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| Study of surface treatment on the AZ31B magnesium alloys by silane agent |
| Chao Yun Wu |
| 重庆工学院材料科学与工程学院 |
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Abstract The protective film was prepared by immersion magnesium alloy AZ31B in silane solution. The surface morphologies of specimen were analyzed by using SEM、Optical Microscope. The bond adherence between silane film and substrate was researched by FTIR. The corrosion resistance of film was analyzed by salt water immersion and potentiodynamic polarization test. The results show that a very thin and transparent film that was smooth and compact was prepared on the AZ31B magnesium alloys by immersion in silane solution. The silane film has effected polarization voltage of AZ31B magnesium alloys slightly, however the polarization current decreased to 1.024 mA/cm2 for the specimen compared with the bare magnesium alloys (4.489mA/cm2). So the corrosion resistance of magnesium alloys was greatly improved by silane treatment.
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Received: 17 January 2007
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Corresponding Authors:
Chao Yun Wu
E-mail: wchy1201@hotmail.com
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