LI Dong-sheng
,
DAI Qi-xun
,
CHENG Xiao-nong
,
WANG Rong-rong
,
HUANG Yan
钢铁研究学报(英文版)
The kinetic curve of the high-temperature oxidation of austenitic stainless steel Cr18Ni11Cu3Al3MnNb at different temperatures was measured by weighting method. It is showed that the oxidation curves at 700 and 800 ℃ followed the parabolic law, and the steel presented an excellent anti-oxidation. The surface morphology and structure of the oxide film were studied by scanning electron microscopy and X-ray diffraction methods. A dense oxide film was attained at 700 and 800 ℃, mainly composed of the hexagonal Al2O3, Fe2O3, and a small amount oxide of Cr at 700 ℃. At 900 ℃ the oxide film started to delaminate, and was composed of (Cr,Fe)2O3 and the spinel CuCrMnO4 and Fe(Cr,Al)2O4.
关键词:
austenitic stainless steel
,
high-temperature oxidation
,
oxidation scale
,
cyclic oxidation
,
spinel
