Ultrafast laser induced NiCrBSi coatings

2nd International Conference on Frontiers of Materials Synthesis and Processing

Sun, An^1^2^3 ; Chen, Yonghui^1 ; Wang, Xiaogang^1^3 ; Han, Qiang^1^2^3

School of Automation and Information Engineering, Sichuan University of Science and Engineering, Zigong

643000, China^1

Material Corrosion and Protection Key Laboratory of Sichuan Province, Zigong

643000, China^2

Artificial Intelligence Key Laboratory of Sichuan Province, Zigong

643000, China^3

关键词: Chemical compositions;    Coating efficiency;    Coating interfaces;    Composite layer;    Metallurgical bonding;    NiCrBSi coatings;    Solid solution strengthening;    Transverse section;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/493/1/012145/pdf
DOI  :  10.1088/1757-899X/493/1/012145

来源: IOP

【 摘 要 】

NiCrBSi composite coating was fabricated on 1045 steel substrate by ultrafast laser induced process. The composite layer consists of the coating zone (CZ) and the bonding zone (BZ). Microstructure and chemical compositions were investigated. The morphology of transverse section revealed that the microstructure of the substrate mingled with that of the coatings in BZ, it was showed that the substrate-coating interface was excellent metallurgical bonding. Reticulation structure of Fe-Cr solid solution and blocky structure of Fe-Ni solid solution were formed as solid solution strengthening in CZ. A small quantity of Ni3Si phases and carbide dispersed in interdendritic structure. Fine particles of carbide and boride precipitated in Fe-Cr reticulation solid solution. The microcracks and pores were eliminated in the homogeneous composite coating, while the coating efficiency was increased.