The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer | |
Gao FY(高方圆); Hao L(郝丽); Li G(李光); Xia Y(夏原); Li, G (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. | |
会议录名称 | APPLIED SURFACE SCIENCE |
2018 | |
页码 | 13-16 |
会议名称 | 5th Asian International Conference on Heat Treatment and Surface Engineering |
会议日期 | NOV 12-14, 2016 |
会议地点 | Hangzhou, PEOPLES R CHINA |
摘要 | This study focuses on the individual discharge channel of ceramic coating prepared by plasma electrolytic oxidation (PEO), and attempts to reveal the mechanism of breakdown discharge at low voltage. Titanium (Ti) was employed as a substrate with the layer of aluminum deposited on it (aluminized Ti). The shape and microstructure of the discharge channels in PEO coatings were investigated using transmission electron microscope (TEM) and scanning electron microscopy (SEM). A schematic model of the individual discharge channel was proposed based on Ti tracer method. The shape of the discharge channel was mainly cylinder-shaped in the compact coating, with a groove-like oxidation region existed at the coating/substrate interface. In the groove-like oxidation region, the phase composition mainly composed of amorphous and mixed polycrystalline (aluminum titanate and mullite). beta-Al2O3 was found in the ceramic coating. TEM morphology showed that nanometer sized micro channels existed in the ceramic coatings. (C) 2017 Elsevier B.V. All rights reserved. |
关键词 | Alloy Peo Aluminum Plasma Electrolytic Oxidation Discharge Channel Schematic Model Ti Tracer |
WOS记录号 | WOS:000416964200004 |
资助信息 | This work is financially supported by the International Science & Technology Cooperation Program of China (No. 2014DFG51240) and the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB22040503). |
收录类别 | CPCI-S |
语种 | 英语 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/72160 |
专题 | 先进制造工艺力学实验室 |
通讯作者 | Li, G (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. |
作者单位 | 1.[Gao, Fangyuan 2.Hao, Li 3.Li, Guang 4.Xia, Yuan] Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China 5.[Gao, Fangyuan 6.Hao, Li 7.Li, Guang 8.Xia, Yuan] Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Gao FY,Hao L,Li G,et al. The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer[C]APPLIED SURFACE SCIENCE,2018:13-16. |
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