Results 41 to 50 of about 245,180 (301)

Investigation of Strain-Induced Precipitation of Niobium Carbide in Niobium Micro-Alloyed Steels at Elevated Temperatures

Metals, 2022
Two steels with a base composition of Fe-0.2C-0.8Mn-1.2Cr (wt%) but with different niobium (Nb) contents (0.02 and 0.03 wt%) were employed to study the effect of precipitate evolution on the softening resistance in the austenite region under elevated ...
Tzu-Ching Tsao, Po-Han Chiu, Chien-Yu Tseng, Cheng-Lin Tai, Hsueh-Ren Chen, Tsai-Fu Chung, Chih-Yuan Chen, Shing-Hoa Wang, Yu-Ting Tsai, Jer-Ren Yang   +9 more
doaj   +1 more source

Enrichment of ferroniobium from Bayan Obo tailings using selective carbonization roasting and magnetic separation

Journal of Materials Research and Technology
This research presents a novel approach to beneficiate ferroniobium from Bayan Obo tailings (BOT) by combining selective carbonization roasting with magnetic separation.
Shaoyang Chang, Mingjun Rao, Boqi Wang, Tao Jiang, Guanghui Li, Zhao Yang, Zhongshuai Jia   +6 more
doaj   +1 more source

Layered Nano‐Mosaic of Niobium Disulfide Heterostructures by Direct Sulfidation of Niobium Carbide MXenes for Hydrogen Evolution

Advanced Materials Interfaces, 2022
MXene‐transition metal dichalcogenide (TMD) heterostructures are synthesized through a one‐step heat treatment of Nb2C and Nb4C3. These MXenes are used without delamination or any pre‐treatment.
S. Husmann, Mohammad Torkamanzadeh, Kun Liang, Ahmad Majed, Chaochao Dun, J. Urban, Michael Naguib, V. Presser   +7 more
semanticscholar   +1 more source

Changes in the acid resistance of erythrocytes upon contact with TiC, TiN, Ti-Nb, Ti-Zr and Ti-Ta compositions

Russian Open Medical Journal
Background — There is a high demand for new implant materials in traumatology, orthopedics and dentistry. Biodegradation of titanium alloys leads to undesirable effects that reduce the quality of life in patients with implants.
Petr A. Ilchenko, Elena N. Sazonova, Alexander A. Burkov   +2 more
doaj   +1 more source

Effect of graphene and niobium carbide on microstructure and mechanical properties of Ni60 composite coatings prepared by laser cladding

Journal of Materials Research and Technology
Niobium carbide (NbC) is often used as a reinforcing phase to improve the mechanical properties of composite coatings, but its low thermal conductivity makes the flow of molten pool poor, and the cladding layer is prone to defects such as non-fusion and ...
Ziyu Zhang, Zhaoqiang Chen, Yuying Yang, Wenhao Zhang, Haitao Cui, Xiu Zheng, Xiaoyu Mu, Chonghai Xu   +7 more
doaj   +1 more source

Influence of Niobium Addition on Microstructure and Machinability of High Chromium Cast Iron

Materials Research, 2021
High Chromium Cast Iron (HCCI) is mostly utilised in environments under severe abrasion and corrosion wear conditions, and research on this material with added niobium obtained positive results regarding wear resistance.
Anderson Edson da Silva, Ismael Nogueira Rabelo de Melo, Ivete Peixoto Pinheiro, Leonardo Roberto da Silva   +3 more
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Niobium’s Effect on the Properties of a Quasi-High-Entropy Alloy of the CoCrFeMnNi System

Metals
This paper deals with the possibility of smelting quasi-high-entropy alloys (QHEAs) with the partial use of ferroalloys in the charge instead of pure metals.
Svetlana Kvon, Aristotel Issagulov, Vitaliy Kulikov, Saniya Arinova   +3 more
doaj   +1 more source

Influence of Milling and Use of Ni and Al Containing Metal Binder in NbC-Based Cermets

Materials Research, 2023
This study presents the development of niobium carbide cermets bound to nickel and Ni-12Al (wt%). The use of Ni-12Al (wt%) and Ni aims to replace strategic elements such as cobalt (Co) utilized in tungsten carbide-based cermets.
Evandro Dematte, Eliana Franco, Júlio Milan, César Edil da Costa   +3 more
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source