Impurity Tracing in Nanostructured Al and Al/Al2O3 Composite Prepared by High Energy Milling

2010 ◽  
Vol 19 (4) ◽  
pp. 393-402 ◽  
Author(s):  
S. S.Razavi Tousi ◽  
R.Yazdani Rad ◽  
M. S. Abdi
Keyword(s):  
High Energy ◽  
High Energy Milling ◽  
Al2o3 Composite

scholarly journals Fabrication of Ti3AlC2/Al2O3 nanocomposite by a novel method

2011 ◽  
Vol 43 (3) ◽  
pp. 289-294 ◽  
Author(s):  
J. Zhu ◽  
L. Ye ◽  
F. Wang
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Hot Pressing ◽  
Reaction Path ◽  
Raw Materials ◽  
High Energy ◽  
Good Combination ◽  
High Energy Milling ◽  
Al2o3 Composite ◽  
Novel Method

A Ti3AlC2/Al2O3 nanocomposite was synthesized using Ti, Al, C and TiO2 as raw materials by a novel combination of high-energy milling and hot pressing. The reaction path of the 3Ti-8C-16Al-9TiO2 mixture of powders was investigated, and the results show that the transitional phases TiC, TixAly and Al2O3 are formed in high-energy milling first, and then TixAly is transformed to the TiAl phase during the hot pressing. Finally, a reaction between TiC and TiAl occurs to produce Ti3AlC2 and the nanosized Ti3AlC2/Al2O3 composite is synthesized. The Ti3AlC2/Al2O3 composite possessed a good combination of mechanical properties with a hardness of 6.0 GPa, a flexural strength of 600 MPa, and a fracture toughness (K1C) of 5.8 MPa?m1/2. The strengthening and toughening mechanisms were also discussed.

scholarly journals Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling

2009 ◽  
Vol 74 (5) ◽  
pp. 595-605 ◽  
Author(s):  
Viseslava Rajkovic ◽  
Dusan Bozic ◽  
Milan Jovanovic
Keyword(s):  
Particle Size ◽  
Internal Oxidation ◽  
Lattice Distortion ◽  
Copper Matrix ◽  
High Energy ◽  
Lattice Parameter ◽  
Constant Amount ◽  
High Energy Milling ◽  
Al2o3 Composite ◽  
Powder Particles

The powder Cu-Al2O3 composites were produced by high-energy milling. Various combinations of particle size and mixtures and approximately constant amount of Al2O3 were used as the starting materials. These powders were separately milled in air for up to 20 h in a planetary ball mill. The copper matrix was reinforced by internal oxidation and mechanical alloying. During the milling, internal oxidation of pre-alloyed Cu-2 mass %-Al powder generated 3.7 mass % Al2O3 nano-sized particles finely dispersed in the copper matrix. The effect of different size of the starting copper and Al2O3 powder particles on the lattice parameter, lattice distortion and grain size, as well as on the size, morphology and microstructure of the Cu-Al2O3 composite powder particles was studied.

Production of Al–20 wt.% Al2O3 composite powder using high energy milling

2009 ◽  
Vol 192 (3) ◽  
pp. 346-351 ◽  
Author(s):  
S.S. Razavi Tousi ◽  
R. Yazdani Rad ◽  
E. Salahi ◽  
I. Mobasherpour ◽  
M. Razavi
Keyword(s):  
Composite Powder ◽  
High Energy ◽  
High Energy Milling ◽  
Al2o3 Composite

Impact of the SiC addition on the morphological, structural and mechanical properties of Cu-SiC composite powders prepared by high energy milling

2021 ◽  
Author(s):  
Nailton T. Câmara ◽  
Rafael A. Raimundo ◽  
Cleber S. Lourenço ◽  
Luís M.F. Morais ◽  
David D.S. Silva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Energy ◽  
Composite Powders ◽  
High Energy Milling

Effect of High-Energy Milling and Sintering Temperature on the Properties of Al2O3-WC-Co Composites

2021 ◽  
Author(s):  
Heytor V. S. B. Azevêdo ◽  
Rafael A. Raimundo ◽  
David D. S. Silva ◽  
Luís M. F. Morais ◽  
Franciné A. Costa ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
High Energy ◽  
High Energy Milling

Fabrication of (Y2O3)n–ZnO nanocomposites by high-energy milling as potential photocatalysts

2021 ◽  
Author(s):  
A. Modwi ◽  
M. A. Ben Aissa ◽  
Kamal K. Taha ◽  
L. Khezami ◽  
J. El Ghoul ◽  
...  
Keyword(s):  
High Energy ◽  
High Energy Milling

Composite Ta–Cu powders prepared by high energy milling

2008 ◽  
Vol 26 (6) ◽  
pp. 499-503 ◽  
Author(s):  
F.A. Costa ◽  
A.G.P. Silva ◽  
J.F. Silva Júnior ◽  
U.U. Gomes
Keyword(s):  
High Energy ◽  
High Energy Milling

scholarly journals Sliding friction and wear performance of the nano-bioceramic α-Al2O3 prepared by high energy milling

2015 ◽  
Vol 91 ◽  
pp. 151-159 ◽  
Author(s):  
Mamoun Fellah ◽  
Mohammed Abdul Samad ◽  
Mohamed Labaiz ◽  
Omar Assala ◽  
Alain Iost
Keyword(s):  
Friction And Wear ◽  
Sliding Friction ◽  
High Energy ◽  
Wear Performance ◽  
High Energy Milling ◽  
Α Al2o3

Fresh State Behaviour of Cement Paste Containing Nano Kaolin

2014 ◽  
Vol 925 ◽  
pp. 28-32 ◽  
Author(s):  
Muhd Sidek Muhd Norhasri ◽  
M.S. Hamidah ◽  
A. Mohd Fadzil ◽  
A.G. Abd Halim ◽  
M.R. Zaidi
Keyword(s):  
Surface Area ◽  
Cement Paste ◽  
Setting Time ◽  
High Energy ◽  
Major Effect ◽  
Cement Replacement ◽  
High Energy Milling ◽  
Replacement Method ◽  
Fresh State ◽  
State Behaviour

The application of nanomaterials in cement by replacement method in concrete is becoming a trend in cement research. The utilisation of nanosilica, nanoalumina, titanium oxide and others are proven to enhance properties of concrete. The major effect of nanomaterials is its size in which it contributes to the packing theory due to increase in the surface area. nanokaolin which comes from kaolin, was tansformed to the nanoform by using high energy milling. The process of developing nanokaolin by using high energy milling is referred to process top to bottom approach in nanoprocessing technique. In this research, the nanokaolin will be used as an additive in cement by 7% weight of cement. Four (4) cement replacement materials catered by using metakaolin on weight basis from 0, 10%, 20% and 30% will also be adopted. To determine the fresh state, cement paste contains nanokaolin and metakaolin are tested its standard consistency and setting time. The effect of the inclusion of the nanokaolin as additive in cement paste that also contains metakaolin as cement replacement material will be investigated. It was found the inclusion of 7% nanokaolin increases the water demand of the cement paste level of metakaolin replacement. In addition to that, the setting time namely initial and final set was been delayed as compared to that of plain OPC. The nanoparticles of nanokaolin and also finer particles of metakaolin increase the surface area and refining the internal structure of cement paste which reduce the flow capabilities of cement paste containing nanokaolin and metakaolin.

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