Densification mechanism of Ti-based metallic glass powders during spark plasma sintering process

2015 ◽  
Vol 66 ◽  
pp. 1-7 ◽  
Author(s):  
L.H. Liu ◽  
C. Yang ◽  
Y.G. Yao ◽  
F. Wang ◽  
W.W. Zhang ◽  
...  
2021 ◽  
Vol 850 ◽  
pp. 156724
Author(s):  
Huaping Ding ◽  
Zhankui Zhao ◽  
Junsong Jin ◽  
Lei Deng ◽  
Pan Gong ◽  
...  

2006 ◽  
Vol 55 (8) ◽  
pp. 687-690 ◽  
Author(s):  
Guoqiang Xie ◽  
Wei Zhang ◽  
Dmitri V. Louzguine-Luzgin ◽  
Hisamichi Kimura ◽  
Akihisa Inoue

2007 ◽  
Vol 534-536 ◽  
pp. 501-504 ◽  
Author(s):  
J.K. Lee ◽  
H.J. Kim ◽  
Taek Soo Kim ◽  
Seung Y. Shin ◽  
Jung Chan Bae

Bulk metallic glass (BMG) composites combining a Cu54Ni6Zr22Ti18 matrix with brass powders or Zr62Al8Ni13Cu17 metallic glass powders were fabricated by spark plasma sintering. The brass powders and Zr-based metallic glass powders added for the enhancement of plasticity are well distributed homogeneously in the Cu-based metallic glass matrix after consolidation. The matrix of the BMG composite remains as a fully amorphous structure after spark plasma sintering. The BMG composites show macroscopic plasticity after yielding, and the plastic strain increased to around 2% without a decrease in strength for the composite material containing 20 vol% Zr-based amorphous powders. The proper combination of strength and plasticity in the BMG composites was obtained by introducing a second phase in the metallic glass matrix.


2011 ◽  
Vol 49 (01) ◽  
pp. 40-45 ◽  
Author(s):  
Hyun-Kuk Park ◽  
Seung-Min Lee ◽  
Hee-Jun Youn ◽  
Ki-Sang Bang ◽  
Ik-Hyun Oh

2007 ◽  
Vol 352 ◽  
pp. 227-231 ◽  
Author(s):  
Qiang Shen ◽  
Z.D. Wei ◽  
Mei Juan Li ◽  
Lian Meng Zhang

AlN ceramics doped with yttrium oxide (Y2O3) as the sintering additive were prepared via the spark plasma sintering (SPS) technique. The sintering behaviors and densification mechanism were mainly investigated. The results showed that Y2O3 addition could promote the AlN densification. Y2O3-doped AlN samples could be densified at low temperatures of 1600-1700oC in 20-25 minutes. The AlN samples were characterized with homogeneous microstructure. The Y-Al-O compounds were created on the grain boundaries due to the reactions between Y2O3 and Al2O3 on AlN particle surface. With increasing the sintering temperature, AlN grains grew up, and the location of grain boundaries as well as the phase compositions changed. The Y/Al ratio in the aluminates increased, from Y3Al5O12 to YAlO3 and to Y4Al2O9. High-density, the growth of AlN grains and the homogenous dispersion of boundary phase were helpful to improve the thermal conductivity of AlN ceramics. The thermal conductivity of 122Wm-1K-1 for the 4.0 mass%Y2O3-doped AlN sample was reached.


Author(s):  
B Stalin ◽  
M Ravichandran ◽  
M Balasubramanian ◽  
C Anand Chairman ◽  
D Pritima ◽  
...  

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