Reactivity of materials towards carbon of graphite foil during Spark Plasma Sintering: A case study using Ni–W powders

2016 ◽  
Vol 168 ◽  
pp. 62-67 ◽  
Author(s):  
Dina V. Dudina ◽  
Boris B. Bokhonov ◽  
Arina V. Ukhina ◽  
Alexander G. Anisimov ◽  
Vyacheslav I. Mali ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Graphite Foil ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Mechanism of Carbon Contamination in Transparent MgAl2O4 and Y3Al5O12 Ceramics Sintered by Spark Plasma Sintering

Ceramics ◽  
2019 ◽  
Vol 2 (4) ◽  
pp. 612-619 ◽  
Author(s):  
Hussein Hammoud ◽  
Vincent Garnier ◽  
Gilbert Fantozzi ◽  
Etienne Lachaud ◽  
Solène Tadier
Keyword(s):  
Optical Properties ◽  
Spark Plasma Sintering ◽  
Carbon Clusters ◽  
Graphite Foil ◽  
Raman Analysis ◽  
Carbon Contamination ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
And Diffusion ◽  
Sps Sintering

An investigation of MgAl2O4 spinel and Y3Al2O5 (YAG) materials sintered by spark plasma sintering (SPS) was performed. The optical properties of the materials are modified depending on the powder source and the SPS sintering conditions. Spectrophotometer and Raman analysis are presented in this work, along with optical and scanning electron microscope (SEM) observations and cathodoluminescence analysis. The results show a correlation between carbon contamination and the optical properties of the materials. Herein, the source of the contamination is explained, along with its genesis and diffusion. The carbon contamination originates from the powder itself (carbonates), as well as the SPS environment (papiex® graphite foil, graphite die, graphite felt) to form carbon clusters. During the high-temperature SPS process, carbon from those carbon clusters diffuses, resulting in an increase in the contamination volume, thereby increasing the light absorption.

Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3-Mg(Ca)TiO3 Sandwich

2014 ◽  
Vol 606 ◽  
pp. 205-208
Author(s):  
Pavel Ctibor ◽  
Tomáš Kubatík ◽  
Pavel Chráska
Keyword(s):  
Spark Plasma Sintering ◽  
Polarized Light ◽  
Ceramic Materials ◽  
Cross Sectional ◽  
Plasma Sintering ◽  
Rapid Fabrication ◽  
Spark Plasma ◽  
Sectional Measurement ◽  
The Individual

Spark plasma sintering enables very rapid fabrication of bulk ceramic materials. Suitability of this technique for preparing of multilayer ceramic discs is up to now relatively seldom reported. Our work is focused on a bi-layered disc consisting of thick Al2O3 layer and comparably thick Mg (Ca)TiO3 (MCT) layer sintered in one run. Al2O3 powder was nanometric (less than 40 nm) and composed of the hexagonal α-phase whereas MCT is a solid solution of two orthorombic perovskites. Pre-sintered and crushed MCT powder was coarser than alumina, up to 125 μm. The purpose of this material combination was creating of dielectric sandwich consisting of capacitor MCT material and resistor nanoalumina material. Spark plasma sintering run was done at 1200 °C, using pressure 80 MPa and dwell time only 2 min. Resulting sandwich was subjected to microstructural observations and cross sectional measurement of microhardness. On the border between Al2O3 and MCT the microhardness was higher than in MCT but has markedly higher dispersion than in the individual components. The MCT material exhibits birefringence in the polarized light [1]. We attempted to correlate the microhardness of individual MCT grains to their orientation indicated by birefringence.

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

2011 ◽  
Vol 49 (01) ◽  
pp. 40-45 ◽  
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

Effect of spark plasma sintering temperature on structure and phase composition of Ti-Al-Nb-based alloys

2017 ◽  
Vol 59 (11-12) ◽  
pp. 1033-1036 ◽  
Author(s):  
Sherzod Kurbanbekov ◽  
Mazhyn Skakov ◽  
Viktor Baklanov ◽  
Batyrzhan Karakozov
Keyword(s):  
Phase Composition ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma

Fabrication of TiB2/TiC Composites by Spark Plasma Sintering

2012 ◽  
Vol 27 (9) ◽  
pp. 961-964 ◽  
Author(s):  
Zhi-Qiang MA ◽  
Ying-Hu JI ◽  
Lian-Jun WANG
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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