Densification Behavior of Calcium Phosphates on Spark Plasma Sintering

2006 ◽  
Vol 309-311 ◽  
pp. 171-174 ◽  
Author(s):  
Daisuke Kawagoe ◽  
Yoshihiro Koga ◽  
Noriko Kotobuki ◽  
Hajime Ohgushi ◽  
Emile Hideki Ishida ◽  
...  
Keyword(s):  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Tricalcium Phosphate ◽  
Early Stage ◽  
Calcium Phosphates ◽  
The Other ◽  
Transparent Ceramics ◽  
Densification Behavior ◽  
Plasma Sintering ◽  
Spark Plasma

Ceramics of hydroxyapatite (Ca10(PO4)6(OH)2: HA) and β-tricalcium phosphate (β-Ca3(PO4)2: β-TCP), were prepared by spark plasma sintering (SPS) at the temperatures from 800 °C to 1000 °C for 10 min with a heating rate of 25 °C·min-1. The HA ceramics prepared at 900 °C and 1000 °C showed transparency. On the other hands, transparent β-TCP ceramics was obtained by SPS at 1000 °C. In analysis of the densification behavior during sintering of HA and β-TCP by SPS, dominant sintering mechanism was plastic flow in the early stage of densification. Transparent ceramics should be the most suitable materilas to investigate the interface between human cells and ceramics.

Densification Behavior of Calcium Phosphates on Spark Plasma Sintering

2006 ◽  
pp. 171-174
Author(s):  
Daisuke Kawagoe ◽  
Yoshihiro Koga ◽  
Noriko Kotobuki ◽  
Hajime Ohgushi ◽  
Emile Hideki Ishida ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Calcium Phosphates ◽  
Densification Behavior ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Comparison of Conventional and Flash Spark Plasma Sintering of Cu–Cr Pseudo-Alloys: Kinetics, Structure, Properties

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 141
Author(s):  
Kirill V. Kuskov ◽  
Mohammad Abedi ◽  
Dmitry O. Moskovskikh ◽  
Illia Serhiienko ◽  
Alexander S. Mukasyan
Keyword(s):  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Electric Circuits ◽  
Nanostructured Particles ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
The Media ◽  
Copper Chromium ◽  
Kinetics Of ◽  
Structure Properties

Spark plasma sintering (SPS) is widely used for the consolidation of different materials. Copper-based pseudo alloys have found a variety of applications including as electrodes in vacuum interrupters of high-voltage electric circuits. How does the kinetics of SPS consolidation for such alloys depend on the heating rate? Do SPS kinetics depend on the microstructure of the media to be sintered? These questions were addressed by the investigation of SPS kinetics in the heating rate range of 0.1 to 50 K/s. The latter conditions were achieved through flash spark plasma sintering (FSPS). We also compared the sintering kinetics for the conventional copper–chromium mixture and for the mechanically induced copper/chromium nanostructured particles. It was shown that, under FSPS conditions, the observed maximum consolidation rates were 20–30 times higher than that for conventional SPS with a heating rate of 100 K/min. Under the investigated conditions, the sintering rate for mechanically induced composite Cu/Cr particles was 2–4 times higher compared to the conventional Cu + Cr mixtures. The apparent sintering activation energy for the Cu/Cr powder was twice less than that for Cu–Cr mixture. It was concluded that the FSPS of nanostructured powders is an efficient approach for the fabrication of pseudo-alloys.

Impact of Heating Rate on the Tribological and Corrosion Properties of AISI 52100 Bearing Steel Consolidated via Spark Plasma Sintering

2021 ◽  
Author(s):  
Akeem Yusuf Adesina ◽  
Muzafar Hussain ◽  
Abbas Saeed Hakeem ◽  
Abdul Samad Mohammed ◽  
Muhammad Ali Ehsan ◽  
...  
Keyword(s):  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Bearing Steel ◽  
Corrosion Properties ◽  
Plasma Sintering ◽  
Aisi 52100 ◽  
Spark Plasma

scholarly journals Effect of heating rate on properties of transparent aluminum oxynitride sintered by spark plasma sintering

2018 ◽  
Author(s):  
Yingchun Shan ◽  
Xialu Wei ◽  
Xiannian Sun ◽  
Elisa Torresani ◽  
Eugene A. Olevsky ◽  
...  
Keyword(s):  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Aluminum Oxynitride ◽  
Plasma Sintering ◽  
Spark Plasma

Spark Plasma Sintering of Load-Bearing Iron–Carbon Nanotube-Tricalcium Phosphate CerMets for Orthopaedic Applications

JOM ◽  
2016 ◽  
Vol 68 (4) ◽  
pp. 1134-1142 ◽  
Author(s):  
Edgar B. Montufar ◽  
Miroslava Horynová ◽  
Mariano Casas-Luna ◽  
Sebastián Diaz-de-la-Torre ◽  
Ladislav Celko ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Tricalcium Phosphate ◽  
Load Bearing ◽  
Plasma Sintering ◽  
Spark Plasma

Spark plasma sintering of aluminium nitride transparent ceramics

2004 ◽  
Vol 20 (9) ◽  
pp. 1097-1099 ◽  
Author(s):  
Z.Y. Fu ◽  
J.F. Liu ◽  
H. Wang ◽  
D.H. He ◽  
Q.J. Zhang
Keyword(s):  
Spark Plasma Sintering ◽  
Aluminium Nitride ◽  
Transparent Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma

Microstructure and Mechanical Properties of Spark-Plasma-Sintered SiC-TiC Composites

2005 ◽  
Vol 287 ◽  
pp. 335-339 ◽  
Author(s):  
Kyeong Sik Cho ◽  
Kwang Soon Lee
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Applied Pressure ◽  
Argon Atmosphere ◽  
Full Density ◽  
Plasma Sintering ◽  
Spark Plasma

Rapid densification of the SiC-10, 20, 30, 40wt% TiC powder with Al, B and C additives was carried out by spark plasma sintering (SPS). In the present SPS process, the heating rate and applied pressure were kept at 100°C/min and at 40 MPa, while the sintering temperature varied from 1600-1800°C in an argon atmosphere. The full density of SiC-TiC composites was achieved at a temperature above 1800°C by spark plasma sintering. The 3C phase of SiC in the composites was transformed to 6H and 4H by increasing the process temperature and the TiC content. By tailoring the microstructure of the spark-plasma-sintered SiC-TiC composites, their toughness could be maintained without a notable reduction in strength. The strength of 720 MPa and the fracture toughness of 6.3 MPa·m1/2 were obtained in the SiC-40wt% TiC composite prepared at 1800°C for 20 min.

scholarly journals Fracture Mechanism of Interpenetrating Iron-Tricalcium Phosphate Composite

2016 ◽  
Vol 258 ◽  
pp. 333-336
Author(s):  
Miroslava Horynová ◽  
Mariano Casas Luna ◽  
Edgar Benjamin Montúfar Jimenéz ◽  
Sebastián Díaz de la Torre ◽  
Ladislav Čelko ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Spark Plasma Sintering ◽  
Tricalcium Phosphate ◽  
Fracture Mechanism ◽  
Bone Fractures ◽  
Strength Test ◽  
Tensile Strength Test ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Diametral Tensile Strength

The usage of iron alloys for bone fractures treatment has been limited due to its high density and elastic modulus, as compared to bone. In contrast, the use of tricalcium phosphate (TCP), a ceramic that promotes bone healing, is mostly limited by its brittle nature. In the present work the fracture mechanism of a novel iron-TCP interpenetrated composite fabricated by spark plasma sintering was studied. Specimens were subjected to a diametral tensile-strength-test. The work of fracture was determined by indirect tensile loading conditions using the diametral tensile strength test. The results revealed that iron has a clear toughening effect on the microstructure of tricalcium phosphate specimens consolidated by spark plasma sintering. This is a promising result to overcome the limited usage of tricalcium phosphate to treat only non-load bearing bone defects.

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