Microstructures and tribological properties of laser cladded Ti-based metallic glass composite coatings

被引：42

作者：

Lan, Xiaodong ^{[1
]}

Wu, Hong ^{[1
]}

Liu, Yong ^{[1
]}

Zhang, Weidong ^{[1
]}

Li, Ruidi ^{[1
]}

Chen, Shiqi ^{[1
]}

Zai, Xiongfei ^{[1
]}

Hu, Te ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2016年 / 120卷

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Laser cladding; Metallic glass; Coating; Tribological properties; SUPERCOOLED LIQUID; AMORPHOUS-ALLOYS; WEAR-RESISTANCE; BEHAVIOR; CORROSION; CRYSTALLIZATION; CRYSTALLINITY; STRENGTH;

D O I：

10.1016/j.matchar.2016.08.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Metallic glass composite coatings Ti45Cu41Ni9Zr5 and Ti45Cu41Ni6Zr5Sn3 (at.%) on a Ti-30Nb-5Ta-72r (wt.%) (TNTZ) alloy were prepared by laser cladding. The microstructures of the coatings were characterized by means of X-ray diffractometry (XRD), scanning electron microscopy (SEM) equipped with energy dispersive X-ray analyzer (EDXA), and transmission electron microscopy (TEM). Results indicated that the coatings have an amorphous structure embedded with a few nanocrystalline phases and dendrites. A partial substitution of Ni by Sn can improve the glass forming ability of Ti-base metallic glass system, and induce the formation of nano-sized Ni2SnTi phase during the cyclic laser heating. The tribological behavior of both the substrate and the coatings was investigated in detail. A significant improvement in both the hardness and the wear resistance of the coatings was achieved with the addition of Sn. The relationship between the wear resistance and the microstructures of the coatings was discussed. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：82 / 89

页数：8

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