scholarly journals Synthesis of TiB2-Ni3B Nanocomposite Powders by Mechanical Alloying

2018 ◽  
Author(s):  
Jorge Morales Hernández ◽  
Verónica N. Martínez Escobedo ◽  
Héctor Herrera Hernández ◽  
José M. Juárez García ◽  
Joel Moreno Palmerin
Keyword(s):  
Mechanical Alloying ◽  
Nanocomposite Powders

Effect of reinforcement volume fraction on mechanical alloying of Al–SiC nanocomposite powders

2007 ◽  
Vol 50 (3) ◽  
pp. 276-282 ◽  
Author(s):  
S. Kamrani ◽  
A. Simchi ◽  
R. Riedel ◽  
S. M. Seyed Reihani
Keyword(s):  
Mechanical Alloying ◽  
Volume Fraction ◽  
Nanocomposite Powders

The Effect of Reinforcement Phase on the Microstructure of Al-SiC Nanocomposite Powder Prepared via Mechanical Alloying

2009 ◽  
Vol 83-86 ◽  
pp. 764-770
Author(s):  
Taha Rostamzadeh ◽  
H. Shahverdi ◽  
R. Sarraf-Mamoory ◽  
A. Shanaghi
Keyword(s):  
Electron Microscopy ◽  
Mechanical Alloying ◽  
Metal Matrix ◽  
Milling Time ◽  
Lattice Strain ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
High Energy ◽  
Nanocomposite Powder ◽  
Nanocomposite Powders

Mechanical alloying is one of the most successful methods for the manufacturing of metal matrix nanocomposite powders. In this study, Al/SiC metal matrix composite (MMCp) powders with volume fractions of 5, 10, and 15 percent SiC were successfully obtained after milling the powder for a period of 25 hours at a ball to powder ratio of 15:1 using high energy planetary milling. The Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses were conducted to investigate the lattice strain of the matrix phase and the microstructure of the nanocomposite powders after 1, 10, and 25 hours of milling time. Also, the morphology of the Al-5%SiC nanocomposite powder was investigated using transmission electron microscopy (TEM). The results show that with the increase of both milling time and the reinforcement phase volume fraction, the lattice strain increases and the average size of aluminum phase crystallites decreases. Eventually, after 25 hours of milling, the nanocomposite powders show a spherical-like morphology and SiC particles were distributed in an aluminum matrix with appropriate order.

Production of copper–niobium carbide nanocomposite powders via mechanical alloying

2005 ◽  
Vol 399 (1-2) ◽  
pp. 382-386 ◽  
Author(s):  
M.T. Marques ◽  
V. Livramento ◽  
J.B. Correia ◽  
A. Almeida ◽  
R. Vilar
Keyword(s):  
Mechanical Alloying ◽  
Niobium Carbide ◽  
Nanocomposite Powders

Synthesis of novel CuSn 10 ‐graphite nanocomposite powders by mechanical alloying

2014 ◽  
Vol 9 (2) ◽  
pp. 109-112 ◽  
Author(s):  
A. Canakci ◽  
T. Varol ◽  
H. Cuvalci ◽  
F. Erdemir ◽  
S. Ozkaya ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Nanocomposite Powders

scholarly journals Synthesis, Characterization and Mechanical Behaviour of Al2O3, TiO2, and Cu Reinforced Al 7068 Nanocomposites

2020 ◽  
Vol 7 ◽  
Author(s):  
V. Sathiyarasu ◽  
D. Jeyasimman ◽  
L. Chandra Sekaran
Keyword(s):  
Mechanical Alloying ◽  
Gas Flow ◽  
Research Work ◽  
Exothermic Reaction ◽  
Milled Powder ◽  
Hardness Test ◽  
Matrix Composites ◽  
Weight Percentage ◽  
Transmission Electron ◽  
Nanocomposite Powders

This present research work aims at fabrication of AA7068 metal matrix composite reinforced with a different weight percentage of Al2O3, TiO2 and Cu (0 wt.%, 2 wt.%, and 4 wt.%) nanopowders through mechanical alloying of 30 hrs which is produced using powder metallurgy route. The consolidation pressure of 500 MPa was applied for compaction of the composite and sintered at a temperature of 600°C for two hrs in the presence of argon gas flow. An XRD result reveals that there are no intermetallic compounds formed in the milled powder after 30 hr of mechanical alloying. The reinforcement particles were well embedded and uniformly distributed in matrix composites was confirmed by bright-field emission transmission electron microscopy (FETEM) image and selected area diffraction (SAD) ring pattern. From the DSC curve of AA 7068–2.0 wt. % Al2O3, TiO2 and Cu nanocomposite powders after 30 hrs of mechanical alloying., the endothermic peak at 536.85°C corresponds to the melting of aluminium which was followed by a steady-state exothermic reaction at 579.51°C was obtained. The green density and sintered density of prepared nanocomposites were calculated and compared. Brinell hardness test has been conducted and the maximum value of 192 BHN was obtained by adding a weight percentage of 2 wt. % of Al2O3, TiO2 and Cu particles.

Effect of Mechanical Alloying on Structural and Electrical Properties of (P2O5)(x)-(Y2O3)(0.03)-(ZrO2)(0.97) Electrolyte

2021 ◽  
Vol 900 ◽  
pp. 155-162
Author(s):  
Abeer Farouk Abbas Al-Attar
Keyword(s):  
Electrical Properties ◽  
Mechanical Alloying ◽  
Xrd Analysis ◽  
High Energy ◽  
Dc Conductivity ◽  
Average Particle ◽  
Milling Duration ◽  
Two Phases ◽  
A Minor ◽  
Nanocomposite Powders

Pentavalent phosphorous oxide doped yttria-stabilized zirconia (P2O5)X-(Y2O3)0.03-(ZrO2)0.97 with x=0.06 mol.% was achieved via an economical technique using mechanical alloying (MA) technique. Three types of nanocomposite powders of electrolyte were produced by high-energy ball milling with different milling times. The phases of synthesized electrolyte powders and sintered electrolytes were illustrated by X-ray diffraction (XRD). The average particle sizes of powders indicated around (360, 245, and 48) nm at milling duration (1, 10, and 45) hrs, respectively. The XRD analysis results of 1 h MA electrolyte powder obtained tetragonal ZrO2, while the 45 h MA electrolyte manifested a minority phase of monoclinic ZrO2. Then, the XRD of the sintered electrolyte with the optimum electrical properties appeared two phases. The major phase of the tetragonal zirconium yttrium oxide and a minor phase was a monoclinic zirconium oxide. The average grain sizes of the three types of the sintered manufacturing electrolytes were (7.638, 2.642, and 1.245 µm) after the mechanical alloying duration of (1, 10, and 45) hrs, respectively and sintered at 1873 °K. The DC conductivity (σ) studied corresponded to the influence of milling times on the microstructure for each sintered electrolyte. From the results, the synthesized sintered electrolyte with a long MA duration gave a maximum DC (σ) 1.03E-1S.m. And, the DC conductivity (σ) was 1.11E-02 of electrolyte produced with 10 hr mechanical alloying. Otherwise, the lower DC conductivity got with the electrolyte prepared in the lowest milling duration was 8.9 E-2 S.m.

Effect of Process Conditions on the Synthesis of TiB2/TiC Nanocomposite Powders by Mechanical Alloying

2015 ◽  
Vol 44 (12) ◽  
pp. 2987-2991 ◽  
Author(s):  
Wang Haibo ◽  
Wang Dongpo ◽  
Cheng Fangjie ◽  
Li Hui ◽  
Li Zhuoxin
Keyword(s):  
Mechanical Alloying ◽  
Process Conditions ◽  
Nanocomposite Powders
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