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- PMID: 17295249
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Article: Surface characteristics, biocompatibility, and mechanical properties of nickel-titanium plasma-implanted with nitrogen at different implantation voltages
Title | Surface characteristics, biocompatibility, and mechanical properties of nickel-titanium plasma-implanted with nitrogen at different implantation voltages |
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Authors | |
Keywords | Biocompatibility NiTi Plasma immersion ion implantation Surface roughness Voltage |
Issue Date | 2007 |
Publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-9304/ |
Citation | Journal Of Biomedical Materials Research - Part A, 2007, v. 82 n. 2, p. 469-478 How to Cite? |
Abstract | NiTi shape memory alloy is one of the promising orthopedic materials due to the unique shape memory effect and superelasticity. However, the large amount of Ni in the alloy may cause allergic reactions and toxic effects thereby limiting its applications. In this work, the surface of NiTi alloy was modified by nitrogen plasma immersion ion implantation (N-PIII) at various voltages. The materials were characterized by X-ray photoelectron spectroscopy (XPS). The topography and roughness before and after N-PIII were measured by atomic force microscope. The effects of the modified surfaces on nickel release and cytotoxicity were assessed by immersion tests and cell cultures. The XPS results reveal that near-surface Ni concentration is significantly reduced by PIII and the surface TiN layer suppresses nickel release and favors osteoblast proliferation, especially for samples implanted at higher voltages. The surfaces produced at higher voltages of 30 and 40 kV show better adhesion ability to osteoblasts compared to the unimplanted and 20 kV PIII samples. The effects of heating during PIII on the phase transformation behavior and cyclic deformation response of the materials were investigated by differential scanning calorimetry and three-point bending tests. Our results show that N-PIII conducted using the proper conditions improves the biocompatibility and mechanical properties of the NiTi alloy significantly. © 2007 Wiley Periodicals, Inc. |
Persistent Identifier | http://hdl.handle.net/10722/79617 |
ISSN | 2023 Impact Factor: 3.9 2023 SCImago Journal Rankings: 0.807 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Liu, XM | en_HK |
dc.contributor.author | Wu, SL | en_HK |
dc.contributor.author | Chan, YL | en_HK |
dc.contributor.author | Chu, PK | en_HK |
dc.contributor.author | Chung, CY | en_HK |
dc.contributor.author | Chu, CL | en_HK |
dc.contributor.author | Yeung, KWK | en_HK |
dc.contributor.author | Lu, WW | en_HK |
dc.contributor.author | Cheung, KMC | en_HK |
dc.contributor.author | Luk, KDK | en_HK |
dc.date.accessioned | 2010-09-06T07:56:40Z | - |
dc.date.available | 2010-09-06T07:56:40Z | - |
dc.date.issued | 2007 | en_HK |
dc.identifier.citation | Journal Of Biomedical Materials Research - Part A, 2007, v. 82 n. 2, p. 469-478 | en_HK |
dc.identifier.issn | 1549-3296 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/79617 | - |
dc.description.abstract | NiTi shape memory alloy is one of the promising orthopedic materials due to the unique shape memory effect and superelasticity. However, the large amount of Ni in the alloy may cause allergic reactions and toxic effects thereby limiting its applications. In this work, the surface of NiTi alloy was modified by nitrogen plasma immersion ion implantation (N-PIII) at various voltages. The materials were characterized by X-ray photoelectron spectroscopy (XPS). The topography and roughness before and after N-PIII were measured by atomic force microscope. The effects of the modified surfaces on nickel release and cytotoxicity were assessed by immersion tests and cell cultures. The XPS results reveal that near-surface Ni concentration is significantly reduced by PIII and the surface TiN layer suppresses nickel release and favors osteoblast proliferation, especially for samples implanted at higher voltages. The surfaces produced at higher voltages of 30 and 40 kV show better adhesion ability to osteoblasts compared to the unimplanted and 20 kV PIII samples. The effects of heating during PIII on the phase transformation behavior and cyclic deformation response of the materials were investigated by differential scanning calorimetry and three-point bending tests. Our results show that N-PIII conducted using the proper conditions improves the biocompatibility and mechanical properties of the NiTi alloy significantly. © 2007 Wiley Periodicals, Inc. | en_HK |
dc.language | eng | en_HK |
dc.publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-9304/ | en_HK |
dc.relation.ispartof | Journal of Biomedical Materials Research - Part A | en_HK |
dc.rights | Journal of Biomedical Materials Research Part A. Copyright © John Wiley & Sons, Inc. | en_HK |
dc.subject | Biocompatibility | en_HK |
dc.subject | NiTi | en_HK |
dc.subject | Plasma immersion ion implantation | en_HK |
dc.subject | Surface roughness | en_HK |
dc.subject | Voltage | en_HK |
dc.title | Surface characteristics, biocompatibility, and mechanical properties of nickel-titanium plasma-implanted with nitrogen at different implantation voltages | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1549-3296&volume=82A&spage=469&epage=478&date=2007&atitle=Surface+characteristics,+biocompatibility+and+mechanical+properties+of+nickel-titanium+plasma-implanted+with+nitrogen+at+different+implantation+voltages | en_HK |
dc.identifier.email | Yeung, KWK:wkkyeung@hkucc.hku.hk | en_HK |
dc.identifier.email | Lu, WW:wwlu@hku.hk | en_HK |
dc.identifier.email | Cheung, KMC:cheungmc@hku.hk | en_HK |
dc.identifier.email | Luk, KDK:hcm21000@hku.hk | en_HK |
dc.identifier.authority | Yeung, KWK=rp00309 | en_HK |
dc.identifier.authority | Lu, WW=rp00411 | en_HK |
dc.identifier.authority | Cheung, KMC=rp00387 | en_HK |
dc.identifier.authority | Luk, KDK=rp00333 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/jbm.a.31157 | en_HK |
dc.identifier.pmid | 17295249 | - |
dc.identifier.scopus | eid_2-s2.0-34447325630 | en_HK |
dc.identifier.hkuros | 145193 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-34447325630&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 82 | en_HK |
dc.identifier.issue | 2 | en_HK |
dc.identifier.spage | 469 | en_HK |
dc.identifier.epage | 478 | en_HK |
dc.identifier.isi | WOS:000247836600023 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Liu, XM=8408205200 | en_HK |
dc.identifier.scopusauthorid | Wu, SL=15125218800 | en_HK |
dc.identifier.scopusauthorid | Chan, YL=8250546500 | en_HK |
dc.identifier.scopusauthorid | Chu, PK=36040705700 | en_HK |
dc.identifier.scopusauthorid | Chung, CY=8100842800 | en_HK |
dc.identifier.scopusauthorid | Chu, CL=7404345713 | en_HK |
dc.identifier.scopusauthorid | Yeung, KWK=13309584700 | en_HK |
dc.identifier.scopusauthorid | Lu, WW=7404215221 | en_HK |
dc.identifier.scopusauthorid | Cheung, KMC=7402406754 | en_HK |
dc.identifier.scopusauthorid | Luk, KDK=7201921573 | en_HK |
dc.identifier.issnl | 1549-3296 | - |