Morphological and compositional changes on sand dollar biomaterials induced by heat treatments

作者：Rodriguez Lugo V; Camacho Bragado GA; Castano VM

来源：Materials and Manufacturing Processes, 2003, 18(1): 67-78.

DOI：10.1081/AMP-120017589

• biomaterials
• natural materials
• thermal processing
• scanning electron microscopy
• infrared analysis
• X-ray powder diffraction
• ceramics
• bioceramics
• marine organisms
• calcium phosphates
• hydroxyapatite
• morphology
• microstructure

The microstructural characterization of Mellita Eduardobarrosoi sp. Nov, a marine skeleton, subjected to thermal treatments of 400degrees, 600degrees, 800degrees, and 900degreesC is presented. The results show that this species has pores with diameters ranging between 10 and 20 mum and is constituted mainly of O, Ca, C, and Mg as (Ca, Mg)CO(3). This particular compound transforms into CaO when heated higher than 800degreesC. This change is observed in FTIR spectra as the disappearance of two absorption bands at 875 cm(-1) and 879 cm(-1) which correspond to loss Of CO(2).

• 出版日期2003-1