摘要
Molybdenum nitride(Mo-N) modified layer on Ti6Al4V alloy was obtained by the plasma surface alloying technique. The bacteria adherence property of the Mo-N modified layer on Ti6Al4V alloy on the oral bacteria Streptococcus Mutans was investigated and compared with that of Ti6Al4V alloy by fluorescence microscopy. The mechanism of the bacteria adherence was discussed. The sample was characterized by X-ray diffractometry(XRD),X-ray photoelectron spectroscopy(XPS) and rough-meter. The results show that the Mo-N modified layer is composed of phase Mo2N(fcc) and Mo2N(tetr). There are Mo 3d,N 1s,C 1s and O 1s in the Mo-N modified layer Ti 2p,O 1s,C 1s,in the Ti6Al4V alloy. The surface roughness(Ra) of Ti6Al4V alloy and the Mo-N modified layer is(0.06±0.01) μm and(0.16±0.01) μm,respectively. The Mo-N modified layer inhibits the bacteria adherence. Mo and N on surface of modified layer play a vital role in inhibiting the bacteria adherence.
Molybdenum nitride （Mo-N） modified layer on Ti6A14V alloy was obtained by the plasma surface alloying technique. The bacteria adherence property of the Mo-N modified layer on Ti6A14V alloy on the oral bacteria Streptococcus Mutans was investigated and compared with that of Ti6Al4V alloy by fluorescence microscopy. The mechanism of the bactcria adhercnce was discussed. The sample was characterized by X-ray diffractometry （XRD）, X-ray photoelectron spectroscopy （XPS） and rough-meter. The results show that the Mo-N modified layer is composed of phase Mo2N （fcc） and Mo2N （tetr）. There are Mo 3d, N 1s, C ls and O 1 s in the Mo-N modified layer Ti 2p, O 1 s, C 1 s, in the Ti6A14V alloy. The surface roughness （Ra） of Ti6A14V alloy and the Mo-N modified layer is （0.06 ±0.01） μm and （0.16±0.01） μm, respectively. The Mo-N modified layer inhibits the bacteria adhcrence. Mo and N on surface of modified layer play a vital role in inhibiting the bacteria adherence.
出处
《中国有色金属学会会刊：英文版》
CSCD
2007年第A02期889-891,共3页
Transactions of Nonferrous Metals Society of China
基金
Project(50501016) supported by the National Natural Science Foundation of China
project(2007AAO3Z521) supported by the National High-tech Research and Development program
Projects (20051049, 2006021023) supported by the Natural Science Foundation of Shanxi Province, China
Project(2006-27) supported by the Foundation for Young Subjects Leaders in University of Shanxi and Scientific Foundation for Returned Overseas Scholars of Shanxi Province, China
