Seminar Paper

Paper Information

video

sound

Persian Version

View:

924

Download:

Cites:

Information Seminar Paper

Title

A COMPARATIVE STUDY ON THE DIRECT AND PULSED VOLTAGE ELECTRODEPOSITION OF CNTS REINFORCEDHYDROXYAPATITE COATING ON AZ31 MAGNESIUM ALLOY

Pages

 Start Page | End Page

Abstract

 TO CONTROL THE DEGRADATION OF MAGNESIUM ALLOYS, UNIFORM CNTS REINFORCED HA COATING WAS APPLIED ON AZ31 MAGNESIUM ALLOY USING DIRECT AND PULSED VOLTAGE ELECTRODEPOSITION METHOD. 1 WT% CNTS WERE INCORPORATED INTO THE APATITE COATING BY ADDING FUCTIONALIZED CNTS WITH COOH GROUP INTO THE ELECTROLYTE. THE AS-DEPOSITED SPECIMEN WAS THEN POST-TREATED WITH HOT ALKALI SOLUTION TO IMPROVE THE CORROSION RESISTANCE FOR IMPLANT APPLICATIONS. X-RAY DIFFRACTION (XRD), FIELD EMISSION SCANNING ELECTRON MICROSCOPY (FESEM) EQUIPPED WITH ENERGY DISPERSIVE X-RAY ANALYSIS (EDX) WAS USED TO CHARACTERIZE THE MICROSTRUCTURE, MORPHOLOGY, AND PHASE COMPOSITION OF THE COATINGS. FURTHERMORE, THE CORROSION RESISTANCE OF THE COATINGS WAS EVALUATED BY ELECTROCHEMICAL TECHNIQUES IN HANKS SOLUTION. POTENTIODYNAMIC POLARIZATION INDICATED THAT CNTS/HA COMPOSITE COATINGS EXHIBITED HIGHER CORROSION RESISTANCE IN COMPARISON WITH PURE HA COATINGS. ALSO, THE RESULTS INDICATED THAT THE DEGRADATION OF AZ31 MAGNESIUM ALLOY SUBSTRATE WAS DECREASED MORE AFTER SURFACE WAS MODIFIED BY PULSED VOLTAGE ELECTRODEPOSITION IN COMPARISON WITH DIRECT VOLTAGE ELECTRODEPOSITION. ELECTROCHEMICAL TESTS SHOWS THAT THE ECORROF MG SUBSTRATE SIGNIFICANTLY INCREASED FROM -1.64 TO -1.35 FOR DIRECT HA+1% CNTS AND -1.3 FOR PULSED HA+1%CNTS COMPOSITE COATINGS.

Cites

  • No record.
  • References

  • No record.
  • Related Journal Papers

  • No record.
  • Related Seminar Papers

  • No record.
  • Related Plans

  • No record.
  • Recommended Workshops