Textured Ti3SiC2 by EPD in a Strong Magnetic Field

Authors :: Mishra, Mrinalini
Sakka, Yoshio
Hu, Chun Feng
Suzuki, Tohru S.
Uchikoshi, Tetsuo
Besra, Laxmidhar
Source :: Key Engineering Materials; March 2012, Vol. 507 Issue: 1 p15-19, 5p
Publication Year :: 2012
Abstract: We present a method for fabrication of textured MAX phase ceramics, particularly, Ti<subscript>3</subscript>SiC<subscript>2</subscript>; by EPD in a strong magnetic field (12T). Ti<subscript>3</subscript>SiC<subscript>2</subscript> was dispersed in cationic polyelectrolyte-Polyethylenimine (PEI). Addition of 0.3-1dwb PEI resulted in high zeta potential values and suspension was found to be stable and of good fluidity. The optimized suspension parameters for EPD were determined as 10vol% Ti<subscript>3</subscript>SiC<subscript>2</subscript> and 1dwb PEI in 50 % ethanolic water at pH ~ 7. X-ray diffraction analysis of the textured samples revealed that the preferred orientation of Ti<subscript>3</subscript>SiC<subscript>2</subscript> grains parallel to the magnetic eld direction was along the a,b-axis. The Lotgering orientation factors on the textured top surface and textured side surface were determined as f <subscript>(hk0)</subscript> = 0.35 and f <subscript>(00l)</subscript> = 0.75, respectively.