Dislocations in plastically deformed apatite

Dislocations were introduced at room temperature by a Vickers indentation into a biological ceramic, apatite. Two types of apatite, a single crystal of fluorapatite and a sintered polycrystal of hydroxyapatite, were studied. Specimens prepared using a focused-ion-beam technique were examined by tran...

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Veröffentlicht in:	Journal of materials science 2008-05, Vol.43 (9), p.3234-3239
Hauptverfasser:	Saka, H, Goto, D, Moon, W.-J
Format:	Artikel
Sprache:	eng
Schlagworte:	ambient temperature Apatite Applied sciences Biological and medical sciences Building materials. Ceramics. Glasses Ceramic industries Ceramics Characterization and Evaluation of Materials Chemical industry and chemicals Chemistry and Materials Science Classical Mechanics Condensed matter: structure, mechanical and thermal properties Criteria Crystallography and Scattering Methods Crystals Defects and impurities in crystals microstructure Deformation Diamond pyramid hardness tests Dislocations electron microscopy Exact sciences and technology Fluorapatite Hydroxyapatite Ion beams Linear defects: dislocations, disclinations Materials Science Mathematical analysis Medical sciences Miscellaneous Physics Polycrystals Polymer Sciences Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) Single crystals Slip Solid Mechanics Structure of solids and liquids crystallography Technical ceramics Technology. Biomaterials. Equipments. Material. Instrumentation Transmission electron microscopy
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Zusammenfassung:	Dislocations were introduced at room temperature by a Vickers indentation into a biological ceramic, apatite. Two types of apatite, a single crystal of fluorapatite and a sintered polycrystal of hydroxyapatite, were studied. Specimens prepared using a focused-ion-beam technique were examined by transmission electron microscopy. Natures of dislocations were determined by the conventional g · b criterion, where the weak-beam method was also applied. The slip system in fluorapatite apatite was determined to be [Formula: see text]
ISSN:	0022-2461 1573-4803
DOI:	10.1007/s10853-008-2551-z