Results 11 to 20 of about 28,462 (309)

Spark plasma sintering of alumina: Study of parameters, formal sintering analysis and hypotheses on the mechanism(s) involved in densification and grain growth [PDF]

open access: yesActa Materialia, 2011
The spark plasma sintering (SPS) of an undoped commercial α-Al2O3 powder (0.14 μm) was investigated. The SPS parameters such as the dwell temperature, applied external pressure, temperature of pressure application, dwell time and pulse pattern were ...
Estournès, Claude   +5 more
core   +4 more sources

WC-5Co Cemented Carbides Fabricated by SPS [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
New graphite tools were designed and produced to fabricate a semi-finished product from which nine cutting inserts were obtained in one spark plasma sintering process.
P. Siwak, D. Garbiec
doaj   +1 more source

Study of Coatings Formed on Zirconium Alloy by Plasma Electrolytic Oxidation in Electrolyte with Submicron Yttria Powder Additives

open access: yesMetals, 2021
Coatings with thickness 40 to 150 μm were formed by plasma electrolytic oxidation (PEO) on the zirconium alloy Zr-1Nb (Zr-1% Nb) in the slurry electrolyte containing 9 g/L Na2SiO3 5H2O, 5 g/L Na(PH2O2) and 6 g/L submicron Y2O3 yttria powder during 60 min
Svetlana Savushkina   +3 more
doaj   +1 more source

Biomimetic apatite sintered at very low temperature by spark plasma sintering: Physico-chemistry and microstructure aspects [PDF]

open access: yes, 2010
Nanocrystalline apatites analogous to bone mineral are very promising materials for the preparation of highly bioactive ceramics due to their unique intrinsic physico-chemical characteristics.
Champion, Eric   +8 more
core   +3 more sources

Influence of pulse current during Spark Plasma Sintering evidenced on reactive alumina–hematite powders [PDF]

open access: yes, 2011
Spark Plasma Sintering (SPS) is increasingly used. The temperature and current are not independent parameters, making it difficult to separate the current intrinsic role from Joule heating.
Bley, Vincent   +6 more
core   +3 more sources

Comparative evaluation of spark plasma (SPS), microwave (MWS),two stage sintering (TSS) and conventional sintering (CRH) on the densification and micro structural evolution of fully stabilized zirconia ceramics [PDF]

open access: yesScience of Sintering, 2010
Yttria stabilized zirconia (8YSZ) powders were subjected to densification studies employing various sintering techniques like spark plasma sintering (SPS), microwave sintering (MWS) and two-stage sintering (TSS).
Rajeswari K.   +4 more
doaj   +1 more source

Microstructure of Ba1−xLaxTiO3−δ ceramics sintered by spark plasma sintering [PDF]

open access: yes, 2011
Nano-sized Ba1−xLaxTiO3 (0.00 ≤ x ≤ 0.14) powders were prepared by a coprecipitation method and calcined at 850 °C in air. The corresponding ceramics were obtained by Spark Plasma Sintering (SPS) at 1050 °C.
El Horr, Nahida   +3 more
core   +3 more sources

Spark plasma sintering of hydrothermally synthesized bismuth ferrite [PDF]

open access: yesProcessing and Application of Ceramics, 2016
Bismuth ferrite, BiFeO3 (BFO), powder was synthesized by hydrothermal method from Bi(NO3)3·5 H2O and Fe(NO3)3·9 H2O as precursors. The synthesized powder was further sintered using spark plasma sintering (SPS).
Zorica Branković   +9 more
doaj   +1 more source

Ceramic Cutting Materials and Tools Suitable for Machining High-Temperature Nickel-Based Alloys: A Review

open access: yesMetals, 2021
Nickel-based superalloys are attractive to many industrial sectors (automotive, military, energy, aerospace, etc.). However, their physical properties make them difficult to machining using traditional tools. Therefore, new materials for the machining of
Anton Seleznev   +2 more
doaj   +1 more source

Sintering and densification of nanocrystalline ceramic oxide powders: a review [PDF]

open access: yes, 2008
Observation of the unconventional properties and material behaviour expected in the nanometre grain size range necessitates the fabrication of fully dense bulk nanostructured ceramics.
Chaim, Rachman   +3 more
core   +2 more sources

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