Improvement of oxidation resistance of a Mo-62Si-5B (at.%) alloy at 1250 °C and 1350 °C via an in situ pre-formed SiO2 fabricated by spark plasma sintering

2017 ◽  
Vol 127 ◽  
pp. 175-185 ◽  
Author(s):  
S.H. Wen ◽  
C.G. Zhou ◽  
J.B. Sha
Keyword(s):  
Oxidation Resistance ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Oxidation of Nb/Nb5Si3 In Situ Composites Fabricated via Spark Plasma Sintering with Al Addition

2013 ◽  
Vol 376 ◽  
pp. 49-53 ◽  
Author(s):  
Wen Yuan Long ◽  
Xiang Yan Zou ◽  
Wei Dong Wang ◽  
Jun Ping Yao
Keyword(s):  
Oxidation Resistance ◽  
Spark Plasma Sintering ◽  
Raw Materials ◽  
Oxidation Behaviour ◽  
X Ray Diffraction ◽  
In Situ Composites ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Al Addition

Dense Nb/Nb5Si3composites were fabricated via spark plasma sintering technology using Nb, Si, and Al elemental powders as raw materials. The microstructures of the synthesised composites were analysed through scanning electron microscopy, X-ray diffraction, and electron probe microanalysis. The results show that the composites consisted of residual Nb particle phase and Nb5Si3phase. The microstructure of the Nb/ Nb5Si3in situ composites was evidently affected by Al addition, which prompted the formation of the Al3Nb10Si3phase. The oxidation resistance of the Nb/Nb5Si3in situ composites significantly improved with the increase in Al addition. Pesting oxidation behaviour was exhibited at 800°C by the Nb-20Si composites when exposed to air for 4h. This pest oxidation behaviour is not exhibited by the Nb-20Si-10Al and Nb-20Si-15Al composites after exposure to air for ~10h. The composite exhibits the best oxidation resistance at 15at% Al.

scholarly journals Microstructure and properties of nano-laminated Y3Si2C2 ceramics fabricated via in situ reaction by spark plasma sintering

2021 ◽  
Vol 10 (3) ◽  
pp. 578-586
Author(s):  
Lin-Kun Shi ◽  
Xiaobing Zhou ◽  
Jian-Qing Dai ◽  
Ke Chen ◽  
Zhengren Huang ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Atomic Scale ◽  
Max Phase ◽  
X Ray Diffraction ◽  
Selected Area Electron Diffraction ◽  
Plasma Sintering ◽  
Transmission Electron ◽  
Spark Plasma ◽  
Diffraction Patterns

AbstractA nano-laminated Y3Si2C2 ceramic material was successfully synthesized via an in situ reaction between YH2 and SiC using spark plasma sintering technology. A MAX phase-like ternary layered structure of Y3Si2C2 was observed at the atomic-scale by high resolution transmission electron microscopy. The lattice parameters calculated from both X-ray diffraction and selected area electron diffraction patterns are in good agreement with the reported theoretical results. The nano-laminated fracture of kink boundaries, delamination, and slipping were observed at the tip of the Vickers indents. The elastic modulus and Vickers hardness of Y3Si2C2 ceramics (with 5.5 wt% Y2O3) sintered at 1500 °C were 156 and 6.4 GPa, respectively. The corresponding values of thermal and electrical conductivity were 13.7 W·m-1·K-1 and 6.3×105 S·m-1, respectively.

scholarly journals B6O ceramic by in-situ reactive spark plasma sintering of a B2O3 and B powder mixture

2014 ◽  
Vol 122 (1425) ◽  
pp. 336-340 ◽  
Author(s):  
Ievgen SOLODKYI ◽  
Hanna BORODIANSKA ◽  
Ting ZHAO ◽  
Yoshio SAKKA ◽  
Petre BADICA ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixture ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals In-situ creep law determination for modeling Spark Plasma Sintering of TiAl 48-2-2 powder

2017 ◽  
Vol 86 ◽  
pp. 147-155 ◽  
Author(s):  
David Martins ◽  
Fanny Grumbach ◽  
Charles Manière ◽  
Pierre Sallot ◽  
Katia Mocellin ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

In-situ synthesis and densification of boron carbide and boron carbide-graphene nanoplatelet composite by reactive spark plasma sintering

2018 ◽  
Vol 44 (17) ◽  
pp. 21132-21137 ◽  
Author(s):  
Rajath Alexander ◽  
T.S.R. Ch. Murthy ◽  
K. Vasanthakumar ◽  
N.S. Karthiselva ◽  
Srinivasa Rao Bakshi ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Spark Plasma Sintering ◽  
In Situ Synthesis ◽  
Graphene Nanoplatelet ◽  
Plasma Sintering ◽  
Spark Plasma
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