Results 41 to 50 of about 58,048 (311)

Small and meso-scale properties of a substorm onset auroral arc

, 2010
International audienceWe present small and meso-scale properties of a substorm onset arc observed simultaneously by the Reimei and THEMIS satellites together with ground-based observations by the THEMIS GBO system.
Whiter, D., J. Weygand, Frey, H.U., H. U. Frey, N. Østgaard, B. Lanchester, Sakanoi, T., Seran, Elena, S. Fu, Frey, H., Ostgaard, N., Asamura, K., Weygand, J., T. Karlsson, Karlsson, T., Amm, O., Chaston, C., Haerendel, G., Seran, E., G. Haerendel, C. C. Chaston, Chaston, C.C., L. Juusola, Nakamura, R., Fu, S., O. Amm, Østgaard, N., Chaston, C. C., M. Hirahara, Lanchester, B., D. Whiter, Juusola, L., T. Sakanoi, E. Séran, Frey, H. U., K. Asamura, Hirahara, M., R. Nakamura, Karlsson, Tomas,   +38 more
core   +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

Plasma-Pulsed GMAW Hybrid Welding Process of 6061 Aluminum and Zinc-Coated Steel

Crystals, 2023
A novel plasma-pulsed GMAW hybrid welding (plasma-GMAW-P) process is proposed for joining 6061 aluminum and zinc-coated steel. The results show that the change in welding heat input has little effect on the microstructure of the joint and the composition
Hongchang Zhang, Wenhu He, Huaibei Zheng, Jiang Yu, Hongtao Zhang, Yinan Li, Jianguo Gao, Zhaofang Su   +7 more
doaj   +1 more source

Desenvolvimento de reator de plasma AC aplicado à conversão de hidrocarbonetos [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014.A degradação do meio ambiente está ligada à ação direta do homem através de atividades ...
Cassini, Felipe Antonio
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Effect of torch angle on arc properties and weld pool shape in stationary GTAW

, 2013
In this paper, a three dimensional numerical simulation is performed on a stationary arc to study the effect of torch angle in gas tungsten arc welding (GTAW) of SS304 stainless steel.
Parvez, Shahid, Fawad, H., Abid, Muhammad, Nash, David, Galloway, Alexander   +4 more
core   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Desenvolvimento e aplicação de soldagem plasma pela tecnica Keyhole [PDF]

, 1997
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro TecnologicoInvestigação relacionada a soldagem plasma pela técnica keyhole, destacando-se alguns aspectos operacionais e metalúrgicos inerentes ao processo. Utilizou-se como material
Paula Júnior, Odir Silva de
core  

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Dual-constricted plasma arc cladding of Inconel 625 alloy: arc characteristics, microstructure, and corrosion resistance

Journal of Materials Science: Materials in Engineering
Inconel 625 alloy exhibits high strength, fabricability, and resistance to corrosion. Cladding processes including laser cladding, arc welding-based cladding, and plasma arc cladding have been applied to deposit the Inconel 625 layer with metallurgical ...
Xinyi Shi, Yuxin Liu, Mengqing Zhang, Zhe Sun   +3 more
doaj   +1 more source

Arc Shape Characteristics with Ultra-High-Frequency Pulsed Arc Welding

Applied Sciences, 2017
Arc plasma possesses a constriction phenomenon with a pulsed current. The constriction is created by the Lorentz force, the radial electromagnetic force during arc welding, which determines the energy distribution of the arc plasma.
Mingxuan Yang, Hao Zheng, Ling Li
doaj   +1 more source