Transactions of the INDIAN CERAMIC SOCIETY Vol. 73 2014
Lanthanum Phosphate Containing Machinable Alumina
Ceramics for Bio-Medical Applications
Abhishek Badolia, Ritwik Sarkar* and S. K. Pal
pages : 115-120
DOI : 10.1080/0371750X.2014.922425
Abstract
Alumina-lanthanum phosphate composites were prepared using two commercial grade aluminas and synthetically
prepared lanthanum phosphate. Composites were prepared by varying lanthanum phosphate content between 10
and 50 wt%. Mixed composites were pressed and sintered between 1400o and 1600oC. Sintered products were
characterized for various properties including microstructure, machinability and bioactivity. Phase analysis confirmed
separate existence of Al2O3 and LaPO4 phase’s different sintering temperatures. Sintering temperatures and lanthanum
phosphate content were found to be important for the incorporation of machinability property in alumina. Bioactivity
study indicated growth of apatite on immersing the samples in simulated body fluid for 7 days.
