Effect of pulsed DC current on neck growth between tungsten wires and tungsten plates during the initial stage of sintering by the spark plasma sintering method

2011 ◽  
Vol 47 (5) ◽  
pp. 2201-2205 ◽  
Author(s):  
Naoki Toyofuku ◽  
Takuya Kuramoto ◽  
Takahito Imai ◽  
Manshi Ohyanagi ◽  
Zuhair A. Munir
Keyword(s):  
Spark Plasma Sintering ◽  
Neck Growth ◽  
Plasma Sintering ◽  
Pulsed Dc ◽  
Initial Stage ◽  
Spark Plasma ◽  
Dc Current ◽  
Sintering Method ◽  
And Tungsten

Reduction of Contact Resistance between NaxCoO2 Thermoelectric Chip and Ag Electrode by Using Spark Plasma Sintering Method.

2014 ◽  
Vol 1642 ◽  
Author(s):  
Haruna Hachiya ◽  
Koya Arai ◽  
Tomoyuki Nakamura ◽  
Masahiro Minowa ◽  
Yuki Yamaguchi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Contact Resistance ◽  
Spark Plasma Sintering ◽  
Interface Resistance ◽  
Ag Electrode ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ag Paste ◽  
Dc Current ◽  
Sintering Method

ABSTRACTNaxCoO2 has a particularly high contact resistance because it forms an insulated layer of NaHCO3 and Na2CO3, which are produced in a chemical reaction with carbon dioxide and water in air on the surface. In this study, we tried to improve the interface resistance between NaxCoO2 and Ag sheet electrodes by connecting these materials with the spark plasma sintering (SPS) technique. The interface resistance between NaxCoO2 and Ag sheet electrodes connected by SPS is compared with that connected with Ag paste. In an experiment, the interface resistance of a sample treated by decrease to less than 1/600 of the former value. It is thought that the NaHCO3 and Na2CO3 insulated layer is decomposed through the application of a large value of applied DC current by using the SPS technique.

scholarly journals Influence of pulsed DC current and electric field on growth of carbide ceramics during spark plasma sintering

2008 ◽  
Vol 116 (1359) ◽  
pp. 1187-1192 ◽  
Author(s):  
Takayuki KONDO ◽  
Taku KURAMOTO ◽  
Yasuhiro KODERA ◽  
Manshi OHYANAGI ◽  
Zuhair A. MUNIR
Keyword(s):  
Electric Field ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Pulsed Dc ◽  
Spark Plasma ◽  
Carbide Ceramics ◽  
Dc Current

Preparation of MoSi2-SiB6 oxidation inhibition coating on graphite by spark plasma sintering method

2021 ◽  
Vol 405 ◽  
pp. 126511
Author(s):  
Weisheng Liu ◽  
Xuanru Ren ◽  
Hongao Chu ◽  
Menglin Zhang ◽  
Qingqing Yang ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

scholarly journals Fabrication of ZnO Ceramics with Defects by Spark Plasma Sintering Method and Investigations of Their Photoelectrochemical Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2506
Author(s):  
Liren Zheng ◽  
Mu Liu ◽  
Haipeng Zhang ◽  
Zhaoke Zheng ◽  
Zeyan Wang ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Oxygen Vacancies ◽  
Photoelectrochemical Properties ◽  
Interstitial Zinc ◽  
Photoelectric Properties ◽  
Oxygen Defects ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method ◽  
Zno Ceramics

ZnO, as an important semiconductor material, has attracted much attention due to its excellent physical properties, which can be widely used in many fields. Notably, the defects concentration and type greatly affect the intrinsic properties of ZnO. Thus, controllable adjustment of ZnO defects is particularly important for studying its photoelectric properties. In this work, we fabricated ZnO ceramics (ZnO(C)) with different defects through spark plasma sintering (SPS) process by varying sintering temperature and using reduction environment. The experimental results indicate that the changes of color and light absorption in as-prepared ZnO originate from the different kinds of defects, i.e., oxygen vacancies (VO), interstitial zinc (Zni), and Zinc vacancies (VZn). Moreover, with the increase in calcination temperature, the concentration of oxygen defects and interstitial zinc defects in the ceramics increases gradually, and the conductivity of the ceramics is also improved. However, too many defects are harmful to the photoelectrochemical properties of the ceramics, and the appropriate oxygen defects can improve the utilization of visible light.

Biodegradable Fiber Reinforced Ti Composite Fabricated by Spark Plasma Sintering Method

2007 ◽  
pp. 3201-3206
Author(s):  
Hisashi Sato ◽  
Seiichiro Umaoka ◽  
Yoshimi Watanabe ◽  
Ick Soo Kim ◽  
Masakazu Kawahara ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Fiber Reinforced ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method
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