Microstructure and high-temperature oxidation behavior of wire-arc sprayed Fe-based coatings

被引：23

作者：

Li, Ran ^{[1
]}

Zhou, Zheng ^{[1
]}

He, Dingyong ^{[1
]}

Zhao, Lidong ^{[2
]}

Song, Xiaoyan ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing, Peoples R China

[2] Rhein Westfal TH Aachen, Inst Oberflachentech, Aachen, Germany

来源：

SURFACE & COATINGS TECHNOLOGY | 2014年 / 251卷

关键词：

Fe-based coating; Wire-arc spray; Cored wire; High-temperature oxidation; HOT CORROSION BEHAVIOR; NI-BASED SUPERALLOY; NA2SO4-60-PERCENT-V2O5; ENVIRONMENT; IRON; CR; RESISTANCE; ALLOYS; 900-DEGREES-C; NICRBSI; NICKEL;

D O I：

10.1016/j.surfcoat.2014.04.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of Fe-xCr cored wires (x = 15, 20, 25, 30, 35 and 40% in weight) were used to produce protective coatings for components used in high-temperature environments by wire-arc spraying. The microstructure, morphology and high-temperature oxidation behavior of the Fe-xCr coatings were investigated. The Fe-xCr coatings presented a homogeneous structure with thin oxide inclusions and low porosity. Thermogravimetric analysis was used to evaluate the high-temperature oxidation behavior of the coatings at a temperature of 650 degrees C under cyclic oxidation conditions. The results showed that all the Fe-xCr coatings exhibited significantly lower weight gain than the uncoated substrate. As Cr content of the coatings increased, the thickness of oxide scales decreased and oxidation resistance improved. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：186 / 190

页数：5

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