A high strength,wear and corrosion-resistant,antibacterial and biocompatible Nb-5 at.％ Ag alloy for dental and orthopedic implants

2021

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY   Impact Factor & Quartile

1005-0302

Refractory metal niobium (Nb) incorporated with a small amount of silver (Ag),the resulting Nb-Ag two-phase alloys,were fabricated by mechanical alloying and spark plasma sintering.The microstructure,mechanical properties,wear resistance,corrosion behavior,in vitro and in vivo antibacterial properties and biocompatibility of the Nb-Ag alloys were systematically investigated.The results show that the mechanical properties,wear resistance,corrosion resistance and antibacterial ability were significantly enhanced after addition of 5 at.％ Ag.The fabricated Nb-5 at.％ Ag alloy demonstrates high yield strength of up to ～ 1486 MPa and fracture strain of ～ 35 ％.The precipitated Ag particles could reduce friction and wear.The enhanced corrosion resistance was attributed to the higher relative density of the sintered alloys and the formation of a stable and dense passive film of niobium and silver oxides.In vitro and in vivo evaluations show that the Nb-5 at.％ Ag alloy also has strong antibacterial activity and good biocompati-bility and osteointegration ability.These results demonstrate great potential of the nanostructured Nb-Ag alloys for dental and orthopedic implants.

English

Others

MATERIALS SCIENCE

WanFang

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1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,China
2.Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education,School of Mechanical Engineering,Tianjin University,Tianjin,300354,China
3.Center for Advanced Regenerative Engineering,Department of Biomedical Engineering,Northwestern University,Evanston,IL,60208,USA

. A high strength,wear and corrosion-resistant,antibacterial and biocompatible Nb-5 at.％ Ag alloy for dental and orthopedic implants[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,80(21):266-278.

(2021).A high strength,wear and corrosion-resistant,antibacterial and biocompatible Nb-5 at.％ Ag alloy for dental and orthopedic implants.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,80(21),266-278.

"A high strength,wear and corrosion-resistant,antibacterial and biocompatible Nb-5 at.％ Ag alloy for dental and orthopedic implants".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 80.21(2021):266-278.