Removing prior particle boundaries in a powder superalloy based on the interaction between pulsed electric current and chain-like structure

2021 ◽  
Vol 87 ◽  
pp. 95-100
Author(s):  
Shuyang Qin ◽  
Longge Yan ◽  
Xinfang Zhang
Keyword(s):  
Electric Current ◽  
Pulsed Electric Current

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.

Microstructure and properties of Ni–Mn–Ga alloys produced by rapid solidification and pulsed electric current sintering

2011 ◽  
Vol 509 (20) ◽  
pp. 5981-5987 ◽  
Author(s):  
Outi Söderberg ◽  
David Brown ◽  
Ilkka Aaltio ◽  
Jussi Oksanen ◽  
Jesse Syrén ◽  
...  
Keyword(s):  
Electric Current ◽  
Rapid Solidification ◽  
Microstructure And Properties ◽  
Pulsed Electric Current
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