中文摘要：

无镀铜焊丝是未来气保护实芯焊丝的发展趋势.综述了纳米材料在无镀铜焊丝中的研究现状,得出：1）无镀铜焊丝表面的纳米涂层使自腐蚀电位正向增加,焊丝的耐蚀性增强;焊接时熔滴细化,熔滴过渡频率加快,电弧稳定性增强.2）纳米添加剂在摩擦界面通过物理吸附或摩擦化学反应成膜、＂微滚珠＂、＂微抛光＂等机制降低摩擦副的摩擦因数和磨斑直径,为减少无镀铜焊丝导电嘴磨损提供了理论指导.

英文摘要：

Non-copper coated solid wires are the future development trends for gas shielded solid wires.The research progress and application of nano-materials in non-copper coated solid wire were reviewed. It was concluded that the surface nano-coating of non-copper surface with corrosion resistance by increasing self-corrosion potential. The arc stability is improved by refining molten droplets and accelerating transition frequency. The nano-additives surface with coefficient and wear scar diameter of tribo-pair through several lubrication mechanisms on the rubbing interfaces such as physical adsorption or chemical reaction film,＂micro ball＂and ＂micropolishing＂,thus providing some theoretical guidance to decrease contact tip wear for non-copper coated solid wires.