期刊
MATERIALS
卷 16, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/ma16041372
关键词
concrete; electromagnetic pulse shielding; arc thermal metal spray; bonding strength; shielding effect
In this study, different surface treatments were applied to enhance the bonding of metal coatings on concrete and improve the electromagnetic pulse (EMP) shielding properties. Surface hardener, surface roughening agent, and sealing agent were used to treat the concrete surface prior to the deposition of the metal coating. The results showed improved spraying efficiency, adhesion performance, bonding strength, and EMP shielding effect under the optimal surface treatment condition.
The surface treatment of concrete enhances the bonding of its metal coatings. Therefore, in the present study, on the concrete surface, prior to the deposit of an 85Zn-15Al coating via an arc thermal spraying process, different surface treatments were considered for the effective electromagnetic pulse (EMP) shielding properties of the concrete. However, the direct coating on a concrete surface possesses lower bond adhesion, therefore it is of the utmost importance to treat the concrete surface prior to the deposition of the metal coating. Moreover, to obtain better bond adhesion and fill the defects of the coating, the concrete surface is treated by applying a surface hardener (SH), as well as a surface roughening agent (SRA) and a sealing agent (SA), respectively. The metal spraying efficiency, adhesion performance, and bonding strength under different concrete surface treatment conditions were evaluated. The EMP shielding effect was evaluated under the optimal surface treatment condition. The proposed method for EMP shielding exhibited over 60% of spraying efficiency on the treated surface and a bonding strength of up to 3.9 MPa for the SH-SRA-SA (combining surface roughening and pores/defects filling agents) specimen compared to the control one, i.e., 0.8 MPa. The EMP shielding values of the surface-treated concrete with surface hardener, surface roughening agent, and sealing agent, i.e., SH-SRA-SA specimens, exhibited 96.6 dB at 1000 MHz. This was about 12 times higher than without coated concrete.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据