scholarly journals Synthesis and characterization of zinc ferrite nanoparticles obtained by self-propagating low-temperature combustion method

2011 ◽  
Vol 34 (7) ◽  
pp. 1325-1330 ◽  
Author(s):  
P. M. Prithviraj Swamy ◽  
S. Basavaraja ◽  
Arunkumar Lagashetty ◽  
N. V. Srinivas Rao ◽  
R. Nijagunappa ◽  
...  
Keyword(s):  
Low Temperature ◽  
Zinc Ferrite ◽  
Combustion Method ◽  
Ferrite Nanoparticles ◽  
Synthesis And Characterization ◽  
Low Temperature Combustion ◽  
Temperature Combustion

Synthesis and Characterization of Nano-Sized AlN Powders by CRN Route from a Sol-Gel Low Temperature Combustion Precursor

2012 ◽  
Vol 557-559 ◽  
pp. 644-648 ◽  
Author(s):  
Qing Hua Yang ◽  
Huan Ping Wang ◽  
Wen Juan Zhang ◽  
Shi Feng Wang ◽  
Shi Qing Xu
Keyword(s):  
Low Temperature ◽  
Carbothermal Reduction ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Low Temperature Combustion ◽  
Preparation Process ◽  
Small Particle Size ◽  
Temperature Combustion ◽  
Amorphous Alumina

Nano-sized aluminum nitride (AlN) powders were synthesized through a carbothermal reduction nitridation (CRN) route from a sol-gel low temperature combustion precursor. The precursor was precalcined at 600-1200 °C and then nitrided at 1400-1550 °C for different holding time to obtain AlN powders. During the whole preparation process, the amorphous alumina in the precursors first transformed to γ-Al2O3, then to α-Al2O3, and AlN was obtained through the nitridation of α-Al2O3with the reduction of carbon. The results show that the appropriate precalcination benefits the activity of precursors and promotes the formation of AlN phase due to the transition of amorphous alumina to γ-Al2O3, and the optimum precalcination temperature is 1000 °C. The effects of different nitridation parameters on the microstructure of AlN powders were also investigated. By being nitrided at 1500-1550 °C for 2 h, the AlN powders present a good distribution and small particle size of 30-90 nm from the precursor precalcinated at 1000 °C.

scholarly journals Barium ferrite nanoparticles prepared by self-propagating low-temperature combustion method and its characterization

2011 ◽  
Vol 34 (7) ◽  
pp. 1319-1323 ◽  
Author(s):  
P. M. Prithviraj Swamy ◽  
S. Basavaraja ◽  
Vijayanand Havanoor ◽  
N. V. Srinivas Rao ◽  
R. Nijagunappa ◽  
...  
Keyword(s):  
Low Temperature ◽  
Barium Ferrite ◽  
Combustion Method ◽  
Ferrite Nanoparticles ◽  
Low Temperature Combustion ◽  
Temperature Combustion
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