Metals | |
The Laser Deposited Nickel-Aluminum Bronze Coatings on SUS630 Stainless Steel and Its Corrosion Resistance in 3.5 wt.% NaCl Solution | |
Kailun Li1  Yixiang Yuan1  Baorui Du1  Jun Yao1  Lu Zhao1  | |
[1] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; | |
关键词: nickel-aluminum bronze; laser deposition; depositing microstructure; corrosion resistance; | |
DOI : 10.3390/met12050781 | |
来源: DOAJ |
【 摘 要 】
In this work, three composite structures of nickel-aluminum bronze (NAB) bonded with SUS630 stainless steel with different intermediate layers were fabricated by laser deposition. The microstructure and corrosion behavior of NAB in 3.5 wt.% NaCl solution were studied. The NAB coating directly deposited on steel substrate contains a large number of Fe-rich dendrites due to the dilution by laser energy and the Cu-Fe liquid phase separation characteristics. The microstructures of NAB were independent and isolated well from the steel substrate when the nickel intermediate layer was applied. Immersion corrosion and electrochemical tests indicated that the composite structure with the nickel intermediate layer presented better corrosion resistance than direct deposited the NAB coating, especially with the NiCr alloy intermediate layer, which led to a shallower corrosion depth and formed a denser layer of protective corrosion products.
【 授权许可】
Unknown