Properties and densification of nanocrystalline MoSi2–Si3N4 composite from mechanically alloyed powders by pulsed current-activated sintering

2010 ◽  
Vol 502 (1) ◽  
pp. L10-L13 ◽  
Author(s):  
In-Young Ko ◽  
Hyun-Su Kang ◽  
Jung-Mann Doh ◽  
Jin-Kook Yoon ◽  
In-Jin Shon
Keyword(s):  
Pulsed Current ◽  
Mechanically Alloyed ◽  
Activated Sintering

Rapid Consolidation of Nanocrystalline Al2O3 Reinforced Cr Composite from Mechanically Alloyed Powders by Pulsed Current Activated Sintering

2010 ◽  
Vol 123-125 ◽  
pp. 197-200 ◽  
Author(s):  
In Jin Shon ◽  
Hyun Su Kang ◽  
Dong Mok Lee ◽  
Kwon Il Na ◽  
In Yong Ko
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
High Energy ◽  
Pulsed Current ◽  
Mechanically Alloyed ◽  
Activated Sintering ◽  
Simultaneous Application ◽  
Al2o3 Composite ◽  
Average Grain Size ◽  
Energy Ball

Nanopowders of Cr and Al2O3 was fabricated from CrO3 and 2Al by high energy ball milling. Dense nanocrystalline Cr-Al2O3 composite was consolidated by pulsed current activated sintering (PCAS) method within 1 min from mechanically alloyed powders. Highly dense Cr-Al2O3 with relative density of up to 99% was produced under simultaneous application of a 80 MPa pressure and the pulsed current. The average grain size and mechanical properties of the composite were investigated.

Development of Mechanically Alloyed and Sintered W-1 wt.% Ni Matrix Composites Reinforced with TiB2

2012 ◽  
Vol 194 ◽  
pp. 194-198 ◽  
Author(s):  
Duygu Ağaoğulları ◽  
Özge Balci ◽  
Ö. Utku Demirkan ◽  
Hasan Gökçe ◽  
Aziz Genç ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Relative Density ◽  
Physical And Mechanical Properties ◽  
Matrix Composites ◽  
Combined Method ◽  
Mechanically Alloyed ◽  
Activated Sintering ◽  
Sintering Aid ◽  
Reinforcing Agent

Due to improve the physical and mechanical properties of Ni activated W compacts, TiB2 was added to the W-Ni matrix as reinforcing agent. W-Ni matrix composites were fabricated by using a combined method of mechanical alloying (MA), cold pressing and activated sintering. The amount of activated sintering aid (Ni) was kept constant as 1 wt.%. The effects of TiB2 content and mechanical alloying duration on the physical, microstructural and mechanical properties of activated sintered W-Ni compacts were investigated. The results showed that TiB2 particles have a significant effect on the density and microhardness values of the sintered samples. After MA and sintering, formation of W2B and NiTi intermetallic compounds were observed because of the decomposition of TiB2. The relative density value of 91.21 % and microhardness value of 4.08±0.28 GPa of W-1 wt.% Ni samples respectively increased to 94.88 % and 5.64±0.28 GPa with the addition of 2 wt.% TiB2.

Fabrication of Biocompatible β-Ti-Nb-Sn Alloy by Pulsed Current Activated Sintering Using High Energy Ball Milled Powder

2009 ◽  
Vol 1 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Abdel-Nasser Omran ◽  
Kee Do Woo ◽  
Eui Pyo Kwon ◽  
Nasser A. Barakat ◽  
Hyun Bom. Lee ◽  
...  
Keyword(s):  
Milled Powder ◽  
High Energy ◽  
Pulsed Current ◽  
Activated Sintering ◽  
Energy Ball

scholarly journals Mechanical Properties and Fabrication of TiAl Alloy by Pulsed Current Activated Sintering

2010 ◽  
Vol 17 (5) ◽  
pp. 373-378
Author(s):  
Song-Lee Du ◽  
Na-Ri Kim ◽  
Won-Baek Kim ◽  
Sung-Wook Cho ◽  
In-Jin Shon
Keyword(s):  
Mechanical Properties ◽  
Tial Alloy ◽  
Pulsed Current ◽  
Activated Sintering
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