Results 161 to 170 of about 965 (205)

Aluminothermic SHS reactions: effect of scaling

International Journal of Self-Propagating High-Temperature Synthesis, 2011
The influence of scale effects-sample diameter, sample length, and sample mass—on combustion of CrO3-Cr2O3-C-Al, CrO3-Cr2O3-B2O3-Al, and NiO-Cr2O3-Nb2O5-WO3-MoO3-C-Al green mixtures was explored. Suggested was a qualitative model based on the behavior of the melt within and behind of the combustion front.
S. L. Silyakov, V. N. Sanin, V. I. Yukhvid   +2 more
openaire   +1 more source

Mechanism of zinc oxide–aluminum aluminothermic reaction

Journal of Materials Science, 2010
In this study, the aluminothermic reaction of a mixture of aluminum and zinc oxide powders ball milled at ambient temperature was investigated employing X-ray diffraction (XRD), differential thermal analysis (DTA), and electron microscopy (SEM) techniques.
Ali Maleki, Masoud Panjepour, Behzad Niroumand, Mahmood Meratian   +3 more
openaire   +1 more source

Reaction mechanism and kinetics of ferrotitanium preparation by aluminothermic reduction of CaTiO3

Materials Today Communications, 2022
Abstract A ferrotitanium alloy production process by aluminothermic reduction and using perovskite as materials was studied in laboratory. The thermodynamics of the Al-CaO, Al-CaO-CaTiO3, Al-CaO-Fe-CaTiO3 system was calculated and the reduction process of CaTiO3 to prepare ferrotitanium was investigated. The Freeman-Carroll method was used to analyze
Yang Jinzhong, Wang Yaowu, Peng Jianping, Di Yuezhong   +3 more
openaire   +1 more source

Mechanochemical synthesis of Al2O3/Co nanocomposite by aluminothermic reaction

Advanced Powder Technology, 2012
Abstract In this work, Al 2 O 3 /Co nanocomposite was successfully prepared by mechanochemical reaction between Co 3 O 4 and Al powders in a planetary high energy ball mill. The mechanism of the reaction was dealt using X-ray diffraction (XRD), differential thermal analysis (DTA), and thermodynamics calculations.
S.N. Hosseini, F. Karimzadeh, M.H. Enayati   +2 more
openaire   +1 more source

Titanium carbide by the SHS process ignited with aluminothermic reaction

International Journal of Self-Propagating High-Temperature Synthesis, 2008
We explored the ignition of Ti + C → TiC reaction with another highly exothermic thermite reaction, Fe2O3 + 2Al → 2Fe + Al2O3, used as a match. In order to decrease the combustion temperature and thus to avoid explosion mode, we studied the effect of alumina diluent on the thermite reaction.
A. Benaldjia, O. Guellati, W. Bounour, M. Guerioune, M. Ali-Rachedi, A. Amara, A. Drici, D. Vrel   +7 more
openaire   +1 more source

Determination of heats of aluminothermic redox reaction of V2O5 and MnO2

Journal of Thermal Analysis and Calorimetry, 1995
Differential thermal analysis has been used for quantitative determination of heats of aluminothermic redox reaction of MnO2 and V2O5 over a wide range of temperatures. Heat of reaction V2O5−Al and MnO2−Al systems have been determined using the calibration plot established.
B. Sarangi, H. S. Ray, K. K. Tripathy, A. Sarangi   +3 more
openaire   +1 more source

Microstructure refining of aluminum alloys using aluminothermic reaction with ZnO nanoparticles

Materials Letters, 2015
Abstract The wide popularities of grain refiner and modifier in aluminum alloy industry enable us to achieve improved properties and performances. Here, using aluminothermic reaction between nano-oxide particles (ZnO, ~20 nm in size) and aluminum alloy (A356), the microstructure refining effect on aluminum alloy is investigated.
J.H. Shin, J.H. Jeon, D.H. Bae
openaire   +1 more source

Use of the Aluminothermic Reaction in the Treatment of Steel Industry By-Products

Journal of Materials Synthesis and Processing, 2000
This is a study of the possibility of using the aluminothermic reaction for the treatment of the steel industry by-products consisting of ferric oxides and contamination. The experimenal method consists of mixing of the powder materials followed by initiation of the aluminothermic reaction.
Ruuskanen, Pekka, Mäki, J., Pöyliö, E., Lähteenmäki, S., Kallio, Marke   +5 more
openaire   +3 more sources

Investigation on mechanochemical synthesis of Al2O3/BN nanocomposite by aluminothermic reaction

Ceramics International, 2014
Abstract Alpha-alumina–boron nitride (α-Al 2 O 3 –BN) nanocomposite was synthesized using mixtures of aluminum nitride, boron oxide and pure aluminum as raw materials via mechanochemical process under a low pressure of nitrogen gas (0.5 MPa). The phase transformation and structural evaluation during mechanochemical process were investigated by X-ray ...
Amir Javad Nikkhah, Omid Torabi, Reza Ebrahimi-Kahrizsangi, Sanaz Naghibi, Amin Jamshidi   +4 more
openaire   +1 more source

Preparation of Ti-Al-V Alloys by Aluminothermic Reaction

2016
Reduction reaction can happen among Al, V2O5 and TiO2 powders. Al can deoxidize metal V and Ti from the metal oxides. The electric igniter can be used to trigger the reduction. The reaction between Al and V2O5 is very intense and release large amounts of heat, but the heat which is needed to initiate the reaction between Al and TiO2 is not enough ...
Zhijiang Gao, Huimin Lu
openaire   +1 more source