Microstructure and properties of arc sprayed coatings containing Fe based amorphous phase and nanocrystallites

被引：13

作者：

Fu, B. -Y. ^{[1
]}

He, D. -Y. ^{[1
]}

Zhao, L. -D. ^{[2
]}

Jiang, J. -M. ^{[1
]}

Li, X. -Y. ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Rhein Westfal TH Aachen, Surface Engn Inst, Aachen, Germany

来源：

SURFACE ENGINEERING | 2009年 / 25卷 / 04期

关键词：

Amorphous; Nanocrystallite; Arc spraying; Microhardness; Wear resistance; BULK METALLIC GLASSES; HEAT-TREATMENT; ALLOYS;

D O I：

10.1179/026708409X396060

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An Fe based cored wire was used to deposit wear resistant coatings containing Fe based amorphous phase and nanocrystallites on Q235 steel substrate by arc spraying. The microstructure of the coatings was investigated by scanning electron microscopy and transmission electron microscopy. Electron probe microanalyser and X-ray diffraction analysis were used to study the chemical compositions and phase compositions in the coatings. The microhardness of the coating was determined. The wear behaviour of the coatings was evaluated. The results showed that the coatings contained Fe based amorphous phase and other crystallites such as Fe2B, Cr2B, M-23(C, B)(6), Fe3O4 and alpha-(Fe, Cr). Some of the crystallites show grain sizes of <30 nm. The coatings were hard. Compared with the reference sample of commercial 3Cr13 coating, the coatings showed a much higher wear resistance; the relative wear resistance of the amorphous coating was 8 times higher than that of commercial 3Cr13 coating.

引用

页码：333 / 337

页数：5

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