摘要
通过溶胶凝胶 (Sol gel)法经涂刷、烧结、退火等工艺制备了添加不同含量SnO2 的RuO2 +SnO2 +TiO2 /Ti三元涂层钛阳极。并通过X射线衍射 (XRD)、差热分析 (DTA)、透射电子显微 (TEM )分析了SnO2 组元对RuO2+TiO2 +SnO2 /Ti阳极涂层组织、晶粒尺寸和外观形貌的影响。结果表明 ,所获三元涂层颗粒尺寸细小 ,均为纳米结构 ,且添加SnO2 组元后有显著细化涂层晶粒的效果。在不同退火温度下 ,随SnO2 含量的增加 ,涂层晶粒均能发生一定程度的细化。所获三元阳极涂层主要组成物相为金红石 (Ru ,Sn ,Ti)O2 固溶体 ,SnO2 组元含量较高的涂层出现不同成分金红石相共存的现象 ;当涂层退火温度由 45 0℃升高至 6 0 0℃后 ,SnO2 组元不能阻止 (Ru ,Sn ,Ti)O2 固溶体脱溶分解 ,并析出六方晶系Ru单质 ;添加SnO2 组元的RuO2 +SnO2 +TiO2
RuO 2+SnO+TiO 2 titanium anode coatings with different amounts of SnO 2 were obtained by a sol-gel procedure through brushing, sintering and annealing. The microstructure, morphology and particle size of the coatings were examined by means of XRD, DTA and TEM. The results show that the crystal size of the coatings is nanometered, which is sharply reduced when the content of SnO 2 increases at the different annealing temperatures. The coatings mainly consist of a solid solution-(Ru, Sn, Ti)O 2 with several different kinds of rutile phases which coexist when the content of SnO 2 increases. When the annealing temperature changes from 450 ℃ to 600 ℃, the (Ru, Sn, Ti)O 2 solid solution is decomposed and hexagonal Ru is found among the studied coatings. The morphology of the crystals affected greatly by SnO 2 is equiaxial.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2002年第5期920-924,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目 ( 5 96 82 0 0 6 )
高等院校骨干教师资助计划资助项目
