Sintering effect on mechanical properties of composites of bovine hydroxyapatite (BHA) and Li2O


OKTAR F. N. , Demirer M., GÜNDÜZ O. , GENÇ Y. E. , Agathopoulos S., Peker I. , ...More

Key Engineering Materials, vol.309-311 I, pp.49-52, 2006 (Refereed Journals of Other Institutions) identifier

  • Publication Type: Article / Abstract
  • Volume: 309-311 I
  • Publication Date: 2006
  • Doi Number: 10.4028/0-87849-992-x.49
  • Title of Journal : Key Engineering Materials
  • Page Numbers: pp.49-52
  • Keywords: Bovine Derived Hydroxyapatite, Lithium Oxide, Mechanical Properties, Sintering

Abstract

In this study, hydroxyapatite (HA) material, obtained from calcinated bovine bone (BHA), was mixed with 0.25, 0.50, 1.00, and 2.00 wt% Li 2CO3. The pressed pellets were sintered at various sintering temperatures between 900°C and 1300°C. Measurements of compression strength, microhardness, and density, along with SEM observation and X-ray diffraction analysis were performed. The experimental results showed that the samples with 0.25 and 0.50% Li2CO3. reached a maximum of densification and the highest values of compression strength and microhardness were achieved after sintering at 1300°C. The wetting effect of a Li2O-associated glassy phase was observed even from 900°C.