Effects of TiN film coating on electrochemical behaviors of nanotube formed Ti-xHf alloys

Ti-xHf （x=10%, 20%, 30% and 40%, mass fraction） alloys were prepared by arc melting, and the microstructure was controlled for 24 h at 1 000 ℃ in argon atmosphere. The formation of nanotube was conducted by anodizing on Ti-Hf alloys in 1.0 mol/L H3PO4 electrolytes with small amounts of NaF at room t...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2009-08, Vol.19 (4), p.857-861
Main Authors: LEE, Kang, KIM, Won-Gi, CHO, Joo-Young, EUN, Sang-Won, CHOE, Han-Cheol
Format: Article
Language:English
Subjects:
0.9％NaCl溶液
corrosion behaviors
nanotube
Ti alloy
TiN coating
合金制备
微观结构
扫描电子显微镜
氮化钛涂层
电化学行为
纳米管
薄膜包衣
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ti-xHf （x=10%, 20%, 30% and 40%, mass fraction） alloys were prepared by arc melting, and the microstructure was controlled for 24 h at 1 000 ℃ in argon atmosphere. The formation of nanotube was conducted by anodizing on Ti-Hf alloys in 1.0 mol/L H3PO4 electrolytes with small amounts of NaF at room temperature. And then TiN coatings were coated by DC-sputtering on the anodized surface. Microstructures and nanotube morphology of the alloys were examined by field emission scanning electron microscopy（FE-SEM） and X-ray diffractometry（XRD）. The corrosion properties of the specimens were examined through potentiodynamic test （potential range from -1 500 to 2 000 mV） in 0.9 % NaCl solution by potentiostat. The microstructure shows the acicular phase and α＇ phase with Hf content. The amorphous oxide surface is transformed to crystalline anatase phase. TiN coated nanotube surface has a good corrosion resistance.
ISSN:1003-6326
DOI:10.1016/S1003-6326(08)60364-7