{"title":"Liquid-solid composite bonding of femtosecond laser surface modified SiC ceramics and 7A52 aluminum alloy","authors":"","doi":"10.1016/j.matchar.2024.114327","DOIUrl":null,"url":null,"abstract":"<div><p>This article proposes a method for achieving the connection of SiC and 7A52 aluminum alloy using femtosecond laser surface modification of SiC ceramics. The influence of laser power on the morphology, chemical composition, and wettability of the SiC ceramic surface and the liquid-solid composite bonding mechanism of SiC and 7A52 after femtosecond laser modification was investigated. After femtosecond laser modification, the ceramic structure was constructed with a periodic groove structure of appropriate size, which increased the bonding area between the solder and the ceramic surface. Additionally, thermal decomposition occurred on the SiC surface, resulting in a recasting layer, which improved the wetting effect of the solder on the ceramic surface and enhanced the diffusion of Al and Mg elements to the joint interface. The existence of periodic groove structures changes the fracture path of the joint and improves the strength of the liquid-solid composite joint, which is approximately 45.9 % higher than the original joint strength.</p></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":null,"pages":null},"PeriodicalIF":4.8000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Characterization","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1044580324007083","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
This article proposes a method for achieving the connection of SiC and 7A52 aluminum alloy using femtosecond laser surface modification of SiC ceramics. The influence of laser power on the morphology, chemical composition, and wettability of the SiC ceramic surface and the liquid-solid composite bonding mechanism of SiC and 7A52 after femtosecond laser modification was investigated. After femtosecond laser modification, the ceramic structure was constructed with a periodic groove structure of appropriate size, which increased the bonding area between the solder and the ceramic surface. Additionally, thermal decomposition occurred on the SiC surface, resulting in a recasting layer, which improved the wetting effect of the solder on the ceramic surface and enhanced the diffusion of Al and Mg elements to the joint interface. The existence of periodic groove structures changes the fracture path of the joint and improves the strength of the liquid-solid composite joint, which is approximately 45.9 % higher than the original joint strength.
本文提出了一种利用飞秒激光对SiC陶瓷进行表面改性实现SiC与7A52铝合金连接的方法。研究了飞秒激光改性后激光功率对 SiC 陶瓷表面形貌、化学成分和润湿性的影响，以及 SiC 和 7A52 的液固复合结合机理。飞秒激光改性后，陶瓷结构形成了适当大小的周期性沟槽结构，增加了焊料与陶瓷表面的结合面积。此外，SiC 表面发生了热分解，形成了再铸层，从而改善了焊料在陶瓷表面的润湿效果，并增强了铝和镁元素向接合界面的扩散。周期性沟槽结构的存在改变了接头的断裂路径，提高了液固复合接头的强度，比原来的接头强度高出约 45.9%。
期刊介绍：
Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials.
The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal.
The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include:
Metals & Alloys
Ceramics
Nanomaterials
Biomedical materials
Optical materials
Composites
Natural Materials.
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