scholarly journals Pulsed Current Sintering of Mechanically Alloyed Ni-Ti Powder

1999 ◽  
Vol 63 (9) ◽  
pp. 1161-1164 ◽  
Author(s):  
Keizo Kobayashi ◽  
Akihiro Matsumoto ◽  
Kimihiro Ozaki ◽  
Akira Sugiyama ◽  
Toshiyuki Nishio
Keyword(s):  
Pulsed Current ◽  
Mechanically Alloyed ◽  
Ti Powder

scholarly journals Influence of Milling Media on the Mechanical Alloyed W-0.5 wt.% Ti Powder Alloy

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Hadi Jahangiri ◽  
Sultan Sönmez ◽  
M. Lütfi Öveçoğlu
Keyword(s):  
Crystallite Size ◽  
Milling Time ◽  
High Energy ◽  
Lattice Parameter ◽  
Mechanically Alloyed ◽  
High Energy Ball Mill ◽  
Powder Density ◽  
Energy Ball ◽  
Ti Powder ◽  
Milled Powders

The effects of milling atmosphere and mechanical alloying (MA) duration on the effective lattice parameter, crystallite size, lattice strain, and amorphization rate of the W-0.5 wt.% Ti powders were investigated. W-0.5 wt.% Ti powders were mechanically alloyed (MA’d) for 10 h and 20 h in a high energy ball mill. Moreover, morphology of the powders for various MA was analyzed using SEM microscopy. Their powder density was also measured by helium pycnometer. The dry milled agglomerated powders have spherical particle, while wet milled powders have layered morphology. Milling media and increasing of milling time significantly reduce the crystallite size. The smallest crystallite size is 4.93 nm which belonged to the dry milled powders measured by Lorentzian method after 20 hours’ MA. However, after 20 hours, MA’d powders show the biggest crystallite size, as big as 57.07 nm, measured with the same method in ethanol.

Preparation of Nb-40Ti Powders by High-Energy Milling

2005 ◽  
Vol 498-499 ◽  
pp. 146-151
Author(s):  
Y.A. Giffoni ◽  
Erika Coaglia Trindade Ramos ◽  
Ana Sofia Ramos ◽  
Hugo Ricardo Zschommler Sandim ◽  
M.T.T. Pacheco
Keyword(s):  
Solid Solution ◽  
High Energy ◽  
Milling Process ◽  
X Ray Diffraction ◽  
Mechanically Alloyed ◽  
High Energy Milling ◽  
Porous Ti ◽  
Titanium Hydride Powder ◽  
Tih2 Powder ◽  
Ti Powder

Porous Ti-Nb alloys are promising candidates for biomedical applications. In the present study, alloy powders containing 60 wt-% Nb were prepared by high-energy milling of Nb, Ti, and/or TiH2 powders. The high-energy milling process was carried out in a planetary ball mill. The starting and as-milled materials were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM). Elemental (Nb, and Ti) and TiH2 powder mixtures with composition Nb-40wt%Ti were mechanically alloyed for 2 to 30 h. The formation of a BCC Nb(Ti) solid solution by high-energy milling using elemental Ti powder to produce Nb-40Ti was observed after milling for 30 h. A HCP-Ti solid solution was formed after milling for 30 h due to the partial decomposition of titanium hydride powder mixture during high-energy milling.

scholarly journals Consolidation of Mechanically Alloyed Al-10.7 at%Ti Powder at Low Temperature and High Pressure of 2 GPa

1995 ◽  
Vol 36 (3) ◽  
pp. 465-468 ◽  
Author(s):  
Hideki Araki ◽  
Shigeoki Saji ◽  
Tsuyoshi Okabe ◽  
Yoritoshi Minamino ◽  
Toshimi Yamane ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Mechanically Alloyed ◽  
Ti Powder

Magnetic properties of mechanically alloyed Co–Ti powder

2002 ◽  
Vol 320 (1-4) ◽  
pp. 285-287 ◽  
Author(s):  
R Martı́nez-Sánchez ◽  
J.A Matutes-Aquino ◽  
O Ayala-Valenzuela ◽  
S.D De la Torre
Keyword(s):  
Magnetic Properties ◽  
Mechanically Alloyed ◽  
Ti Powder

scholarly journals Near Net Shaping of Mechanically alloyed Fe-48at%Cr Powder by Pulsed Current Sintering Process.

2000 ◽  
Vol 47 (10) ◽  
pp. 1097-1101 ◽  
Author(s):  
Keizo Kobayashi ◽  
Akihiro Matsumoto ◽  
Toshiyuki Nishio ◽  
Kimihiro Ozaki ◽  
Akira Sugiyama
Keyword(s):  
Pulsed Current ◽  
Sintering Process ◽  
Mechanically Alloyed ◽  
Near Net Shaping ◽  
Net Shaping

Effect of Al Content on Structural Changes in Mechanically Alloyed Al-Ti Powder Mixtures

1996 ◽  
Vol 235-238 ◽  
pp. 67-72 ◽  
Author(s):  
Alexandr V. Leonov ◽  
E. Szewczak ◽  
O.E. Gladilina ◽  
Henryk Matyja ◽  
V.I. Fadeeva
Keyword(s):  
Structural Changes ◽  
Mechanically Alloyed ◽  
Powder Mixtures ◽  
Al Content ◽  
Ti Powder

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.

scholarly journals Crystallization of Mechanically Alloyed Co-Ti Powder.

1999 ◽  
Vol 46 (9) ◽  
pp. 942-946 ◽  
Author(s):  
Roberto Martínez Sánchez ◽  
José Gerardo Cabanas Moreno ◽  
David Ríos Jara ◽  
Sebastián Díaz De La Torre
Keyword(s):  
Mechanically Alloyed ◽  
Ti Powder
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