title: In vitro evaluation of some types of ferrimagnetic glass ceramics.
abstract: The present study aimed at studying the acceleration of the bioactive layer on the surface of ferrimagnetic glass ceramic with a basic composition 40Fe2O3-15P2O5-20SiO2-5TiO2 through the addition of 20% of different types of metal oxides like MgO or CaO or MnO or CuO or ZnO or CeO2. SEM, EDAX, and ICP were applied to present the results of the study. SEM and EDAX measurements indicated the presence of apatite layer formed on the surface of the prepared glass ceramics after immersion in SBF within 7 to 30 days. The investigation of the results clarified that the addition of CaO or ZnO accelerated the formation of apatite on the surfaces of the samples in the simulated body fluid faster than other metal oxides. Inductive coupled plasma (ICP) analysis shows the evolution of ion extraction by the simulated body fluid solution (SBF) with time in relation to the elemental composition.
authors.affiliation: Glass Research Department, National Research Center, Dokki, Cairo 12311, Egypt.
authors.forename: S A M
authors.initials: SA
authors.lastname: Abdel-Hameed
authors.affiliation: Glass Research Department, National Research Center, Dokki, Cairo 12311, Egypt.
authors.forename: M A
authors.initials: MA
authors.lastname: Marzouk
authors.affiliation: Glass Research Department, National Research Center, Dokki, Cairo 12311, Egypt.
authors.forename: R L
authors.initials: RL
authors.lastname: Elwan