Results 121 to 130 of about 52,062 (306)

Heating Furnace Charging Optimization of Hot Rolled Round Billet 4145H Φ600 mm for Petroleum Drill Collars

Teshugang, 2023
Taking 4145H hot-rolled round steel used for oil drill collars as the research object， under the condition of high temperature （870-920 ℃） in the preheating section of the heating furnace， a warm delivery and charging process is designed： the surface ...
Zhang Xinwen, Xuan Kangle, Meng Xiangyan, Shi Jiakai, Liu Yong   +4 more
doaj  

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

Enhanced Spacecraft Charging Risks by Interplanetary Alfvén Waves During Geomagnetic Storms

Space Weather
Spacecraft surface charging, an important issue in space weather research, is investigated in this study for its susceptibility to Alfvén waves (AW) during geomagnetic storms. The investigation reveals a pronounced increase in spacecraft charging risk in
Hui Li, Xiaodong Liu, Chi Wang
doaj   +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

Porous polytetrafluoroethylene (PTFE) electret films : porosity and time dependent charging behaviour of the free surface

, 2006
Electrically charged porous polytetrafluoroethylene (PTFE) films are often discussed as active layers for electromechanical transducers. Here, the electric charging behavior of open-porous PTFE films with different porosities is investigated.
Wegener, Michael, Tiersch, Brigitte, Wirges, Werner (Dipl.-Ing.)   +2 more
core   +1 more source

Testing spacecraft charging predictions as Parker Solar Probe approaches the Sun

Astronomy & Astrophysics
Context. Surface charging must be carefully simulated and predicted for any spacecraft, but especially for those encountering highly variable plasma environments, such as spacecraft near the Sun.
Lee-Bellows D., Malaspina D., Ergun R., Deca J., Diaz-Aguado M., Liu M., Bonnell J.   +6 more
doaj   +1 more source

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

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Size-Dependent Surface Charging of Nanoparticles

, 2016
Experimental interest in the possible curvature dependence of particle charging in electrolyte solutions is subjected to theoretical analysis. The corrected Debye−Hückel theory of surface complexation (CDH-SC) and Monte Carlo (MC) simulation are applied ...
Elisabet Ahlberg (1283130), Zareen Abbas (1351452), Sture Nordholm (1921096), Christophe Labbez (1791382)   +3 more
core   +1 more source

Optimization of blast furnace charging modes based on changes in gas flow temperatures

Discover Mechanical Engineering
The article describes the means of monitoring the surface of the charge materials and the gas flow of the upper zone of the blast furnace (BF), necessary for assessing and adjusting the charging modes with charge materials.
Yurii Semenov, Ievhen Shumelchyk, Serhii Vashchenko, Viktor Horupakha, Oleksandr Khudyakov   +4 more
doaj   +1 more source