表面技术Issue(6)：22-26,48,6.DOI:10.16490/j.cnki.issn.1001-3660.2015.06.005
SP700钛合金的热处理/阳极氧化工艺研究
Heat Treatment and Anodic Oxidation Process of SP700 Titanium Alloy
摘要
Abstract
ABSTRACT:Objective To fabricate nanoporous film on SP700 titanium alloy by electrochemical anodic oxidation. Methods The dynamic polarization curves and I-t curves were conducted using AutolabPGSTAT30 electrochemical workstation, which adopted three-electrode system, for instance, graphite as auxiliary electrode, SCE as reference electrode, and sample as working electrode. The micro-morphology of porous films on the matrix was observed by SEM. Meanwhile, the effects of process parameters such as heat treatments, anodic oxidation voltage and composites of electrolytes on anodic oxidation behavior were investigated. Results The relative content of α and βphase of titanium alloy changed after solid solution-aging treatment, which made oxygen ion reacted ac-cording to the inner stress on electrochemical reaction interface. Thus, smoother films and excellent corrosion resistance were ob-tained. The F- was a necessary condition of the formation of nanoporous films. The intensity of nanoporous and the thickness of films increased with the increase of F- concentration, what′s more, the diameter of porous decreased as the F- concentration in-creased. The thickness of oxide films increased with the increase of anodic oxidation voltage in certain range. However, excessively high voltage would damage the stability of the oxide films. Conclusion Porous films could be formed on the matrix of titanium alloy by electrochemical anodic oxidation, and gained ideal corrosion resistance. The corrosion resistance of titanium alloy increased un-der conditions of solid solution-aging treatment.关键词
SP700钛合金/热处理/阳极氧化/纳米孔Key words
SP700 titanium alloy/heat treatment/anodic oxidation/nanoporous分类
矿业与冶金引用本文复制引用
王悔改,宋延沛..SP700钛合金的热处理/阳极氧化工艺研究[J].表面技术,2015,(6):22-26,48,6.基金项目
河南科技大学青年科研基金(2014QN016) Fund：Supported by Youth Foundation of Henan University of Science and Technology (2014QN016) （2014QN016）
