Comparison of the high-temperature oxidation of uncoated and CVD-FBR aluminized AISI-304 stainless steel

被引：37
作者：
Pérez, FJ
Pedraza, F
Hierro, MP
Balmain, J
Bonnet, G
机构：
[1] Univ Complutense Madrid, Fac CC Quim, Dept CC Mat & Ingn Met, E-28040 Madrid, Spain
[2] Univ La Rochelle, LEMMA, F-17042 La Rochelle, France
来源：
OXIDATION OF METALS | 2002年 / 58卷 / 5-6期
关键词：
CVD-FBR; aluminide coatings; high temperature; isothermal oxidation;
D O I：
10.1023/A:1020529223965
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Aluminide coatings were obtained by means of the CVD-FBR technique at 525degreesC for 1.5 hr under a reactive-gas mixture composed of 10 vol.% H-2 + 1 vol.% HCl, the rest being Ar as the fluidizing inert gas. Subsequent heat treatment at temperatures to 900degreesC was conducted to enhance interdiffusion of the components. As a result, substoichiometric Ni-Al phases were found to form. Uncoated and coated plus heat-treated specimens were then subjected to 950degreesC oxidation for up to about 200 hr under isothermal conditions. The coated plus heat-treated specimens had much lower oxidation rates than the uncoated ones because of the formation of protective alumina scales. Loss of protective behavior occurred only by spalling of the alumina scales upon cooling from the oxidation temperature. The higher oxidation rates of uncoated specimens ha e been attributed to nodule formation and minor subsequent spalling of the oxide scale.
引用
收藏
页码：563 / 588
页数：26
相关论文
共 41 条
[11]   ALUMINUM AND ALUMINA COATINGS ON COPPER BY CHEMICAL VAPOR-DEPOSITION IN FLUIDIZED-BED REACTORS [J].
LAU, KH ;
SANJURJO, A ;
WOOD, BJ .
SURFACE & COATINGS TECHNOLOGY, 1992, 54 (1-3) :234-240
[12]   Controlled formation of surface layers by pack aluminization [J].
Levin, L ;
Ginzburg, A ;
Klinger, L ;
Werber, T ;
Katsman, A ;
Schaaf, P .
SURFACE & COATINGS TECHNOLOGY, 1998, 106 (2-3) :209-213
[13]   Microstructure evolution and activation energy during superplastic deformation of FeAl based intermetallics [J].
Li, DQ ;
Lin, DL .
SCRIPTA MATERIALIA, 1997, 36 (11) :1289-1294
[14]   Failure behavior of an aluminide coating on a co-base superalloy during high-temperature oxidation in air [J].
Liu, PS ;
Liang, KM ;
Gu, SR .
OXIDATION OF METALS, 2000, 54 (3-4) :277-283
[15]   Effects of chromium on the oxidation performance of β-FeAlCr coatings [J].
Liu, ZY ;
Gao, W .
OXIDATION OF METALS, 2000, 54 (3-4) :189-209
[16]   The effect of yttrium and sulfur on the oxidation of FeCrAl [J].
Mennicke, C ;
Schumann, E ;
Ulrich, C ;
Ruhle, M .
HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 4, PTS 1 AND 2, 1997, 251-2 :389-396
[17]  
Oki S, 1998, SURFACE MODIFICATION TECHNOLOGIES XI, P246
[18]   Aluminizing and chromizing bed treatment by CVD in a fluidized bed reactor on austenitic stainless steels [J].
Pérez, FJ ;
Hierro, MP ;
Pedraza, F ;
Gómez, C ;
Carpintero, MC .
SURFACE & COATINGS TECHNOLOGY, 1999, 120 :151-157
[19]   Corrosion protection of low-nickel austenitic stainless steel by yttrium and erbium-ion implantation against isothermal oxidation [J].
Pérez, FJ ;
Cristóbal, MJ ;
Hierro, MP ;
Arnau, G ;
Botella, J .
OXIDATION OF METALS, 2000, 54 (1-2) :87-101
[20]   High temperature corrosion protection of austenitic AISI 304 stainless steel by Si, Mo and Ce ion implantation [J].
Perez, FJ ;
Otero, E ;
Hierro, MP ;
Gomez, C ;
Pedraza, F ;
de Segovia, JL ;
Roman, E .
SURFACE & COATINGS TECHNOLOGY, 1998, 108 (1-3) :127-131
12345