IMECH-IR  > 先进制造工艺力学重点实验室
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.
Source PublicationAPPLIED SURFACE SCIENCE
2018
Pages13-16
Conference Name5th Asian International Conference on Heat Treatment and Surface Engineering
Conference DateNOV 12-14, 2016
Conference PlaceHangzhou, PEOPLES R CHINA
Abstract

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.

KeywordAlloy Peo Aluminum Plasma Electrolytic Oxidation Discharge Channel Schematic Model Ti Tracer
WOS IDWOS:000416964200004
Funding OrganizationThis 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).
Indexed ByCPCI-S
Language英语
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72160
Collection先进制造工艺力学重点实验室
Corresponding AuthorLi, G (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Affiliation1.[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
Recommended Citation
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]. AMSTERDAM:ELSEVIER SCIENCE BV,2018:13-16.
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