نتایج جستجو برای: پودر wc co

تعداد نتایج: 343879  

Journal: :JOM 2021

Abstract The grain boundary network of WC in WC-Co is important, as cracks often travel intergranularly. This motivates the present work, where we experimentally measure fracture energy Σ2 twist boundaries between crystals using a double cantilever beam opened with wedge under displacement control WC-10wt%Co sample. this type was compared cleaving { $$10\overline{1}0$$ <mml:math xmlns:mml="http...

Journal: :Physical Review Materials 2021

WC-Co cemented carbides have a unique combination of high hardness and good toughness, making them ideal as tool materials in applications such metal machining or rock drilling. Dopants are commonly added to retard grain growth thereby creating harder material. Thin films with cubic structure been observed experimentally at phase boundaries between hexagonal WC fcc Co-rich binder when doping wi...

Journal: :ACS applied materials & interfaces 2013
Jun Yang Ying Xie Ruihong Wang Baojiang Jiang Chungui Tian Guang Mu Jie Yin Bo Wang Honggang Fu

The synergistic effect of WC and Pd has large benefit for ethanol electrooxidation. The small-sized Pd nanoparticles (NPs) decorated tungsten carbide on graphene (Pd-WC/GN) will be a promising anode catalyst for the direct ethanol fuel cells. The density functional theory (DFT) calculations reveal that the strong interaction exists at the interface between Pd and WC, which induces the electron ...

2004
Chang-Soo Kim David M. Saylor

While empirical relationships between the mechanical properties of WC-Cocomposites and the carbide grain size and carbide volume fraction are qualitatively well-known, the influence of other microstructural features on the macroscopic properties hasbeen less clear. In this thesis, a comprehensive study of the effect of the interfacecharacter distribution (grain shape and misorie...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1992

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1990

Journal: :Journal of the Japan Institute of Metals and Materials 1968

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