High-Temperature Oxidation Behavior of Aluminized AISI 4130 Steel

被引：7

作者：

Badaruddin, Mohammad ^{[1
]}

Wang, Chaur Jeng ^{[3
]}

Wardono, Herry ^{[1
]}

Tarkono ^{[1
]}

Asmi, Dwi ^{[2
]}

机构：

[1] Lampung Univ, Dept Mech Engn, Bandar Lampung 35145, Indonesia

[2] Lampung Univ, Math & Nat Sci Fac, Phys Dept, Jalan Soemantri Brojonegoro 1, Bandar Lampung 35145, Indonesia

[3] Natl Taiwan Univ Sci & Technol NTUSI, Dept Mech Engn, 43 Keelung Rd,Sec 4, Taipei 106, Taiwan

来源：

INTERNATIONAL SYMPOSIUM ON FRONTIER OF APPLIED PHYSICS (ISFAP) 2015 | 2016年 / 1711卷

关键词：

CR-MO STEELS; AL-SI; HOT;

D O I：

10.1063/1.4941624

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

AISI 4130 steel was dipped into a molten aluminum bath at 700 degrees C for 16 s to produce an aluminide coating on the steel substrate. The coating, which consisted of an Al-rich layer and an FeAl3 and Fe2Al5 intermetallic layer, strongly adhered to the steel substrate. High-temperature oxidation of the bare steel and aluminized steel was performed by thermogravimetry at 850 degrees C for 49 h in static air. The oxidation products were characterized by scanning electron microscopy and energy-dispersive spectroscopy. The aluminide coating could increase the oxidation resistance of the bare steel by a factor of similar to 19. The increase in high-temperature oxidation resistance of the aluminized steel is attributed to the formation of protective alumina scale (alpha-Al2O3). Although iron oxide nodules grew on the aluminide coating surface, the oxidation rate of the aluminide coatings was very low. After 49 h of oxidation, agglomerates of alpha-Al2O3 fine grains grew on the rod-shaped FeAl phases.

引用

页数：6

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