Results 111 to 120 of about 245,180 (301)

Multilayer WNbN/WNbC, WN/WC and NbN/NbC Coatings: Vacuum-Arc Deposition Strategy and Microstructure Assessment

open access: yesEast European Journal of Physics
Reactive gases such as nitrogen, oxygen, and carbon-based gases (e.g., acetylene) are introduced into the generated plasma flow to create coatings with chemical compounds including nitrides, oxides, and carbides. By managing the rate of gas addition, the
O.V. Maksakova   +8 more
doaj   +1 more source

Targeted Phototherapy by Niobium Carbide for Mammalian Tumor Models Similar to Humans. [PDF]

open access: yesFront Oncol, 2022
Liu Z   +8 more
europepmc   +1 more source

High temperature protective coatings for refractory metals Final technical report [PDF]

open access: yes
High temperature protective coatings of iridium on tantalum, niobium, molybdenum, and ...
Rexer, J.
core   +1 more source

Enhancing the d–Electrocatalytic Activity of MXene Through Defect Engineering

open access: yesCarbon Energy, EarlyView.
Applications of MXene. ABSTRACT Due to their versatile and tunable surface and bulk chemistry, MXenes have great potential as electrocatalysts for batteries and supercapacitors. When compared with other electrocatalytic processes, in electrocatalytic reactions, MXenes could improve ion diffusion and charge transfer by either providing functional groups
Chenxue Wang   +4 more
wiley   +1 more source

Functionalizing Conductive Diamond: Recent Advance in Fabrication, Modifications, and Applications

open access: yesCarbon Energy, EarlyView.
This review highlights recent advancements in the synthesis, modification, and electrochemical applications of conductive diamond, particularly boron‐doped diamond (BDD). It emphasizes progress in fabrication methods, including CVD and HPHT, and explores modifications such as doping, surface terminations, and composite design, enabling significant ...
Ning Linghu, Xin Jiang, Jing Xu
wiley   +1 more source

Graphite-metal composites Quarterly report no. 1, 1 Aug. - 1 Nov. 1965 [PDF]

open access: yes
Graphite-metal composites - hot pressing equipment modifications, hot pressing of calcined petroleum coke, and heterogeneity in density of niobium, hafnium, and molybdenum ...
Harada, Y.
core   +1 more source

Fibrous Growth of Niobium Carbide and Niobium Nitride by Discharge Method

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1971
炭化ニオブおよび窒化ニオブ繊維を五塩化ニオブ, 水素, アルゴン, プロパンまたは窒素混合気中より放電を利用して成長させる条件について検討した。放電電流および交流周波数はそれぞれ 0.05~3.OmAおよび60Hzとした。繊維の成長にさいして極間距離を一定に保つように電極を移動した。成長速度は主として放電電流に関係して, 0.05~0.1mAのとき最大の成長速度約 30mm/minを示し, 繊維の直径は最小値7~13μを示した。最適の反応器温度およびアルゴン濃度はそれぞれ 400℃および 80~90vol% であることがわかった。五塩化ニオブ, プロパンまたは窒素濃度は成長した繊維の組成に影響を与え, 食塩型構造の金属相を含まない炭化ニオブおよび窒化ニオブはそれぞれプロパン濃度 0.9vol ...
Takehiko TAKAHASHI   +2 more
openaire   +2 more sources

Structural Design of MOF‐Based and MOF‐Derived Composites for Oxygen Evolution Electrocatalysis: Materials Innovation for Energy and Environmental Sustainability

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review provides an overview of recent developments in metal organic framework (MOF)‐based and MOF‐derived composites for efficient oxygen evolution reaction. This review also emphasizes the structural design of electrocatalyst, active site optimization, and emerging prospects of their use in practical electrolyzer systems.
Bhagyashri B. Kamble   +7 more
wiley   +1 more source

A Comparative Study of Tool Wear for Niobium Carbide and Tungsten Carbide-Based Cutting Materials in Dry Cylindrical Turning

open access: yesJournal of Machine Engineering
Using niobium carbide (NbC) for cutting materials is a promising alternative to tungsten carbide (WC) based cutting materials for metal machining due to the inherent material properties of NbC.
Eckart Uhlmann, Christoph Schneider
doaj   +1 more source

Advanced materials for space nuclear power systems [PDF]

open access: yes
The overall philosophy of the research was to develop and characterize new high temperature power conversion and radiator materials and to provide spacecraft designers with material selection options and design information.
Ellis, David L.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy