Results 31 to 40 of about 15,447 (260)

Pseudo-Landau levels splitting triggers quantum friction at folded graphene edge

Nature Communications
From the construction of monumental pyramids to the manipulation of minuscule molecules, the utilization of friction has been inevitable, thereby driving rapid technological advancement.
Xinchen Gao, Zhenbin Gong, Hongli Li, Zhao Liu, Weishan Yan, Qingkai Zheng, Kexin Ren, Wenchao Wu, Junyan Zhang   +8 more
doaj   +1 more source

Influence of binder systems on sintering characteristics, microstructures, and mechanical properties of PcBN composites fabricated by SPS

Journal of Advanced Ceramics, 2022
Cubic boron nitride (cBN) with high hardness, thermal conductivity, wear resistance, and chemical inertness has become the most promising abrasive and machining material.
Shuna Chen, Hengzhong Fan, Yunfeng Su, Wensheng Li, Jicheng Li, Bing Yan, Junjie Song, Litian Hu, Yongsheng Zhang   +8 more
doaj   +1 more source

The Current State of Environmentally Acceptable Lubricants in Stern Tube Lubrication: A Review

Journal of Tribology
Abstract To reduce environmental pollution from maritime transportation, the mandatory use of environmentally acceptable lubricants (EALs) at all seawater–oil interfaces was introduced through various legislative measures. However, the transition from mineral oils to EALs in the case of stern tube lubrication systems was accompanied by ...
Stavárek, P. (Petr), Jaklová, N. (Natalie), Večeř, M., Zelenka, L., Bernat, S., Armada, S., Alnest, Ø.   +6 more
openaire   +2 more sources

Team Building and Sustainability of Lubricant Firms in Anambra State

International Journal of Research and Review, 2023
In the dynamic landscape of the global economy, traditional hierarchical organizational structures are facing challenges in maintaining competitiveness, adaptability, and sustainability. This study delves into the crucial role of team building in nurturing sustainability, productivity, and cohesive relationships among employees, particularly within ...
Okafor, Joy Ndidiamaka, Marcel Chinemeze, Onuorah, Anthonia Ngozi   +2 more
openaire   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Mo content-depended competition between Cr2O3 enrichment and selective dissolution of CoCrFeNiMo x high entropy alloys

npj Materials Degradation, 2022
The corrosion and passivation behavior of the as-cast CoCrFeNiMo x (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) high entropy alloys (HEAs) are investigated. With the addition of Mo, increasing Mo and Cr riched σ phase precipitates from the primary FCC phase. The
Qian Hu, Cheng-Ping Ye, Shang-Chen Zhang, Xian-Zong Wang, Cheng-Feng Du, Haifeng Wang   +5 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Ultrastrong eutectogels engineered via integrated mechanical training in molecular and structural engineering

Nature Communications
Ultrastrong gels possess generally ultrahigh modulus and strength yet exhibit limited stretchability owing to hardening and embrittlement accompanied by reinforcement.
Chenggong Xu, Ao Xie, Haiyuan Hu, Zhengde Wang, Yange Feng, Daoai Wang, Weimin Liu   +6 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source