Q345钢预热时间对熔结环氧粉末涂层防护性能的影响I:界面结合性能分析
Effect of Preheating Time on Protective Performance of Fusion Bonded Epoxy Powder Coating on Q345 Steel I: Analysis of Interface Bonding
查看参考文献20篇
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文摘
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通过拉伸实验和湿附着力评级实验,研究了210 ℃下基体的预热时间对熔结环氧粉末涂层/Q345钢界面结合性能的影响.结果表明,预热时间对涂层体系结合性能影响显著,Q345基体在210 ℃下预热6 h其结合性能达到最佳.采用CLSM、AFM和XPS等表面测试技术分别对基体表面形貌、粗糙度和化学成分进行表征,并探讨基体表面状态与涂层体系结合性能的相关性.结果表明,预热处理使得Q345基体表面生成致密氧化膜,氧化膜成分由外到内依次为Fe_2O_3层和Fe_3O_4层.随着预热时间延长,表层Fe_2O_3厚度基本不变,内层Fe_3O_4逐渐增厚,基体表面粗糙度改变;基体表面粗糙度的改变影响涂层体系结合性能. |
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其他语种文摘
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The effect of substrate preheating time on the interface bonding of fusion bonded epoxy powder coating/Q345 substrate was investigated by means of tensile test and wet adhesion test. Results showed that the preheating time presents significant effect on the interface bonding of coating/Q345 substrate, and among others, the best bonding performance could be acquired for the substrate being preheated for 6 h at 210 ℃. The surface morphology, roughness and chemical composition of the substrate were characterized by CLSM, AFM, XPS, and the correlation between the surface state of the substrate and the bonding performance of coating/substrate was inquired into. Results revealed that the preheating treatment resulted in the formation of a dense oxide scale on the surface of Q345 substrate, which composed of an outer layer Fe_2O_3 and an inner layer Fe_3O_4. With the prolonging preheating time, the thickness of Fe_2O_3 layer was almost the same and the inner layer Fe_3O_4 became thicker, whilst the surface roughness of the substrate changed gradually. The change of the surface roughness of the substrate affected the bonding performance of the coating/substrate system. |
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来源
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中国腐蚀与防护学报
,2018,38(2):124-132 【核心库】
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DOI
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10.11902/1005.4537.2017.046
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关键词
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熔结环氧粉末涂层
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预热时间
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结合性能
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基体表面状态
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地址
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1.
中国科学院金属研究所, 沈阳, 110016
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中国科学院大学, 北京, 100049
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语种
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中文 |
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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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1005-4537 |
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学科
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金属学与金属工艺 |
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基金
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中国科学院A类战略性先导科技专项
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文献收藏号
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CSCD:6251536
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