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Preparation Of Copper And Chromium Alloyed Layers On Pure Titanium By Plasma Surface Alloying Technology

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  • XIAOJING HE

    (Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze Street, Taiyuan, Shanxi 030024, P. R. China)

  • MENG LI

    (Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze Street, Taiyuan, Shanxi 030024, P. R. China)

  • HUIZHEN WANG

    (Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze Street, Taiyuan, Shanxi 030024, P. R. China)

  • XIANGYU ZHANG

    (Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze Street, Taiyuan, Shanxi 030024, P. R. China)

  • BIN TANG

    (Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze Street, Taiyuan, Shanxi 030024, P. R. China)

Abstract

Cu–Cralloyed layers with differentCuandCrcontents on pure titanium were obtained by means of plasma surface alloying technology. The microstructure, chemical composition and phase composition ofCu–Cralloyed layers were analyzed by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD), respectively. The experimental results demonstrate that the alloyed layers are bonded strongly to pure titanium substrate and consist of unboundTi,CuTi,Cu3Ti,CuTi3andCr2Ti. The thickness ofCu5Cr5andCu7Cr3alloyed layer are about 18 μm and 28 μm, respectively. The antibacterial properties against gram-negativeEscherichia coli(E.coli, ATCC10536) and gram-positiveStaphylococcus aureus(S. aureus, ATCC6538) of untreated pure titanium andCu–Cralloyed specimen were investigated by live/dead fluorescence staining method. The study shows thatCu–Cralloyed layers exhibit excellent antibacterial activities against bothE.coliandS.aureuswithin 24 h, which may be attributed to the formation ofCu-containing phases.

Suggested Citation

  • Xiaojing He & Meng Li & Huizhen Wang & Xiangyu Zhang & Bin Tang, 2015. "Preparation Of Copper And Chromium Alloyed Layers On Pure Titanium By Plasma Surface Alloying Technology," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 22(04), pages 1-7.
    • Handle: RePEc:wsi:srlxxx:v:22:y:2015:i:04:n:s0218625x15500560
    DOI: 10.1142/S0218625X15500560
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