Combinations of wood and metal are interesting hybrid composite materials, joining together the low density of wood with the stiffness and strength of metals. Different types of adhesives are used to connect wood and metal elements, but the compatibility between adhesives used and load-bearing materials must be sufficient, which often is challenging. In adhesive bonding technology, surface treatments are a crucial step in the process. In this study, an atmospheric plasma discharge was employed to enhance the adhesion strength of joints between common beech (Fagus sylvatica L.) wood, metals (steel and aluminum alloy), and four different types of adhesives. The optical properties of plasma discharges and its influence on treated substrates’ surface morphology depended on the inherent properties of the treated materials. X-ray photoelectron spectroscopy revealed the surface oxidation of all the materials after plasma treatment. Consequently, the surface free energy of all materials increased as well. The positive effect of the plasma treatment on the tensile shear strength of single-lap joints shows a high potential of atmospheric plasma treatment technology for enhancement of adhesives strength of joints combining wooden elements, wood and steel, or wood and aluminum alloys. In addition to that, expensive epoxy and polyurethane adhesives could be replaced by more affordable polyvinyl acetate and melamine-urea-formaldehyde adhesives, and still perform at equal levels if the plasma was applied prior to bonding.

木材和金属的组合是有趣的混合复合材料，将木材的低密度与金属的刚度和强度结合在一起。不同类型的胶粘剂用于连接木材和金属元素，但是所用胶粘剂与承重材料之间的相容性必须足够，这通常具有挑战性。在粘合剂粘合技术中，表面处理是该过程中至关重要的一步。在这项研究中，大气等离子放电，用于增强通用山毛榉之间的接头的粘合强度（水青冈L.）木材，金属（钢和铝合金）以及四种不同类型的粘合剂。等离子体放电的光学性质及其对处理过的基材表面形态的影响取决于处理过的材料的固有性质。X射线光电子能谱显示等离子体处理后所有材料的表面氧化。因此，所有材料的表面自由能也增加了。等离子处理对单搭接接头拉伸剪切强度的积极影响表明，大气等离子处理技术具有很大的潜力，可以提高结合了木质元素，木材和钢或木材和铝合金的接头的粘合强度。在此之上，