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环氧胶粘剂与硬铝合金接头的界面及失效特性研究

Study on the interface and failure characteristics of joints between epoxy adhesive and duralumin alloy.

作者信息

Zheng Xiangke, Hu Ning, Zhang Dacheng, Da Zhengshang, Shu Linsen, Li Zhiguo, Cang Xinyu

机构信息

School of Optoelectronic Engineering, Xidian University, Xi'an, People's Republic of China.

Xi'an Institute of Optics and Precision Mechanics of CAS, Chinese Academy of Sciences, Xi'an, People's Republic of China.

出版信息

Sci Prog. 2025 Apr-Jun;108(2):368504251348966. doi: 10.1177/00368504251348966. Epub 2025 Jun 9.

DOI:10.1177/00368504251348966
PMID:40485241
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12152398/
Abstract

In the realm of optomechanical joints, the roughness of the component frequently limits the bonded joint's stability and dependability. This study investigates the failure mechanisms and interfacial stress transfer characteristics of bonded structures with six controlled roughness levels to elucidate roughness-dependent adhesion behavior. Shear experiments have been carried out to analyze the failure mechanisms of bonded joints. The results indicate that when roughness increases, shear strength first rises and subsequently falls. When the surface roughness of the duralumin alloy is 4.2 ± 0.75 μm, the shear strength reaches its maximum value of 11.97 MPa. After analyzing the surface characteristics of substrates with various degrees of roughness, the results show that increasing surface roughness can significantly change the substrate's surface energy, wettability, and contact area while also greatly changing the bonding quality. The fractographic evaluation identified interfacial debonding and cohesive-adhesive hybrid failure as the predominant fracture mechanisms. Specimens exhibiting hybrid failure demonstrated enhanced interfacial load transfer capability through synergistic contributions from both adhesive-substrate bonding and bulk adhesive deformation. This research offers an important reference for the manufacture and application of epoxy adhesive and duralumin alloy joints. It has a guiding significance for improving the performance and reliability of joints.

摘要

在光机械接头领域，部件的粗糙度常常限制粘结接头的稳定性和可靠性。本研究调查了具有六种可控粗糙度水平的粘结结构的失效机制和界面应力传递特性，以阐明与粗糙度相关的粘附行为。已进行剪切实验来分析粘结接头的失效机制。结果表明，当粗糙度增加时，剪切强度先上升后下降。当硬铝表面粗糙度为4.2±0.75 μm时，剪切强度达到最大值11.97 MPa。在分析了不同粗糙度程度的基底表面特性后，结果表明，增加表面粗糙度可显著改变基底的表面能、润湿性和接触面积，同时也会极大地改变粘结质量。断口分析确定界面脱粘和内聚-粘附混合失效为主要断裂机制。表现出混合失效的试样通过粘合剂与基底粘结和本体粘合剂变形的协同作用，展示出增强的界面载荷传递能力。本研究为环氧粘合剂和硬铝接头的制造与应用提供了重要参考。对提高接头的性能和可靠性具有指导意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/8a4e24ff8bf9/10.1177_00368504251348966-fig12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/967659899832/10.1177_00368504251348966-fig1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/304ab581bfd4/10.1177_00368504251348966-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/5e12176600ee/10.1177_00368504251348966-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/809e49994d5b/10.1177_00368504251348966-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/243f8c6899a7/10.1177_00368504251348966-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/4b029d7b70f3/10.1177_00368504251348966-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/5cd78726b02d/10.1177_00368504251348966-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/d79a9a2ce8c8/10.1177_00368504251348966-fig11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/8a4e24ff8bf9/10.1177_00368504251348966-fig12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/967659899832/10.1177_00368504251348966-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/6ec9c84487c6/10.1177_00368504251348966-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/12482abfab68/10.1177_00368504251348966-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/144c2a6b9369/10.1177_00368504251348966-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/304ab581bfd4/10.1177_00368504251348966-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/5e12176600ee/10.1177_00368504251348966-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/809e49994d5b/10.1177_00368504251348966-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/243f8c6899a7/10.1177_00368504251348966-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/4b029d7b70f3/10.1177_00368504251348966-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/5cd78726b02d/10.1177_00368504251348966-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/d79a9a2ce8c8/10.1177_00368504251348966-fig11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbaa/12152398/8a4e24ff8bf9/10.1177_00368504251348966-fig12.jpg

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本文引用的文献

1
Molecular Understanding of the Distinction between Adhesive Failure and Cohesive Failure in Adhesive Bonds with Epoxy Resin Adhesives.对环氧树脂胶粘剂粘结中粘附破坏和内聚破坏区别的分子理解
Langmuir. 2024 Apr 9;40(14):7479-7491. doi: 10.1021/acs.langmuir.3c04015. Epub 2024 Mar 26.
2
Disentangling Origins of Adhesive Bonding at Interfaces between Epoxy/Amine Adhesive and Aluminum.解析环氧树脂/胺类粘合剂与铝之间界面处粘结的起源
Langmuir. 2023 Aug 1;39(30):10625-10637. doi: 10.1021/acs.langmuir.3c01218. Epub 2023 Jul 19.
3
The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061-AA1050 Diffusion Bonded Components.
时间、气氛和表面粗糙度对AA6061-AA1050扩散连接组件界面强度和微观结构的影响
Materials (Basel). 2023 Jan 12;16(2):769. doi: 10.3390/ma16020769.