Fabrication and evaluation of bulk nanostructured cobalt intended for dental and orthopedic implants

Ren, Fuzeng; Zhu, Weiwei; Chu, Kangjie

2017-04

10.1016/j.jmbbm.2017.01.039

Journal of the Mechanical Behavior of Biomedical Materials   影响因子和分区

1751-6161

1878-0180

Bulk nanostructured cobalt (Co) was fabricated by a combination of high energy ball milling and warm pressing. The obtained cobalt has an average grain size of 35 nm with measured hardness and elastic modulus of 7.32 GPa and 211.4 GPa, respectively. Dry sliding wear testing shows such bulk nanostructured Co has high sliding wear resistance. However, electrochemical study shows that such Co has a relatively high corrosion rate and no passive behavior in the artificial saliva solution. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis further reveal that the corrosion product is composed of insoluble cobalt (II) phosphate and cobalt hydroxide. The evaluation results suggest that bulk nanostructured cobalt can be a promising wear resistant material but may not be suitable for dental/orthopedic implants.

Nanostructured cobalt Wear Corrosion XPS

SCI ; EI

英语

第一 ; 通讯

Special Funds for Fundamental Research of Strategic Emerging Industries of Shenzhen, China[JCYJ20150331101823688]

Engineering ; Materials Science

Engineering, Biomedical ; Materials Science, Biomaterials

WOS:000400229100012

ELSEVIER SCIENCE BV

20170503312262

Ball milling ; Corrosion ; Corrosion rate ; Dental prostheses ; Fabrication ; Wear of materials ; Wear resistance ; X ray diffraction ; X ray photoelectron spectroscopy

Dental Equipment and Supplies:462.3 ; Chemical Operations:802.3 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Ren, Fuzeng,Zhu, Weiwei,Chu, Kangjie. Fabrication and evaluation of bulk nanostructured cobalt intended for dental and orthopedic implants[J]. Journal of the Mechanical Behavior of Biomedical Materials,2017,68:115-123.

Ren, Fuzeng,Zhu, Weiwei,&Chu, Kangjie.(2017).Fabrication and evaluation of bulk nanostructured cobalt intended for dental and orthopedic implants.Journal of the Mechanical Behavior of Biomedical Materials,68,115-123.

Ren, Fuzeng,et al."Fabrication and evaluation of bulk nanostructured cobalt intended for dental and orthopedic implants".Journal of the Mechanical Behavior of Biomedical Materials 68(2017):115-123.