Corrosion resistance and mechanical property of AZ31 magnesium alloy by N/Ti duplex ion implantationChinese Full Text
LIU Hong-xi,MENG Chun-lei,LIN Bo,JIANG Ye-hua,ZHOU Rong-feng(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)
Abstract: Nitrogen and titanium duplex ion implantation was conducted on AZ31 magnesium alloy surface by metal vapor vacuum arc（MEVVA） ion implantor.The phases,atomic concentration-depth distribution,corrosion resistance and microhardness of the modified alloy were investigated by means of auger electron spectroscopy（AES）,scanning electronic microscopy（SEM）,X-ray diffraction（XRD）,electrochemical corrosion and microhardness tests.The results show that the surface layer is composed of Mg,MgO,Ti,TiO2 and TiN phases,and the modification-layer depth is about 180 nm,microhardness of the treated sample increases by 50%,compared with that of the untreated sample.The corrosion potential increases by 600 mV,corrosion current density decreases by 110 μA·cm-2 and polarization resistance increases by 67.9 times in 3.5% saturated NaCl solution for AZ31 magnesium alloy after N/Ti duplex ion implantation.
- DOI：
10.13289/j.issn.1009-6264.2011.08.026
- Series：
- Subject：
- Classification Code：
TG174.44
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