Formation and characterization of wear-resistant PEO coatings formed on β-titanium alloy at different electrolyte temperatures
Formation and characterization of wear-resistant PEO coatings formed on β-titanium alloy at different electrolyte temperatures
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DOI：
10.1016/j.apsusc.2012.07.104
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发表时间：
2012-10-15
影响因子：
6.7
通讯作者：
Nakayama, T.
中科院分区：
文献类型：
--
作者：
Habazaki, H.;Tsunekawa, S.;Nakayama, T.
在278~313K的不同电解液温度下，在碱性铝酸盐电解液中对单一β相Ti-15质量%V-3质量%Al-3质量%Cr-3质量%锡(以下简称Ti-15-3)合金进行了等离子电解氧化。结果表明，在278K的最低温度下形成的涂层具有较低的孔隙率和较高的α-Al_2O_3相含量，并含有较高的Al2TiO5主相。相反，在较高的温度下形成不均匀的涂层，其孔隙率相对较高。因此，当涂层在278K下形成时，Ti-15-3的耐磨性最好。通过基于涂层过程中的直接视频成像数据，讨论了电解液温度对涂层形貌和成分的影响。(C)2012爱思唯尔B.V.保留所有权利。
Plasma electrolytic oxidation of single beta-phase Ti-15 mass% V-3 mass% Al-3 mass% Cr-3 mass% Sn (hereafter denoted as Ti-15-3) alloy has been conducted in alkaline aluminate electrolyte at different electrolyte temperatures between 278 and 313 K. The results obtained disclose the highly improved wear resistance of the coatings formed at the lowest temperature of 278 K. The coating formed at this temperature has lower porosity and contains higher concentration of alpha-Al2O3 phase in addition to the Al2TiO5 major phase. In contrast, non-uniform coatings are formed at higher temperatures and their porosity is relatively high. Thus, the highest wear resistance of the Ti-15-3 is obtained when the coating is formed at 278 K. Such influence of the electrolyte temperature on the coating morphology and composition is discussed by direct imaging based on direct video imaging data during the coating process. (C) 2012 Elsevier B. V. All rights reserved.