| CHEN Ning,ZHAO Qing,ZHANG Zhi-you.Effect of the Alternate Pulse Parameter on the Micro-arc Oxidation Coatings on TC4 Titanium Alloy[J],36(3):43-45,66 |
| Effect of the Alternate Pulse Parameter on the Micro-arc Oxidation Coatings on TC4 Titanium Alloy |
| Received:February 07, 2007 Revised:June 10, 2007 |
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| DOI： |
| KeyWord:Micro-arc oxidation Titanium alloy Duty cycle Frequency Oxide ceramic coating |
| Author | Institution |
| CHEN Ning |
Nanchang Institute of Aeronautical Technology, Nanchang , China |
| ZHAO Qing |
Nanchang Institute of Aeronautical Technology, Nanchang , China |
| ZHANG Zhi-you |
Nanchang Institute of Aeronautical Technology, Nanchang , China |
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| Abstract: |
| In order to reveal the effect of altemate pulse duty cycle and frequency on micro-arc oxidation coatings, ceramic coatings were formed using alternate pulse micro-arc oxidation method on alloy Ti6A14V and a constant current regime of micro-arc oxidation was applied. SEM and XRD were employed to analyze surface morphology and the phase of the coatings. The results show that with the increasing of duty cycle, the growth rates of the MAO coatings increase and the relative contents of rutile Ti02 increase. With the increasing of frequency, the growth rates of the MAO coatings decrease and the roughness of the coating surface decreases gradually. The relative content of rutile and anatase Ti02 keeps invariable with the variation of the frequency. |
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