The high-temperature oxidation of bulk nanocrystalline 304 stainless steel in air

The high-temperature oxidation of bulk nanocrystalline 304 stainless steel in air
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大块纳米晶304不锈钢在空气中的高温氧化

DOI:
10.1016/j.corsci.2013.03.008
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发表时间:
2013-07
期刊:
影响因子:
8.3
通讯作者:
Z.D. Zhang
Z.D. Zhang
中科院分区:
材料科学1区
文献类型:
--
作者:
M. Sun;H.B. Han;K. Long;Z.D. Zhang

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采用热重分析、X射线光电子能谱和扫描电子显微镜研究了块体纳米晶304不锈钢(BN-SS 304)和常规多晶304不锈钢(CP-SS 304)在900°C空气中24 h的高温氧化行为。用紫外光电子能谱研究了BN-SS 304、CP-SS 304及其氧化膜的价电子构型。BN-SS 304的高温氧化性能在初始氧化和等温氧化过程中均有所提高,这是由于其功函数较大,化学稳定性较好,氧化膜化学稳定性较好,致密性较好,O2吸附和扩散较弱,Cr和Mn原子扩散较弱。
The high-temperature oxidation of bulk nanocrystalline 304 stainless steel (BN-SS304) and its conventional polycrystalline counterpart (CP-SS304) in air at 900°C for 24h were studied by thermogravimetric analysis, X-ray photoelectron spectroscopy and scanning electron microscope. We studied the valence electron configurations of BN-SS304, CP-SS304 and their oxide scales by ultra-violet photoelectron spectroscopy. The high-temperature oxidation resistance of BN-SS304 was enhanced in both initial and isothermal oxidation, which was attributed to its larger work function and more chemical stability, its more chemically stable and compact oxide scale, its weaker O2adsorption and diffusion, its weaker Cr and Mn atoms diffusions.
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