In the present work single-lap-joint specimens with an adhesive layer of micron-scale thickness were prepared, and the effects of adhesive thickness and surface treatments (Milling, SAA, PAA, and SB + SAA) on the bond strength were investigated by tensile tests and surface analyses. The shear strength increases with the increase of adhesive thickness for the milling surface, while it is not presented for the other treated surfaces. PAA treatment can significantly improve the bond strength, while the sandblasting treatment cannot despite the surface roughness greatly increased. The bond strength depends on many surface characteristics, such as the peak density, nano-scale pores, and texture direction, instead of only the roughness value or wettability. The shear energy consumption of the single-lap joints is positively correlated with the shear strength, which evaluates the surface treatment methods for improving the bond strength at a thin adhesive thickness as PAA > Milling > SB + SAA > SAA.

在本工作中，制备了具有微米级厚度的粘合剂层的单搭接试样，并通过以下方法研究了粘合剂厚度和表面处理（铣削，SAA，PAA和SB + SAA）对粘合强度的影响。拉伸试验和表面分析。剪切强度随铣刨表面粘合剂厚度的增加而增加，而其他处理过的表面则没有。PAA处理可以显着提高粘结强度，而喷砂处理尽管表面粗糙度大大提高，但仍无法实现。粘结强度取决于许多表面特性，例如峰密度，纳米级孔和纹理方向，而不仅取决于粗糙度值或润湿性。