Results 51 to 60 of about 24,276 (294)

Mixture on Tungsten Production from Tungsten Sulfide

, 2023
Tungsten powder production from its sulfide by constant voltage electrochemical reduction was studied in CaCl2-NaCl salt solutions by varying composition at 750 °C.
I. Karakaya, ERDOĞAN, METEHAN, Karakaya, İshak, M. Erdogan, O. Yilmaz, Yılmaz, Oğuzhan   +5 more
core   +1 more source

Rhizobium symbiosis improves amino acid and secondary metabolite biosynthesis of tungsten-stressed soybean (Glycine max)

Frontiers in Plant Science
The industrially important transition metal tungsten (W) shares certain chemical properties with the essential plant micronutrient molybdenum and inhibits the activity of molybdoenzymes such as nitrate reductase, impacting plant growth.
Julian Preiner, Irene Steccari, Eva Oburger, Stefanie Wienkoop   +3 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

Reactions of Hydrido(hydrosilylene)tungsten Complexes with α,β-Unsaturated Carbonyl Compounds:  Selective Formation of (η³-Siloxyallyl)tungsten Complexes

, 2016
Hydrido(hydrosilylene)tungsten complexes (C5Me4R)(CO)2(H)WSi(H)[C(SiMe3)3] [R1 = Me (1a), R1 = Et (1b)] reacted with α,β-unsaturated carbonyl compounds RC(O)CHCHR (R2 = Me, R3 = H or Ph; R2 = OMe, R3 = H) at room temperature to give exo-anti (η3 ...
Hiromi Tobita (1362822), Hisako Hashimoto (1662574), Takahito Watanabe (1525429)   +2 more
core   +4 more sources

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

The effects of alumina reinforcement and nickel activated sintering on nanosized tungsten matrix

, 2017
In this work, the effects of aluminum oxide reinforcement and Ni activated sintering on nanosized tungsten matrix was investigated by analysis obtained W compacts sintered at 1400 degrees C for 1 h.
Sun, Zhiqiang, Yuan, Fangli, Hu, Peng, Li, Baoqiang, Hou, Guolin, Ding, Fei   +5 more
core   +1 more source

Room Temperature Ethanol Microsensors Based on Silanized Tungsten Oxide Nanowires

Proceedings, 2018
Gas microsensors based on tungsten oxide (WO3-x) nanowires (NWs) silanized with APTES (3-aminopropyltriethoxysilane) are developed in this work.
Stella Vallejos, Zdenka Fohlerová, Milena Tomić, Isabel Gràcia, Eduard Figueras, Carles Cané   +5 more
doaj   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Tungsten η¹-Five-Membered Oxygenated Heterocycles Derived from Tungsten η¹-Propargyl Compounds:  Systematic Syntheses, Structural Rearrangement, Electrophilic Alkylations, and Oxidative Demetalations

, 2016
In the presence of BF3·Et2O, tungsten η1-propargyl complexes reacted smoothly with aldehydes to give tungsten η1-2,5-dihydro-3-furyl complexes 1−3. Treatment of 1−3 with Ph3CBF4 in CH2Cl2 (−60 °C, 1 h) delivered tungsten η1-3-furylidene complexes 4−6 ...
Shie-Ming Peng (1425703), Shin-Hwan Wang (2994540), Hsin-Guo Shu (2994543), Lin-Hung Shiu (2994537), Gene-Hsian Lee (2092816), Sue-Lein Wang (2072275), Rai-Shung Liu (1393513)   +6 more
core   +2 more sources

Polyoxotungstates in Molecular Boxes of Purine Bases

Crystals, 2014
Three new compounds, (GuaH)4[W10O32](H2O)4 (1), (ThbH)3(H3O)[(W10O32](H2O)7.5 (2) and (ThbH)2[W6O19](H2O)2 (3) (GuaH = guaninium, thbH = theobrominium) were synthesized in acidified acetonitrile solutions.
Vladislav Kulikov, Gerd Meyer
doaj   +1 more source