超声波振动辅助激光包覆铁基晶体/非晶态复合涂层的耐腐蚀性和耐磨性

IF 3.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Communications Pub Date : 2024-09-08 DOI:10.1016/j.mtcomm.2024.110377

Lin Chen, Haolun Song, Chunhuan Guo, Shubang Wang, Fengchun Jiang, Mingying Xiao, Zhuhui Qiao

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引用次数: 0

摘要

在对 FeSiBCr (wt%) 非晶粉末进行激光熔覆的过程中使用了超声波振动（UV）。详细研究了有紫外线和无紫外线的铁基晶体/非晶态复合涂层的微观结构演变和性能。结果表明，紫外线涂层内的平均晶粒大小明显减少了 55.8%，同时界面上的柱状晶粒长度也减少了 35.9%，这主要归因于超声的声流和空化效应。涂层的平均显微硬度值从 659 33 HV 上升到 873 48 HV。同时，带有紫外线的涂层具有出色的耐磨性，与普通涂层相比，磨损率降低了 38.2%。涂层的腐蚀机理是点腐蚀，而紫外线涂层的腐蚀表面点蚀面积相对较小。U V 增强性能的机制可能是细晶粒强化和非晶相强化的协同效应。

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Corrosion and wear resistance of ultrasonic vibration-assisted laser cladded Fe-based crystal/amorphous composite coatings

The ultrasonic vibration (UV) is applied during the laser cladding process of FeSiBCr (wt%) amorphous powders. The microstructure evolution and properties of the Fe-based crystal/amorphous composite coatings with and without UV were investigated in detail. The results reveal a significant decrease of 55.8 % in the average grain size within the UV coating, accompanied by a 35.9 % reduction in the length of columnar grains at the interface, which is primarily attributed to the acoustic streaming and cavitation effects of ultrasound. The average microhardness value of coatings rises from 659 33 HV to 873 48 HV. Meanwhile, the coatings with UV exhibit outstanding wear resistance, with a 38.2 % reduction in wear rate compared to normal coatings. The corrosion mechanism of the coatings is pitting corrosion and the corroded surface of the coating with UV displays a relatively smaller pitting area. The enhancement mechanism for properties by U V can be the cooperative effect of the fine-grain strengthening and the amorphous phase strengthening.

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来源期刊

Materials Today Communications Materials Science-General Materials Science

CiteScore

5.20

自引率

5.30%

发文量

1783

审稿时长

51 days

期刊介绍： Materials Today Communications is a primary research journal covering all areas of materials science. The journal offers the materials community an innovative, efficient and flexible route for the publication of original research which has not found the right home on first submission.