Bamboo is one of the green building materials that have been used for centuries. Combining with metal materials will endow bamboo with new functions, such as weather resistance, anti-corrosion, conductivity, and electromagnetic shielding. However, there is a natural barrier between bamboo and metal materials. This paper proposes fabrication of novel bamboo-based metal composites (BMC) which are composed of bamboo substrate and metal coating, without any adhesive, using an efficient and sustainable arc thermal spraying technique. In this method, the metal wire is melted and deposited on the bamboo substrate through a high-temperature heat source. In the feasibility experiment, arc spraying using aluminum as the wire electrode was selected. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) were used to observe and test the fabricated specimens. It was demonstrated that when the spraying voltage was 40 V, the deposition rate was as high as 5.8 g/min with the average thickness of the metal coating exceeding 400 μm. The surface of the BMC aluminum coating was flat, continuous, and compact with an average roughness of about Ra 3.0 μm. Based on experimental results, the integrity of bamboo substrate in thermal spraying was discussed. Results from SEM–EDS test showed that there are crack areas and adhesion areas between bamboo and metal coatings, and the highest bonding strength exhibited over 1.0 MPa. This work provides a new practice of fabricating novel BMC through a green manufacturing method with high efficiency. The findings of this study may be useful in understanding the preparation of BMC and can help find their suitability for a wide range of applications.

竹子是已经使用了几个世纪的绿色建筑材料之一。与金属材料结合将赋予竹子耐候、防腐、导电、电磁屏蔽等新功能。然而，竹子与金属材料之间存在着天然的屏障。本文提出采用高效且可持续的电弧热喷涂技术制造新型竹基金属复合材料（BMC），该复合材料由竹基材和金属涂层组成，无需任何粘合剂。在这种方法中，金属丝通过高温热源熔化并沉积在竹基材上。在可行性实验中，选择了采用铝作为焊丝电极的电弧喷涂。使用扫描电子显微镜（SEM）和能量色散光谱（EDS）来观察和测试制造的样品。结果表明，当喷涂电压为40 V时，沉积速率高达5.8 g/min，金属涂层的平均厚度超过400 μm。BMC铝涂层表面平整、连续、致密，平均粗糙度约为Ra 3.0 μm。根据实验结果，对热喷涂竹基材的完整性进行了探讨。SEM-EDS测试结果表明，竹材与金属涂层之间存在裂纹区域和粘附区域，且最高结合强度超过1.0 MPa。这项工作为通过高效的绿色制造方法制造新型BMC提供了新的实践。这项研究的结果可能有助于了解 BMC 的制备，并有助于发现它们是否适合广泛的应用。