| YAN Feng-ying,SHI Yu-long,MO Wei-yan.Influence of Oxidation Time on Micro-arc Oxidation Coating on Titanium Substrate[J],39(4):42-44 |
| Influence of Oxidation Time on Micro-arc Oxidation Coating on Titanium Substrate |
| Received:December 24, 2009 Revised:August 10, 2010 |
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| DOI： |
| KeyWord:micro-arc oxidation oxidation time titanium |
| Author | Institution |
| YAN Feng-ying |
School of Materials Science and Technology,Qingdao University of Science and Technology, Qingdao , China |
| SHI Yu-long |
School of Materials Science and Technology,Qingdao University of Science and Technology, Qingdao , China |
| MO Wei-yan |
School of Materials Science and Technology,Qingdao University of Science and Technology, Qingdao , China |
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| Abstract: |
| A micro-arc oxidation mode of invariable current density was used to form ceramic coating of hydroxyapatite-containing TiO2on titanium substrate. The influence of oxidation time on the micro-morphology, thickness and phase structure of coating as well as resistant humor corrosion was investigated. The results reveals that the morphologies of porous and rough coatings change with the protracting of oxidation time. The thickness of the coating increases along with oxidation time,butit will become thinnerif the oxidation time is too long. The coating is composed of rutile and anatase when the oxidation time is shorter while it is composed of HA mainly when the oxidation time is longer.The passivation performance of the coating formed for longer time is better than that formed for shorter time.When the oxidation time excesses 20 min, it's effect on the passivation performance of the coating is no longer evidence. |
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