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Critical role of pretreatment on the corrosion resistance of Zr conversion coating on 6061 aluminum alloy: The combined effect of surface topography and potential difference between different phases
Zhou, Peng; Liu, Yang; Liu, Lianhe; Yu, Baoxing; Zhang, Tao; Wang, Fuhui
2019-11-15
Source PublicationSURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
Volume377
AbstractIn this work, different pretreatment condition on AA6061 was investigated by altering the alkaline cleaning time in NaOH, the concentration and composition of acidic pickling solution, respectively. The corrosion resistance of ZrCC was evaluated, and the surface property of the pretreated surface was measured by SKPFM. Results demonstrate that a longer alkaline cleaning time is detrimental to the corrosion resistance of ZrCC since it will decrease the Volta potential difference (Delta E); the acidic pickling in HNO3 improves the corrosion resistance of ZrCC, but an increased concentration will not remarkably further improve the quality of ZrCC, due to the accompanying of increased Delta E; the addition of HF will lead to the overactivation of alloy surface since it will decrease Delta E and increase Delta H. An ideal pretreated surface shown exhibit a combination of mediate Delta H and high Delta E.
KeywordAluminum alloy Conversion coating Pretreatment Corrosion resistance Volta potential
Indexed BySCI
Language英语
WOS IDWOS:000488417800051
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80626
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhou, Peng,Liu, Yang,Liu, Lianhe,et al. Critical role of pretreatment on the corrosion resistance of Zr conversion coating on 6061 aluminum alloy: The combined effect of surface topography and potential difference between different phases[J]. SURFACE & COATINGS TECHNOLOGY,2019,377.
APA Zhou, Peng,Liu, Yang,Liu, Lianhe,Yu, Baoxing,Zhang, Tao,&Wang, Fuhui.(2019).Critical role of pretreatment on the corrosion resistance of Zr conversion coating on 6061 aluminum alloy: The combined effect of surface topography and potential difference between different phases.SURFACE & COATINGS TECHNOLOGY,377.
MLA Zhou, Peng,et al."Critical role of pretreatment on the corrosion resistance of Zr conversion coating on 6061 aluminum alloy: The combined effect of surface topography and potential difference between different phases".SURFACE & COATINGS TECHNOLOGY 377(2019).
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