Mechanical, tribological and anti-corrosive properties of polyaniline/graphene coated Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn alloys
查看参考文献69篇
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文摘
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The mechanical, tribological and corrosion protection offered to Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn alloys by the epoxy coating containing polyaniline/graphene (PANI/Gr) pigments is undertaken in the current work. PANI/Gr containing coatings were observed to be strongly adherent with a higher scratch hardness (H_s) and plowing hardness (H_p), i.e. H_s of 0.43 GPa, and H_p of 0.61 GPa, respectively when compared to that of neat epoxy coating (H_s of 0.17 GPa, and H_p of 0.40 GPa, respectively). Due to their higher H_s and H_p values, PANI/Gr based coatings displayed an enhanced wear resistance (Wear volume, W_v = 4.53×10~(-3)m~3) than that of neat epoxy coating (W_v = 5.15×10~(-3)m~3). The corrosion protection efficiency in corrosive environment of 3.5 wt% NaCl solution was obtained to be >99% for PANI/Gr containing coatings when compared to that of neat epoxy coating. The charge-transfer resistance (Rct) of the PANI/Gr containing coatings were estimated to be >106 Ω cm~2, which indicates their highly protective nature when compared to that of neat epoxy coating (Rct ~105 Ω cm~2). Hence, PANI/Gr containing coatings can be potentially used for wear resistance and corrosion protection applications in marine environments. |
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来源
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Journal of Materials Science & Technology
,2019,35(8):1767-1778 【核心库】
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DOI
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10.1016/j.jmst.2019.03.028
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关键词
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Mg-Li alloys
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Scratch hardness
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Plowing hardness
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Wear resistance
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Corrosion protection efficiency
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Charge transfer resistance
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地址
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1.
Materials Science and Engineering, Indian Institute of Technology Kanpur, India, Kanpur, 208016
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Centre for Material Science & Engineering, National Institute of Technology Hamirpur, India, Hamirpur, 177005
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China-Canada Institute for Advanced Surface & Interface Science and Engineering, Jiangsu University of Technology, Changzhou, 213001
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1005-0302 |
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学科
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金属学与金属工艺;化学工业 |
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文献收藏号
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CSCD:6568347
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