• MANISH MALLICK

Articles written in Bulletin of Materials Science

• Formation and densification of mullite through solid-oxide reaction technique using commercial-grade raw materials

Two different commercially available sources of alumina and silica were used to study the formation and densificationbehaviour of mullite prepared by solid-oxide reaction technique in a single firing. Phase analysis and densificationstudies were carried out on the samples sintered between 1200 and 1600$^{\circ}$C. Effect of addition of 1–6 wt% MgO on thesintered mullite ceramics was also studied.MgO was found to improve the density values for all the compositions till 4 wt%and with higher addition it deteriorated, mainly due to higher extent of liquid phase formation. Mullite formation was foundto start below 1200$^{\circ}$C and constituent oxides were found even at 1600$^{\circ}$C; however, addition of 4 wt% MgO was found to complete the mullite formation at 1600$^{\circ}$C for all the compositions. Microstructural studies showed grain growth in the compositions containing MgO and higher impurities due to formation of greater extent of liquid phase.

• # Bulletin of Materials Science

Volume 43, 2020
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019