Failure analysis of bank front boiler tubes

被引：40
|
作者：
Khajavi, M. R. [1 ]
Abdolmaleki, A. R. [1 ]
Adibi, N. [1 ]
Mirfendereski, S. [1 ]
机构：
[1] Res Inst Petr Ind, Ind & Environm Protect Div, Tehran, Iran
来源：
ENGINEERING FAILURE ANALYSIS | 2007年 / 14卷 / 04期
关键词：
boiler tube; failure analysis; caustic corrosion; phosphate corrosion; mechanism;
D O I：
10.1016/j.engfailanal.2005.10.017
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Waterside corrosion problems can seriously affect reliability of boiler systems. Two significant of waterside corrosion mechanisms are caustic corrosion and phosphate corrosion. Two critical factors contribute to these failures. The first is availability of NaOH or of alkaline-producing salts. The second contributing factor is the mechanism of concentration. In this paper a case study on bank front tubes are presented. Different tests and examinations including visual examination, optical microscope, SEM, and XRD revealed the root causes of this boiler-tube failure were caustic and phosphate corrosion. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：731 / 738
页数：8
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