Densification and alloying of ball milled Silicon-Germanium powder mixture during spark plasma sintering

2017 ◽  
Vol 28 (2) ◽  
pp. 506-513 ◽  
Author(s):  
R. Murugasami ◽  
P. Vivekanandhan ◽  
S. Kumaran ◽  
R. Suresh Kumar ◽  
T. John Tharakan
2017 ◽  
Vol 70 (3) ◽  
pp. 855-860
Author(s):  
R. Murugasami ◽  
P. Vivekanandhan ◽  
S. Kumaran ◽  
R. Suresh Kumar ◽  
T. John Tharakan

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

2016 ◽  
Vol 703 ◽  
pp. 70-75 ◽  
Author(s):  
Zhen Ye Zhu ◽  
Shi Lei Guo

High dense p-type Si95Ge5 doped with nanoSi70Ge30B5particles thermoelectric materials were firstly fabricated by mechanical alloying (MA) and spark plasma sintering (SPS) method. The effects of different nanoSi70Ge30B5 doping content on the thermoelectric and phase properties were studied. A dimensionless thermoelectric figure-of-merit (ZT) of 0.47 at 710K in p-type nanocomposite bulk silicon germanium (SiGe) alloys is achieved. The enhancement of ZT is due to a large reduction of thermal conductivity caused by the increased grain boundaries of the numerous nanograins that effectively scatter long wavelength phonons.


2012 ◽  
Vol 1 (6) ◽  
pp. 299-305 ◽  
Author(s):  
Daniel Thompson ◽  
Dale Hitchcock ◽  
Ali Lahwal ◽  
T. M. Tritt

2017 ◽  
Vol 62 (2) ◽  
pp. 1407-1410
Author(s):  
Y.-K. Jeong ◽  
Y.S. Kim ◽  
S.-T. Oh

AbstractAn optimum route to fabricate the Cu-based SiC composites with homogeneous microstructure was investigated. Three methods for developing the densified composites with sound interface between Cu and SiC were compared on the basis of the resulting microstructures. Starting with three powder mixtures of elemental Cu and SiC, elemental Cu and PCS coated SiC or PCS and Cunitrate coated SiC was used to obtain Cu-based SiC composites. SEM analysis revealed that the composite fabricated by spark plasma sintering using elemental SiC and Cu powder mixture showed inhomogeneous microstructure. Conversely, dense microstructure with sound interface was observed in the sintered composites using powder mixture of pre-coated PCS and Cu-nitrate onto SiC. The relationship between powder processing and microstructure was discussed based on the role of coating layer for the wettability


2014 ◽  
Vol 14 (8) ◽  
pp. 1051-1056 ◽  
Author(s):  
Hung Quang Trinh ◽  
Jin Oh Jo ◽  
Sang Baek Lee ◽  
Young Sun Mok

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