Intensive particle rearrangement in the early stage of spark plasma sintering process

The early-stage sintering behaviours of 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) ceramics during spark plasma sintering (SPS) was investigated using different pressure and heating regimes.It was found that dependent neither on pressure value (20~100 MPa) nor heating rates higher than 50 °C/min, the maximum densification rate had always been observed at rather similar ~78% of theoretical density (TD), where the grain growth was rather moderate. A novel intensive-particle-rearrangement mechanism was proposed to dominate the rapid densification of early-stage SPS process, by which yielded the considerable faster densification rate than those achievable by diffusion-related processes.Present findings showed the possibility of particle rearrangement in high density compacts and the effects of classic particle rearrangement should be re-evaluated in nanoceramic sintering.

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Fabrication and Mechanical Properties of ultra fine WC-6wt.%Co by Spark Plasma Sintering Process

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2011.49.1.040 ◽

2011 ◽

Vol 49 (01) ◽

pp. 40-45 ◽

Cited By ~ 4

Author(s):

Hyun-Kuk Park ◽

Seung-Min Lee ◽

Hee-Jun Youn ◽

Ki-Sang Bang ◽

Ik-Hyun Oh

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Sintering Process ◽

Plasma Sintering ◽

Spark Plasma

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Processing of MMC through conventional sintering and spark plasma sintering process: A review

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/988/1/012092 ◽

2020 ◽

Vol 988 ◽

pp. 012092

Author(s):

B Stalin ◽

M Ravichandran ◽

M Balasubramanian ◽

C Anand Chairman ◽

D Pritima ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Sintering Process ◽

Plasma Sintering ◽

Conventional Sintering ◽

Spark Plasma

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Microstructure and thermoelectric performance evaluation of p-type (Bi, Sb)2Te3 materials synthesized using mechanical alloying and spark plasma sintering process

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-05645-8 ◽

2021 ◽

Author(s):

Hamta Mansouri ◽

Seyed Abdolkarim Sajjadi ◽

Abolfazl Babakhani ◽

Yasaman Saberi

Keyword(s):

Performance Evaluation ◽

Mechanical Alloying ◽

Spark Plasma Sintering ◽

Thermoelectric Performance ◽

Sintering Process ◽

Plasma Sintering ◽

Spark Plasma ◽

P Type

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Shape Memory NiTi and NiTiCu Alloys Obtained by Spark Plasma Sintering Process

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.13.83 ◽

2015 ◽

Vol 13 ◽

pp. 83-90 ◽

Cited By ~ 3

Author(s):

Cristiana Diana Cristea ◽

Magdalena Lungu ◽

Alexander M. Balagurov ◽

Virgil Marinescu ◽

Otilia Culicov ◽

...

Keyword(s):

Shape Memory ◽

Intermetallic Compounds ◽

Spark Plasma Sintering ◽

Sintering Process ◽

Transformation Behavior ◽

Plasma Sintering ◽

New Process ◽

Shape Memory Properties ◽

Spark Plasma ◽

Niti Shape Memory Alloys

The addition of Cu to near equiatomic NiTi shape memory alloys (SMAs) can provide some modifications of their shape memory properties by affecting their transformation behavior. The same effect was obtained in the case of Ni3Ti2 and Ni4Ti3 precipitates presence in the microstructure of NiTi. Also the substitution of Cu to NiTi alloys increases the hardness of the materials. This paper presents the microstructural and mechanical investigations of NiTi and NiTiCu alloys obtained by spark plasma sintering (SPS) process that represents a great potential for researchers as a new process for the fabrication of intermetallic compounds.

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Effects of Initial Punch-Die Clearance in Spark Plasma Sintering Process

MATERIALS TRANSACTIONS ◽

10.2320/matertrans.mer2008263 ◽

2008 ◽

Vol 49 (12) ◽

pp. 2899-2906 ◽

Cited By ~ 9

Author(s):

Salvatore Grasso ◽

Yoshio Sakka ◽

Giovanni Maizza

Keyword(s):

Spark Plasma Sintering ◽

Sintering Process ◽

Plasma Sintering ◽

Spark Plasma

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Development of WC-Fe3Al Composites by Spark Plasma Sintering Process

Materials Science Forum ◽

10.4028/www.scientific.net/msf.881.307 ◽

2016 ◽

Vol 881 ◽

pp. 307-312

Author(s):

Luis Antonio C. Ybarra ◽

Afonso Chimanski ◽

Sergio Gama ◽

Ricardo A.G. da Silva ◽

Izabel Fernanda Machado ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Zinc Stearate ◽

Sintering Process ◽

X Ray Diffraction ◽

X Ray ◽

Plasma Sintering ◽

Al Composite ◽

Spark Plasma ◽

Short Time ◽

Vibration Mill

Tungsten carbide (WC) based composites are usually produced with cobalt, but this binder has the inconvenience of shortage, unstable price and potential carcinogenicity. The objective of this study was to develop WC composite with intermetallic Fe3Al matrix. Powders of WC, iron and aluminum, with composition WC-10 wt% Fe3Al, and 0.5 wt% zinc stearate were milled in a vibration mill for 6 h and sintered in a SPS (spark plasma sintering) furnace at 1150 °C for 8 min under pressure of 30 MPa. Measured density and microstructure analysis showed that the composite had significant densification during the (low-temperature, short time) sintering, and X-ray diffraction analysis showed the formation of intermetallic Fe3Al. Analysis by Vickers indentation resulted in hardness of 11.2 GPa and fracture toughness of 24.6 MPa.m1/2, showing the feasibility of producing dense WC-Fe3Al composite with high mechanical properties using the SPS technique.

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