Powder sintering with application of an electric current and periodic mechanical pulses

Raichenko, A. I.; Istomina, T. I.; Troyan, I. A.

doi:10.1007/bf02678644

Cited by 3 publications

(5 citation statements)

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“…Raichenko et al [ 90 , 91 , 92 ], Svechkov et al [ 93 ], Baidenko et al [ 94 , 95 , 96 ] and Ryabinina et al [ 97 , 98 ] conducted a large number of experiments using this set-up.…”

Section: Methods Of Electric Current-assisted Consolidation Of Powmentioning

confidence: 99%

“…However, other research Institutes have also contributed to the development of this field. Materials studied in this regard can be divided into several groups: Al-graphite and Al-carbon fiber composites [ 79 ], B 4 C-TiB 2 and TiN-AlN composites [ 87 ], TiN-TiB 2 composites [ 91 ], Cu-TiB 2 composites [ 117 ], Cu-based and Cu-Ni-based composites [ 116 ], Cu-Sn alloys [ 50 , 62 ] and diamond-containing materials [ 62 , 120 ] for applications in stone dressing ( Figure 54 ). The composites were consolidated by high-voltage as well as low-voltage sintering.…”

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

“…Composites based on titanium carbides and borides can be used as abrasive materials and materials for cutting tools thanks to their mechanical properties. These powders are sintered by electric discharge sintering at a high temperature and a high pressure [ 87 ] and self-propagating high-temperature synthesis (SHS) [ 91 ]. Electric discharge sintering offers an easier consolidation procedure; the densities ranging from 64% to 99% can be obtained without the introduction of any additives [ 91 ].…”

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

“…These powders are sintered by electric discharge sintering at a high temperature and a high pressure [ 87 ] and self-propagating high-temperature synthesis (SHS) [ 91 ]. Electric discharge sintering offers an easier consolidation procedure; the densities ranging from 64% to 99% can be obtained without the introduction of any additives [ 91 ]. The Institute of Solid State Chemistry ad Mechanochemistry, Siberian Branch of the Russian Academy of Science (Novosibirsk) in collaboration with the Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Science (Tomsk) developed a synthesis route for composite materials “copper–nanosized TiB 2 particles” [ 117 ].…”

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

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Outside Mainstream Electronic Databases: Review of Studies Conducted in the USSR and Post-Soviet Countries on Electric Current-Assisted Consolidation of Powder Materials

et al. 2013

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This paper reviews research articles published in the former USSR and post-soviet countries on the consolidation of powder materials using electric current that passes through the powder sample and/or a conductive die-punch set-up. Having been published in Russian, many of the reviewed papers are not included in the mainstream electronic databases of the scientific articles and thus are not known to the scientific community. The present review is aimed at filling this information gap. In the paper, the electric current-assisted sintering techniques based on high- and low-voltage approaches are presented. The main results of the theoretical modeling of the processes of electromagnetic field-assisted consolidation of powder materials are discussed. Sintering experiments and related equipment are described and the major experimental results are analyzed. Sintering conditions required to achieve the desired properties of the sintered materials are provided for selected material systems. Tooling materials used in the electric current-assisted consolidation set-ups are also described.

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“…Raichenko et al [ 90 , 91 , 92 ], Svechkov et al [ 93 ], Baidenko et al [ 94 , 95 , 96 ] and Ryabinina et al [ 97 , 98 ] conducted a large number of experiments using this set-up.…”

Section: Methods Of Electric Current-assisted Consolidation Of Powmentioning

confidence: 99%

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

Section: Materials Processed By Electric Current-assisted Consolidmentioning

confidence: 99%

See 2 more Smart Citations

Outside Mainstream Electronic Databases: Review of Studies Conducted in the USSR and Post-Soviet Countries on Electric Current-Assisted Consolidation of Powder Materials

et al. 2013

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“…It offers a high consolidation rate and use of a protective environment and pressure to enable rapid and complete compaction and minimize the grain growth [2-6]. EDS permits wide variation in the strength (from 0.1 to 1000 A) and type (direct, alternating, or both) of the current flowing through the material, i.e., current-induced treatment conditions can be widely changed [5][6][7][8][9]. However, experimental data are still needed to find out how to activate microdischarge-induced sintering of powder materials, which remains a hypothetical problem.…”

mentioning

confidence: 99%

Electric-discharge sintering of TiN-AlN nanocomposites

Zamula

Derevyanko

Kolesnichenko

et al. 2007

Powder Metall Met Ceram

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The structurization and properties of O 3 nanocomposites consolidated by electric-discharge sintering are examined. TiN-AlN composites with a relative density of about 98 to 99% are produced. Their structure is not homogenous and consists of TiN and AlN grains of about 200 nm in size. There are also large spherical grains of titanium nitride of 2 to 10 μm. This effect is probably caused by microdischarges between particles of the conducting phase and subsequent meltback of the interacting surfaces. The effect of yttrium oxide additives on the material structure and properties is investigated. It is shown that TiN-AlN composites consolidated by electric-discharge sintering have high hardness (HV ~ 25 GPa) and fracture toughness (K 1c ~ 6 MPa · m 1/2 ).Ceramics based on refractory compounds show excellent operating properties (high melting temperature, hardness, wear resistance, and stability). This is why they are widely applied in engineering, transportation, aerospace, and power industries.The research efforts made in the last decades show that nanostructuring a consolidated material based on refractory compounds can improve its mechanical characteristics by 20 to 40%. The paper [1] demonstrates that ceramics based on titanium nitride become harder by 18-20 to 30 GPa if grain sizes are reduced from several microns to 30 nm.Unconventional approaches are needed to develop nanostructured materials since it is quite a contradictory task to produce a dense material with grain growth being inhibited. Electric-discharge sintering (EDS) is a promising technique to consolidate nanopowders. It offers a high consolidation rate and use of a protective environment and pressure to enable rapid and complete compaction and minimize the grain growth [2-6]. EDS permits wide variation in the strength (from 0.1 to 1000 A) and type (direct, alternating, or both) of the current flowing through the material, i.e., current-induced treatment conditions can be widely changed [5][6][7][8][9]. However, experimental data are still needed to find out how to activate microdischarge-induced sintering of powder materials, which remains a hypothetical problem.The technique is known to be used to consolidate nanopowders of metals, refractory nitrides, and carbonitrides [3, 4, 10]. EDS of the titanium nitride powder in [3] has resulted in a 98%-dense material, with sintering lasting for more than 5 min and temperature being higher than 1600°C.The paper [3] examines EDS and hot pressing of nanostructured powders of titanium carbonitride with grains of 100 to 200 nm in size. A material with a density of 95% of the theoretical value was produced at 1600 to 1800°C and holding time of 1 min. The material sintered had grains of 500 nm (EDS) and 3 μm (hot pressing) in size. Therefore, electric-discharge sintering is a promising consolidation technique that retains the grain nanostructure.In terms of electric-discharge sintering, a heterophase TiN-AlN system is of interest since titanium nitride is a conductor and aluminum nitride is a dielectric. EDS-in...

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Sintering by Low-Voltage Electric Pulses (Including Spark Plasma Sintering (SPS))

Olevsky

Dudina

2018

Field-Assisted Sintering

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Powder sintering with application of an electric current and periodic mechanical pulses

Cited by 3 publications

References 2 publications

Outside Mainstream Electronic Databases: Review of Studies Conducted in the USSR and Post-Soviet Countries on Electric Current-Assisted Consolidation of Powder Materials

Outside Mainstream Electronic Databases: Review of Studies Conducted in the USSR and Post-Soviet Countries on Electric Current-Assisted Consolidation of Powder Materials

Electric-discharge sintering of TiN-AlN nanocomposites

Sintering by Low-Voltage Electric Pulses (Including Spark Plasma Sintering (SPS))

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