Thermally Stimulated Evolution of the Surface of Ni- and Cu-Containing Plasma-Electrolytic Oxide Coatings on Titanium

被引：0
作者：
Rudnev, V. S. [1 ,2 ]
Lukiyanchuk, I., V [1 ]
Vasilyeva, M. S. [1 ,2 ]
Zvereva, A. A. [1 ]
机构：
[1] Russian Acad Sci, Inst Chem, Far East Branch, Vladivostok 690022, Russia
[2] Far Eastern Fed Univ, Vladivostok 690091, Russia
来源：
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2019年 / 55卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
plasma electrolytic oxidation; titanium; coatings; oxidation annealing; surface architecture; nano; and microformations; CATALYTIC-ACTIVITY; BEHAVIOR; OXIDATION; EFFICIENT; STRATEGY; NI5TIO7;
D O I：
10.1134/S2070205119040178
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of the temperature of annealing in air on the surface architecture and composition of oxide layers has been studied. Copper-enriched nanosized crystals of triangular shape are present on the surface at the annealing temperatures of 500-700 degrees C. Rectangular nano- and microcrystals of a possible composition of NiWO4 are formed on the surface after annealing at 750-850 degrees C. Nanowhisker brushes, similar in composition to nickel titanates, cover the surface after annealing at 900-950 degrees C. Transformation of the surface architecture and composition on the micro- and nanolevels correlates to the coatings' activity in the catalysis of the reaction of oxidation of CO to CO2.
引用
收藏
页码：719 / 728
页数：10
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