Effect of Y2O3 on Microstructure and Corrosion Resistance of Ni45 Coating by Laser Cladding with Different Flow Rates of Carrier Gas

被引：0

作者：

Li, Yunfeng ^{[1
]}

Shi, Yan ^{[2
]}

Jiang, Guangjun ^{[1
]}

Bai, Pucun ^{[1
]}

Tang, Shufeng ^{[1
]}

Cheng, Tiancai ^{[1
]}

Wang, Jiasheng ^{[1
]}

Qiu, Yajie ^{[1
]}

机构：

[1] Inner Mongolia Univ Technol, Coll Mech Engn, Hohhot 010051, Peoples R China

[2] Changchun Univ Sci & Technol, Sch Mech & Elect Engn, Changchun 130022, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2025年 / 34卷 / 09期

关键词：

corrosion resistance; laser cladding; microstructure; numerical simulation; Y2O3; RARE-EARTH-ELEMENTS; COMPOSITE COATINGS; CEO2; BEHAVIOR; ALLOY; OXIDE; BASE; SIZE;

D O I：

10.1007/s11665-024-09719-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser cladding can create a protective coating on metal. In this study, Ni45 coatings were fabricated on 42CrMoA alloy steel by laser cladding using a CO2 laser-processing system. Numerical analysis of the carrier gas was conducted in FLUENT software. The microstructure was evaluated by SEM and XRD analyses. The effects of Y2O3 on the microstructure and corrosion resistance of composite coatings made under carrier gas flow rates of 500-700 L/h were investigated. The powder concentration at the convergence point increased and then decreased, with the maximum powder concentration and molten pool brightness obtained at 600 L/h. The Ni45 cladding layer and Ni45 + 0.4 wt.% Y2O3 coatings were mainly composed of gamma-Ni, M23C6, and Ni3B. The solidification types were planar, cellular crystal, columnar crystal, and equiaxed dendritic. When the carrier gas flow rate is from 500 to 600 L/h, the grains are refined and the corrosion resistance of the coating is enhanced.

引用

页码：7396 / 7409

页数：14

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