Microstructural investigation of the oxide formed on TP 347H FG during long‐term steam oxidation
作者： A. N. Hansson , H. Danielsen , F. B. Grumsen , M. Montgomery
关键词: Alloy 、 Grain boundary 、 Internal oxidation 、 Superheater 、 Spinel 、 Layer (electronics) 、 Corrosion 、 Oxide 、 Metallurgy 、 Materials science 、 Composite material
摘要: The long-term oxidation behaviour of TP347H FG in ultra supercritical steam conditions was assessed by exposing the steel test superheater loops a Danish coal-fired power plant and characterising oxide layer with reflective light electron microscopy. Double layered scales formed during oxidation. TEM investigations reveal that inner consists particles metallic Ni/Fe Fe-Cr spinel interior former alloy grains compact Cr 2 O 3 along grain boundaries. morphology suggests grows internal grains. thickness did not change significantly time temperature for exposure times up to 30 000 h. Faster diffusion within fine-grained at higher temperatures is held responsible this observation. This hypothesis supported kinetic data. low high after 58 h than expected.
mysciencework.com参考文章(25)
H. Asteman, J.-E. Svensson, L.-G. Johansson, Evidence for Chromium Evaporation Influencing the Oxidation of 304L: The Effect of Temperature and Flow Rate Oxidation of Metals. ,vol. 57, pp. 193- 216 ,(2002) , 10.1023/A:1014877600235
H. Hindam, D. P. Whittle, Evidence for the growth mechanism of Cr/sub 2/O/sub 3/ at low oxygen potentials Journal of The Electrochemical Society. ,vol. 130, pp. 1519- 1523 ,(1983) , 10.1149/1.2120023
J TOPFER, S AGGARWAL, R DIECKMANN, Point defects and cation tracer diffusion in (CrxFe1 − x)3 − δO4 spinels Solid State Ionics. ,vol. 81, pp. 251- 266 ,(1995) , 10.1016/0167-2738(95)00190-H
T. Ericsson, A study of the Cr-depleted surface layers formed on four Cr-Ni steels during oxidation in steam at 600° C and 800° C Oxidation of Metals. ,vol. 2, pp. 401- 417 ,(1970) , 10.1007/BF00604478
Torsten Ericsson, Stratified oxide scale growth on two Cr-Ni steels oxidized in high-pressure steam at 800°C Oxidation of Metals. ,vol. 2, pp. 173- 205 ,(1970) , 10.1007/BF00603656
Melanie Montgomery, Ole Hede Larsen, Søren Aakjær Jensen, Ole Biede, Field Investigation of Steamside Oxidation of TP347H Materials Science Forum. pp. 1007- 1014 ,(2004) , 10.4028/WWW.SCIENTIFIC.NET/MSF.461-464.1007
Stephen Osgerby, A. Tony Fry, Steam Oxidation Resistance of Selected Austenitic Steels Materials Science Forum. pp. 1023- 1030 ,(2004) , 10.4028/WWW.SCIENTIFIC.NET/MSF.461-464.1023
A. F. Smith, M. O. Tucker, R. Hales, The kinetics of duplex scale formation on 18/8 type stainless steel Oxidation of Metals. ,vol. 17, pp. 329- 343 ,(1982) , 10.1007/BF00742115
Nobuo Otsuka, Yoshiaki Shida, Hisao Fujikawa, Internal-external transition for the oxidation of Fe-Cr-Ni austenitic stainless steels in steam Oxidation of Metals. ,vol. 32, pp. 13- 45 ,(1989) , 10.1007/BF00665267
G. Bamba, Y. Wouters, A. Galerie, G. Borchardt, S. Shimada, O. Heintz, S. Chevalier, Inverse growth transport in thermal chromia scales on Fe–15Cr steels in oxygen and in water vapour and its effect on scale adhesion Scripta Materialia. ,vol. 57, pp. 671- 674 ,(2007) , 10.1016/J.SCRIPTAMAT.2007.06.050