Abstract 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° 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.

中文翻译：

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过氧化氢对硅化钛表面的腐蚀行为：亚微米 TiOx 基球体、纳米复合 TiOx/SiOx 相和介孔 TiOx/SiOx 网络的形成

摘要 迄今为止，酸化过氧化氢对硅化钛 (Ti5Si3) 表面的未探索腐蚀引起了人们的兴趣，因为它可能用于改善由硅化钛涂层的钛植入物的骨整合。通过 FTIR、拉曼和 XP 光谱、电子显微镜、XRD、BET 和光散射技术对腐蚀产物进行详细检查，可以识别由分离的无定形 SiOx 物质和含 Ti 的基于 TiOx 的网络组成的水合纳米复合材料 TiOx/SiOx (x ≤ 2) 相-O-Si 和 -OO- 键。TiOx 网络的出现取决于过氧化的程度。较慢的过氧化反应产生亚微米尺寸的基于 TiOx 的球体，其在退火时会形成可承受 800°C 的锐钛矿纳米颗粒。更进一步的过氧化产生更大的介孔 TiOx 基体，其在超声处理时分解成微米大小的实体。所提出的表面腐蚀机制是基于分析技术的补充使用。生物活性（水合 TiOx 和 SiOx）物种的一步生产值得在轻微腐蚀的 Ti5Si3 涂层钛植入物的骨整合研究中进行探索。