Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1689249 | Vacuum | 2008 | 7 Pages |
Abstract
Low cost mullite-zirconia composites were prepared from the mixtures of natural bauxite and zircon sand by using transferred arc plasma processing. In this paper, a mixture of natural bauxite and zircon in the ratio of 7:3 by weight (based on composition of 3:2 mullite) was ball milled for 4Â h and melted in the transferred arc plasma for 2 and 4Â min. Argon was used as plasma forming gas. The torch was operated at 5Â kW input power. The phase and microstructure formation of melted samples were investigated by XRD and SEM images. The results show that the processing time is a key factor to get a single phase mullite-zirconia composites with required microstructure.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
S. Yugeswaran, V. Selvarajan, P. Dhanasekaran, L. Lusvarghi,