Studies on initial stage of high temperature oxidation of Fe - 9 to 12% Cr alloys in water vapour environment
Fe - 9 to 12%Cr alloys are a material for the thick sections boiler components and steam lines of a power plant. The role Fe - 9 to 12%Cr alloys is becoming more prominent in the development of a new generation of Ultra-Supercritical (USC) Power Plant due to the target operating temperature is re...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2012
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/27470/ http://irep.iium.edu.my/27470/ http://irep.iium.edu.my/27470/1/Studies_on_initial_stage_of_high_temperature_oxidation_of_fe-9_to_12cr_alloys_in_water_vapour_environment.pdf |
| Summary: | Fe - 9 to 12%Cr alloys are a material for the thick sections boiler components and steam
lines of a power plant. The role Fe - 9 to 12%Cr alloys is becoming more prominent in the
development of a new generation of Ultra-Supercritical (USC) Power Plant due to the target
operating temperature is reaching 620 °C (893 K), in 100% steam condition as well as pressure in
excess of 300 bar (30 × 106 Pa). In such condition, the integrity of Fe - 9 to 12%Cr alloys relies on
the oxide scale formed during the time of exposure. However due to the high temperature and water
vapor condition, it is a well known fact that, the formation of oxide scale is accelerated thus
depleting the structural integrity of the Fe - 9 to 12%Cr alloys over the time. Studies show that not
only the formation of protective oxide scale was suppressed but the formation of non-protective
oxide scale was accelerated instead. Decades of studies done by various groups around the globe
has yet to have consensual on the exact mechanism of this phenomenon. Initial stage oxidation of
these alloys plays great roles in hope to understand the formation of oxide scale in water vapor
condition at high temperature. This paper reviews previous research works to understand the initial
stage oxidation of Fe - 9 to 12%Cr alloys at high temperature in water vapor condition. |
|---|