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首页> 外文期刊>Materials Science and Engineering >Effect of the width and depth of laser-textured grooves on the bonding strength of plasma-sprayed coatings in the scratch direction
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Effect of the width and depth of laser-textured grooves on the bonding strength of plasma-sprayed coatings in the scratch direction

机译：激光织物槽宽度和深度对划痕方向上等离子体喷涂涂层的粘接强度的影响

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摘要

In this study, atmospheric plasma spraying was used to deposit molybdenum coatings on stainless steel substrates with laser-textured groove patterns and grit blasting substrate pretreatment. The groove depth and width were controlled by selecting the number of scans with a nanosecond pulse laser (1, 3, 5, and 7), while the groove spacing was 100 μm, 150 μm, and 200 μm. The pull-off bonding strength and shear bonding strength parallel and perpendicular to the grooves of the coatings were analyzed using a pull-off and scratch instrument. Furthermore, optimal laser scan times of the groove opening angle were obtained. The results showed that the coating adhesion strength on the grooved substrate with a 100 μm spacing and 5 scans was greater than the cohesive strength. On the other hand, the pull-off bonding strength of coatings on the substrates made with 5 and 3 scans was superior to that on the grit-blasted stainless steel substrate; furthermore, the shear bonding strength in parallel and perpendicular scratch directions of the coating made on the grooved substrate with 5 scans was greater than that on the grit-blasted substrate; for all textured substrate coatings, the shear bonding strength in the parallel direction higher than that in the perpendicular direction. Finally, the equations that correlate the groove width, opening angle, pull-off bonding strength, shear bonding strength, and scanning times were predicted. The study provides significant experimental findings and a theoretical basis about the bonding strength of the laser-textured substrate plasma spraying coatings.
机译：在该研究中，气体等离子体喷涂用于用激光织地槽图案的不锈钢基板上沉积钼涂层和砂砾喷射基板预处理。通过选择纳秒脉冲激光器（1,3,5和7）的扫描数来控制凹槽深度和宽度，而凹槽间距为100μm，150μm和200μm。使用拉出件和划痕仪器分析平行和垂直于涂层凹槽的剥离粘接强度和剪切粘合强度。此外，获得了凹槽打开角度的最佳激光扫描时间。结果表明，具有100μm间距和5次扫描的带槽基板上的涂层粘合强度大于内聚强度。另一方面，用5和3扫描制成的基板上的涂层的拉出强度优于砂砾喷砂不锈钢基材上;此外，在带有5个扫描的带槽基板上制造的涂层的平行和垂直划痕方向的剪切结合强度大于砂砾喷射基材的涂层;对于所有纹理的基板涂层，平行方向上的剪切键合强度高于垂直方向上的剪切键合强度。最后，预测了与沟槽宽度，打开角度，拉出粘接强度，剪切接合强度和扫描时间相关的等式。该研究提供了关于激光纹理基质等离子体喷涂涂层的粘合强度的重要实验结果和理论基础。

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  • 来源
    《Materials Science and Engineering》 |2021年第13期|141558.1-141558.10|共10页
  • 作者

    Delong Jia; Peng Yi; Yancong Liu; Hongyu Jia; Xiaoshuang Yang;

  • 作者单位

    College of Mechanical and Electronic Engineering China University of Petroleum (Huadong) Qingdao China;

    College of Mechanical and Electronic Engineering China University of Petroleum (Huadong) Qingdao China;

    College of Mechanical and Electronic Engineering China University of Petroleum (Huadong) Qingdao China Shengli College China University of Petroleum Dongying China;

    College of Mechanical and Electronic Engineering China University of Petroleum (Huadong) Qingdao China;

    College of Mechanical and Electronic Engineering China University of Petroleum (Huadong) Qingdao China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laser-textured grooves; Opening angle; Molybdenum coating; Scratch direction; Bond strength;

    机译：激光纹理的凹槽;打开角度;钼涂层;划痕方向;粘结强度;

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