Anti-corrosion film on 2024/SiC aluminum matrix composite fabricated by microarc oxidation in silicate electrolyte
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| Title: | Anti-corrosion film on 2024/SiC aluminum matrix composite fabricated by microarc oxidation in silicate electrolyte |
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| Authors: | Xue, Wenbin xuewb@bnu.edu.cn, Wu, Xiaoling1, Li, Xijin1, Tian, Hua1 |
| Source: | Journal of Alloys & Compounds. Nov2006, Vol. 425 Issue 1/2, p302-306. 5p. |
| Subjects: | Oxidation, Materials analysis, Micromechanics, Iron metallurgy |
| Abstract: | Abstract: A corrosion-resistant ceramic film was prepared on the SiC reinforced aluminum matrix composite by microarc oxidation technique in silicate solution. The film with two layer structure consists of mullite, α-Al2O3, γ-Al2O3 and amorphous SiO2. Analysis of microstructure and composition suggests that only a few SiC particles remain in the film close to the composite/film interface and most of SiC reinforcements have transformed into the oxides under plasma discharge sintering. By microarc oxidation treatment, the corrosion current density of 2024/SiC decreases almost four orders of magnitude. The corrosion resistance of the coated 2024/SiC composite was greatly improved because the SiC reinforcements had not disrupted the continuity of micoarc oxidation film. [Copyright &y& Elsevier] |
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| Database: | Engineering Source |
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