文献类型：期刊文献

英文题名：Solvothermal fabrication of TiO2 nanosheet films on degradable Mg-Zn alloys

作者：Hou, S.[1]

通讯作者：Hou, S[1]

机构：[1]Xinxiang Univ, Mech & Elect Engn Coll, Urumqi, Xinjiang, Peoples R China

第一机构：新乡学院机电工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Mech & Elect Engn Coll, Urumqi, Xinjiang, Peoples R China.|[1107111]新乡学院机电工程学院;[11071]新乡学院;

年份：2016

卷号：32

期号：10

起止页码：745-749

外文期刊名：SURFACE ENGINEERING

收录：;EI(收录号：20163002627718);Scopus(收录号：2-s2.0-84978525670);WOS:【SCI-EXPANDED(收录号:WOS:000381104100004)】；

基金：This work was supported by National Natural Science Foundation of China (No. 51171174/E0113).

语种：英文

外文关键词：Solvothermal; Mg-Zn alloy; Anatase TiO2; Nanosheet films; Corrosion resistance

摘要：Anatase TiO2 nanosheet films were fabricated on Mg-Zn alloy substrates through a special solvothermal method, aiming to improve the corrosion resistance of degradable Mg-Zn alloy stents. In this novel synthesis process, absolute alcohol was used as solvent, and small amounts of hydrofluoric acid and NH4F aqueous solution were used to adjust the hydrolysis rate of titanium precursors and the crystal morphology of anatase TiO2, respectively. The NH4F played a key role in the growth of TiO2 nanosheets by supplying fluorine ions (F-). The anatase TiO2 films had a compact surface consisting of interleaving nanosheets with thickness of about 50 nm. In simulated body fluids, the corrosion current density (I-corr) of Mg-Zn alloy substrates decreased from 789.5 to 24.4 mu A cm(-2), after being coated with the TiO2 nanosheet films.