• Dr.Mathew.C.T

MgAl2O4 is a promising infrared transparent ceramics used as infrared window in strategic defence and space missions. The present work reports the effect of different sintering mechanisms on the thermal properties of MgAl2O4. A modified combustion technique was used to synthesize nanostructured MgAl2O4. The average crystallite size estimated using Scherrer formula was ~20 nm. A novel resistive coupled microwave sintering technique which couples the resistive heating and microwave heating was effectively employed to sinter infrared transparent MgAl2O4 to 99.3% of the theoretical density. To study the influence of sintering mechanisms on the thermal properties of the sample two other variants of sintering strategies namely resistive sintering and susceptor assisted microwave sintering were also employed. The thermal conductivity, thermal diffusivity and the specific heat capacity of the sintered pellets were analyzed in detail.

Combustion synthesis, Resistive coupled microwave sintering, thermal conductivity, thermal diffusivity, infrared transparent window.

"EFFECT OF SINTERING MECHANISM ON THE THERMAL PROPERTIES OF MgAl2O4", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.675-680, July-2018, Available :http://www.jetir.org/papers/JETIR1807699.pdf

"EFFECT OF SINTERING MECHANISM ON THE THERMAL PROPERTIES OF MgAl2O4", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp675-680, July-2018, Available at : http://www.jetir.org/papers/JETIR1807699.pdf