Chemical incorporation of SiO_(2) into TiO_(2) layer by green plasma enhancer and quencher agents for synchronized improvements in the protective and bioactive properties  

作　　者：Mosab Kaseem Ananda Repycha Safira Mohammad Aadil Han-Choel Choe 

机构地区：[1]Corrosion and Electrochemistry Laboratory,Department of Nanotechnology and Advanced Materials Engineering,Sejong University,Seoul,05006,South Korea [2]Advanced Functional Surface and Biomaterials Research Lab,Department of Dental Materials and Research Center of Surface Control for Oral Tissue Regeneration(BRL Center of NRF),Convergence Research Center for Treatment of Oral Soft Tissue Disease(MRC),College of Dentistry,Chosun University,Gwangju,61452,South Korea

出　　处：《Nano Materials Science》2024年第5期596-610,共15页纳米材料科学（英文版）

基　　金：supported by National Research Foundation of Korea:2021R1A4A1030243;RS-2023-00222390);supported by the National Research Foundation of Korea(NRF)funded by the Korean government(MSIT)(No.2022R1A2C1006743).

摘　　要：This study explores the dynamic interaction between environmentally sustainable plasma enhancer and quencher agents during the incorporation of SiO_(2) into a TiO_(2) layer,with the primary objective of simultaneously augmenting protective and bioactive attributes.This enhancement is realized through the synergistic utilization of Tetraethyl orthosilicate(TE)and Stevia(ST)within a plasma-assisted oxidation process.To achieve this goal,Ti–6Al–4V alloy underwent oxidation in an electrolyte solution containing acetate-glycerophosphate,with the addition of TE and ST separately and in combination.TE,as a silicon oxide(SiO_(2))precursor,facilitates the creation of a calcium-rich,rough,porous layer by undergoing hydrolysis to generate silanol groups(Si–OH),which subsequently condense into silicon-oxygen-silicon(Si–O–Si)bonds,resulting in SiO_(2) formation.In contrast,ST acts as a plasma quencher,absorbing highly reactive plasma species during the oxidation process,reducing energy levels,and diminishing sparking intensity.The combination of TE and ST results in moderate sparking,balancing Stevia's quenching effect and TE's sparking influence.As a result,this coating exhibits enhanced corrosion resistance and bioactivity compared to using either ST or TE alone.The study highlights the potential of this synergistic approach for advanced TiO_(2)-based coatings.

关 键 词：Ti-6Al-4V alloy Plasma quencher HYDROLYSIS Corrosion Bioactivity 

分 类 号：TG17[金属学及工艺—金属表面处理]