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Article: Porous Li-Na-K niobate bone-substitute ceramics: Microstructure and piezoelectric properties

TitlePorous Li-Na-K niobate bone-substitute ceramics: Microstructure and piezoelectric properties
Authors
KeywordsBone substitute
Ceramic
Microstructure
Piezoelectric
Pore-forming agent
Porosity
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/matlet
Citation
Materials Letters, 2008, v. 62 n. 20, p. 3506-3508 How to Cite?
AbstractDisc specimens of a porous ceramic, lithium sodium potassium niobate (Li0.06Na0.5K0.44)NbO3, were prepared using ammonium oxalate monohydrate or poly(methyl methacrylate) as pore-forming agent, and made piezoelectric using a modified polarizing method to preserve biocompatibility. Scanning electron microscopy showed a bicontinuous 3-3 structure of interconnected pores 150-250 μm in size. The piezoelectric constant (d33) and electromechanical coupling coefficient (Kp) are discussed as a function of porosity and pore shape: d33 fitted the theoretical expectation for shape factor Ks = 1, while Kp was approximately constant (~ 0.23) for porosity of 15-45 vol.%. 50 vol.% AOM gave the highest porosity (~ 45%) without decline of the value of Kp whilst maintaining mechanical integrity. Such materials show promise for use as a piezoelectric composite bone substitute. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58156
ISSN
2015 Impact Factor: 2.437
2015 SCImago Journal Rankings: 0.807
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Qen_HK
dc.contributor.authorChen, Xen_HK
dc.contributor.authorZhu, Jen_HK
dc.contributor.authorDarvell, BWen_HK
dc.contributor.authorChen, Zen_HK
dc.date.accessioned2010-05-31T03:24:45Z-
dc.date.available2010-05-31T03:24:45Z-
dc.date.issued2008en_HK
dc.identifier.citationMaterials Letters, 2008, v. 62 n. 20, p. 3506-3508en_HK
dc.identifier.issn0167-577Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/58156-
dc.description.abstractDisc specimens of a porous ceramic, lithium sodium potassium niobate (Li0.06Na0.5K0.44)NbO3, were prepared using ammonium oxalate monohydrate or poly(methyl methacrylate) as pore-forming agent, and made piezoelectric using a modified polarizing method to preserve biocompatibility. Scanning electron microscopy showed a bicontinuous 3-3 structure of interconnected pores 150-250 μm in size. The piezoelectric constant (d33) and electromechanical coupling coefficient (Kp) are discussed as a function of porosity and pore shape: d33 fitted the theoretical expectation for shape factor Ks = 1, while Kp was approximately constant (~ 0.23) for porosity of 15-45 vol.%. 50 vol.% AOM gave the highest porosity (~ 45%) without decline of the value of Kp whilst maintaining mechanical integrity. Such materials show promise for use as a piezoelectric composite bone substitute. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/matleten_HK
dc.relation.ispartofMaterials Lettersen_HK
dc.rightsMaterials Letters. Copyright © Elsevier BV.en_HK
dc.subjectBone substituteen_HK
dc.subjectCeramicen_HK
dc.subjectMicrostructureen_HK
dc.subjectPiezoelectricen_HK
dc.subjectPore-forming agenten_HK
dc.subjectPorosityen_HK
dc.titlePorous Li-Na-K niobate bone-substitute ceramics: Microstructure and piezoelectric propertiesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0167-577X&volume=62&spage=3506&epage=3508&date=2008&atitle=Porous+Li-Na-K+niobate+bone-substitute+ceramics:+Microstructure+and+piezoelectric+propertiesen_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.matlet.2008.03.024en_HK
dc.identifier.scopuseid_2-s2.0-44349107753en_HK
dc.identifier.hkuros150461en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-44349107753&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume62en_HK
dc.identifier.issue20en_HK
dc.identifier.spage3506en_HK
dc.identifier.epage3508en_HK
dc.identifier.isiWOS:000257378300011-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWang, Q=7406917575en_HK
dc.identifier.scopusauthoridChen, X=15031376500en_HK
dc.identifier.scopusauthoridZhu, J=8095781900en_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK
dc.identifier.scopusauthoridChen, Z=7409486442en_HK

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