High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments

被引：7

作者：

Hagarova, Maria ^{[1
]}

Baranova, Gabriela ^{[1
]}

Fujda, Martin ^{[1
]}

Matvija, Milos ^{[1
]}

Hornak, Peter ^{[1
]}

Bednarcik, Jozef ^{[2
]}

Yudina, Daria ^{[2
]}

机构：

[1] Tech Univ Kosice, Fac Mat Met & Recycling, Inst Mat & Qual Engn, Kosice 04200, Slovakia

[2] Pavol Jozef Safarik Univ Kosice, Inst Phys, Fac Sci, Kosice 04154, Slovakia

来源：

MATERIALS | 2022年 / 15卷 / 02期

关键词：

creep resistant steels; high temperature oxidation; water vapour; oxide layer; Cr oxide; STEAM OXIDATION; P91;

D O I：

10.3390/ma15020616

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study describes the water vapour effect on the oxidation resistance of 9Cr creep resistant steels. Boiler P91 and MarBN steels were oxidized for 3000 h in a simulated humid atmosphere with ~10% water vapour. The oxidation kinetics had a stable course for 1000 h and was evaluated by the weight gain curves for both experimental steels and both oxidation temperatures. The oxidation rate was higher at 650 degrees C versus 600 degrees C, as reflected by the oxidation rate coefficient. A significant increase occurred after 1000 h of oxidation, which was related to the local breakdown oxide scale and oxide nodules were formed on steel. This oxidation behavior was influenced by the fact that a compact spinel structure of iron oxides and alloying elements were not formed on the steel. Analysis after 3000 h of exposure showed hematite Fe2O3 formed on the outer layer, magnetite Fe3O4 on the middle layer, and the bottom layer consisted of iron-chromium-spinel (Fe,Cr)(2)O-3.

引用

页数：20

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