Results 11 to 20 of about 245,180 (301)

Precipitation kinetics of niobium carbide (NbC) during homogenization heat treatment of additively manufactured inconel 718 superalloy

open access: yesJournal of Materials Research and Technology, 2023
High cooling rate of the laser powder bed fusion (L-PBF) additive manufacturing can suppress the formation of niobium carbide (NbC) phase in the fabricated Inconel 718 nickel-based superalloy parts.
Sajad Ghaemifar, Hamed Mirzadeh
doaj   +2 more sources

Synthesis and material properties of polymer-derived niobium carbide and niobium nitride nanocrystalline ceramics

open access: yesCeramics International, 2021
Nanocrystalline niobium carbide (NbC) ceramics and niobium carbide-niobium nitride (NbC/NbN) composites were synthesized at low temperatures without high-pressure sintering using a single-step polymer-derived approach from a meltable pre-ceramic blend ...
M. Laskoski   +10 more
semanticscholar   +3 more sources

Characterisation of CVD Niobium Carbide Coatings on Hard Carbide Substrate

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2012
Hard coatings are often used for mechanical properties such as wear and friction resistance. The corrosion behaviour may also be an important criterion for industrial applications of these coatings.
Stela CONSTANTINESCU   +2 more
doaj   +1 more source

Improving the efficiency of the cutting tool based on its modification [PDF]

open access: yesE3S Web of Conferences, 2023
Currently, carbide cutting tools are mainly used for processing blanks of machine parts. Increasing the working life of carbide plates is one of the urgent tasks in mechanical engineering.
Romanov P.
doaj   +1 more source

Microstructure and bond strength of niobium carbide coating on GCr15 prepared by in-situ hot press sintering

open access: yesJournal of Materials Research and Technology, 2023
The hardness and adhesion of protective hard coatings to the substrate are the most important parameters that influence the performance of the tool. Herein, we propose an effective strategy, by in-situ hot press sintering, to fabricate a novel niobium ...
Jilin Li   +6 more
doaj   +1 more source

Fabrication and Characterization of Polymer Blend Doped With Metal Carbide Nanoparticles for Humidity Sensors [PDF]

open access: yesJournal of Nanostructures, 2019
Nanocomposites films of (polymer blend-ceramics) were prepared from (PVA-PAA) blend and (PVA-PAA) blend doped with niobium carbide nanoparticles for humidity sensors have low cost, easy fabrication, high sensitivity, lightweight and high corrosion ...
Ahmed Mohaisen, Zinah Hamad
doaj   +1 more source

Structural and Magnetic Properties of Duplex Stainless steel (UNS S31803) Powders Obtained by high Energy Milling of Chips with Additions of NbC [PDF]

open access: yesMaterials Research, 2017
In this study, the high energy mechanical milling was utilized to the production of duplex stainless steel powders from the recycling chips with and without the addition niobium carbide.
Claudiney de Sales Pereira Mendonça   +5 more
doaj   +2 more sources

Decrease in the Starting Temperature of the Reaction for Fabricating Carbides of Refractory Metals When Using Carbon Nanoparticles as Precursors

open access: yesInventions, 2022
Metal matrix composites with a matrix of refractory metals (niobium, tungsten) and reinforcing nanodiamond particles were prepared for studying the possibility of decreasing the starting temperature of carbide synthesis.
Vladimir Popov   +8 more
doaj   +1 more source

Influence of Vanadium and Niobium Carbide Particles on the Mechanical, Microstructural, and Physical Properties of AA6061 Aluminum-Based Mono- and Hybrid Composite Using FSP

open access: yesCoatings, 2023
The ceramic particle reinforcement process is one of the most utilized techniques to enhance the metal surface. The current investigation uses vanadium and niobium carbides to reinforce the AA6061 alloy using the friction stir process (FSP).
W. S. Abushanab   +5 more
semanticscholar   +1 more source

Characterization of Nanosized Carbide Precipitates in Multiple Microalloyed Press Hardening Steels

open access: yesMetals, 2023
Press hardening steel standardly relies on titanium microalloying for protecting boron from being tied up by residual nitrogen. This practice safeguards the hardenability effect of boron during die quenching.
Hardy Mohrbacher   +6 more
doaj   +1 more source

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