisciplinary
Kaikin Wong, Changjiu Chen, Kong Wei, V. A. L. Roy, Suresh M. Chathoth
JOURNAL OF NANOPARTICLE RESEARCH
(2015)
Article
Chemistry, Multidisciplinary
Changjiu Chen, Kaikin Wong, Rithin P. Krishnan, Jan P. Embs, Suresh M. Chathoth
Article
Materials Science, Multidisciplinary
Kaikin Wong, Rithin P. Krishnan, Eric M. Dufresne, Koji Ohara, Alec R. Sandy, Suresh M. Chathoth
Article
Physics, Applied
Changjiu Chen, Kaikin Wong, Rithin P. Krishnan, Jan P. Embs, Suresh M. Chathoth
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2018)
Article
Multidisciplinary Sciences
Kaikin Wong, Rithin P. Krishnan, Changjiu Chen, Qing Du, Dehong Yu, Zhaoping Lu, K. Samwer, Suresh M. Chathoth
SCIENTIFIC REPORTS
(2018)
Article
Chemistry, Physical
E. Mamontov, H. O'Neill, Q. Zhang, S. M. Chathoth
Article
Physics, Multidisciplinary
S. M. Chathoth, E. Mamontov, P. F. Fulvio, X. Wang, G. A. Baker, S. Dai, D. J. Wesolowski
Article
Physics, Multidisciplinary
Yuxiang Huang, Wong K. Kin, Si Lan, Jan P. Embs, Du Qing, Zhaoping Lu, Xun-Li Wang, Suresh M. Chathoth
Article
Chemistry, Physical
Suresh M. Chathoth, Daniela M. Anjos, Eugene Mamontov, Gilbert M. Brown, Steven H. Overbury
JOURNAL OF PHYSICAL CHEMISTRY B
(2012)
Article
Chemistry, Physical
Hugh O'Neill, Suresh Mavila Chathoth, Mateus B. Cardoso, Gary A. Baker, Eugene Mamontov, Volker S. Urban
JOURNAL OF PHYSICAL CHEMISTRY C
(2012)
Article
Physics, Condensed Matter
Katherine L. Van Aken, John K. McDonough, Song Li, Guang Feng, Suresh M. Chathoth, Eugene Mamontov, Pasquale F. Fulvio, Peter T. Cummings, Sheng Dai, Yury Gogotsi
JOURNAL OF PHYSICS-CONDENSED MATTER
(2014)
Article
Materials Science, Multidisciplinary
S. M. Chathoth, M. M. Koza, A. Meyer
MATERIALS CHEMISTRY AND PHYSICS
(2012)
Article
Chemistry, Applied
Lilin He, Suresh M. Chathoth, Yuri B. Melnichenko, Volker Presser, John McDonough, Yury Gogotsi
MICROPOROUS AND MESOPOROUS MATERIALS
(2012)
Article
Chemistry, Applied
S. M. Chathoth, L. He, E. Mamontov, Y. B. Melnichenko
MICROPOROUS AND MESOPOROUS MATERIALS
(2012)