Titania coating formation on hydrostatically extruded pure titanium by micro-arc oxidation method

作     者：Ł.Maj D.Wojtas A.Jarz˛ebska M.Bieda K.Trembecka-Wójciga R.Chulist W.Kozioł A.Góral A.Trelka K.Janus J.Kawałko M.Kulczyk F.Muhaffel H.Çimeno˘glu K.Sztwiertnia ?.Maj;D.Wojtas;A.Jarz?bska;M.Bieda;K.Trembecka-Wójciga;R.Chulist;W.Kozio?;A.Góral;A.Trelka;K.Janus;J.Kawa?ko;M.Kulczyk;F.Muhaffel;H.?imeno?lu;K.Sztwiertnia

作者机构：Institute of Metallurgy and Materials SciencePolish Academy of SciencesReymonta 25Krakow 30-059Poland Faculty of Physics and Applied Computer ScienceAGH University of Science and TechnologyKrakowPoland Academic Centre of Materials and NanotechnologyAGH University of Science and TechnologyKrakowPoland Institute of High Pressure PhysicsPolish Academy of SciencesWarsawPoland Department of Metallurgical and Materials EngineeringIstanbul Technical UniversityIstanbulTurkey 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第111卷第16期

页      面：224-235页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the Institute of Metallurgy and Materials Science of the Polish Academy of Sciences within the statutory work Z-4/2021 partly supported by the EU Project POWR.03.02.00–00-I004/16 

主　　题：Micro-arc oxidation Titanium of commercial purity Hydrostatic extrusion Surface topography Microstructure 

摘      要：In this work,the microstructure of titania coating fabricated on the surface of hydrostatically extruded titanium grade 4 with the use of the micro-arc oxidation method was *** surface topography and microstructure investigations performed with atomic force microscopy and scanning and transmission electron microscopy revealed that,by using an Na_(2)HPO_(4)electrolyte,a well-adherent porous coating is produced on the top surface and side walls of the extruded *** distribution of chemical elements was analyzed by using energy dispersive X-ray *** chemical elements dissolved in the electrolyte(Na,P and O)incorporated into the *** locates preferentially in the outer part of the coating,while phosphorus and oxygen are distributed throughout the whole *** most relevant finding shows that a grain refinement caused by a hydrostatic extrusion provoked an increase in density of high-angle grain boundaries(HAGB),which in turn secured the formation of a continuous amorphous layer close to the *** presence of this layer compensates for the effect of anisotropic substrate,producing a comparable and homogenous microstructure with a large number of micropores.