Influence of Applied Frequency on Thermal Physical Properties of Coatings Prepared on Al and AlSi Alloys by Plasma Electrolytic Oxidation
文献类型：期刊论文
| 作者 | Li GD(李国栋)2,3; Ma, Fei1; Li, Zhijie1; Xu Y(许亿)2,3 ; Gao FY(高方圆)2,3; Guo, Lingyan1; Zhu JW(朱剑威)2,3; Li G(李光)2,3; Xia Y(夏原)2,3; Li G(李光)
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| 刊名 | COATINGS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 11期号:12页码:15 |
| 关键词 | PEO low heat capacity low heat conductivity microstructure |
| DOI | 10.3390/coatings11121439 |
| 通讯作者 | Li, Guang(ghit@imech.ac.cn) ; Xia, Yuan(xia@imech.ac.cn) |
| 英文摘要 | In this study, plasma electrolytic oxidation (PEO) was performed on Al and AlSi substrates using a pulsed direct current (DC) power source. The coating process was carried out in a Na2SiO3 electrolyte with the systematic change of pulse frequency (50-1400 Hz). The surface characteristics of the coatings were examined using scanning electron microscopy (SEM). The phase structure was characterized using X-ray diffraction (XRD). A differential scanning calorimeter (DSC) and a laser flash apparatus (LFA) were employed to test heat capacity and heat conductivity, respectively. Results showed that as the discharge frequency increased, the thermal physical properties of Al-PEO and AlSi-PEO coatings changed in different ways. At a high frequency, Al-PEO coatings had low porosity and were closed-pore structured whereas AlSi-PEO coatings had high porosity and large-size open-pore structures could be observed on their surfaces due to concentrated discharges. Based on these findings, it was found that the thermal productivity of coatings is closely correlated with the open-/closed-pore structure instead of porosity. PEO coatings with low heat capacity or low heat conductivity could be obtained with a controlled frequency. |
| 分类号 | 二类 |
| WOS关键词 | OXIDE COATINGS ; SI ALLOYS ; HEAT-LOSS ; MICROSTRUCTURE ; PEO ; ALUMINUM ; CONDUCTIVITY ; DISCHARGES ; INSULATION ; YSZ |
| 资助项目 | National Nature Science Foundation of China[51871230] ; National Nature Science Foundation of China[51701229] ; China Postdoctoral Science Foundation[2021M693239] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000735603600001 |
| 资助机构 | National Nature Science Foundation of China ; China Postdoctoral Science Foundation |
| 其他责任者 | Li, Guang ; Xia, Yuan |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88224]  |
| 专题 | 宽域飞行工程科学与应用中心 |
| 作者单位 | 1.Weichai Power Co Ltd, Weifang 261061, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li GD,Ma, Fei,Li, Zhijie,et al. Influence of Applied Frequency on Thermal Physical Properties of Coatings Prepared on Al and AlSi Alloys by Plasma Electrolytic Oxidation[J]. COATINGS,2021,11(12):15. |
| APA | 李国栋.,Ma, Fei.,Li, Zhijie.,许亿.,高方圆.,...&Xu Y.(2021).Influence of Applied Frequency on Thermal Physical Properties of Coatings Prepared on Al and AlSi Alloys by Plasma Electrolytic Oxidation.COATINGS,11(12),15. |
| MLA | 李国栋,et al."Influence of Applied Frequency on Thermal Physical Properties of Coatings Prepared on Al and AlSi Alloys by Plasma Electrolytic Oxidation".COATINGS 11.12(2021):15. |
入库方式： OAI收割
来源：力学研究所
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