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Corrosion behavior of titanium silicide surface with hydrogen peroxide: formation of sub-μm TiOx- based spheres, nanocomposite TiOx/SiOx phases, and mesoporous TiOx/SiOx network.
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SYSNO ASEP 0525515 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Corrosion behavior of titanium silicide surface with hydrogen peroxide: formation of sub-μm TiOx- based spheres, nanocomposite TiOx/SiOx phases, and mesoporous TiOx/SiOx network. Author(s) Jandová, Věra (UCHP-M) RID, ORCID, SAI
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Kupčík, Jaroslav (UCHP-M) RID, ORCID, SAI
Pola, Josef (UCHP-M) RID, ORCID, SAI
Soukup, Karel (UCHP-M) RID, SAI, ORCID
Mikysek, Petr (GLU-S) SAI, ORCID
Křenek, T. (CZ)
Kovářík, T. (CZ)
Stich, F. (DE)
Docheva, D. (DE)Article number 147133 Source Title Applied Surface Science. - : Elsevier - ISSN 0169-4332
Roč. 529, NOV 1 (2020)Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords titanium silicide SiOx microphases ; hydrogen peroxide ; SiOx microphases Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry Subject RIV - cooperation Institute of Geology - Physical ; Theoretical Chemistry Method of publishing Open access with time embargo (02.11.2022) Institutional support UCHP-M - RVO:67985858 ; GLU-S - RVO:67985831 UT WOS 000564391100004 EID SCOPUS 85087663597 DOI 10.1016/j.apsusc.2020.147133 Annotation So far unexplored corrosion of titanium silicide (Ti5Si3) surface with acidified hydrogen peroxide is of interest due to its potential use in improving osseointegration of titanium implants coated by titanium silicides. Detailed examination of corrosion products by FTIR, Raman and XP spectroscopy, electron microscopy, XRD, BET and light scattering techniques allows recognition of hydrated nanocomposite TiOx/SiOx (x≤2) phases composed of segregated amorphous SiOx species and TiOx–based networks containing Ti-O-Si and -O-O- bonds. The appearance of the TiOx networks depends on the extent of peroxidation. A less progressed peroxidation yields sub-μm-sized TiOx-based spheres which upon annealing develop anatase nanograins withstanding 800 o C. A more progressed peroxidation produces larger mesoporous TiOx-based bodies which disintegrate upon sonication into micrometer-sized entities. The proposed mechanism of surface corrosion is based on the complementary use of analytical techniques. The one-step production of bioactive (hydrated TiOx and SiOx) species deserves to be explored in osseointegration studies of slightly corroded Ti5Si3-coated titanium implants. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0310269
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