Steam Oxidation Resistance of Slurry Aluminum and Aluminum/Silicon Coatings on Steel for Ultrasupercritical Steam Turbines

被引：19

作者：

Boulesteix, Claire ^{[1
]}

Pedraza, Fernando ^{[1
]}

Proy, Manuel ^{[1
]}

Lasanta, Isabel ^{[2
]}

de Miguel, Teresa ^{[2
]}

Illana, Andrea ^{[2
]}

Javier Perez, Francisco ^{[2
]}

机构：

[1] Univ La Rochelle, LASIE, UMR CNRS 7356, F-17042 La Rochelle 1, France

[2] Univ Complutense Madrid, Fac Ciencias Quim, Grp Ingn Superficies & Mat Nanoestruct, E-28040 Madrid, Spain

来源：

OXIDATION OF METALS | 2017年 / 87卷 / 3-4期

关键词：

Steam; Oxidation; Al and Al/Si coatings; Steel; AUSTENITIC STAINLESS-STEELS; HIGH-TEMPERATURE OXIDATION; CVD-FBR TECHNOLOGY; FERRITIC STEELS; MICROSTRUCTURE EVOLUTION; MECHANICAL-PROPERTIES; SULFIDATION BEHAVIOR; POWER-PLANTS; AL; PRECIPITATION;

D O I：

10.1007/s11085-017-9726-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Aluminum and aluminum/silicon coatings were deposited on ferritic-martensitic P92 and austenitic IN-800HT steels in a single-step process from an environmentally friendly slurry. A B2-FeAl phase formed on both the Al and the Al/Si coatings formed on P92. On IN-800HT, both Al and Al/Si grew a B2-(Fe,Ni)Al matrix. An additional zeta 2-(Fe,Ni)(3)Al-10 phase was also detected in the Al/Si coatings. The behavior of these coatings was then studied in steam at 650 A degrees C and 1 bar for 2000 h. The uncoated P92 displayed a significant mass gain compared to the coated ones. The coatings also reduced the mass gains of the uncoated IN-800HT but to a lesser extent than in P92. The reduction in kinetics of the coated specimens was attributed to the major formation of a protective alpha-Al2O3 oxide.

引用

页码：469 / 479

页数：11

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