Steam Oxidation Behavior of Austenitic Heat Resistant Steel NF709 at 700 ℃

WANG Bin; LIU Zheng-dong; CHENG Shi-chang; LIU Chun-ming; BAO Han-sheng; WANG Jing-zhong

Corrosion & Protection > 2013 > 34(4): 279-282.

WANG Bin, LIU Zheng-dong, CHENG Shi-chang, LIU Chun-ming, BAO Han-sheng, WANG Jing-zhong. Steam Oxidation Behavior of Austenitic Heat Resistant Steel NF709 at 700 ℃[J]. Corrosion & Protection, 2013, 34(4): 279-282.

Citation:

PDF (1974 KB)

Steam Oxidation Behavior of Austenitic Heat Resistant Steel NF709 at 700 ℃

More Information

Received Date: August 05, 2012

Graphical Abstract

Abstract

Abstract

The oxidation kinetics, the morphology and distribution of chemical composition of oxidaion layers for NF709 austenite heat-resisting steel in water vapor at 700 ℃ were studied by the oxidation weight gain method, SEM with EDS and XRD. The results indicate that the oxidation kinetics of this steel under water-vapor condition follows parabolic equation Δm=ktz at 700 ℃. The thickness of oxidation layer increased with test time. The oxidation scale consists of two layers, the outer layer rich in Fe oxide with a loose and porous structure is more thicker than the inner layer rich in Cr oxide with dense spinel structure. The element diffusion was retarded by the inner layer and so the oxidation rate decreased.
- NF709 austenitic heat-resisting steel,
- oxcidative steam,
- oxidation kinetics,
- oxidation layer

FullText(HTML)

References (14)

References

[1]	Tsunetoshi Tskahashi, Masao Kikuchi. Development of high-strength 20Cr-25Ni(NF709) steel for USC boiler tubes[J]. Nippon Steel Technical Report, 1988, 38(1):26-33.
[2]	Mimura M, Ishitssuka H. Properties of 20Cr-25Ni-Mo-Nb-N steel tubes exposed in eddystone unit No.1 Boiler for 75, 000 hours [C]//Eighth International Conference on Creep and Fatigue at Elevated Temperatures. San Antonio, Texas, USA:[s.n.], 2007:1-6.
[3]	伍明生, 许春义, 鞠振福.湛江发电厂SUS304HTB炉管爆管原因分析[J].电力建设, 2001, 22(4):26-32.
[4]	李辛庚, 齐慧滨, 王学刚, 等.火电厂锅炉再热器管高温腐蚀研究[J].材料保护.2003, 36(6):9-11.
[5]	西安热工研究院有限公司.高温蒸汽氧化试验装置: 中国, ZL 200720032462.7 [P].2008-07-16.
[6]	Lepingle V, Louis G, Petlort D, et al.High temperature corrosion behaviour of some boiler steels in pure water vapor [J].Materials Science Forum, 2001, 372(1/2):239-246.
[7]	Trindade V B, Krupp U, Hanjari B Z, et al.Effect of alloy grain size on the high-temperature oxidation behavior of the austenitic steel TP347 [J].Journal of Materials Research, 2005, 8(4):371-375.
[8]	唐丽英, 贾建民, 蔡晖, 等.超超临界机组HR3C不锈钢蒸汽侧氧化层的微观结构和生长机理[J].腐蚀与防护, 2011, 32(10):775-778.
[9]	岳增武, 傅敏, 李辛庚, 等.晶粒尺寸对P91钢水蒸气氧化行为的影响[J].机械工程材料, 2009, 33(7):98-101.
[10]	Asteman H, Sevensson J E, Johansson L G, et al.Indication of chromium oxide hydroxide evaporation during oxidation of 304L at 873 K in the presence of 10% water vapor [J].Oxidation of Metals, 1999, 52(1):95-111.
[11]	Asten H, Svensson J E, Norel M, et al.Influence of water vapor and flow rate on the high-temperature oxidation of 304L: effect of chromium oxide hydroxide evaporation [J].Oxidation of Metals, 2000, 54(1):11-26.
[12]	耿波, 刘江南, 赵颜芬, 等.T91钢高温水蒸汽氧化层形成机理研究[J].铸造技术, 2004, 25(12):914-918.
[13]	金耀华, 刘江南, 王正品, 等.T91钢高温水蒸气氧化动力学研究[J].铸造技术, 2007, 28(2):207-210.
[14]	李辛庚, 何家文.喷丸处理提高TP304H耐热钢锅炉管抗水蒸气氧化性能应用效果的观察[J].中国腐蚀与防护学报, 2003, 23(3):171-174.

Cited By

Get Citation

PDF

XML

Article views (2) PDF downloads (3)

Turn off MathJax

Article Contents

Abstract

References

Steam Oxidation Behavior of Austenitic Heat Resistant Steel NF709 at 700 ℃

Abstract

References

Catalog

Export File

Citation

Format

Content