Electrical and Mechanical Properties of Fine-Grained Li/Ta-Modified (Na,K)NbO3-Based Piezoceramics Prepared by Spark Plasma Sintering

Spark plasma sintering (SPS) investigations were carried out on three sets of Co specimens: untreated, high energy mechanically (HEMT) pre-treated, and nanomodified powders. The microstructure, density, and mechanical properties of sintered pellets were investigated as a function of various pre-treatments and sintering temperatures (700–1000 °C). Fine-grained sinters were obtained for pre-treated Co powders; nano-additives tended to inhibit grain growth by reinforcing particles at grain boundaries and limiting grain-boundary movement. High degree of compaction was also achieved with relative densities of sintered Co pellets ranging between 95.2% and 99.6%. A direct co-relation was observed between the mechanical properties and densities of sintered Co pellets. For a comparable sinter quality, sintering temperatures for pre-treated powders were lower by 100 °C as compared to untreated powders. Highest values of bending strength (1997 MPa), microhardness (305 MPa), and relative density (99.6%) were observed for nanomodified HEMT and SPS processed Co pellets, sintered at 700 °C.

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Aging behavior and mechanical properties of ultra-fine grained Al2024-2TiN composite prepared by spark plasma sintering

Materials Characterization ◽

10.1016/j.matchar.2021.111497 ◽

2021 ◽

pp. 111497

Author(s):

Jingfan Cheng ◽

Bing Li ◽

Qizhou Cai ◽

Bingyi Zhao ◽

Can Xu ◽

...

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Aging Behavior ◽

Fine Grained ◽

Plasma Sintering ◽

Spark Plasma

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Effect of Al metal precursor on the phase formation and mechanical properties of fine-grained SiAlON ceramics prepared by spark plasma sintering

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2016.12.025 ◽

2017 ◽

Vol 37 (5) ◽

pp. 1975-1983 ◽

Cited By ~ 13

Author(s):

Moath Mohammad Al Malki ◽

Raja Muhammad Awais Khan ◽

Abbas Saeed Hakeem ◽

Stuart Hampshire ◽

Tahar Laoui

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Phase Formation ◽

Fine Grained ◽

Metal Precursor ◽

Plasma Sintering ◽

Spark Plasma

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Contact-mechanical properties at pre-creep temperatures of fine-grained graphene/SiC composites prepared in situ by spark-plasma sintering

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2013.11.003 ◽

2014 ◽

Vol 34 (5) ◽

pp. 1433-1438 ◽

Cited By ~ 20

Author(s):

Benito Román-Manso ◽

Estíbaliz Sánchez-González ◽

Angel L. Ortiz ◽

Manuel Belmonte ◽

M. Isabel Osendi ◽

...

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Fine Grained ◽

Plasma Sintering ◽

Spark Plasma ◽

Sic Composites ◽

Contact Mechanical

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Preparation of SiCw-ZTA Composites by Two-Step Sintering or Spark Plasma Sintering

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.226.59 ◽

2015 ◽

Vol 226 ◽

pp. 59-64

Author(s):

Elwira Czerska ◽

Waldemar Pyda ◽

Norbert Moskała ◽

Andrzej Huczko ◽

Agnieszka Dąbrowska

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Cutting Tool ◽

Fine Grained ◽

Plasma Sintering ◽

Different Temperatures ◽

Sic Whiskers ◽

Spark Plasma ◽

Sic Composites

Alumina materials are widely used in the industry as cutting tool inserts. In order to improve mechanical properties of the Al2O3 matrix, different reinforcing phases are introduced. In the presented work, reinforcements in the form of ZrO2 particles and SiC nanofibres have been used. ZTA-SiC composites were obtained from 0.5%MgO-20%(3Y2O3)ZrO2-79.5%Al2O3 powder and 15% of SiC whiskers. Tested materials have been prepared by means of the two-step sintering (TSS) and spark plasma sintering (SPS). TSS method permits to obtain dense materials with fine-grained microstructure. TSS has been carried out for two different sintering times: 1 hour 20 minutes and 8 hours. Due to the reactivity of the components, the SPS method has been used to shorten sintering times. SPS has been performed at two different temperatures: 1500 °C and 1550 °C.

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