title: A new and economic approach to synthesize and fabricate bioactive diopside ceramics using a modified domestic microwave oven. Part 2: effect of P2O5 additions on diopside bioactivity and mechanical properties.
abstract: In this work, diopside based ceramics was obtained by solid state reaction using conventional sintering (CS) and microwave sintering (MS). Moreover, different amounts of P2O5 (0.5-5.0 wt.%) have been added. It has been found that a relative density up to 95% theoretical was obtained for diopside containing 2.0 and 5.0 wt.% P2O5, sintered at 1250 °C for 2h and at 1075 °C only for 15 min using CS and MS. Excellent values of micro hardness (7.4 ± 0.1 GPa) and 3 point flexural strength (about 270 MPa) for samples containing 5 wt.% P2O5, sintered at 1075 °C for 15 min using MS were measured. Besides this, a relatively low weight loss ratio has been measured (0.01%) for diopside samples containing 5 wt.% P2O5, sintered under the same conditions, after soaking in physiological salt solution for 2 days. Additionally, the bioactivity of diopside by the possibility of formation of apatite on the surface of pure diopside and diopside containing 2 wt.% of P2O5 immersed in simulated body fluid (SBF) was also confirmed. Finally, particular nano-sized of Carbonated hydroxyapatite (CHA) crystals (rice shaped) were formed and covered the surface of these samples, soaked in SBF solution for 14 days.
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Souheila
authors.initials: S
authors.lastname: Zouai
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria. Electronic address: harabi52@gmail.com.
authors.forename: Abdelhamid
authors.initials: A
authors.lastname: Harabi
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Noureddine
authors.initials: N
authors.lastname: Karboua
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Esma
authors.initials: E
authors.lastname: Harabi
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Sihem
authors.initials: S
authors.lastname: Chehlatt
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Salah-Edine
authors.initials: SE
authors.lastname: Barama
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Soumia
authors.initials: S
authors.lastname: Zaiou
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Ferhat
authors.initials: F
authors.lastname: Bouzerara
authors.affiliation: Ceramics Lab., Physics department, Mentouri University of Constantine, Constantine 25000, Algeria.
authors.forename: Fatiha
authors.initials: F
authors.lastname: Guerfa
mesh_terms: D002516:Ceramics / Q000138:chemical synthesis / Q000737:chemistry; D017886:Durapatite / Q000138:chemical synthesis / Q000737:chemistry; D006358:Hot Temperature; D008872:Microwaves; D017553:Phosphorus Compounds / Q000737:chemistry*; D012824:Silicic Acid / Q000138:chemical synthesis / Q000737:chemistry
chemical_list: D017553:Phosphorus Compounds; D012824:Silicic Acid; C074224:diopside; C012500:phosphorus pentoxide; D017886:Durapatite
keywords: Diopside; Flame photometer analyzer; Microwave sintering; Simulated body fluid, mechanical properties