THE EFFECT OF SILICON OXIDE ADDITIVE ON THE PROPERTIES OF HYDROXYAPATITE-1 WT. % MAGNESIUM OXIDE BINARY COMPOSITE

Pazarlıoğlu S. S., Algan O., Gökçe H.

CERAMICS - SILIKATY, cilt.67, sa.4, ss.427-445, 2023 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67 Sayı: 4
  • Basım Tarihi: 2023
  • Doi Numarası: 10.13168/cs.2023.0043
  • Dergi Adı: CERAMICS - SILIKATY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.427-445
  • Marmara Üniversitesi Adresli: Evet

Özet

A hydroxyapatite-1 wt. % magnesium oxide (HA-1M) composite with and without a silicon oxide (SiO2) additive at amounts of 0.25, 0.5, and 1.0 wt. % was sintered between 1100 and 1300 °C to investigate the effect of the SiO2 additive on the sintering behaviour, mechanical properties and in vitro bioactivity of HA-1M. The HA-1M composite consists of HA, whitlockite and farringtonite. In the SiO2 added samples, the phases of akermanite, clinopyroxene, merwinite, melilite and diopside were detected. These phases contributed to achieving better mechanical properties in the SiO2 added samples than that of the HA-1M composite. The highest fracture toughness (1.47 ± 0.04 MPa∙m1/2) and compression strength (183 ± 25.09 MPa) were achieved by sintering the HA-1M composite at 1200 °C. In the SiO2 added samples, the highest compression strength and fracture toughness were calculated as 201.53 ± 18.01 MPa and 1.78 ± 0.22 MPa∙m1/2, respectively, which belongs to the HA-1M-0.5SiO2 composite. With the addition of SiO2 at an amount of 0.5 wt. %, the ratio of the apatite layer formed on the surface of the HA-1M composite increased.