The Effect of the Electrical Properties on the Pulsed Electric Current Sintering Behavior of ZrO2 Based Ceramic Composites

2009 ◽  
pp. 67-78
Author(s):  
K. Vanmeensel ◽  
B. Neirinck ◽  
S. Huang ◽  
S. Salehi ◽  
O. Van der Biest ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Electric Current ◽  
Ceramic Composites ◽  
Sintering Behavior ◽  
Pulsed Electric Current

Simple Fabrication and Carrier Type Modification of Semi-Conductive C/Al2O3 Composites by Powder Mixtures and Pulsed Electric Current Sintering

2021 ◽  
Author(s):  
Huu Hien Nguyen ◽  
Yunzi Xin ◽  
Takashi Shirai
Keyword(s):  
Electrical Properties ◽  
Electric Current ◽  
Powder Mixture ◽  
Ceramic Composites ◽  
Homogeneous Distribution ◽  
Polycarboxylic Acid ◽  
Pulsed Electric Current ◽  
Conventional Sintering ◽  
Conductive Ceramics ◽  
Carbon Fillers

Abstract Semi-conductive C/Al2O3 ceramic composites were successfully fabricated by a pretty simple approach, combining a powder mixture process and pulsed electric current sintering. In order to obtain homogeneous distribution of carbon contents, popular polymers were used as carbon fillers to mix with Al2O3 powder by a wet ball milling step. The sintering was conducted by pulsed electric current sintering without any special requirement of the reductive environment like in conventional sintering. Density of bulk bodies, states of carbon contents after sintering and the electrical properties were analyzed in this study. Although the density of sintered bodies and their electrical properties were not superior, those characteristics of C/Al2O3 ceramic composites in this study were still comparatively high among semi-conductive ceramics. Especially, the carrier type of semi-conductive C/Al2O3 composites could be modified easily by adding polycarboxylic acid (PCA) in the powder mixture as a dispersant.

Sintering behavior and alloying elements effects on the properties of CP-Titanium sintered using pulsed electric current

2020 ◽  
Vol 256 ◽  
pp. 123707
Author(s):  
Samson Olaitan Jeje ◽  
Mxolisi Brendon Shongwe ◽  
Nthabiseng Maledi ◽  
Enoch Nifise Ogunmuyiwa ◽  
Lerato Criselda Tshabalala ◽  
...  
Keyword(s):  
Electric Current ◽  
Alloying Elements ◽  
Sintering Behavior ◽  
Pulsed Electric Current

scholarly journals Sintering behavior of M0.25Ce0.75O1.875 (M=Dy, Gd) ceramics fabricated using pulsed electric current sintering method

2007 ◽  
Vol 32 (4) ◽  
pp. 947-950
Author(s):  
Hirokazu Suga ◽  
Toshiyuki Mori ◽  
Fei Ye ◽  
Ding Rong Ou ◽  
Richard Buchanan ◽  
...  
Keyword(s):  
Electric Current ◽  
Sintering Behavior ◽  
Pulsed Electric Current ◽  
Sintering Method

Sapphire/Nd:YAG composite by pulsed electric current bonding for high-average-power lasers

2018 ◽  
Vol 43 (13) ◽  
pp. 3065 ◽  
Author(s):  
Hiroaki Furuse ◽  
Yuki Koike ◽  
Ryo Yasuhara
Keyword(s):  
Electric Current ◽  
Average Power ◽  
High Average Power ◽  
Pulsed Electric Current

Pulsed Electric Current Sintered Cr2O3-rGO Composites

2016 ◽  
Vol 721 ◽  
pp. 419-424
Author(s):  
M. Erkin Cura ◽  
Vivek Kumar Singh ◽  
Panu Viitaharju ◽  
Joonas Lehtonen ◽  
Simo Pekka Hannula
Keyword(s):  
Fracture Toughness ◽  
Graphene Oxide ◽  
Electric Current ◽  
Chromium Oxide ◽  
High Hardness ◽  
High Wear Resistance ◽  
Carbide Formation ◽  
Indentation Fracture ◽  
Pulsed Electric Current ◽  
Indentation Fracture Toughness

Chromium oxide is a promising material for applications where excellent corrosion resistance, high hardness, and high wear resistance are needed. However, its use is limited because of low fracture toughness. Improvement of fracture toughness of chromium oxide while maintaining its afore mentioned key properties is therefore of high interest. In this communication we study the possibility of increasing the toughness of pulsed electric current sintered (PECS) chromium oxide by the addition of graphene oxide (GO). The indentation fracture toughness was improved markedly with the addition of graphene oxide. Materials prepared by direct chemical homogenization had better fracture toughness. In composites with 10 vol.% GO piling of thin graphene oxide layers resulted in the formation of graphite layers between Cr2O3 and in carbide formation, which were observed to be the main reasons for the degradation of the mechanical properties. The distribution of graphene oxide was more homogeneous, when the GO amount was 0.1 vol.% and the formation of graphitic layers were avoided due to lesser amount of GO as well as ultrasonic treatment following the ball milling.

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