您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 6    December 2002

[PDF Download]    [Flash Online]

    

Corrosion of titanium in 
supercritical water oxidation environments
LU Jian-shu(卢建树)1, MAO Zhi-yuan(毛志远)2,
ZHANG Jiu-yuan(张九渊)1, MA Chun-an(马淳安)1,
MAO Xin-biao(毛信表)1, LI Xiao-hua(李肖华)

1. College of Chemical Engineering,
Zhejiang University of Technology,Hangzhou 310014, China; 
2. College of Materials and Chemical Engineering, Zhejiang University,
 Hangzhou 310027,China

Abstract:Supercritical water oxidation (SCWO) can effectively destroy many kinds of civilian and military wastes. The high temperature and high pressure SCWO operation conditions generate very corrosive environment that many engineering materials fail to withstand. Preliminary test shows that titanium may be a promising material in most of SCWO conditions. Commercially pure titanium is tested in four kinds of SCWO environments. Phenol, sodium dodecyl-benzosulfonate, n-amine phenol, and chlorpyrifos were chosen as typical target pollutants. The results show that titanium is only superficially attacked in the first three SCWO environments while in chlorpyrifos SCWO medium titanium is corroded. The corrosion is temperature dependent, with heavier corrosion occurring at near critical temperature. X-ray diffraction analysis shows that the corrosion products consist of titanium oxy-phosphates and titanium oxide, in which Ti5O4(PO4)4 is the main phase.

 

Key words:   titanium; corrosion; supercritical water oxidation

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn