Results 21 to 30 of about 2,345 (276)

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

open access: yesMaterials 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   +5 more
doaj   +1 more source

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

open access: yesMetals, 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   +8 more
doaj   +1 more source

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

open access: yesНанотехнологии 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

OXYGEN DETERMINATION IN NANOCRYSTALLINE NIOBIUM CARBIDE [PDF]

open access: yes, 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.   +5 more
core  

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

open access: yesActa 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   +1 more
doaj   +1 more source

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

open access: yesJournal 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   +3 more
doaj   +1 more source

NIOBIUM CARBIDE COATING OF GRAPHITE TUBES [PDF]

open access: yes, 1958
Graphite tubes having a length-to-bore-diameter ratio of 430 were coated on the inside with uniform adherent layers of niobium carbide in thicknesses of 0.002 and 0.004 in. Intimate conformity to the graphite surface and improved uniformity were obtained
Browning, M.F.   +3 more
core   +1 more source

Ultrathin niobium carbide alleviates colitis through absorbing ROS

open access: yesMaterials & 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   +6 more
doaj   +1 more source

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

open access: yesChina 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  

Influence of Ausforming Treatment of 0.4wt%C Steel Modified With Nb on the Microstructure and Hardness Properties

open access: yesTikrit Journal of Engineering Sciences, 2012
In the present work the relationship between the microstructure and the hardness of the Steel both with and without an addition of niobium was studied. Investigation by direct observation using optical microscopy was carried out. The purpose of this work
Hiam Razzak Kadhum
doaj   +1 more source

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