Structure and properties of advanced materials obtained by Spark Plasma Sintering

Structure and properties of advanced materials obtained by Spark Plasma Sintering

This paper provides an overview of Spark Plasma Sintering (SPS), which is an advanced technology for high-speed sintering of powder materials by applying mechanical pressure to the powder compact and heating it using a pulsed direct current. Some examples of the successful application of the SPS tec...

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Bibliographic Details
Published in:Acta astronautica Vol. 109; pp. 172 - 176
Main Authors: Chuvildeev, V.N., Panov, D.V., Boldin, M.S., Nokhrin, A.V., Blagoveshchensky, Yu.V., Sakharov, N.V., Shotin, S.V., Kotkov, D.N.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-04-2015
Subjects:
Al2O3
Aluminum oxide
Carbides
Ceramics
Hardness
Heating
High speed
Mechanical properties
Optimization
Powder compacts
Spark Plasma Sintering
Structure
W–Ni–Fe
Mechanical properties
W–Ni–Fe
Ceramics
Spark Plasma Sintering
Structure
Al2O3
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Summary:This paper provides an overview of Spark Plasma Sintering (SPS), which is an advanced technology for high-speed sintering of powder materials by applying mechanical pressure to the powder compact and heating it using a pulsed direct current. Some examples of the successful application of the SPS technology in producing materials with high strength characteristics are shown. By optimizing the SPS regimes, the hardness of pure WC ceramics Hv=30÷31GPa (20% higher than that of conventional materials), hardness of pure Al2O3 ceramics Hv=23.5GPa (50% higher than that of conventional materials) and limit strength of the heavy alloy W–Ni–Fe σT=2500MPa (2 times higher than that of conventional materials) are achievable. •Spark Plasma Sintering (SPS) is an advanced technology for high-speed sintering of powder.•By optimizing the SPS regimes, the hardness of pure WC ceramics increases by 20%•Hardness of pure Al2O3 ceramics turns 50% higher than that of usual material.•Limit strength of the heavy alloy W–Ni–Fe achieved in SPS is 2 times higher than for regular material.
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content type line 23
ISSN:0094-5765
1879-2030
DOI:10.1016/j.actaastro.2014.11.008