Results 61 to 70 of about 3,631,969 (388)
Advanced Engineering Materials, EarlyView.Cr0.9Si0.1 protective coatings are developed to enhance the thermal‐shock and oxidation resistance of Mg2Si0.89(Sn0.1,Sb0.01) thermoelectric (TE) materials. The coating forms a dense and adherent barrier that suppresses oxygen diffusion and mitigates mechanical degradation during cyclic oxidation, demonstrating its potential to improve the long‐term ...
Mikdat Gurtaran +3 more
wiley +1 more source
Energies, 2022 Improving thermal efficiency and reducing carbon emissions are the permanent themes for internal combustion (IC) engines. In the past decades, various advanced strategies have been proposed to achieve higher efficiency and cleaner combustion with the ...
Rami Y. Dahham, Haiqiao Wei, Jiaying Pan
doaj +1 more source
Energy dissipation bounds for autonomous thermodynamic cycles [PDF]
Proceedings of the National Academy of Sciences, 2020 SignificanceThe second law states that on average, it is impossible for a process to reduce the entropy of the universe. Recent progress has strengthened this inequality by quantifying the dissipation associated with various scenarios. Moving a thermodynamic system dissipates energy because the system is pushed out of equilibrium, quantified by ...
Samuel J. Bryant, Benjamin B. Machta
openaire +4 more sources
, 2020 Supercritical CO2 power cycles have been deeply investigated in recent years. However, their potential in waste heat recovery is still largely unexplored.
Liuchen Liu, Qiguo Yang, Guomin Cui
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi +3 more
wiley +1 more source
Evaluating quantum alchemy of atoms with thermodynamic cycles: Beyond ground electronic states [PDF]
, 2021 Emily A. Eikey +4 more
openalex +3 more sources
Aerospace, 2023 As the issue of pollutant emissions from aviation propulsion escalates, research into alternative powertrains is gaining momentum. Two promising technologies are the Hybrid Electric Propulsion System (HEPS) and Pressure Gain Combustion (PGC).
Dongsuk Kim, Majid Asli, Klaus Höschler
doaj +1 more source
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 +4 more
wiley +1 more source
THERMODYNAMICAL EFFICIENCY OF A DETONATION ENGINE
Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018 An attempt has been made to analyze qualitatively and quantitatively the thermodynamic cycle of detonative combustion and to compare it with the Otto and Brayton cycles in order to establish the degree of its thermodynamic perfection. A comparison of the
Alhussan Khaled +3 more
doaj +1 more source
The effect of heat recovery on the optimal values of helicopter turboshaft engine parameters
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020 Recent studies related to fuel economy in air transport conducted in our country and abroad show that the use of recuperative heat exchangers in aviation gas turbine engines can significantly, by up to 20...30%, reduce fuel consumption.
H. H. Omar +3 more
doaj +1 more source