文献类型：期刊文献

中文题名：镁合金血管支架TiO_(2)涂层的微形貌调控

英文题名：Micromorphology Control of TiO_(2) Coating Prepared on Mg Alloy Stent

作者：侯树森[1];李悦[1];杨婷婷[1];于卫新[1];连黎明[1]

第一作者：侯树森

机构：[1]新乡学院机电工程学院,河南新乡453003

第一机构：新乡学院机电工程学院

年份：2022

卷号：42

期号：4

起止页码：472-476

中文期刊名：特种铸造及有色合金

外文期刊名：Special Casting & Nonferrous Alloys

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；

基金：河南省高等学校重点科研项目计划(22A430035);河南省重点研发与推广专项&科技攻关资助项目(182102210120,222102230023)

语种：中文

中文关键词：镁合金;血管支架;TiO_(2)涂层;微形貌;溶剂热法

外文关键词：Mg Alloy;Coronary Stents;TiO_(2)Coating;Micromorphology;Solvothermal Synthesis

摘要：采用溶剂热法在镁合金血管支架表面制备了具有微纳米结构的锐钛矿TiO_(2)涂层,研究了溶剂热反应条件对涂层微观形貌的影响。结果表明,通过改变反应时间、HF含量以及反应溶液中F浓度,可获得不同微纳米结构的TiO_(2)涂层。随着反应时间延长,锐钛矿晶体形貌由八面体向片层状转变且致密化;随着反应温度升高,片层微结构逐渐增多、片层的厚度逐渐减小;随着溶液中HF含量增加,片状TiO_(2)的分布逐渐稀疏,涂层化效率降低;随着F离子浓度增加,片状TiO_(2)的排列形式趋于分散,由多片交叉叠加向单片演变。反应条件为160℃×10 h,溶剂配比为0.25 mL/HF(40%),0.25 mL/NH_(4)F(0.2 mol/L)时,镁合金血管支架表面可获得均匀致密、呈片状规整排列的微纳米结构TiO_(2)涂层,表面粗糙度为350.7 nm。
Anatase titanium oxide coatings with micro-nano structure were prepared on the surface of magnesium alloy vascular stent by solvothermal method.The effects of the solvothermal reaction conditions on the microstructure of the coatings were investiagted.The results show that the titanium oxide coatings with different micro-nano structures can be obtained by changing the reaction time,reaction temperature,HF content and F^(-)concentration in the reaction solution.With the reaction time increasing,the coating becomes more denser and the anatase morphology is developed from octahedron to platelike structure.With the increase of reaction temperature,the platelike microstructure is increased with the decrease of the thickness.With the increase of HF content in the solution,the distribution of titanium oxide is gradually sparse and the coating efficiency is decreased.With the F^(-)increasing,the arrangement of platelike titanium oxide is tended to be dispersed from multiple overlapping to single.Under the conditions of 160℃,10 h,0.25 mL/HF(40%),0.25 mL/NH_(4)F(0.2 mol/L),the uniform and compact titanium oxide coating with regular lamellar arrangement are obtained on the surface of magnesium alloy vascular stent,and the surface roughness is 350.7 nm.