Nanovoids in dense hydroxyapatite ceramics after electric field assisted sintering
Source abstract
Abstract
Nanoporous hydroxyapatite (HA) ceramics were consolidated using conventional or free sintering, spark plasma sintering (SPS) and flash sintering (FS). Microstructures formed during electric field assisted sintering, which includes SPS and FS revealed that nanovoids were retained within HA grains during processing. After free sintering, however, no nanovoids were detected by transmission electron microscopy (TEM). The observed nanovoids were confirmed not induced by electron beam damaging, and showed either a round or faceted shape with diameters ranging between 5 and 10 nm. In-situ TEM heating experiments demonstrated that nanovoids remained stable up to 900°C but disappeared at a temperature as high as 1100°C.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Bone Tissue Engineering Materials · Titanium Alloys Microstructure and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Nano Materials Engineering, Kyungnam University, Changwon, Korea
Department of Materials Science and Engineering, University of California at Davis, Davis, CA, USA
School of Materials Science and Engineering, Yeungnam University, Gyeongsan, Korea
Funding
US Army Research Office · Kyungnam University
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