Results 21 to 30 of about 128,309 (243)

Influence of Niobium Adding on the Microstructure and Abrasive Wear Resistance of a Heat-Treated High-Chromium Near-Eutectic Cast Iron Alloy

Materials Research, 2022
High chromium cast iron (HCCI) with levels around 26% Cr - 2.9% C according to ASTM A 532 IIIA is widely used in systems where high abrasive wear resistance is required. To evaluate the niobium influence, HCCI with 0.5% Nb and 1% Nb additions were melted,
Ismael Nogueira Rabelo de Melo, Anderson Edson da Silva, Fabrício Gonçalves de Faria, Ivete Peixoto Pinheiro, Leonardo Roberto da Silva, Roberto Magalhães Paniago   +5 more
doaj   +1 more source

OXYGEN DETERMINATION IN NANOCRYSTALLINE NIOBIUM CARBIDE [PDF]

, 2023
Carrier gas hot extraction method was applied for the determination of oxygen in nanocrystalline niobium carbide. Measurement parameters ensuring correct and reproducible results were determined and experiments using linear heating were ...
Danilov, D. A., Калинина, А. Е., Данилов, Д. А., Курлов, А. С., Kurlov, A. S., Kalinina, A. E.   +5 more
core  

Microstructure and Continuous Cooling Transformation of an Fe-7.1Al-0.7Mn-0.4C-0.3Nb Alloy

Metals, 2022
Reducing pollutant emissions and improving safety standards are primary targets for modern mobility improvement. To meet these needs, the development of low-density steels containing aluminum is a new frontier of research for automotive applications. Low-
Mônica Aline Magalhães Gurgel, Eustáquio de Souza Baêta Júnior, Rodolfo da Silva Teixeira, Gabriel Onofre do Nascimento, Suzane Sant’Ana Oliveira, Duílio Norberto Ferronatto Leite, Luciano Pessanha Moreira, Luiz Paulo Brandao, Andersan dos Santos Paula   +8 more
doaj   +1 more source

NIOBIUM EFFECT ON BASE METAL AND HEAT AFFECTED ZONE MICROSTRUCTURE OF GIRTH WELDED JOINTS

Acta Metallurgica Slovaca, 2017
The development of steels for line pipes during the last decades has been driven by the need to obtain improved combinations of high strength, toughness, weldability on industrial scale at affordable prices.
Andrea Di Schino, Paolo Emilio Di Nunzio   +1 more
doaj   +1 more source

The inventions in nanotechnological area increase the efficiency of construction, housing and communal services and adjacent economic fields [PDF]

Нанотехнологии в строительстве, 2014
The review gives brief description of inventions in nanotechnological area: the production method for silver nanoparticles with modified ligand shell in highviscosity matrix (RU 2526967); structures containing molecular structures with high aspect ratio
VLASOV Vladimir Alexeevich
doaj   +1 more source

The effect of niobium addition on the microstructure and properties of cast iron used in cylinder head

Journal of Materials Research and Technology, 2020
Cylinder head is one of the most important parts of heated components in the engine, while cracking due to low strength and large residual stress at high temperature is the main failure mode of cylinder head.
Sining Pan, Fanzheng Zeng, Nanguang Su, Zhaokun Xian   +3 more
doaj   +1 more source

Ultrathin niobium carbide alleviates colitis through absorbing ROS

Materials & Design, 2022
Inflammatory bowel disease (IBD) is a chronic disease and has become a global concern, which greatly reduces the quality of patients’ life. It is generally believed that enhanced production of reactive oxygen species (ROS) contributes to the progression ...
Wenfang Xiong, Yizhang Wu, Kuo-Yang Sun, X.S. Wu, Yi-Hua Zhou, Hong-Ling Cai, Xiaoping Zou   +6 more
doaj   +1 more source

Microstructure and wear resistance of high chromium cast iron containing niobium [PDF]

China Foundry, 2014
In the paper, the effect of niobium addition on the microstructure, mechanical properties and wear resistance of high chromium cast iron has been studied.
Zhang Zhiguo, Yang Chengkai, Zhang Peng
doaj  

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

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