Results 11 to 20 of about 137,790 (334)

Investigating the Mars-van Krevelen Mechanism for CO Capture on the Surface of Carbides. [PDF]

open access: yesMolecules
Electrochemical reduction processes enable the CO to be converted into a useful chemical fuel. Our study employs density functional theory calculations to analyze the (110) facets of the transition metal carbide surfaces for CO capture, incorporating the
Ashraf N, Abghoui Y.
europepmc   +2 more sources

Effect of bimodal WC particle size and binder composition on the morphology of WC grains in WC–Co–Ni3Al cemented carbides

open access: yesJournal of Materials Research and Technology, 2021
In addition to dispersed nanoparticles in the binder phase, the effect of Ni3Al on the growth mechanism of tungsten carbide (WC) grains is also essential for the fabrication of high-quality of cemented carbides.
Yingbiao Peng   +6 more
doaj   +1 more source

Effects of solution annealing on the precipitation of dendrite-like carbides during continuous cooling in Alloy 690

open access: yesJournal of Materials Research and Technology, 2021
The precipitation characteristics of intergranular carbides generally have a significant impact on the microstructural homogeneity and properties of Alloy 690.
Xia Zhao   +7 more
doaj   +1 more source

Structural stability, electronic structure, mechanical and optical properties of MAX phase ternary Mo2Ga2C, Mo2GaC and Mo3GaC2 carbides

open access: yesJournal of Materials Research and Technology, 2021
In this article, structural, mechanical, optical and electronic properties of MAX phase ternary Mo2Ga2C, Mo2GaC and Mo3GaC2 carbides are reported. Theoretical calculations are performed by applying OLCAO method within the density functional theory.
Muhammad Nadeem   +7 more
doaj   +1 more source

Prediction the Initiation of Pitting Corrosion Depending on Carbides in the Microstructure of 304 Stainless Steel [PDF]

open access: yesEngineering and Technology Journal, 2017
Stainless steel has excellent corrosion resistance due to formation oxides protective films in many environments. When steel exposed to temperature in the range of (500-900) ºC, the carbon in the structure will be effective to react with chromium in the ...
S. I.Alrubaiey, Sh. F.Hasan
doaj   +1 more source

Modification of cast alloys nanostructured material

open access: yesЛитьë и металлургия, 2021
The third article of the series devoted to the application of nanomaterials and nanotechnologies in industry in general and, first of all, in metallurgy, materials science and foundry is presented. This article deals with the use of nanomaterials for the
P. A. Vitiaz   +4 more
doaj   +1 more source

WEAR RESISTANCE OF MULTI-COMPONENT COMPOSITE COATINGS APPLIED BY CONCENTRATING ENERGY FLOWS [PDF]

open access: yesProceedings on Engineering Sciences, 2019
In this work are presented the results of comparative tests of the abrasion wear characteristics and the wear resistance of new coatings from multi-component composite materials.
M. KANDEVA   +4 more
doaj   +1 more source

The effect of boron on the amount and type of carbides in chromium white irons [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The effect of boron, in the amounts of 0.26, 0.39, and 0.59 wt.%, on the volume fraction and structure of carbides in Cr white irons was examined. It was demonstrated that the addition of boron can change the microstructural characteristics of white iron
Tomović-Petrović Stanka M.   +2 more
doaj   +1 more source

Recent progress on primary carbides in AISI H13 hot work mold steel

open access: yes工程科学学报, 2018
This paper reviewed the recent development of primary carbides in H13 steel from the aspects of solidification segregation theory, solidification method, production process, and alloy design.
MAO Ming-tao   +3 more
doaj   +1 more source

Secondary Hardness and Heat Resistance of High-Speed Steels

open access: yesУспехи физики металлов, 2020
This paper presents the research results concerning factors affecting the secondary hardness and heat resistance of high-speed steels. Processing parameters making possible to achieve the necessary levels of heat resistance and hardness are considered ...
O. V. Movchan, K. O. Chornoivanenko
doaj   +1 more source

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