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Article: Modulus and hardness evaluations of sintered bioceramic powders and functionally graded bioactive composites by nano-indentation technique

TitleModulus and hardness evaluations of sintered bioceramic powders and functionally graded bioactive composites by nano-indentation technique
Authors
KeywordsBerkovich indenter
Continuous stiffness measurement
Hardness
Hydroxyapatite
Modulus
Nano-indentation
Issue Date2002
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea
Citation
Materials Science And Engineering A, 2002, v. 338 n. 1-2, p. 230-236 How to Cite?
AbstractNano-indentation experiments on various sintered bioceramic powders and bioceramic functionally graded coatings, were performed with a berkovich indenter to establish an improved method for determining hardness and elastic modulus from load and displacement data. The materials included, spherical hydroxyapatite, SHA (Taihei chemicals, Japan), hydroxyapatite powders of different batches namely, P81B, P88 and P120 (Plasma Biotal, UK), in-house hydroxyapatite, HA and alpha tri-calcium phosphate, αTCP (Merck, Germany), functionally graded coatings (FGC's) of HA-G-Ti and HA-αTCP-Ti. The elastic modulus and hardness values of all the materials were obtained by nano-indentation with the corresponding load-displacement curves confirming the characteristic properties of the sintered materials and functionally graded coatings. The results showed that the SHA powder yielded the highest modulus and hardness value and P88 (HA) showed the least value confirming that its relatively softer than other bioactive powders. Furthermore, the continous stiffness measurement also showed that SHA yielded the best mechanical property. In case of the FGC's HA-G-Ti yielded higher values of modulus and hardness in comparison with HA- αTCP-Ti. © 2002 Elsevier Science B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/85446
ISSN
2015 Impact Factor: 2.647
2015 SCImago Journal Rankings: 1.803
References

 

DC FieldValueLanguage
dc.contributor.authorRoop Kumar, Ren_HK
dc.contributor.authorWang, Men_HK
dc.date.accessioned2010-09-06T09:04:53Z-
dc.date.available2010-09-06T09:04:53Z-
dc.date.issued2002en_HK
dc.identifier.citationMaterials Science And Engineering A, 2002, v. 338 n. 1-2, p. 230-236en_HK
dc.identifier.issn0921-5093en_HK
dc.identifier.urihttp://hdl.handle.net/10722/85446-
dc.description.abstractNano-indentation experiments on various sintered bioceramic powders and bioceramic functionally graded coatings, were performed with a berkovich indenter to establish an improved method for determining hardness and elastic modulus from load and displacement data. The materials included, spherical hydroxyapatite, SHA (Taihei chemicals, Japan), hydroxyapatite powders of different batches namely, P81B, P88 and P120 (Plasma Biotal, UK), in-house hydroxyapatite, HA and alpha tri-calcium phosphate, αTCP (Merck, Germany), functionally graded coatings (FGC's) of HA-G-Ti and HA-αTCP-Ti. The elastic modulus and hardness values of all the materials were obtained by nano-indentation with the corresponding load-displacement curves confirming the characteristic properties of the sintered materials and functionally graded coatings. The results showed that the SHA powder yielded the highest modulus and hardness value and P88 (HA) showed the least value confirming that its relatively softer than other bioactive powders. Furthermore, the continous stiffness measurement also showed that SHA yielded the best mechanical property. In case of the FGC's HA-G-Ti yielded higher values of modulus and hardness in comparison with HA- αTCP-Ti. © 2002 Elsevier Science B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/mseaen_HK
dc.relation.ispartofMaterials Science and Engineering Aen_HK
dc.subjectBerkovich indenteren_HK
dc.subjectContinuous stiffness measurementen_HK
dc.subjectHardnessen_HK
dc.subjectHydroxyapatiteen_HK
dc.subjectModulusen_HK
dc.subjectNano-indentationen_HK
dc.titleModulus and hardness evaluations of sintered bioceramic powders and functionally graded bioactive composites by nano-indentation techniqueen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0921-5093&volume=338&spage=230&epage=236&date=2002&atitle=Modulus+and+hardness+evaluations+of+sintered+bioceramic+powders+and+functionally+graded+bioactive+composites+by+nano-indentation+techniqueen_HK
dc.identifier.emailWang, M:memwang@hku.hken_HK
dc.identifier.authorityWang, M=rp00185en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0921-5093(02)00080-1en_HK
dc.identifier.scopuseid_2-s2.0-0037114526en_HK
dc.identifier.hkuros110859en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037114526&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume338en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage230en_HK
dc.identifier.epage236en_HK
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridRoop Kumar, R=6602435898en_HK
dc.identifier.scopusauthoridWang, M=15749714100en_HK

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