期刊
RARE METALS
卷 40, 期 4, 页码 968-974出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-020-01410-8
关键词
Aluminum alloy; Anodic oxidation film; Nickel-free sealing; Fluorozirconate
资金
- National New Material Testing and Evaluation Platform Main Center Project [TC170A5SU-1]
Different additives were added to potassium fluorozirconate solution to prepare nickel-free sealing reagents for sealing anodic oxidation film of aluminum alloy at room temperature. The study showed that fluorozirconate has good sealing effects and wide prospects for sealing aluminum alloy samples. Its products were highly corrosion resistant and filled in the openings of micropores in the oxide film.
Different additives were added into the potassium fluorozirconate solution to prepare different nickel-free sealing reagents, with which the anodic oxidation film of aluminum alloy was sealed at room temperature. The phosphor chromic acid weight loss method was used to evaluate the sealing effects. Using electron scanning microscopy (SEM), the surface and cross-sectional micro-morphologies of the anodic oxidation films sealed by different fluorozirconate sealants were observed. The position and state of zirconium element distribution in the film hole were investigated by the further quantitative and distribution analysis of Zr element. This study provides an experimental evidence for the theoretical studies of fluorozirconate-sealed anodic oxidation films. It is shown that the fluorozirconate has good sealing effects and has a wide prospect for sealing the aluminum alloy samples. Its products were highly corrosion resistant, and were filled in the openings of the micropores in the oxide film.
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