Preparation and electrical erosion resistance of TiB2/Cu nanocomposites

Ломовский, О. И.; Maly, V.I.; Dudina, Dina V.; Корчагин, М. А.; Анисимов, А. Н.; Shvetsov, G. A.; Болдырев, В. В.; Kim, J. S.; Kwon, Young Soon

doi:10.1134/s0020168506070090

Cited by 2 publications

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“…Compact articles are produced from these powders by pulse nonequilibrium methods, which allow retaining both the metastable structural phase states of the synthesized powders and the nanostructure of the initial powders. Methods of spark plasma sintering (SPS) [3], explosive compaction [4][5][6], and application of thin coatings by means of detonation deposition [6] and cold gas-dynamic spraying [7] have been successfully used for this purpose. 1 Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090; anis@hydro.nsc.ru.…”

Section: Introductionmentioning

confidence: 99%

Possibility of electric-pulse sintering of powder nanostructural composites

Анисимов

Mali

2010

Combust Explos Shock Waves

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The activities described in the paper are aimed at solving the problem of forming various articles from homogeneous metallic powders of copper and molybdenum, from a mixture of copper, titanium, and boron powders, and from a mixture of the copper powder with uniformly distributed particles of titanium diboride (up to 40 vol.%). The idea is to obtain compacts with the minimum changes in the initial structure of the material and with high resistance to electric erosion under conditions of high currents. A method of electric-pulse sintering is used, where the compacting process is ensured with one capacitor discharge with a current density of 10 3 A/mm 2 and sintering time of 10 −4 sec. Conditions of sintering of powders pre-compressed by a pressure of several kilobars are studied. The density, microstructure, and phase composition of the sintered samples are examined. The erosion resistance of a Cu/TiB 2 porous nanostructural composite is tested on a model erosive plasma accelerator.

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Section: Introductionmentioning

confidence: 99%

Possibility of electric-pulse sintering of powder nanostructural composites

Анисимов

Mali

2010

Combust Explos Shock Waves

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“…Dispersion reinforced Cu-based composites have been developed rapidly as a sort of novel functional and structural materials in recent years [1]. Due to possessing high strength, high conductivity and high temperature performance, this kind of composite exhibits a broad application prospect [2,3,4], and has been widely utilized in a lot of areas, such as the electrode materials, electric locomotive lead frame and electromagnetic railgun materials. During the serving period of high electric load industrial environments, materials are apt to be caused the voltage breakdown and plasma discharge, thereby lead to arc ablation failure.…”

Section: Introductionmentioning

confidence: 99%

Study on the Electrical Arc Ablation Performance of Al<sub>2</sub>O<sub>3</sub> Reinforced Cu-Matrix Composites

Liu

et al. 2012

AMR

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The Al2O3 particle reinforced Cu-based composites (Al2O3/Cu) were prepared by internal oxidation technology. The electrical arc ablation performance of Al2O3/Cu composite was compared with copper H62 through a series of ablation experiments. The results indicate that both the quality lost and ablation diameter of copper H62 samples are larger than those of Al2O3/Cu composites in condition of the same ablating current. The large ablation pits observed by scanning electron microscopy (SEM) indicated that the arc ablation of copper H62 is concentrate and serious. The result of energy dispersive spectrometer (EDS) shows that the molten copper alloy of H62 has been transferred and sprayed. However, the arc ablation pits of Al2O3/Cu composites are dispersing and slight. The transferring and spaying material of Al2O3/Cu composite is mainly from Cu-matrix. The anchoring effect and protection function of the uniformly dispersing Al2O3 grains, which are executed onto the Cu-matrix, has been considered to contribute to the excellent arc ablation performance of composite Al2O3/Cu.

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Preparation and electrical erosion resistance of TiB2/Cu nanocomposites

Cited by 2 publications

References 4 publications

Possibility of electric-pulse sintering of powder nanostructural composites

Possibility of electric-pulse sintering of powder nanostructural composites

Study on the Electrical Arc Ablation Performance of Al<sub>2</sub>O<sub>3</sub> Reinforced Cu-Matrix Composites

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