SP700钛合金表面纳米孔结构制备  

Preparation of Nanoporous-Structure Thin Film on SP700 Titanium Alloy Surface

作　　者：李亚宁[1] 张文彦[1] 李广忠[1] 付安庆[1] 

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《稀有金属材料与工程》2008年第A04期520-522,共3页Rare Metal Materials and Engineering

摘　　要：采用电化学阳极氧化法在SP700钛合金表面制备了纳米多孔结构膜。电解质为含F-离子和不含F-离子的乙二醇溶液体系。研究了低压条件下纳米多孔结构的形成机制。利用EG&GPARM273恒电位仪测量动态电势极化曲线和阳极极化曲线,利用场发射扫描电子显微镜(JSM-6700FESEM)初步表征了自组装纳米孔的形貌和尺寸。分析表明,纳米孔形成的临界电压为2V,F-离子影响着最终纳米孔的孔深和孔壁厚度,导致孔加深和孔壁的减薄。Nanoporous film on SP700 titanium alloy was fabricated by electrochemical anodic oxidation. The mechanism of nanoporou-structure formation at low potential was investigated. Anodization was carried out in fluoride-containing and fluoride-free ethylene glycol electrolytes. Potentiodynamic polarization measurements and potentiostatic anodization experiments were conducted using an EG G PAR M273 potentiostat. The morphology and diameter of nanoporous-structure film was characterized using a JSM-6700 （Japan） field emission scanning electron microscope （FE-SEM）. The analyses reveal that fluoride ion affects the scale of the resulting nanoporous structure and leads to deepening of the pores and thinning of the pore walls.

关 键 词：阳极氧化 纳米孔 SP700钛合金 机制 

分 类 号：TB383.1[一般工业技术—材料科学与工程]