Results 61 to 70 of about 27,104 (282)

Elastic Models for the Non-Arrhenius Relaxation Time of Glass-Forming Liquids [PDF]

, 2006
We first review the phenomenology of viscous liquids and the standard models used for explaining the non-Arrhenius average relaxation time. Then the focus is turned to the so-called elastic models, arguing that these models are all equivalent in the ...
Dyre, Jeppe C.
core   +2 more sources

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

High-entropy diboride: A novel high-temperature self-lubricating ceramic with enhanced mechanical and tribological properties

Journal of Advanced Ceramics
Ceramic-based lubrication materials are among the best choices for solving high-temperature load-bearing and lubrication problems. However, traditional ceramics achieve self-lubrication by adding lubricating phases, which often leads to significant ...
Jicheng Li, Yunfeng Su, Shuna Chen, Hengzhong Fan, Xiande Zheng, Qiuan Sun, Junjie Song, Litian Hu, Yongsheng Zhang   +8 more
doaj   +1 more source

Nitride‐Reinforced Metal Matrix Nanocomposite Powders Production by Plasma‐Assisted Thermochemical Treatment of Intermetallic Powders

Advanced Engineering Materials, EarlyView.
This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim, Antônio Rogério de Souza, Tatiana Bendo, Aloisio Nelmo Klein, Rodrigo Perito Cardoso   +4 more
wiley   +1 more source

Effect of activating additives on the cold sintering process of (MnFeCoNiCu)₃O₄ high-entropy ceramics

Тонкие химические технологии, 2022
Objectives. To obtain experimental data on the effect of activating additive type on the cold sintering process of (MnFeCoNiCu)3O4 high-entropy ceramic. The following substances were used as activating additives: ammonium acetate (CH3COONH4), acetic acid
A. V. Smirnov, Yu. D. Ivakin, M. V. Kornyushin, A. A. Kholodkova, A. A. Vasin, S. Ayudinyan, H. V. Kirakosyan   +6 more
doaj   +1 more source

Electronic and Lattice Dynamical Properties of Ti2SiB MAX Phase

, 2018
The structural, electronic, mechanic, vibrational and thermodynamic properties of Ti2SiB which is a hypothetical MAX phase compound, have been investigated using density functional theory calculations.
Gencer, Aysenur, Surucu, Gokhan
core   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Design and selection of metal matrix composites reinforced with high entropy alloys – Functionality appraisal and applicability in service: A critical review

Journal of Alloys and Metallurgical Systems
Metal matrix composites (MMCs) reinforced with high entropy alloy particulates (HEAps) are a new class of metal-matrix composites that have the promise to meet the demanding requirements of nascent technological applications.
Sodiq Abiodun Kareem, Justus Uchenna Anaele, Emmanuel Omosegunfunmi Aikulola, Tolulope Akinkunmi Adewole, Michael Oluwatosin Bodunrin, Kenneth Kanayo Alaneme   +5 more
doaj   +1 more source

Heat transfer enhancement with gas-to-gas micro heat exchangers [PDF]

, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014), Brandner, JJ, Dittmeyer, R, Gerken, I   +3 more
core  

High-pressure neutron study of the morphotropic PZT: phase transitions in a two-phase system [PDF]

, 2012
In piezoelectric ceramics the changes in the phase stabilities versus stress and temperature in the vicinity of the phase boundary play a central role. The present study was dedicated to the classical piezoelectric, lead-zirconate-titanate (PZT) ceramic ...
A. M. Asiri, A. Y. Obaid, I. A. Mkhalid, J. Frantti, J. Zhang, Jaffe B., Larson A. C., Newnham R. E., R. M. Nieminen, S. C. Vogel, S. Wang, Y. Fujioka, Y. Zhao   +12 more
core   +2 more sources