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 Streptoc...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.展开更多
基金Project(50501016) supported by the National Natural Science Foundation of Chinaproject(2007AAO3Z521) supported by the National High-tech Research and Development program+1 种基金Projects (20051049, 2006021023) supported by the Natural Science Foundation of Shanxi Province, ChinaProject(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
文摘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.
