MECHANICAL CHARACTERISTICS OF NANOSIZED COBALT INTERLAYERS IN SOLID WC/Co ALLOYS

V. G. Zavodinsky

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MECHANICAL CHARACTERISTICS OF NANOSIZED COBALT INTERLAYERS IN SOLID WC/Co ALLOYS

机译：固态WC / Co合金中纳米钴中间层的力学特性。

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With the aid of the quantum-mechanical computer simulation (the theory of the electron density functional and the method of pseudo-potential) the mechanical characteristics of nanosized cobalt interlayers between tungsten carbide crystallites were investigated. It is shown that with a decrease in the cobalt interlayer thickness to nanoscale dimensions its transverse rupture strength doubles, but, on the other hand, the shear modulus undergoes a sixfold decrease. The strength of the interlayers in this case can be 3-4 times higher than the strength of solid cobalt.

机译：借助量子力学计算机模拟（电子密度泛函理论和伪电势方法），研究了碳化钨微晶之间纳米级钴中间层的机械特性。结果表明，随着钴中间层厚度减小至纳米级，其横向断裂强度增加了一倍，但另一方面，剪切模量却降低了六倍。在这种情况下，中间层的强度可以比固态钴的强度高3-4倍。

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来源
《International journal of nanomechanics science and technology》 |2011年第1期|p.1-8|共8页
作者
V. G. Zavodinsky;
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作者单位

Institute of the Study of Materials, Khabarovsk Scientific Center,Far-East Department of the Russian Academy of Sciences,Khabarovsk, Russia;

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正文语种 eng
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关键词
simulation by first principles; cobalt; tungsten carbide; nanosized in-terlayers; strength; shear modulus;

机译：通过第一原理模拟;钴;碳化钨纳米级夹层;强度;剪切模量;

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2. Relationship between Erosion and Mechanical Characteristics of Fine-Grained Hard Alloy WC - 16 percent Co Obtained by Solid-Phase and Liquid-Phase Consolidation. I. Erosion Resistance [J] . G. A. Bovkun, A. V. Laptev Powder Metallurgy and Metal Ceramics . 2004,第5a6期

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3. Ab Initio Calculation of Cobalt Interlayer Size Influence on Tensile Strength in WC-Co Hard Alloy [J] . GNIDENKO Anton Diffusion and Defect Data. Solid State Data, Part B. Solid State Phenomena . 2014,第Null期

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4. Ab Initio Calculation of Cobalt Interlayer Size Influence on Tensile Strength in WC-Co Hard Alloy [C] . GNIDENKO Anton Physics and technology of nanostructured materials II . 2013

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5. The mechanical, electrochemical, and morphological characteristics of passivating oxide films covering cobalt-chromium-molybdenum alloys: A study of five microstructures. [D] . Megremis, Spiro John. 2001

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6. Enthalpy Effect of Adding Cobalt to Liquid Sn-3.8Ag-0.7CuLead-Free Solder Alloy: Difference between Bulk and Nanosized Cobalt [O] . Andriy Yakymovych, *, George Kaptay, -1

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7. Ab Initio Calculation of Cobalt Interlayer Size Influence on Tensile Strength in WC-Co Hard Alloy [O] . Gnidenko Anton 2015

机译：钴中间层尺寸的ab从头计算对WC-Co硬质合金抗拉强度的影响
8. Developing Substitute Binders for Cobalt in WC-Co Alloys and Studying the Effect of Grain Size of WC on the Strength of WC-Co Alloys [R] . Harry Udin 1958

机译：开发WC-Co合金中钴的替代粘结剂及研究WC粒度对WC-Co合金强度的影响

MECHANICAL CHARACTERISTICS OF NANOSIZED COBALT INTERLAYERS IN SOLID WC/Co ALLOYS

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