Y.P.Lu1
,
2) R.F.Zhu1)
,
T.Q.Lei2)
,
Q.S.Ma3)and M.S.Li1) 1) College of Materials Science and Engineering
,
Shandong University of Technology
,
Jinan 250061
,
China2) Harbin Institute of Technology
,
Harbin 150001
,
China 3) Qingrui Oralimplant Center
,
Shandong Provincial Hospital
,
Jinan 250021
,
China
金属学报(英文版)
Theelectron densitiesonsomeplaneofinvolved cellsin αTitanium and Ti Al , Ti 6 Al 4 V and Au Pd Ptalloys werecalculated through EET. Theresultsshow thatthereexist planes withsimilarelectron density amongα Ti,Ti Al,Ti Vand Au Pd Pt unitcells, which veri fiedtosomeextentthe validity ofthe application of EETand atomic boundary condition inTFDtheoryin biomaterials.
关键词:
biomaterial
,
null
,
null
ZHANG Xiang-yu
,
HUANG Xiao-bo
,
JIANG Li
,
MA Yong
,
FAN Ai-lan
,
TANG Bin
钢铁研究学报(英文版)
Abstract： Stainless steel (SS) is not recommended to be used in hospital environments for work surfaces and door furniture due to the lack of antibacterial properties. To this end, a novel SS surface modified layer with both a quick bacterial killing rate and relatively thick has been obtained by plasma surface alloying with Cu. The microstructure, elements distribution and phase identification were analyzed by SEM, GDS, XRD and XPS. A spread plate method was adopted for evaluation of antibacterial property of specimens against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The experimental results demonstrate that the surface modified layer with the thickness of about 26 μm is uniform and dense. The layer is mainly composed of a mixture of pure Cu, expanded austenite phase and a few Fe3O4 phase. The Cu modified layer exhibits excellent antibacterial effects against E. coli and S. aureus within 1 h. No viable E. coli and S. aureus was found after 3 h (100% killed). The modified layer is relatively thick, hence it is expected that the Cu modified SS will have a durable antibacterial function.
关键词:
Key words: plasma alloying
,
Cu
,
antimicrobial
,
AISI 304 stainless steel
