High temperature oxidation in boiler environment of chromized steel

被引：8

作者：

Alia, F. F. ^{[1
]}

Kurniawan, T. ^{[1
]}

Asmara, Y. P. ^{[1
]}

Ani, M. H. B. ^{[2
]}

Nandiyanto, A. B. D. ^{[3
]}

机构：

[1] Univ Malaysia Pahang, Fac Mech Engn, Struct & Mat Degradat Focus Grp, Pekan 26600, Pahang, Malaysia

[2] Int Islamic Univ Malaysia, Fac Engn, Dept Mfg & Mat, POB 10, Kuala Lumpur 50728, Malaysia

[3] Univ Pendidikan Indonesia, Dept Chem, Jl Dr Setiabudhi 229, Bandung 40154, Indonesia

来源：

4TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING RESEARCH (ICMER2017) | 2017年 / 257卷

关键词：

OXIDES; IRON;

D O I：

10.1088/1757-899X/257/1/012086

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The demand for increasing efficiency has led to the development and construction of higher operating temperature power plant. This condition may lead to more severe thickness losses in boiler tubes due to excessive corrosion process. Hence, the research to improve the corrosion resistance of the current operated material is needed so that it can be applied for higher temperature application. In this research, the effect of chromizing process on the oxidation behaviour of T91 steel was investigated under steam condition. In order to deposit chromium, mixture of chromium (Cr) powder as master alloy, halide salt (NH4Cl) powder as activator and alumina (Al2O3) powder as inert filler were inserted into alumina retort together with the steel sample and heated inside furnace at 1050 degrees C for ten hours under argon gas environment. Furthermore, for the oxidation process, steels were exposed at 700 degrees C at different oxidation time (6h-24h) under steam condition. From FESEM/EDX analysis, it was found that oxidation rate of pack cemented steel was lower than the un-packed steel. These results show that Cr from chromizing process was able to become reservoir for the formation of Cr2O3 in high temperature steam oxidation, and its existence can be used for a longer oxidation time.

引用

页数：7

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