Results 11 to 20 of about 36,648 (255)

Research status and development trend of new nanocrystalline cemented carbides [PDF]

open access: yesFenmo yejin jishu, 2022
Nanocrystalline cemented carbides have been widely used in the electronics information, automobile manufacturing, aerospace, national defense, and military industry due to the excellent performance. The development of nanocrystalline cemented carbides in
WANG Qian-yu   +4 more
doaj   +2 more sources

Role and Dynamics of Transition Metal Carbides in Methane Coupling [PDF]

open access: yes, 2022
Transition metal carbides have numerous applications and are known to excel in terms of hardness, thermal stability and conductivity. In particular, the Pt-like behavior of Mo and W carbides has led to a popularization of metal carbides in catalysis ...
Christophe , Copéret   +8 more
core   +2 more sources

Modelling Precipitation of Carbides in Martensitic Steels [PDF]

open access: yes, 2004
The purpose of this work was to model carbide precipitation in steels of a quaternary system which includes two substitutional elements. The work focuses on secondary hardening steels which are used for high-strength components, where hydrogen ...
Yamasaki, Shingo
core   +2 more sources

The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming [PDF]

open access: yes, 2014
The effect of lanthanum addition to γ-alumina supported bimetallic carbides has been studied for the reaction of dry methane reforming using four different lanthanum loading levels of 1, 5, 10 and 15 wt% of lanthanum.
Liam J. France   +19 more
core   +2 more sources

Synthesis of binary transition metal nitrides, carbides and borides from the elements in the laser-heated diamond anvil cell and their structure-property relations [PDF]

open access: yes, 2011
Transition metal nitrides, carbides and borides have a high potential for industrial applications as they not only have a high melting point but are generally harder and less compressible than the pure metals.
Lkhamsuren Bayarjargal   +7 more
core   +1 more source

Effect of Heat Treatment Schedules on Creep Performance of Ni-Based Superalloy Mar-M247 at 871 °C and 250 Mpa

open access: yesMetals, 2023
The effects of heat treatment (H1 and H2) on the creep behavior and microstructures of Mar-M247 at 871 °C/250 MPa are studied. The results show that the as-cast microstructure is composed of eutectics, γ phase, γ’ phase, MC and M23C6 carbides, while new ...
Qinghai Pan   +7 more
doaj   +1 more source

Epitaxial growth of tantalum carbides by low carbon flow carburizing [PDF]

open access: yes, 2017
The carburizing of tantalum samples under different carbon flow rates has highlighted the influence of the carbon flow rate on the structure of tantalum carbides. XRD analyses enabled the identification of surface structures that were revealed by optical
FAURE, Sébastien   +3 more
core   +1 more source

Effect of Microstructure on Hydrogen Permeation in EA4T and 30CrNiMoV12 Railway Axle Steels

open access: yesMetals, 2019
A comparative study was conducted to reveal the effect of microstructure on hydrogen permeation in the EA4T and 30CrNiMoV12 railway axle steels. Unlike the EA4T with its sorbite structure, 30CrNiMoV12 steel shows a typical tempered martensitic structure,
Tingzhi Si   +4 more
doaj   +1 more source

Ultra-High Temperature Ceramics for solar receivers: spectral and high-temperature emittance characterization [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
We report on the preparation, room temperature spectral reflectance and high-temperature thermal emittance characterization of different boride and carbide Ultra-High Temperature Ceramics (UHTCs).
Sani E.   +4 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

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